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Journal articles on the topic 'Holstein-Friesian cattle. Cattle Artificial insemination'

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Published: 4 June 2021

Last updated: 13 February 2022

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1

Yohana, Nadia, Abdul Samik, Bimo Aksono, Trilas Sardjito, Herry Agoes Hermadi, and Tjuk Imam Restiadi. "CONCEPTION RATE DAN SERVICE PER CONCEPTION PADA SAPI PERAH AKSEPTOR INSEMINASI BUATAN DI KUD ARGOPURO KECAMATAN KRUCIL KABUPATEN PROBOLINGGO." Ovozoa : Journal of Animal Reproduction 7, no. 2 (2020): 143. http://dx.doi.org/10.20473/ovz.v7i2.2018.143-147.

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Reproduction is one of essential factor directly affecting profitability in a dairy production system. Some of the reproductive factors that influenced to the developing of dairy cattle of small holder’s farmer are Conception Rate (CR) Service per Conception (S/C). The study was conducted to know the CR and S/C of Friesian Holstein in KUD Argopuro, Probolinggo. The data is taken primary and secondary data. Primary data retrieval is done by direct observation, which includes several variables, where the variables include : the identity of the breeder, cages, and feeding and drinking. As for the

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2

BREDBACKA, P., and M. T. KOSKINEN. "Microsatellite panels suggested for parentage testing in cattle: informativeness revealed in Finnish Ayrshire and Holstein-Friesian populations (Research Note)." Agricultural and Food Science 8, no. 3 (1999): 233–37. http://dx.doi.org/10.23986/afsci.5625.

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Informativeness of eleven microsatellite markers suggested for parentage control in cattle by the International Society for Animal Genetics (ISAG) was studied in Finnish Ayrshire and Holstein-Friesian populations. Calculations were based on a sample of 100 non-sib artificial insemination bulls. Assuming one known parent the nine loci suggested for routine testing exhibited exclusion probabilities of 99.84% in the Ayrshires and 99.91% in the Holstein-Friesians. The addition of markers INRA23 and TGLA53, recommended for further investigations, increased the attained values to 99.94% in Ayrshires

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3

Garcia, M., W. Huanca, and L. Echevarria. "Reproductive performance of purebred and crossbred Zebu cattle under artificial insemination in the Amazon tropics." Animal Science 50, no. 1 (1990): 41–49. http://dx.doi.org/10.1017/s0003356100004451.

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ABSTRACTBreeding data from 1543 artificial inseminations, performed on 763 purebred and crossbred zebu cattle reared on 73 small farms, in the Amazon basin of Peru from 1980 to 1986, were evaluated. Inseminations were performed during morning hours using Holstein or Brown Swiss frozen semen. The calving to first oestrus and calving to conception intervals, number of services per conception, intervals between services and conception rate were evaluated. A total of 64-4% of first services and 61-4% of conceptions occurred between the middle of the dry season and the middle of the rainy season. F

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Siddiquee, NU, SMA Rahman, MSA Bhuiyan, AKMA Rahman, MR Amin, and AKFH Bhuiyan. "Practice, preference and performance of cattle under peri-urban dairy management system in Mymensingh." Bangladesh Journal of Animal Science 42, no. 2 (2013): 89–95. http://dx.doi.org/10.3329/bjas.v42i2.18485.

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The objective of this research was to assess the status of cattle in respect of breeding system, quality of breeding services, their production, reproduction, health status, management system and marketing system using an in-depth baseline survey. The mean of homestead land owned by the farmers was 36.17± 32.94 decimal and most of them (48.3%) own very low homestead land (11-50 decimal). Average cultivable land owned was found as 101.52±61.044 decimal and a considerable number of farmers have medium (51-150 decimal) to high (151 onward decimal) land area. From the collected data, it is clear t

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Boodoo, A. A., R. Ramjee, B. Hulman, F. Dolberg, and J. B. Rowe. "The response of creole, friesian and friesian cross cows to concentrate supplementation on village smallholdings in mauritius." Proceedings of the British Society of Animal Production (1972) 1989 (March 1989): 143. http://dx.doi.org/10.1017/s0308229600011338.

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Milk production in the villages of Mauritius can be characterised as follows: about 90% of the ‘dairy’ cows on the island are owned by villagers. Cattle-rearing is a side-line activity of the family. Most villagers own one cow With a calf. No forage is cultivated. Forage sources for the cattle include sugar cane tops from June to December (harvest season) and shrubs and mixed grasses from road sides and common lands all the year round. All forages are available free and are collected by hand. There is very little or no use of concentrate supplements.The cattle are a mixture of the local Creole

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Van Doormaal, B. J., and G. J. Kistemaker. "Dairy genetic improvement through artificial insemination, performance recording and genetic evaluation." Canadian Journal of Animal Science 83, no. 3 (2003): 385–92. http://dx.doi.org/10.4141/a03-023.

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Artificial insemination (AI) of dairy cattle in Canada was started more than half a century ago and today it is estimated that at least 75% of all dairy cattle nationally are bred using this common reproductive technology. A Best Linear Unbiased Prediction sire model for estimating genetic evaluations for production traits was introduced in 1975. The combination of extensive use of AI with genetic evaluations for bulls and cows has resulted in significant phenotypic and genetic gains over the past 20 yr. In the Holstein breed, mature equivalent yields have increased by an average of 200 kg mil

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Manomohan, Vandana, Ramasamy Saravanan, Rudolf Pichler, et al. "Legacy of draught cattle breeds of South India: Insights into population structure, genetic admixture and maternal origin." PLOS ONE 16, no. 5 (2021): e0246497. http://dx.doi.org/10.1371/journal.pone.0246497.

