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Artykuły w czasopismach na temat „Weaning weight”

Autor: Grafiati

Data publikacji: 4 czerwca 2021

Data aktualizacji: 25 lipca 2025

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1

Smith, Alison, Kenneth Stalder, Timo Serenius, Tom Baas, and John Mabry. "Effect of piglet birth weight on weights at weaning and 42 days post weaning." Journal of Swine Health and Production 15, no. 4 (2007): 213–18. http://dx.doi.org/10.54846/jshap/518.

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Objective: To model the effects of birth weight on preweaning survival and weights at weaning and at 42 days post weaning. Materials and methods: Individual birth-weight and weaning-weight records of 2467 pigs weaned at 14 to 21 days old were partitioned into nine categories incrementally increasing or decreasing by 0.5 SD (0.16 and 0.68 kg, respectively) from the mean (1.57 and 5.80 kg, respectively). To study the effect of birth weight on weight at subsequent phases, fixed effects of birth-weight category and parity of dam were included in the model for weights at weaning and 42 days post we

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2

Pluske, J. R., D. K. Kerton, P. D. Cranwell, et al. "Age, sex, and weight at weaning influence organ weight and gastrointestinal development of weanling pigs." Australian Journal of Agricultural Research 54, no. 5 (2003): 515. http://dx.doi.org/10.1071/ar02156.

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The present study was designed to determine the interrelationships between sex, weaning age, and weaning weight on aspects of physiological and gastrointestinal development in pigs. Forty-eight Large White × Landrace pigs were used in a factorial arrangement with the respective factors being: age at weaning (14 or 28 days), weight at weaning (heavy or light), sex (boar or gilt), and time after weaning (1, 7, and 14 days). At weaning, 48 pigs were removed from the sow: 16 pigs were then fasted for 24 h before euthanasia for determination of organ weights, gut histology, and enzymology, and 32 p

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3

Kutluca Korkmaz, Müzeyyen, and Ebru Emsen. "Farklı Yaşlarda Sütten Kesimin Prolifik ve Terminal Irk Melez Kuzuların Büyüme Özellikleri ve Yaşama Güçleri Üzerine Etkisi." Turkish Journal of Agriculture - Food Science and Technology 8, no. 11 (2020): 2255–60. http://dx.doi.org/10.24925/turjaf.v8i11.2255-2260.2468.

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In this study, we compared the growth and survival characteristics of Romanov × Morkaraman (F1 Rom), Romanov × F1 Romanov (G1 Rom) and Charollais × F1 Romanov (Charom) crossbreed lambs weaning weight at different ages. After birth, from three genotypes lambs were weaned at two different ages of 50 and 75 days and growth performance after weaning was examined at 120 days of age. The effect of three different genotypes and birth type on birth weight was very important, and sex effect was insignificant. In weaning weight, only the effect of birth type was found to be significant. Lamb birth and w

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4

Ali Husni, dan Sulastri, Linda Safitri, M. Dima Iqbal Hamdani,. "ESTIMASI NILAI PEMULIAAN BOBOT SAPIH SAPI PERANAKAN ONGOLE (PO) DI DESA WAWASAN KECAMATAN TANJUNGSARI KABUPATEN LAMPUNG SELATAN." Jurnal Riset dan Inovasi Peternakan (Journal of Research and Innovation of Animals) 3, no. 2 (2019): 28–33. http://dx.doi.org/10.23960/jrip.2019.3.2.28-33.

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This study aims to determine the heritability value and breeding value of weaning weight of Ongole crossbreed (PO) cattle in Wawasan Village, Tanjungsari District, South Lampung Regency. The study was conducted in Wawasan Village Tanjungsari District South Lampung Regency on May 2018 to August 2018. The research material consisted of a recording of the birth of the cows, the birth weight of the parents, the weaning weight of the parents, the age of weaning parents, the age of the parents at the time of birth, the weight of the female calves, weaning weight of female calves and weaning age of t

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5

Nuraini, D. M., S. Prastowo, and N. Widyas. "Weaning rate, birth weight, and weaning weight of Jawarandu and Boer crossbreed goat from naturally serviced and artificially inseminated does." IOP Conference Series: Earth and Environmental Science 902, no. 1 (2021): 012029. http://dx.doi.org/10.1088/1755-1315/902/1/012029.

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Abstract Two types of mating had been practiced in the crossbreed of Jawarandu does and Boer buck that produced Boerja goat, the natural service and artificial insemination. This study aimed to compare the weaning rate, birth weight, and weaning weight of offspring from both mating methods and analyze the different birth and weaning weights on different sex and birth type. A total of 271 kids were born from naturally serviced (NS) and artificially inseminated (AI) does (221 and 50, respectively). All kids were managed in the same condition. The number of kid died pre-weaning, birth weight, and

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6

Meyer, K. "Estimates of covariance components for growth traits of Australian Charolais cattle." Australian Journal of Agricultural Research 44, no. 7 (1993): 1501. http://dx.doi.org/10.1071/ar9931501.

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Restricted maximum likelihood estimates of covariance components and the resulting genetic parameters were obtained for birth, weaning, yearling and final weights and postweaning gain of Australian Charolais cattle fitting an animal model including genetic or permanent environmental maternal effects. No 'carry-over' of maternal effects till weaning on postweaning weights was found. Direct heritability estimates were 34, 41 and 22% for yearling weight, final weight and postweaning gain respectively. Maternal genetic effects were not important for birth weight and were small for weaning weight.

