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Journal articles on the topic 'Bulls – Growth'

Author: Grafiati

Published: 4 June 2021

Last updated: 9 February 2022

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1

Aktar, S., AKFH Bhuiyan, NG Saha, and MA Hoque. "Effect of bull performance on progeny early growth and genetic relationships between bull and progeny traits." Bangladesh Journal of Animal Science 40, no. 1-2 (2012): 1–7. http://dx.doi.org/10.3329/bjas.v40i1-2.10620.

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Records on four bulls and 96 of their progeny born from 2005 to 2011 with pedigree information were used to estimate the impact of bull performance on progeny early growth and the genetic relationships between traits of bull and their progeny. Traits included in this study were metabolic body weight, feed intake and residual feed intake (RFI) for bull performance and birth weight and average daily gain for progeny performance. The variance and covariance components were estimated by the REML method with the VCE computer program. The metabolic body weight of breeding bulls ranged from 92.88±1.2

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FARID, A., M. MAKARECHIAN, R. T. BERG, and M. A. PRICE. "VARIATIONS IN AND RELATIONSHIPS BETWEEN REPRODUCTIVE PERFORMANCE AND GROWTH PARAMETERS IN YEARLING BEEF BULLS IN SINGLE-SIRE MATING AT PASTURE." Canadian Journal of Animal Science 69, no. 1 (1989): 39–46. http://dx.doi.org/10.4141/cjas89-006.

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Yearling bull fertility, measured as pregnancy rate, percentage of calves born during the first 4 and 6 wk of calving and mean and median of calving date distribution, were studied in 109 single-sire breeding herds of two breed groups over a 10-yr period. The breed groups were Herefords bulls mated to purebred and crossbred Hereford cows, and Beef Synthetic bulls mated to Beef Synthetic cows. The bulls averaged 14 mo old at the start of breeding. The average bull-to-cow ratio was approximately 1:22, and the breeding season started on 1 July each year and extended for 60 d. Two out of 109 bulls

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Field, Catherine E., Maria K. Chavez, Mohammed Abo-Ismail, and Zach D. McFarlane. "PSI-31 Retrospective analysis of growth performance and carcass ultrasound data of yearling bulls enrolled at the Cal Poly Bull Test." Journal of Animal Science 98, Supplement_4 (2020): 470–71. http://dx.doi.org/10.1093/jas/skaa278.820.

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Abstract Since 1956, the Cal Poly Bull Test has evaluated performance of yearling bulls in a multi-breed contemporary group in the western United States. The main objectives of this study were to evaluate the consistency of the relationship between growth and ultrasound traits and between the number of bulls selling and sale price over a 19-year period from 2001–2019. Out of 3,712 bulls, a total of 2,503 Angus and 453 Hereford bulls were used in the analyses using SAS. Bulls were sold in the following pre-determined breed categories; Angus Heifer Bulls, Multi-Trait Angus Bulls, Growth Angus Bu

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NEWMAN, J. A., A. K. W. TONG, H. DOORNENBAL, T. TENNESSEN, G. H. COULTER, and G. J. MEARS. "EFFECTS OF ZERANOL IMPLANTATION ON GROWTH, FEED CONVERSION, TESTICULAR DEVELOPMENT AND BEHAVIORAL TRAITS OF YOUNG BULLS FED FOR SLAUGHTER." Canadian Journal of Animal Science 70, no. 4 (1990): 1005–16. http://dx.doi.org/10.4141/cjas90-124.

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An experiment was conducted to determine whether implantation with zeranol would reduce the aggressive behavior and probability of producing dark-cutting carcasses that characterize slaughter bulls. Thirty-six bull calves were allocated to each of four treatments – nonimplanted bulls, steers castrated at an average age of 101 d, bulls implanted with 36 mg zeranol at an average of 101, 170, 263 and 319 d of age and bulls implanted on the latter three dates only. The results reported include observations of weight gains, linear measurements, scrotal circumferences, serum testosterone concentrati

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CROW, G. H., S. AMAL, and M. DONETZ. "REGRESSIONS OF PROGENY PROOFS FOR CALVING EASE AND GROWTH ON TEST STATION PERFORMANCE OF CHAROLAIS AND HEREFORD BEEF BULLS." Canadian Journal of Animal Science 68, no. 1 (1988): 107–17. http://dx.doi.org/10.4141/cjas88-010.