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The present study is the first comprehensive report on diversity, population structure, genetic admixture and mitochondrial DNA variation in South Indian draught type zebu cattle. The diversity of South Indian cattle was moderately high. A significantly strong negative correlation coefficient of -0.674 (P<0.05) was observed between the effective population size of different breeds and their estimated FIS. The genetic structure analysis revealed the distinctness of Kangayam, Vechur and Punganur cattle from the rest of the zebu breeds. The results showed the influence of Hallikar breed in the

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Zubor, Tibor, Gabriella Hollo, Roland Pósa, Henrietta Nagy-Kiszlinger, Zsófia Vigh, and Balázs Húth. "Effect of rectal temperature on efficiency of artificial insemination and embryo transfer technique in dairy cattle during hot season." Czech Journal of Animal Science 65, No. 8 (2020): 295–302. http://dx.doi.org/10.17221/14/2020-cjas.

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This study aimed to evaluate the effects of rectal temperature (RT) as well as artificial insemination (AI) technique on pregnancy rates in Holstein cows and artificial insemination or embryo transfer (ET) techniques in Holstein heifers during summer. The experiments were conducted on five dairy farms in Hungary, where 1 631 data were examined. The RT was measured immediately before reproductive techniques using a digital thermometer. The effects of animal group and month on RT were analysed. The enhancement of RT until September can be seen in heifers, but the highest RT of cows occurred duri

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Skalova, Iva, Tamara Fedorova, and Karolina Brandlova. "Saliva Crystallization in Cattle: New Possibility for Early Pregnancy Diagnosis?" Agricultura tropica et subtropica 46, no. 3 (2013): 102–4. http://dx.doi.org/10.2478/ats-2013-0018.

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Abstract Saliva sampling is a non-invasive, simple and low-cost procedure. The aim of this study was to confirm the presence and changes of saliva crystallization in domestic cattle during synchronized oestrous cycle and early pregnancy. We verified saliva crystallization as a method for early pregnancy diagnosis. Eight Holstein cows were included into the research. The samples were collected daily from 16th day before to 34th day after artificial insemination (in total 51 days). We observed the following types of crystallization: none, dotted, branch-like, fir-like, fern-like and combinations

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Ferris, C. P., D. C. Patterson, and D. J. Kilpatrick. "A comparison of the reproductive performance of Holstein-Friesian and Norwegian Red dairy cattle on commercial dairy farms over five lactations." Proceedings of the British Society of Animal Science 2009 (April 2009): 61. http://dx.doi.org/10.1017/s1752756200029008.

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Fertility traits have been included within breed selection programmes for the Norwegian Red (NR) dairy cow population in Norway for over thirty years. As a consequence, a 60 day non-return rate to first artificial insemination (AI) of 72.5% was recently calculated for NR cows in Norway (Garmo et al., 2008). In view of this long term breeding programme, and current fertility performance within Norway, there is considerable interest in the NR breed as a means of overcoming the high levels of infertility that currently exist within the Holstein-Friesian (HF) breed. However, farming systems within

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Madgwick, PA, and ME Goddard. "Comparison of purebred and crossbred dairy cattle for Victoria: estimation of genetic effects for yield." Australian Journal of Experimental Agriculture 29, no. 1 (1989): 1. http://dx.doi.org/10.1071/ea9890001.

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The yield performances of pure and crossbred dairy cattle (bred by artificial insemination) were compared using a sample of 253 422 herd-recorded Victorian dairy cattle. Pure breed groups included Holstein-Friesian (HF), Jersey (Jer), Ayrshire (Ayr), Guernsey (Gue) and Australian Illawarra Shorthorn (AIS), although numbers of Ayr, Gue and AIS were very small. The model analysed included breed additive and maternal effects, as well as heterosis and epistatic effects. Sire's Australian Breeding Value and number of generations of A1 breeding were also included. Purebred HF was found to outproduce

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12

Becker, F., H. Alm, F. Schneider, H. Nehring, L. Rothe, and W. Kanitz. "10 TIMED ARTIFICIAL INSEMINATION IN CATTLE WITH REDUCED DOSAGE OF SPERMATOZOA." Reproduction, Fertility and Development 17, no. 2 (2005): 155. http://dx.doi.org/10.1071/rdv17n2ab10.

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Estrus detection and determination of time of insemination are very important factors in reproduction management of cattle. Therefore an estrus synchronization schedule in combination with induction of ovulation and a single insemination at a predetermined time in dairy cattle was established to achieve high pregnancy rates (Kanitz etal. 2002 Reprod. Nutr. Dev. 42, 587–599; Becker et al. 2004). The aim of the recent study was to investigate the influence of the number of spermatozoa per insemination dosage on embryo development and the interrelationship between number of accessory sperms per e

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Harstine, Bo, Lorna Marshall, and Mel DeJarnette. "113 Genetics Industry Infrastructure: How Are Artificial Insemination Organizations Adapting to Changes in the Beef Industry?" Journal of Animal Science 99, Supplement_1 (2021): 40–41. http://dx.doi.org/10.1093/jas/skab054.071.