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7

Anous, M. R. "Selection indexes for improved weaning and marketing body weights of the Burundi local rabbits." Archives Animal Breeding 44, no. 5 (2001): 561–68. http://dx.doi.org/10.5194/aab-44-561-2001.

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Abstract. Estimates of genetic and phenotypic parameters for growth-related traits involving body weights at 4, 6 (weaning), 8 and 10 (marketing) weeks of age and average daily gains from 4- to 6- and 6- to 10-weeks of age (postweaning daily gain) were computed on 193 males of the Burundian local rabbits . Estimates were then used for constructing thirteen selection indexes, involved body weights at 4, 6 and 10 weeks of age and daily gains, to improve body weights of rabbits at weaning and marketing. The use of weaning weight in an index combined with body weight at 4 weeks of age (W4) and pos

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8

Adedibu, I. I., F. E. Sola- Ojo, and M. Lawal. "Sokoto Red and Sahelian goats: The untapped potential for improving meat production in the developing economy of Nigeria." Nigerian Journal of Animal Production 44, no. 4 (2020): 325–32. http://dx.doi.org/10.51791/njap.v44i4.494.

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A study was conducted on indigenous unselected Sokoto Red (SR) and Sahel (SH) goats in National Animal Production Research Institute, (NAPRI), Ahmadu Bello University, Shika- Zaria, Kaduna State, Nigeria. The study was carried out to understand how birth, pre- weaning and post-weaning weights in the SR and SH goats can be used to improve their productivity. Thirty kids (10 males and 20 females) of SR and thirty kids (10 males and 20 females) of SH breeds of goat were utilised for this study. Results obtained showed that the coefficient of variation (CV) was very low. There were no significant

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9

Caro-Petrovic, Violeta, Milan Petrovic, Dragana Ruzic-Muslic, et al. "Interrelation between body weights of sire, dam and their lambs at early stage of growth." Biotehnologija u stocarstvu 36, no. 2 (2020): 205–14. http://dx.doi.org/10.2298/bah2002205c.

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Records of female lambs and their parents of the Mis sheep breed have used. All animals are approximately have weaned at 90 days of age. Descriptive statistics, paired sample test, paired differences, measures of association, correlations and regression of body weights between female lambs and their parents have done. A complementary least body weights at 30 days and weaning between dams and lambs but utmost weight at 30 days, the lambs were higher while at weaning, the dams had higher weight. It can observe that the averages on body weights the rams were the highest, followed by lambs and the

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10

Lee, G. J., and C. S. Haley. "Comparative farrowing to weaning performance in Meishan and Large White pigs and their crosses." Animal Science 60, no. 2 (1995): 269–80. http://dx.doi.org/10.1017/s1357729800008432.

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AbstractGrowth and survival from birth to weaning were monitored during three generations of crossbreeding between British Large White (LW) and Chinese Meishan (MS) pigs. The design allowed comparisons between sow genotypes ranging from zero to all MS genes, which were mated toLWor MS boars, to produce progeny with proportions of 0·0 to 0·5 or 0·5 to 1·0 MS genes, respectively. Crossbreeding parameters of both maternal and direct piglet performance were estimated for the first two parities using restricted maximum likelihood (REML) methods for litter traits (litter weight at birth, litter mean

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11

Stamoulis, Vassilikí Jaconi, Guilherme Rocha Queiroz, Joely Ferreira Figueiredo Bittar, Eustáquio Resende Bittar, and Guilherme Costa Venturini. "Analysis of the influence of the birth period on the body weight of Nelore cattle." CONTRIBUCIONES A LAS CIENCIAS SOCIALES 17, no. 2 (2024): e5256. http://dx.doi.org/10.55905/revconv.17n.2-189.

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This study aimed to present the relationship between the birth period of beef cattle and the weaning weight of Nelore calves. A total of 260,832 Nelore animals from the database of the National Association of Breeders and Researchers (ANCP) were used. Out of this total, 130,001 were males (49.84%) and 130,831 were females (50.16%) of the Nelore breed conceived via artificial insemination. The animals used were born between the years 2014 and 2017 in the Southeast and Midwest regions in different months of birth. The evaluated characteristic was the weaning weight, and the assessment of these w

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12

Vaz, Ricardo Zambarda, and José Fernando Piva Lobato. "Effects of the weaning age of calves on somatic development and on reproductive performance of beef cows." Revista Brasileira de Zootecnia 39, no. 5 (2010): 1058–67. http://dx.doi.org/10.1590/s1516-35982010000500016.

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This study evaluated body development and reproductive performance of beef cows whose calves were submitted to early weaning (76 days of age), or conventional weaning (148 days of age). It was used 141 Braford cows that calved in 2004, 2005, and 2006 to evaluate weight at calving at 76 days, weight at calving at 148 days, weight at the beginning and end of the breeding season, variation of the average daily weight, body condition, pregnancy rate, and calving interval. Dams of calves weaned at 148 days of age showed daily weight gain higher body weight and better body condition at 148 days of a

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13

Vera, R. R. "Growth and conception in continuously underfed Brahman heifers." Animal Science 53, no. 1 (1991): 45–50. http://dx.doi.org/10.1017/s0003356100005961.