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Abstract Cattle artificial insemination (AI) organizations are adapting quickly to changes within the beef industry domestically and abroad. Specifically, the increasing utilization of beef bulls, predominately Angus, in dairy herds to create terminal crossbred calves for beef underlies the majority of the changes and challenges. The procurement, management, and collection of beef sires on a commercial scale has become commonplace for AI organizations, and the subsequent optimization of beef sire housing, nutritional requirements, behavior surrounding semen collection, semen production ability

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Hagan, Bernard Ato, and Roger Cue. "Generation intervals in Canadian dairy cattle herds." Canadian Journal of Animal Science 100, no. 1 (2020): 175–83. http://dx.doi.org/10.1139/cjas-2019-0053.

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Genetic evaluation records for the Canadian Holstein, Ayrshire, Jersey, and Brown Swiss bulls and cows born from 1950 and 1960, respectively, were used to study the generation intervals (L) along the four-path selection model. The objectives of the study were to determine the L in the four dairy cattle breeds and the effects of some environmental factors and variations among herds or artificial insemination (AI) studs on the L achieved. Total L of the four selection paths was reduced by 55% from 29.2 yr in 1980 to 13.2 yr in 2016 in the Holstein breed. Substantial reductions in total L were al

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Cabrera, Victor E., and Paul M. Fricke. "Economics of Twin Pregnancies in Dairy Cattle." Animals 11, no. 2 (2021): 552. http://dx.doi.org/10.3390/ani11020552.

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Twinning in Holstein dairy cows has increased over time concurrent with increased milk production. Twinning in dairy cattle is not desirable due to the negative effects on both cows that calve twins and calves born as twins that result in economic losses to dairy farms. Although a twin pregnancy could bring additional income from extra calves and shorten gestation length, twinning compromises milk production, increases the incidence of dystocia and perinatal mortality, decreases calf birth weight, increases the incidence of metabolic diseases, decreases fertility, increases the incidence of fr

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Duncan, Robert B., Colin B. Carrig, Jorgen S. Agerholm, and Christian Bendixen. "Complex Vertebral Malformation in a Holstein Calf: Report of a Case in the USA." Journal of Veterinary Diagnostic Investigation 13, no. 4 (2001): 333–36. http://dx.doi.org/10.1177/104063870101300409.

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Complex vertebral malformation (CVM), a familial syndrome of Holstein calves, has been reported in aborted fetuses and in prematurely born, stillborn, and neonatal calves. Affected calves have anomalies in the vertebral column, including hemivertebrae, fused and misshapen vertebrae and ribs, scoliosis, and vertebral synostosis. Concurrent low body weight, symmetrical arthrogryposis, and cardiac anomalies have been documented in affected calves. The syndrome was identified and characterized in Holstein cattle in Denmark; however, a global distribution of this genetic disorder is likely based on

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17

Hansen, C., J. N. B. Shrestha, R. J. Parker, G. H. Crow, and J. N. Derr. "Genetic base and inbreeding of Canadienne, Brown Swiss, Holstein and Jersey cattle in Canada." Animal Genetic Resources Information 33 (April 2003): 11–19. http://dx.doi.org/10.1017/s1014233900001590.

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SummaryThe narrowing of the genetic base is of major concern to many cattle breeders and this is a consequence of a small effective population size and an increase in the inbreeding coefficient in cattle populations. Studies of pedigrees of cattle populations found in Canada showed that the effective population size and rate of inbreeding over a 12-year period (1983–94) were 123 and 0.412 percent for Canadienne, 975 and 0.054 percent for Brown Swiss, and 2 183 and 0.024 percent for Jersey cattle populations. Over the same period, the year to year trends in inbreeding coefficients based on co-a

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18

Ayad, Abdelhanine, Hanane Derbak, and Omar Besseboua. "Using commercial enzyme immunoassay for measuring pregnancy-associated glycoproteins to diagnose pregnancy in dairy cows under field conditions in Algeria." RUDN Journal of Agronomy and Animal Industries 16, no. 2 (2021): 154–66. http://dx.doi.org/10.22363/2312-797x-2021-16-2-154-166.

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The purpose of the present work was to study effectiveness for early pregnancy diagnosis in cattle of the new enzyme immunoassay (EIA) sandwich kit commercially available based on the measurement of pregnancy-associated glycoproteins (PAGs). 120 Holstein-Friesian cattle of mixed age and parity were comprised from different dairy herds. The pregnant females (n = 68) were diagnosed by ultrasonography at day 35-40 after artificial insemination and confirmed by transrectal exploration at 2-3 months after AI. The non-pregnant females (n = 52) were housed in the absence of males during the experimen

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A.K, Nita Opi. "EFISIENSI REPRODUKSI SAPI PERAH FRIESIAN HOLSTEIN (Studi kasus Di Peternakan Bapak Nur Trianto Desa Ngaglik Kecamatan Srengat Kabupaten Blitar)." AVES: Jurnal Ilmu Peternakan 10, no. 1 (2016): 6. http://dx.doi.org/10.35457/aves.v10i1.327.

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This research have done at Mr. Nur Trianto ’s dairy cow breeding, which placed at Ngaglik village, Srengat districk, Blitar, began at 11th until 24th June 2012. This research in order to know the CR, S/C, and NRR grade of his dairy cows.The materials of this research are 30 dairy cows Friesian Holstein (FH) with 63,3% as CR valve, so the conception number is on the standart. Then, S/C value is 1,5, this value shows that S/C value in this breeding is very good. And the last is NRR value, it ’s 63,3%, it means that 63,3% or 19 dairy cows do not want be inseminated again after the farmer doing ar

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ANİTAŞ, Özgül, and Serap GÖNCÜ. "Investigation of body secretions as bioindicators in cattle estrus detection." TURKISH JOURNAL OF VETERINARY AND ANIMAL SCIENCES 44, no. 5 (2020): 1070–86. http://dx.doi.org/10.3906/vet-2002-74.