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ABSTRACTThe objective of the experiment was to determine the effects of different, sustained levels of undernutrition on the reproductive performance of Brahman heifers, and on their subsequent growth to adulthood, when reared exclusively on a low-quality tropical pasture.Irrespective of the live-weight gains realized between weaning and the target weight of 270 kg, heifers on all treatments conceived at a similar mean weight of 290 kg. Nevertheless, heifers on the low weight-gain treatment had a significantly different relationship of cumulative conceptions to weight, which was confirmed when

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14

Yaylak, Erdal, Hikmet Orhan, and Alim Daşkaya. "Some Environmental Factors Affecting Birth Weight, Weaning Weight and Daily Live Weight Gain of Holstein Calves." Turkish Journal of Agriculture - Food Science and Technology 3, no. 7 (2015): 617. http://dx.doi.org/10.24925/turjaf.v3i7.617-622.392.

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The present study was conducted to determine some environmental factors affecting birth weight, weaning weight and daily live weight gain of Holstein calves of a livestock facility in Izmir, Turkey. The data on 2091 calves born between the years 2005-2010 were used to assess the relevant parameters. Effects of calving year, calving month, calf gender and the interaction between calving year and calving month on calves’ birth weights were highly significant. The overall mean of birth weights was 39.6±0.15 kg. In addition, effects of calving year, calving month, gender, birth weight, weaning age

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15

Djego, Yohanes, Johny Nada Kihe, and Petrus Kune. "The Estimate of Repitability of Performances at Birth and Weaning Age of Duroc Crossbred Sows." Journal of Tropical Animal Science and Technology 4, no. 1 (2022): 17–24. http://dx.doi.org/10.32938/jtast.v4i1.2185.

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The aims of this study were to determine the average and standard deviation and to estimate repitability coefficients of production at birth and weaning characters of duroc crossbred sows. The study was carried out in two breeding farms namely the Instalation of Pig Breeding, village of Tarus, Kupang Regency and the Manise Pig Farm, Village of Oetete, Kupang City, East Nusa Tenggara (NTT). Materials used duroc crossbred sows ( 15 heads ) which born and weaned piglets during the study periode. All sows was mated artivicialy with boars of duroc crossbred. Variables were liter size, weaning rate,

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16

Riyanto, Arif, Ali Husni, Akhmad Dakhlan, and Arif Qisthon. "PERBANDINGAN PERTUMBUHAN PASCASAPIH SAPI BRAHMAN CROSS DI DESA WAWASAN DAN DESA PURWODADI DALAM, KECAMATAN TANJUNGSARI, KABUPATEN LAMPUNG SELATAN." Jurnal Riset dan Inovasi Peternakan (Journal of Research and Innovation of Animals) 5, no. 3 (2021): 174–80. http://dx.doi.org/10.23960/jrip.2021.5.3.174-180.

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This study was conducted with the aim to compare weaning weight, yearling weights, post weaning weight gain up to one year of age and average daily gain (ADG) from weaning to one year of age of Brahman Cross cattle between in Wawasan and in Purwodadi Dalam Villages, Tanjungsari District, Lampung Selatan Regency. The study was conducted in August 2020 in Wawasan Village and Purwodadi Dalam Village, Tanjungsari District, Lampung Selatan Regency, Lampung Province. The data used were secondary data taken from the records of 30 Brahman Cross cattle from each village. A Survey method was used in thi

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17

Schreurs, N. M., P. R. Kenyon, F. J. Mulvaney, P. C. H. Morel, D. M. West, and S. T. Morris. "Response of additional ewe lamb liveweight during gestation on birth and weaning weight of offspring and liveweight of the ewe lamb at weaning." Animal Production Science 50, no. 6 (2010): 528. http://dx.doi.org/10.1071/an09185.

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Increasing the liveweight of ewe lambs during gestation may have positive effects on lamb birthweight and weaning weight and also on ewe lamb liveweight at weaning. Specific times during the gestation period of the ewe lamb may be more responsive to improved nutrition and increases in liveweight. The objective of this work was to use a meta-analytic approach to investigate the effects of ewe lamb liveweight at mating and during pregnancy on lamb birth and weaning weights, and the ewe lamb’s liveweight at weaning. Increasing ewe lamb liveweight in early gestation and in particular before mating

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Lin, Chung-Wei, Hsiang-Yun Ko, Chih-Chi Huang, Chiu-Yu Yeh, Yen-Chun Chiu, and Hsiu-Lin Chen. "Body Weight Gain Status during the Incubator Weaning Process in Very Low Birth Weight Premature Infants." Children 9, no. 7 (2022): 985. http://dx.doi.org/10.3390/children9070985.

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Incubator care is essential for premature infants during early hospitalization. As the infants’ conditions improve, incubator weaning becomes necessary. This retrospective study aimed to evaluate the effect of body weight gain and status of intake-calorie gain on the incubator weaning process for very low birth weight (VLBW) premature infants. The study included 127 VLBW premature neonates. We analyzed data on clinical characteristics potentially associated with the weaning period and the end-weaning body weight (EWBW), including body weight gain status, intake-calorie gain status, and disease

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Hamdani, Muhammad Dima Iqbal, Kusuma Adhianto, Sumarni Sumarni, and Sulastri Sulastri. "Estimasi Korelasi Genetik antara Bobot Lahir dengan Bobot Sapih pada Kambing Saburai di Sentra Pembibitan Kabupaten Tanggamus Provinsi Lampung." Jurnal Ilmu dan Teknologi Peternakan Tropis 7, no. 3 (2020): 247. http://dx.doi.org/10.33772/jitro.v7i2.5628.

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ABSTRAKPenelitian ini bertujuan untuk mengetahui estimasi nilai korelasi genetik antara berat lahir dan berat sapih pada kambing saburai di Kabupaten Tanggamus. Penelitian dilakukan pada bulan Juli-Agustus 2018, berlokasi di Sentra pembibitan kambing saburai di Kabupaten Tanggamus. Materi penelitian ini sebanyak data 136 indukan dan data 150 anakan kambing saburai. Metode penelitian yaitu survei menggunakan data recording dan kuesioner. Variabel yang diamati adalah berat lahir dan berat sapih induk, berat lahir dan berat sapih cempe, umur sapih, umur induk saat melahirkan, tipe kelahiran cempe

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Koketsu, Y., and G. D. Dial. "Factors associated with average pig weight at weaning on farms using early weaning." Animal Science 66, no. 1 (1998): 247–53. http://dx.doi.org/10.1017/s1357729800009024.

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AbstractThe objective of this study was to investigate the effect of various factors on average pig weight at weaning on farms using early weaning. Farms were selected based on average weaning age and whether they recorded lactation food intake and litter weights at weaning. The database contained 9834 litter weights and 8903 food intake records. Average pig weight at weaning, litter size at weaning, weaning age, and average daily food intake during lactation (ADFl) were 4·9 (s.d. 1·0) kg, 9·3 (s.d. 1·6) pigs, 16·8 (s.d. 2·8) days, and 4·9 (s.d. 1·1) kg, respectively. Litter size, weaning age,

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Tupy, Oscar, Sérgio Esteves, and Gerlane Brito. "Resultados econômicos do confinamento de ovinos de diferentes grupos genéticos no estado de São Paulo." Informações Econômicas 48, no. 3 (2018): 5–18. http://dx.doi.org/10.56468/1678-832x.eie2018.2018.

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This study evaluates the economic outcome of a study on confined lamb crossings for meat production taking into account two weaning ages and two slaughter weights: weaning age of 60 days with two slaughter weights respectively of 32 and 38 kg, and weaning age of 90 days and 32 and 38 kg slaughter weights. The genetic groups used in the study were Dorper, Ille-de-France, Santa Inês, Texel crossed with the Brazilian Santa Inês breed. Economic performances expressed as average profit per head varied depending on genetic groups and slaughter ages and weights. The Dorper was more profitable at 60 d

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Selaive -Villarroel, Arturo Bernardo, Marcus Brocardo Maciel, and Nelson Manzoni de Oliveira. "Effects of weaning age and weight on lamb growth rate of Morada Nova breed raised in a tropical extensive production system." Ciência Rural 38, no. 3 (2008): 784–88. http://dx.doi.org/10.1590/s0103-84782008000300030.

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The aim of this research were to study the effect of weaning age and weight on post-growing rate (PWG) and to estimate the optimal weaning age (WA) and weight (WW) of Morada Nova-white variety breed lambs raised under extensive system conditions. A total of 31 male and female lambs were evaluated, being 19 lambs born in April/May 2001 and 12 lambs born in February/March 2002. Lambs were distributed in the following treatments at weaning: 1) weaning age = T1: weaned at 60 days; T2: weaned at 75 days; T3: weaned at 90 days, and 2) weaning weight = T1: weaned with 9 to 10.4kg weigth; T2: weaned w

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Wolter, B. F., and M. Ellis. "The effects of weaning weight and rate of growth immediately after weaning on subsequent pig growth performance and carcass characteristics." Canadian Journal of Animal Science 81, no. 3 (2001): 363–69. http://dx.doi.org/10.4141/a00-100.

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Effect of accelerated weight gain immediately after weaning on subsequent performance was evaluated in pigs with heavy and light weaning weights. The study was carried out as a randomized complete block design with a 2 × 2 × 2 factorial arrangement with the treatments being weaning weight (Heavy vs. Light), post-weaning growth rate (Accelerated vs. Conventional) and sex (Barrow vs. Gilt). Pigs were weaned at 18 to 22 d of age, weighed and classified as either Heavy or Light (5.4 vs. 3.9 kg, SE ± 0.04). During the first 14 d after weaning, pigs on the Accelerated growth treatment were housed in

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Ali Husni dan Sulastri, Ficke Rahmawati, M. Dima Iqbal Hamdani,. "ESTIMASI NILAI RIPITABILITAS DAN NILAI MPPA (MOST PROBABLE PRODUCING ABILITY) BOBOT SAPIH SAPI PERANAKAN ONGOLE (PO) DI DESA WAWASAN KECAMATAN TANJUNGSARI KABUPATEN LAMPUNG SELATAN." Jurnal Riset dan Inovasi Peternakan (Journal of Research and Innovation of Animals) 3, no. 2 (2019): 1–6. http://dx.doi.org/10.23960/jrip.2019.3.2.1-6.

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This research aims to estimate the value of ripeatability and Most Probable Producing Ability (MPPA) for weaning weight of Ongole grade cattle. This research wascarried out on 29 June--29 July 2018 in Wawasan Village, Tanjungsari District, South Lampung Regency, Lampung Province. The research material used consisted of the age of the mother at the time of delivery, calf birth weight, calf weaning age, calf weaning weight, and recording data in 2013--2017 . This study used a survey method. Data analysis was carried out by estimating corrected weaning weights, ripitability values, and MPPA. Base

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Bunok, Debora K. I., M. Th R. Lapian, V. R. W. Rawung, and G. D. G. Rembet. "HUBUNGAN BOBOT LAHIR ANAK BABI DENGAN PERTAMBAHAN BOBOT BADAN, BOBOT SAPIH, MORTALITAS, DAN LITTER SIZE SAPIHAN PADA PETERNAKAN PT. KARYA PROSPEK SATWA." ZOOTEC 40, no. 1 (2020): 260. http://dx.doi.org/10.35792/zot.40.1.2020.27181.