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The accurate determination of estrus has a fundamental role in cattle reproduction management. The determination of volatile chemical compounds (pheromones) secreted only during estrus in all body fluids can be used for determining accurate estrus time and artificial insemination time and have a potential role in technological animal reproduction control. In this study, Holstein cows were synchronized and their sudor, urine, feces, milk, saliva, vaginal secretions, and blood samples were taken in the preestrus, estrus, and postestrus periods and analyzed by gas chromatography-mass spectrometry

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Malinda, Dewi, Hari Santoso, and Husain Latuconsina. "Analisis Viabilitas Spermatozoa Sapi Friesian Holstein (Bos taurus) Post Thawing Semen Beku Dengan Pengaruh Suhu dan Lama Waktu Thawing Berbeda." BIOSAINTROPIS (BIOSCIENCE-TROPIC) 6, no. 2 (2021): 46–51. http://dx.doi.org/10.33474/e-jbst.v6i2.351.

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The principle of freezing semen is to maintain the survival of sperm in the long term (long term preservation). Thawing is the process of thawing frozen cattle semen before it is used in the artificial insemination process (IB). This thawing has a big influence on the state of sperm, especially on the integrity of sperm in semen, depending on the temperature and length of time. The choice of temperature and length of time thawing is good and right can prevent damage to spermatozoa. The purpose of this study was to analyze the effect of differences in temperature and the length of post thawing

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Gaya, Leila de Genova, Diego de Córdova Cucco, Leandro Homrich Lorentz, et al. "Genetic profile of Holstein and Jersey dairy bull lines available in Brazil." Revista Brasileira de Saúde e Produção Animal 15, no. 1 (2014): 261–69. http://dx.doi.org/10.1590/s1519-99402014000100006.

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The Holstein and Jersey dairy cattle breeds are among the most prevalent in Brazil. To evaluate differences among the PTAs (predicted transmitting abilities) of these breeds and their lines, data were collected on 385 Holstein bulls and 82 Jersey sires with semen commercially available from nine Brazilian companies. Three different sire lines for each breed were found. The general linear models method was used for the comparison among lines and between breeds. The two most prevalent lines of Holstein breed presented higher average PTAs for milk yield (1,061.04 pounds and 975.32 pounds) and low

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Shan, Shuwen, Fangzheng Xu, Martina Bleyer та ін. "Association of α/β-Hydrolase D16B with Bovine Conception Rate and Sperm Plasma Membrane Lipid Composition". International Journal of Molecular Sciences 21, № 2 (2020): 627. http://dx.doi.org/10.3390/ijms21020627.

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We have identified a Holstein sire named Tarantino who had been approved for artificial insemination that is based on normal semen characteristics (i.e., morphology, thermoresistance, motility, sperm concentration), but had no progeny after 412 first inseminations, resulting in a non-return rate (NRdev) of −29. Using whole genome association analysis and next generation sequencing, an associated nonsense variant in the α/β-hydrolase domain-containing 16B gene (ABHD16B) on bovine chromosome 13 was identified. The frequency of the mutant allele in the German Holstein population was determined to

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Carmo, Adriana S., Marcello Santos, Larissa Braga, and Arthur Mascioli. "PSVIII-35 The impact of daughter pregnancy rate on the reproductive efficiency of Brazilian dairy herds." Journal of Animal Science 97, Supplement_3 (2019): 262. http://dx.doi.org/10.1093/jas/skz258.534.

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Abstract In tropical countries, it is common to import semen from dairy taurine cattle breeds based on the genetic evaluations carried out in the countries of origin. Therefore, the objective of this study is to verify if the selection of sires based on the DPR (daughter pregnancy rate) estimated in the US genetic evaluation implies on the reduction of the days open of their daughters in Brazil. Data were collected from 325 daughters of 42 Holstein bulls stratified by DPR (DPR &lt; -2, DPR &gt; -2 and &lt; 0, DPR &gt; 0 and &lt; 2, Group DPR &gt; 2). The DPR data was co

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Fernandez-Novo, Aitor, Octavi Fargas, Juan Manuel Loste, et al. "Pregnancy Loss (28–110 Days of Pregnancy) in Holstein Cows: A Retrospective Study." Animals 10, no. 6 (2020): 925. http://dx.doi.org/10.3390/ani10060925.

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The objective of this retrospective study was to investigate the prevalence of pregnancy loss (PL; between 28–110 pregnancy days) and its relationship with factors: farm, year (2015–2018), season, artificial insemination (AI)-rank, parity, AI-type (fixed-time vs. oestrus-AI), previous PL, days in milk (DIM), fixed-time-AI protocol, AI-technician, bull, and semen-type (sexed vs. conventional). Data of 19,437 Holstein cattle AIs from eight Spanish farms were studied. Overall conception rate was 34.3% (6696/19,437) and PL 12.3% (822/6696). The PL was more likely to occur in primiparous (10.8%, od

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Stefańska, Barbara, Agnieszka Poźniak, and Włodzimierz Nowak. "Relationship between the pre- and postpartum body condition scores and periparturient indices and fertility in high-yielding dairy cows." Journal of Veterinary Research 60, no. 1 (2016): 81–90. http://dx.doi.org/10.1515/jvetres-2016-0012.