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RELATIONSHIP OF WEIGHT BIRTH PIGLET WITH ADDITION OF AGENCY WEIGHT, WEANING WEIGHT, MORTALITY, AND LITTER SIZE WEANING IN LIVESTOCK PT. KARYA PROSPEK SATWA. This study aims to determine how much the relationship of birth weight with weight gain, weaning weight, mortality, and litter size of weaning in animal husbandry companies owned by Animal Prospects. The material used is 7 pregnant sows from Yorkshire and Landrace, with an average body weight of 140 kg which will be taken by 54 children randomly. Furthermore, this research data obtained from weighing piglets during parturition, weighing we

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Dierking, Shannon L., Harold J. Monegue, and Merlin D. Lindemann. "PSIX-19 The impact of piglet nursing location along the sow udder line on piglet gain and subsequent weaning weight." Journal of Animal Science 98, Supplement_3 (2020): 183–84. http://dx.doi.org/10.1093/jas/skaa054.325.

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Abstract Piglet weaning weight is a critical factor that influences post-weaning growth and performance. Weaning weight is a function of birth weight and the amount and nutrient density of the milk consumed during lactation. Milk production is influenced by sow mammary gland development and diet consumption but may also be a biological function of teat location along the udder line. The objective of this study was then to determine the effects of piglet nursing location along the udder on overall piglet gain and weaning weight. A total of 1,078 individual piglets were observed during the nursi

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Vaez, Torshizi R., FW Nicolas, and HW Raadsma. "REML estimates of variance and covariance components for production traits in Australian Merino sheep, using an animal model. 1. Body weight from birth to 22 months." Australian Journal of Agricultural Research 47, no. 8 (1996): 1235. http://dx.doi.org/10.1071/ar9961235.

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Variance components for direct additive genetic, maternal additive genetic, and maternal environmental effects, and the covariance between direct and maternal additive genetic effects, were estimated by restricted maximum likelihood (REML) procedures, using an animal model, for body weight between birth and 22 months of age in Australian Merino sheep. Direct heritability was estimated to be 0.30 for birth weight, 0.28 for weaning weight, 0.24 for body weight at 10 months, 0.34 for body weight at 16 months, and 0.34 for body weight at 22 months. Maternal heritability estimates were 0.29, 0.41,

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Mavrogenis, A. P., and A. Constantinou. "Relationships between pre-weaning growth, post-weaning growth and mature body size in Chios sheep." Animal Science 50, no. 2 (1990): 271–75. http://dx.doi.org/10.1017/s0003356100004724.

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ABSTRACTThe study examined early measures of growth and their relationships with mature body size. Data on 792 purebred females of the Chios breed, born and reared on two experimental farms between 1978 and 1986, were analysed. Pedigree information and records on live weight at birth, at weaning, 105 days of age and at first and subsequent matings was recorded. There were flock-year differences for all traits studied (P < 0·01) and birth type was important for all traits except post-weaning growth rate. Dam lactation number had no significant effect on birth weight and pre-weaning growth ra

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Francis, D. A., G. I. Christison, and N. F. Cymbaluk. "Uniform or heterogeneous weight groups as factors in mixing weanling pigs." Canadian Journal of Animal Science 76, no. 2 (1996): 171–76. http://dx.doi.org/10.4141/cjas96-026.

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A series of trials evaluated the behavior and performance of pigs grouped into three main categories at weaning: (1) unmixed litters, (2) mixed into uniform body weight groups (light, medium and heavy) and (3) mixed into heterogeneous weight groups. The effects of grouping on performance criteria were conflicting among trials and with time after weaning. In trial 1, heterogeneous groups had lower (P = 0.09) average daily gain to 5 d after weaning than intact litters. The reverse was observed in trial 2. In trial 3, uniform weight groups grew more rapidly (P < 0.01) than heterogenous groups.

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Mirkov, M., I. Radović, M. Cincović, M. P. Horvatović, and S. Dragin. "The correlation between body weight, body weight gain and blood parameters in pigs at birth and weaning." Arquivo Brasileiro de Medicina Veterinária e Zootecnia 75, no. 2 (2023): 313–23. http://dx.doi.org/10.1590/1678-4162-12795.

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ABSTRACT The aim of study was to determine the relationship between metabolic parameters, body weight and body growth of piglets at birth and weaning. The experiment included 80 piglets obtained from F1 generation sows. Body weight was measured at birth (BW0), 24h (BW1) after birth and on day 25 (at weaning, BW2). Blood sampling was performed at the beginning of life (3rd day after birth) and at weaning (21st day after birth). BW0 and BW1 positively correlated with cholesterol and negatively with urea values at the beginning of life and RBC values at weaning. BW2 positively correlates with alb

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A. S. Oramari, Rabee. "Genetic Evaluation of Some Productive Traits in Maraz Goats." Journal Of Duhok University 23, no. 2 (2020): 62–70. http://dx.doi.org/10.26682/ajuod.2020.23.2.9.

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This study was carriedout at the private project of Maraz goats at Bamerny sub-district/Amadiya district /Duhok governorate/Kurdistan Region of Iraq, and consists of 71 does, 8 bucks, as well as 234, 171 and 162 kids at birth, weaning and six month of age, respectively during two kidding seasons (2015-2016) and (2016- 2017). Milk traits consist of 121 records of each daily (DMY), total (TMY), pre-weaning (PRMY), peak milk yield (PKMY) and time to peak (TPMY), and 120 records of post weaning milk yield (POMY). Animal Model Program for single trait was used to predict the breeding value (PBV) an

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Ibrahim, Noor, Nurin Noor, and Nur Nasruddin. "Evaluation of growth parameters and body condition score on weaning stages of Saanen goats." Journal of Advanced Veterinary and Animal Research 9, no. 3 (2022): 527. http://dx.doi.org/10.5455/javar.2022.i622.