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Abstract Introduction: The aim of this study was to investigate the relationship between body condition score (BCS) determined on the dry-off day, calving day, and in the first month of lactation, its changes during the dry period and early lactation, and periparturient indices and fertility in high-producing dairy cows. Material and Methods: The experiment was conducted in two herds: A and B, located in Western Poland. The studies were conducted on 116 and 108 Polish Holstein-Friesian dairy cows respectively, with an average milk yield of >10 000 kg/305-day lactation. The experiment includ

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Aleksic, S., M. M. Petrovic, Lj Sretenovic, V. Pantelic, D. Tomasevic, and D. Ostojic-Andric. "Cattle production: Current situation and future directions of development in Republic of Serbia." Biotehnologija u stocarstvu 23, no. 5-6-1 (2007): 1–10. http://dx.doi.org/10.2298/bah0701001a.

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Number of heads of cattle in the last 11 years is constantly decreasing. In this period, number of cattle is reduced by 18%. Number of cows and pregnant heifers reduced by 14%. Data indicate that at the end of 2006 1,096.000 heads of cattle were registered. It should be pointed out that number of cows and pregnant heifers of 710.000 heads at the end of 2006 which are included in reproduction represent the future of Serbian cattle production in future. Dominant breeds are Domestic Spotted and Simmental cattle, participating by about 70% in total number, then crossbreds of Domestic Spotted and S

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Sah, A. K., Y. R. Pandeya, L. R. Pathak, and G. Gautam. "Controlled Internal Drug Release (CIDR) Based Hormonal Protocols Effect upon Estrus Response and Pregnancy Outcome in Anestrous Cows." Nepalese Veterinary Journal 36 (December 1, 2019): 46–52. http://dx.doi.org/10.3126/nvj.v36i0.27752.

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Controlled internal drug release (CIDR) based hormonal protocols CoSynch + CIDR, OvSynch + CIDR and CIDR + PGF2α were applied to 25 crossbred anestrous Holstein and Jersey cows to improve the fertility at the farm of National Cattle Research Programme, Rampur, Chitwan. All three protocols were found equally effective (P>0.05) with 100% estrus expression rate, out of which, 80% (8/10), 85.7% (6/7) and 75% (6/8) had estrus expression with well cervix open at fixed time artificial insemination in CoSynch + CIDR, OvSynch + CIDR and CIDR + PGF2α protocols respectively and rest had estrus express

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Arat, S., S. Pabuccuoglu, H. Sagirkaya, et al. "22 SEMEN AND REPRODUCTIVE PROFILES OF CLONED ANATOLIAN GREY CATTLE." Reproduction, Fertility and Development 27, no. 1 (2015): 103. http://dx.doi.org/10.1071/rdv27n1ab22.

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Anatolian grey cattle (endangered native Anatolian cattle) as 1 male (clone 1) and 4 females (clones 2–5) were produced from cells of 1 male and 1 female cattle by somatic cell nuclear transfer (SCNT) in a previous study. In this study, we examined the reproductive potential of these cloned animals, which are now 4 and 5 years old. The parameters evaluated by phase contrast microscopy for motility, TUNEL for DNA fragmentation, eosin staining for viability, Hoechst 33258 staining and hypo-osmotic swelling test (HOST) for membrane integrity, and fluorescein isothiocyanate-Pisum sativum agglutini

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Aleksic, S., S. Sunfang, Z. Jingming, et al. "Cattle production: PR China and Republic of Serbia." Biotehnologija u stocarstvu 28, no. 4 (2012): 635–48. http://dx.doi.org/10.2298/bah1204635a.

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The paper presents data on the cattle industry in the People's Republic of China and the Republic of Serbia. China is the third largest dairy producing country and the third largest beef producing country in the world. In 2011, the dairy cow population in China was 14.4 million. Chinese dairy breed is mainly obtained by grading hybridization from Holstein, Simmental, etc. which were introduced from foreign countries, and local cattle breeds for long time to form the offspring with stable genetic characteristics. Currently, the dairy breeds cultured in China mainly include Chinese Holstein, Chi

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Gerhardt, B. T., L. D. P. Sinedino, A. P. Dourado, P. A. M. Alves, and L. A. G. Nogueira. "368 CONCEPTION RATE AT FIRST ARTIFICIAL INSEMINATION WITH SEXED SEMEN OR CONVENTIONAL SEMEN IN CROSSBRED DAIRY COWS." Reproduction, Fertility and Development 22, no. 1 (2010): 340. http://dx.doi.org/10.1071/rdv22n1ab368.

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The use of sexed semen in dairy cattle almost eliminates the birth of unwanted male calves and can lead to increased milk production by means of genetic selection exerted on the females. However, AI with sexed semen still presents several obstacles to overcome. Holstein-Zebu cows are responsible for 80% of the milk produced in Brazil. These crossbred animals are used extensively throughout the country because their physiologic and morphologic characteristics are compatible with milk production in the tropics which results in an economic performance advantage. The objective of this study is to

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Leshchuk, T. L., G. E. Uskov, and A. V. Tsopanova. "The state of dairy cattle breeding in the Kurgan region." Glavnyj zootehnik (Head of Animal Breeding), no. 4 (April 1, 2021): 14–23. http://dx.doi.org/10.33920/sel-03-2104-02.