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Objective: There are three objectives in this study; 1) to measure the live weight of pre-and post-weaning Saanen kids; 2) to determine the growth curves between males and females pre-and post-weaning Saanen kids; and 3) to analyze the body condition score (BCS) between male and female pre-and post-weaning kids. Materials and Methods: This study included pre-weaning kids aged 1 month, as well as post-wean¬ing kids aged 3–6 months. 10 pre-weaning purebred Saanen kids (n = 5 male and n = 5 female) and 20 post-weaning Saanen kids (n = 10 male and n = 10 female) were employed in this investigation

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Meyer, K. "Covariance matrices for growth traits of Australian Polled Hereford cattle." Animal Science 57, no. 1 (1993): 37–45. http://dx.doi.org/10.1017/s0003356100006589.

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AbstractEstimates of covariance components due to direct and maternal effects among birth, weaning, yearling and final weight for Australian Polled Herefords were obtained by restricted maximum likelihood fitting an animal model. Data were obtained from commercial herds participating in the National Beef Recording Scheme and an across-herd genetic evaluation service. Analyses were carried out considering nine subsets of data, each comprising at least 3000 weaning, 1000 yearling and 500 final weight records which yielded a total of 30 506,17 105 and 9486 records for the three weights, respectiv

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Gushairiyanto, Gushairiyanto, and Depison Depison. "Korelasi Genetik Antara Bobot Sapih dengan Bobot Satu Tahun dan Laju Pertumbuhan Pasca Sapih Sapi Brahman Cross." Jurnal Ilmiah Ilmu-Ilmu Peternakan 12, no. 4 (2009): 171–75. http://dx.doi.org/10.22437/jiiip.v0i0.165.

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Increased production of meat has to be done to meet the needs of the animal protein demand continues to increase, this study aims to look at the possibility of accelerating the implementation of selection with respect to the production of meat that is when the cow weaned in order to improve respos selection. This study collected data includes birth weight, weaning weight, weight of one year and post-weaning growth rate and identify the lineage of every cow that became the object of research. The study was conducted by analyzing the data to obtain heritability value weaning weight, weight of on

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Harpangestu, Dennis Mulya, Akhmad Dakhlan, Dian Kurniawati, and Arif Qisthon. "ESTIMASI NILAI RIPITABILITAS BOBOT SAPIH DAN MOST PROBABLE PRODUCING ABILITY KAMBING SABURAI BETINA DI KELOMPOK TANI GUYUP RUKUN KECAMATAN SUMBEREJO, KABUPATEN TANGGAMUS." Jurnal Riset dan Inovasi Peternakan (Journal of Research and Innovation of Animals) 6, no. 2 (2022): 145–50. http://dx.doi.org/10.23960/jrip.2022.6.2.145-150.

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This study aimed to determine the repeatability estimate of weaning weight and the Most Probable Producing Ability (MPPA) of female Saburai goats in the Guyup Rukun Farm Group in Sumberejo District, Tanggamus Regency which was conducted in November 2020. The method used in this study was a survey method using 50 Saburai does that had given birth twice from 2016-2020. The observed variables were birth weight, age of the dam at giving birth, weaning age, type of birth, sex and weaning weight at the first and second parity. Weaning weights were corrected for sex, the age of the dam, weaning age o

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Kramarenko, A. S., S. S. Kramarenko, S. I. Lugovoy, and O. I. Yulevich. "Analysis of the influence of genetic and non-genetic factors on the birth weight and weaning weight of lambs." Scientific Messenger of LNU of Veterinary Medicine and Biotechnologies 22, no. 93 (2020): 14–21. http://dx.doi.org/10.32718/nvlvet-a9303.

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The main aim of this paper is to analyze the influence of genetic and non-genetic factors on the birth weight and weaning weight of lambs. The study was carried out on the basis of the Institute of Animal Husbandry of Steppe Regions named by M. F. Ivanov “Askania-Nova” – the National Scientific Agricultural Center in Sheep Breeding of NAAS. Birth and weaning weights data collected during a 5-vear period from 3961 lambs were used. The reproductive traits of the Ascanian fine-fleece (AC) ewes were evaluated in combination with the rams of different genotypes: Ascanian fine-fleece, Australian mer

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Hatcher, S., J. Eppleston, K. J. Thornberry, and B. Watt. "High Merino weaner survival rates are a function of weaning weight and positive post-weaning growth rates." Animal Production Science 50, no. 6 (2010): 465. http://dx.doi.org/10.1071/an09187.

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Survival and subsequent productivity of Merino ewe weaners (weaned in 2006 and 2007, respectively) on commercial properties in the New South Wales Central Tablelands were monitored through routine liveweight measurement until weaning of their own progeny from their maiden joining. Growth rates were calculated from the regular liveweight measurements with survival determined by the continuing presence of an individual animal at subsequent measurements. This study demonstrates that high weaner survival rates are a function of both weaning weight and post-weaning growth rates. Importantly, it ind

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Habibi, Habibi, Akhmad Dakhlan, Dian Kurniawati, and Kusuma Adhianto. "ESTIMASI NILAI PEMULIAAN PEJANTAN KAMBING SABURAI BERDASARKAN BOBOT SAPIH DI KELOMPOK TERNAK MAKMUR II, KECAMATAN GISTING, KABUPATEN TANGGAMUS." Jurnal Riset dan Inovasi Peternakan (Journal of Research and Innovation of Animals) 6, no. 2 (2022): 192–98. http://dx.doi.org/10.23960/jrip.2022.6.2.192-198.

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This study aimed to determine the genetic potential of Saburai bucks for weaning weight based on breeding value in the Makmur II Livestock Group, Gisting District, Tanggamus Regency and to determine which individuals deserve to be maintained in the population. This research was conducted in May 2021 at Gisting Atas Village, Gisting District, Tanggamus Regency. This study used a survey method using weaning weight data at first and second parity that has been recorded by farmers in the recording. The observed variables were birth weight, weaning weight, weaning age, age of the dam at the time of

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Rahnefeld, G. W., Doug Ward, and G. M. Weiss. "A comparison of methods to evaluate beef cow productivity." Canadian Journal of Animal Science 73, no. 4 (1993): 971–75. http://dx.doi.org/10.4141/cjas93-098.

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The following were compared as measures of cow productivity: (A) calf weaning weight per mating opportunity; (B) calf weaning weight per mating opportunity with cow weight at weaning as a covariate; (C) calf weaning weight per mating opportunity per unit of cow weight at weaning; and (D) calf weaning weight per mating opportunity per cow metabolic weight (kg0.75) at weaning. Results indicate that the method described under (C) is best at reducing error followed closely by the method described under (D). The least satisfactory measure of cow productivity was (B). Key words: Beef cattle, cow eff

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Walkom, S. F., A. N. Thompson, E. Bowen, and D. J. Brown. "Weaner survival is heritable in Australian Merinos and current breeding objectives are potentially leading to a decline in survival." Animal Production Science 59, no. 1 (2019): 35. http://dx.doi.org/10.1071/an17151.

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There is little evidence to show that mortality rates during the period after weaning are improving over time in Australian sheep. The average mortality rate of Merino lambs during the post-weaning period has been estimated to be 5.2%. The present study explored the potential for producers to breed for improved survival rates during the post-weaning period and the potential impact this would have on key production traits. A total of 122526 weaner survival (mortality) records were obtained from 18 Merino flocks, between 1989 and 2014, encompassing a wide variety of Australian Merino sheep types

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Ali, Ali Hussein Mohammed, and Hafedh Mossa Ali Altaei. "Relationship of Body Weights with the Productive Performance of Lambs of the Awassi and Karakul Breeds and Crossbred Sheep." IOP Conference Series: Earth and Environmental Science 1262, no. 7 (2023): 072105. http://dx.doi.org/10.1088/1755-1315/1262/7/072105.

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Abstract A study was carried out on 60 ewes of the Awassi and Karakul breeds, and cross at age of birth, weaned and 6 months in Barakat Abi Al-Fadl Al-Abbas Station in Karbala Governorate, Iraq from the first of June 2022 until the first of June of the year 2023.with the aim of studying relationship between body weights (BW) of lambs and productive performance (PP) through a set of factors (Genetic group - Sex of lamb - Age of dams - Month of birth - Weight of dams), The statistical analysis system (SAS) was used to analyze the data. The result is displayed as follows: The genetic group, the s

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M. Dima Iqbal, dan Sulastri, Dita Tiara, Akhmad Dakhlan,. "KORELASI GENETIK DAN FENOTIP BOBOT SAPIH DAN BOBOT SATU TAHUN KAMBING SABURAI JANTAN DI KECAMATAN SUMBEREJO KABUPATEN TANGGAMUS." Jurnal Riset dan Inovasi Peternakan (Journal of Research and Innovation of Animals) 3, no. 3 (2019): 37–41. http://dx.doi.org/10.23960/jrip.2019.3.3.37-41.

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This research aimed to determine the value of the genetic and phenotypic correlation between weaning weight and yearling weight of male Saburai goat in Sumberejo District, Tanggamus Regency. Ninety male Saburai goats aged one year were used in this study. This research was conducted from May 11th -- July 28th, 2019. The research used primary and secondary data with direct observation in the field and also recording of the livestock from Sumberejo District. The method used was survey method with purposive sampling. Genetic and phenotipic correlation were estimated using halfsib data. Parameters

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Matabane, Matshidiso B., Khathutshelo A. Nephawe, Ronald S. Thomas, et al. "Pre-Weaning Growth Performance of Piglets at Smallholder Farms in Gauteng Province." Journal of Agricultural Science 10, no. 4 (2018): 18. http://dx.doi.org/10.5539/jas.v10n4p18.

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The objective of the study was to determine pre-weaning performance of piglets born following artificial insemination (AI) at smallholder farms of Gauteng province. Data from 496 piglets originating from 73 multiparous crossbred sows were used in the study. Litter size, number of piglets born alive, number of piglets weaned, birth and weaning weights were recorded. Data was analysed using the Proc Univariate procedure of SAS. The average litter size was 11.8. The average birth weight and weaning weights were 1.9 and 6.2 kg, respectively. No significant differences were found between male and f

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Araújo, Cláudio Vieira de, Raysildo Barbosa Lôbo, Luis Gustavo Girardi Figueiredo, et al. "Estimates of genetic parameters of growth traits of Nellore cattle in the Midwest region of Brazil." Revista Brasileira de Saúde e Produção Animal 15, no. 4 (2014): 846–53. http://dx.doi.org/10.1590/s1519-99402014000400006.