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The purpose of the work was to analyze the state of dairy cattle breeding in the Kurgan region. In the region measures are systematically taken to improve the efficiency of the organization of selection and breeding work, improve reproduction traits, introduce advanced feeding methods, and organize artificial insemination of farm animals. Breeding work with dairy cattle in the region is aimed at creating animals that combine the adaptive properties and valuable features of Black-and-White cattle of the Trans-Urals with high productivity and suitability for intensive technology. It has been est

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Deaver, Stacie E., Adrienne M. Felix, Roy L. Ax, and Michelle L. Rhoads. "Pregnancy Rates of Lactating Holstein Dairy Cattle Following Intrauterine Administration of a Prostaglandin F2a Receptor Antagonist Four Days after Artificial Insemination." Biology of Reproduction 87, Suppl_1 (2012): 331. http://dx.doi.org/10.1093/biolreprod/87.s1.331.

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Samusenko, Ludmila, Andrey Mamaev, Natalya Rodina, and Ekaterina Sergeeva. "Practical use of bioenergetic evaluation of sire-bulls with different quality of semen production." BIO Web of Conferences 32 (2021): 04003. http://dx.doi.org/10.1051/bioconf/20213204003.

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For modern cattle industry, it is very important to evaluate bull-sires of different breeds by semen quality. The relevance of this problem arises in the context of development of artificial insemination technologies and biotechnology, the increasing role of sire-bulls in the genetic improvement of the herd, which makes it possible to significantly change the breed composition of herds in large regions in a short period of time. In cattle breeding, sires of Black-and-white and Holstein black-and-white breeds, which are imported into the Russian Federation, are used almost throughout the countr

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Islam, MR, MH Talukder, MB Hossain, and MA Karim. "Investigation of sexually transmitted protozoan parasite Tritrichomonas foetus in cattle in Bangladesh." Journal of the Bangladesh Agricultural University 15, no. 1 (2017): 47–54. http://dx.doi.org/10.3329/jbau.v15i1.33529.

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Bovine trichomoniasis is a venereal disease caused by the protozoa Tritrichomonas foetus. The aim of the study was to investigate the prevalence of T. foetus in cattle and associated risk factors. A total of 200 samples from 183 cows and 17 bulls were collected from Veterinary Teaching Hospital, Bangladesh Agricultural University; Mymensingh district and Regional station of Bangladesh Livestock Research Institute in Shahjadpur, Sirajgonj during the period from March 2015 to May 2016. Among 200 cattle, 65 were indigenous, 100 were Holstein cross and 35 were Shahiwal cross bred. The collected sa

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Luz, Gabriela Bueno, Andressa Stein Maffi, Lucas Balinhas Farias, et al. "Effects of the Bull on Conception Rate of Dairy Cows in Different Seasons and According to AI Type." Acta Scientiae Veterinariae 46, no. 1 (2018): 6. http://dx.doi.org/10.22456/1679-9216.82554.

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Background: Reproductive efficiency is one of the most important factors affecting the performance dairy cattle, and fixedtime artificial insemination (TAI) is an important biotechnology factor employed in bovine livestock. The achievement of satisfactory results in TAI protocols depends of several factors, such as health and body condition, milk yield, environmental temperatures, ovulation time, semen manipulation, as well as semen quality. The goal of this study was to evaluate the conception rate of heifers and multiparous cows based on different Holstein bulls used for artificial inseminat

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Siddiquee, NU, TK Tripura, MT Islam, SA Bhuiyan, AKMA Rahman, and AKFH Bhuiyan. "Prevalence of sub-clinical mastitis in high yielding crossbred cows using Draminski mastitis detector." Bangladesh Journal of Veterinary Medicine 11, no. 1 (2014): 37–41. http://dx.doi.org/10.3329/bjvm.v11i1.17731.

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The subclinical mastitis (SCM) causes great economical loss in dairy farms due to reduction in milk production. The objectives of the study were to know the prevalence of subclinical mastitis in lactating cows using Draminski mastitis detector and to evaluate the efficacy of intramammary infusion against SCM in lactating dairy cows. The study was conducted in crossbred dairy cattle in peri-urban dairy production system within seven kilometers around the artificial insemination Centre, Bangladesh Agricultural University, Mymensingh during April, 2011 to May, 2012. The overall prevalence of SCM

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Pantelić, V., L. Samolovac, S. Aleksić, et al. "Heritability of type traits in first calving Black and White cows." Archives Animal Breeding 53, no. 5 (2010): 545–54. http://dx.doi.org/10.5194/aab-53-545-2010.

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Abstract. Group of secondary traits such as health, longevity, type and milkability represents some of very important factors for successful milk production. These traits have been given great importance in recent years. In order to realize productive life of dairy cows as long and successful as possible, special attention should be directed to traits of type and body constitution. Objective of the research was to establish heritability coefficients for 14 type traits of first calving Black and White cows, effect of genetic and paragenetic factors (bull sires, farm, year and season of calving,

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Kramarenko, A. S., A. A. Lopukchov, E. A. Gladyr, et al. "206 GENOME-WIDE ASSOCIATIONS FOR REPRODUCTIVE TRAITS IN RUSSIAN HOLSTEIN POPULATION." Reproduction, Fertility and Development 27, no. 1 (2015): 194. http://dx.doi.org/10.1071/rdv27n1ab206.

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Reproductive health is an important trait in selection of dairy cattle. A genome-wide association study (GWAS) is a powerful tool for annotating phenotypic effects on the genome and to get knowledge of genes and chromosomal regions associated with reproductive performance (Cole et al. 2011). Combining GWAS and genetic profiling of embryos before implantation enables to develop new strategies to select elite breeding genotypes before transfer (Humblot et al. 2010; Ponsart et al. 2013). The aim of the current study was to evaluate the association between single nucleotide polymorphisms (SNP) and

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Bajagai, Yadav Sharma. "Multiple Ovulation and Non-Surgical Embryo Transfer in Cattle by Using Intravaginal Controlled Internal Drug Release (CIDR) Progesterone Inserts." Nepal Journal of Science and Technology 14, no. 1 (2013): 15–22. http://dx.doi.org/10.3126/njst.v14i1.8872.

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This paper has been presented to share the protocol and techniques of multiple ovulation and non-surgical embryo transfer in cattle among Nepalese animal scientists. Three elite Holstein cows kept for research and study purpose in the animal farm of the University of Queensland, Gatton, Australia were selected as donors of the embryo for this multiple ovulation and embryo transfer program. Similarly, 11 Holstein heifers of age 14 to 20 months from the same farm were selected as recipients for the program. Synchronization of estrus in both donor and recipients and superovulation in donor has be

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Srikandakumar, A., A. Mohammed, and A. AI-Abri. "Efficiency of Intravulval Lip Route of Prostaglandin F2a Administration on Estrus Synchron." Journal of Agricultural and Marine Sciences [JAMS] 6 (January 1, 2001): 1. http://dx.doi.org/10.24200/jams.vol6iss0pp1-4.

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Estrus was synchronized in dairy cattle using the synthetic prostaglandin F2a (PG) analog Estnunate (Coopers Animal Health Ltd., Berkhamsed, England. UK; 250 ug/ml of cloprostenol). PG was administered by two routes at two different doses, 500 ug by im route (control) and 125 pg by intravulval lip (ivu) route (treatment). All animals were bred by artificial insemination (AI) to detected estrus using the am-pm breeding rule (BR). First service conception rate (FSCR) for all dairy cows and heifers was 70% for the control and 54% for the treatment groups (P>0.05). The FSCR was also not differe

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Lee, R. S. F., J. Peterson, and D. N. Wells. "52GREATER PHENOTYPIC VARIABILITY IN CLONED CATTLE FETUSES FROM ONE CELL LINE THAN CONTEMPORARY HALF-SIBS GENERATED BY ARTIFICIAL INSEMINATION OR IN VITRO EMBRYO PRODUCTION." Reproduction, Fertility and Development 16, no. 2 (2004): 148. http://dx.doi.org/10.1071/rdv16n1ab52.

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The cloning of cattle by somatic cell nuclear transfer (NT) is associated with considerable variation in developmental abnormalities. Some of this variation may be due to the cell types/lines used and the specific production and culture methods for NT embryos. Fetal and placental development were studied in 24 pregnancies generated by NT (Wells et al., 2003 Theriogenology 59, 45–59) from a granulosa cell line. The controls consisted of 11 and 14 pregnancies resulting from in vitro-produced embryos (IVP) and artificial insemination (AI), respectively. All fetuses shared the same Friesian sire;

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Puentes, Rodrigo, Laureana De Brun, Agustina Algorta, et al. "HORIZONTAL TRANSMISSION DYNAMICS OF BOVINE LEUKEMIA VIRUS (BLV) AND NEGATIVE EFFECT ON REPRODUCTIVE PERFORMANCE IN NATURALLY INFECTED HOLSTEIN HEIFERS." Science And Animal Health 4, no. 3 (2017): 294. http://dx.doi.org/10.15210/sah.v4i3.8295.

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BLV causes one of the most relevant viral diseases of dairy cattle although the most of the infected animals are asymptomatic. There are controversies regarding reproductive losses on infected herds. Our purpose was to evaluate the horizontal transmission of the virus in a group of Holstein heifers confined in a rearing system and to determine the impact of infection on reproductive performance. Three hundred eighty-nine animals were sampled and seroconversion was determined by ELISA. The occurrence of estrous behavior, number of services/pregnancy, conception rate, percentage of pregnant anim

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Gümen, A., A. Keskin, G. Yilmazbas-Mecitoglu, E. Karakaya, S. Cevik, and F. Balci. "Effects of GnRH, PGF_2α and oxytocin treatments on conception rate at the time of artificial insemination in lactating dairy cows." Czech Journal of Animal Science 56, No. 6 (2011): 279–83. http://dx.doi.org/10.17221/1283-cjas.

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In several studies, hormones such as gonadotropin-releasing hormone (GnRH), prostaglandins and oxytocin were used to increase pregnancy rate by inducing ovulation and improving the sperm transport in the female reproductive tract in lactating dairy cattle. The objective of this study was to compare the effects of GnRH, prostaglandin F<sub>2&alpha;</sub> (PGF<sub>2&alpha;</sub>) and oxytocin treatments at the time of artificial insemination (AI) after spontaneous oestrus on the conception rate (CR) of lactating dairy cows. Oestrus was detected by visual observati

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Bonev, G. "Application of P4 rapid test and exogenous source of progesterone in prevention of early embryonic death in dairy cows." Agricultural Science and Technology, Volume 13, Issue 1 (March 2021): 24–27. http://dx.doi.org/10.15547/ast.2021.01.004.