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Records of birth weight (BW) and weights standardized to 210 (W210); 365 (W365) and 550 (W550) of age in the Nellore breed were used to estimate variance components of genetic effects and predict genetic values of sires. The model included the fixed effects of contemporary group and cow age at calving as co-variable, and the additive and maternal genetic, permanent maternal environmental, and temporary environmental random effects. Estimates of means and standard deviations for BW, W210; W365 and W550 were 32.76 ± 3.74; 184.30 ± 29.02; 240.31 ± 41.85 and 322.12 ± 60.77, respectively. A signifi

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DINKEL, C. A., W. L. TUCKER, and D. M. MARSHALL. "SOURCES OF VARIATION IN BEEF CATTLE WEANING WEIGHT." Canadian Journal of Animal Science 70, no. 3 (1990): 761–69. http://dx.doi.org/10.4141/cjas90-095.

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Milk production, body condition, body weight and individual feed records for 196 2-yr-old heifers and their calves were used to evaluate sources of variation in weaning weight and its two major components, total energy consumption for the year and efficiency of energy use, defined as weaning weight divided by total energy for cow and calf. Four breed groups of cows including 29 Hereford, 73 Simmental × Hereford, 68 Angus × Hereford and 26 Tarentaise × Hereford were represented over the 6-yr period. Long-horn bulls sired the calves in all but the first 2 yr when Angus bulls were used. Sources o

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Milne, J. A., Angela M. Sibbald, Heather A. McCormack, and A. S. I. Loudon. "The influences of nutrition and management on the growth of red deer calves from weaning to 16 months of age." Animal Science 45, no. 3 (1987): 511–22. http://dx.doi.org/10.1017/s0003356100002993.

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ABSTRACTThe effects of date of weaning, weaning live weight, autumn grazing management and level and pattern of winter nutrition in relation to summer grazing on the live-weight gain of farmed red deer calves to 16 months of age were tested in three experiments.In experiment 1, the effect of two weaning live weights (37 and 46 kg) in September and two levels of autumn and winter nutrition were examined with 48 calves. In October, live-weight gains were positively related to sward height and herbage mass. The calves lost live weight in November. Compensatory live-weight gains of 28 g/day occurr

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Rachmann Noor, R., A. Djajaneegara, and L. Schüler. "Selection to improve birth and weaning weight of Javanese Fat Tailed Sheep." Archives Animal Breeding 44, no. 6 (2001): 649–60. http://dx.doi.org/10.5194/aab-44-649-2001.

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Abstract. In Indonesia, the Javanese Fat Tailed Sheep is a very popular domestic animal for its meat production However selection to increase body weight has never been done by local farmers. As a result the variability of body weight is high, and expected that application of a selection program can improve this trait Two Steps of selection were done in order to improve birth and body weight. In the first selection, the elite group was established by selecting the best 40 females and 3 males from 12500 sheep reared by local farmers based on their mature body weight and tail length. The control

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Mulaudzi, M., E. C. Webb, and M. L. Mashiloane. "The effect of ecotype and year on the production and reproductive performance of Nguni cows in the Limpopo Province of South Africa." South African Journal of Animal Science 55, no. 2 (2025): 64–73. https://doi.org/10.4314/sajas.v55i2.02.

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This study investigated the effects of Nguni cattle ecotype and year on the production and reproductive performance of cows in the Limpopo Province of South Africa. Production data for 471 calvings (142 Venda, 65 Shangaan, and 264 Pedi ecotype Nguni cows) at Mara Research Station were analysed to determine the differences between years and ecotypes in birthweight, weaning weight, days-toreconception, inter-calving period, weight of cow at breeding and at weaning, and weaning efficiency. The effects of ecotype and year on the production and reproduction parameters were analysed using the SAS® m

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Wamnes, S., N. J. Lewis, and R. J. Berry. "The performance of early-weaned piglets following transport: Effect of season and weaning weight." Canadian Journal of Animal Science 86, no. 3 (2006): 337–43. http://dx.doi.org/10.4141/a06-005.

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Two groups of 48 Cotswold piglets weaned at 17 ± 1 d of age were assigned to road or simulated transport during summer or winter. Following transport [Control (<20 min), 6 h, 12 h or 24 h], piglets were grouped by weaning weight (light, medium and heavy) in pens of four. Body weights were recorded on days 1–8, 10, 12 and 14. From an average weaning weight of 6.28 ± 0.09 kg, piglets lost on average 0.4 ± 0.1 kg. The minimum weight of 5.88 ± 0.1 kg was reached 2.24 ± 0.13 d post weaning and weaning weight was recovered at 3.55 ± 0.16 d post weaning. As transport duration increased from 6 to 2

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Littlejohn, Brittni P., David G. Riley, Don A. Neuendorff, Charles R. Long, Thomas H. Welsh, and Ronald D. Randel. "304 Transgenerational influence of prenatal stress on temperament, birth weight, and weaning weight of Brahman calves." Journal of Animal Science 97, Supplement_3 (2019): 3. http://dx.doi.org/10.1093/jas/skz258.003.

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Abstract The objective was to evaluate the transgenerational influence of prenatal transportation stress (PNS) on temperament, birth weight, and weaning weight in Brahman calves. Dams were derived from multiparous cows that were transported for 2 h at 60, 80, 100, 120, and 140 d of gestation (n = 48) or maintained as Controls (n = 48). Heifers born to Transported or Control cows were followed through maturity and their calves (n = 79; 35 calves born to Control dams and 44 to PNS dams) studied across multiple years. Calf birth and weaning weights were recorded. Calf temperament at weaning was e

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