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Abstract. The objectives of this study were: 1) to determine the percent of cows with low P4 at Day 7-8 post-AI; 2) to treat the animal with low progesterone for 14 days with a P4-releasing intravaginal device (PRID DELTA); 3) to analyze the influence of P4 exogenous supplementation on pregnancy rate in treated and non-treated cows and 4) to create a protocol using “P4 Rapid” test allowing increased pregnancy rate under farm conditions. For this purpose, the current study has been conducted on 155 repeat breeding Holstein cows (<3 artificially inseminated – AI) with prolonged estrus cycle (

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Petit, H. V., J. A. Small, M. F. Palin, A. Giguère, and G. T. D. Santos. "Effects of flaxseed supplementation on endometrial expression of ISG17 and intrauterine prostaglandin concentrations in primiparous dairy cows submitted to GnRH-based synchronized ovulation." Canadian Journal of Animal Science 87, no. 3 (2007): 343–52. http://dx.doi.org/10.4141/cjas06017.

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The objective of the experiment was to determine the effects of feeding whole flaxseed on ovarian function and uterine concentration of prostaglandins on the 17th day post-ovulation. Fortyeight primiparous Holstein cows averaging 550 kg of body weight (BW) were allotted at 2 wk postpartum to two groups of 24 animals: a control diet with no added fat (CON) or a diet with 9% whole flaxseed (FLA). At 6 wk postpartum cows were subjected to a Presynch-Ovsynch protocol with and without artificial insemination on day 0. Real-time transrectal ultrasonography and plasma progesterone concentrations were

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Ducker, M. J., S. V. Morant, W. J. Fisher, and Rosemary A. Haggett. "Nutrition and reproductive performance of dairy cattle 2. Prediction of reproductive performance in first lactation dairy heifers subjected to controlled nutritional regimes." Animal Science 41, no. 1 (1985): 13–22. http://dx.doi.org/10.1017/s0003356100017505.

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ABSTRACTOne hundred first lactation Friesian dairy heifers were used to investigate the effect of level of feeding n i late pregnancy (83·6 or 64·6 MJ metabolizable energy (ME) per head daily and around the time of first artificial insemination (AI) (weeks 6 to 18 of lactation: 146·8 or 119·8 MJ ME per head daily) on reproductive performance.Heifers receiving the high level of feeding in lactation had a successful pregnancy rate to first AI of 0·42 compared with 0·63 for heifers receiving the lower level of feeding. Heifers receiving the higher level of feeding in late pregnancy followed by th

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Viramontes, F., F. Filion, and L. C. Smith. "5 NEUTRAL SEGREGATION OF DONOR CELL MITOCHONDRIA IN FETAL AND ADULT TISSUES OF SOMATIC CELL CLONES IN CATTLE." Reproduction, Fertility and Development 17, no. 2 (2005): 153. http://dx.doi.org/10.1071/rdv17n2ab5.

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Until now, animal cloning has been extremely inefficient: only 1–2% of nuclear transfer (NT) clones survive to birth. Some of these anomalies may be related to an incompatibility between nuclear and mitochondrial genes (Cummins JM 2001 Hum. Reprod. Update 7, 217–228). Controversy exists as to the levels of donor cell mitochondrial DNA (mtDNA) inheritance in somatic clones (heteroplasmy). Whereas some researchers found very low quantities (0.1–4%) (Steinborn R et al. 2000 Nat. Genet. 25, 255–257), others found levels of heteroplasmy ranging from 6 to 40% (Takeda et al. Mol. Reprod. Dev. 64, 429

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Ducker, M. J., Rosemary A. Haggett, W. J. Fisher, S. V. Morant, and Glenys A. Bloomfield. "Nutrition and reproductive performance of dairy cattle 1. The effect of level of feeding in late pregnancy and around the time of insemination on the reproductive performance of first lactation dairy heifers." Animal Science 41, no. 1 (1985): 1–12. http://dx.doi.org/10.1017/s0003356100017499.

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ABSTRACTOne hundred first lactation Friesian dairy heifers were used to investigate the effect of level of nutrition n i late pregnancy and for a limited period around the time of insemination on reproductive performance. The heifers were housed throughout the period of the trial in cubicle yards and all individuals were given controlled amounts of food.Fifty animals were offered a ‘high’ (H) level of feeding in late pregnancy (for 10 weeks before calving) and 50 were offered a ‘low’ (L) level. After calving, the heifers were re-randomized with half of each pre-calving group being offered eith

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Morrow, C., M. Berg, R. McDonald, D. Wells, A. Peterson, and R. Lee. "54 COMPOSITION OF ALLANTOIC FLUID IN CATTLE PREGNANT WITH AI-, IVP-, OR NUCLEAR TRANSFER-GENERATED EMBRYOS." Reproduction, Fertility and Development 17, no. 2 (2005): 177. http://dx.doi.org/10.1071/rdv17n2ab54.

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Abnormal placentation, pregnancy failure, and hydroallantois are associated with somatic cell nuclear transfer (SCNT) in cattle. Identification of diagnostic markers for abnormal placentation in early gestation would permit therapeutic intervention. Ultrasonography and transvaginal sampling of amniotic and/or allantoic (fetal) fluid enables regular monitoring of fetal health. We report on the composition of serial samples of fetal fluid from individual cows between Days 70–130 of gestation and the potential of steroid and electrolyte composition as an early diagnostic marker for the subsequent

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