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Performance records of 32 Charolais and 52 Hereford beef bulls tested at the Manitoba Bull Test Station for which progeny proofs were available (1984 Canadian Beef Sire Monitoring Program) were analyzed to determine if performance-tested bulls with progeny proofs were representative of the selected group of bulls which were eligible for sale (i.e, had station indexes of 95 or more) and to determine the regressions of progeny proofs on bull performance. The bull performance information included start and end of test weights, interim weights and gains, all expressed as deviations from their resp

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Thomas, Payton A., Catherine E. Field, Mohammed Abo-Ismail, and Zach D. McFarlane. "PSI-39 Retrospective analysis of semen quality attributes of bulls in the Cal Poly Bull Test." Journal of Animal Science 98, Supplement_4 (2020): 477. http://dx.doi.org/10.1093/jas/skaa278.832.

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Abstract The Cal Poly Bull Test has been offering valuable information for genetic improvement via a performance test of yearling beef bulls across the western United States since 1951. Growth and reproductive performance phenotypes were measured and collected over time. Therefore, the objective of this study was to determine the relationship between growth traits and semen quality traits. Performance records and semen samples of Hereford and Angus bulls were collected over a 12-year span from 2001–2013. A total of 1,982 records from Angus (n = 1692) and Hereford (n = 290) bulls were analyzed.

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Gorelik, O. V., S. Yu Harlap, O. P. Neverova, M. N. Sen, P. S. Galushina, and N. I. Sorokina. "Evaluating the growth of replacement heifers from different seed bulls." E3S Web of Conferences 282 (2021): 03008. http://dx.doi.org/10.1051/e3sconf/202128203008.

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In the Sverdlovsk region Holsteinized Black Pied cattle of the Ural type are bred which are represented by large, highly productive animals with a high genetic potential for productivity. Great importance is attached to the rearing replacement calves. The aim of the study was to study the dynamics of the live weight of replacement heifers from different seed bulls during rearing and its dependency on the age of the first insemination. The highest average daily weight gains were in the dairy period of heifers development, they ranged from 989 g for the daughters of the bull Thunderline to 1054

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Henley, Parker A., Giorgia Podico, Edgar Garrett, et al. "Influence of distillers grains with solubles on bull growth and reproductive traits1." Translational Animal Science 4, no. 1 (2020): 229–41. http://dx.doi.org/10.1093/tas/txz189.

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Abstract This study evaluated the effects of offering growing bulls a diet with 40% modified wet distillers grains plus solubles (MWDGS; dry matter [DM] basis) on growth, composition, hoof scores, and reproductive performance. Simmental × Angus bulls (n = 28) were stratified by body weight (BW; 316 ± 29 kg), sire, and day 0 semen production (Y/N) and assigned into one of six pens. Pens were randomly assigned to one of two dietary treatments (n = 3 pens/treatment): 1) offered free-choice access to a corn-based diet with no MWDGS (CON) or 2) offered free-choice access to a diet with 40% MWDGS (D

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9

Bergen, R., S. P. Miller, and J. W. Wilton. "Genetic correlations among indicator traits for carcass composition measured in yearling beef bulls and finished feedlot steers." Canadian Journal of Animal Science 85, no. 4 (2005): 463–73. http://dx.doi.org/10.4141/a05-013.

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Genetic correlations were examined among 10 live growth and ultrasound traits measured in yearling beef bulls (n = 2172) and four carcass traits measured in crossbred finished feedlot steers (n = 1031). Heritabilities ranged from 0.13 (bull ultrasound longissimus muscle width) to 0.83 (yearling bull hip height). Genetic correlations indicated that selecting yearling bulls for increased growth rate and hip height would lead to higher carcass weight, increased longissimus muscle area and reduced levels of carcass marbling in steers. Bull ultrasound fat depth was positively associated with both c

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Perumal, P. "Scrotal Circumference and Its Relationship with Testicular Growth, Age, and Body Weight in Tho Tho (Bos indicus) Bulls." International Scholarly Research Notices 2014 (October 29, 2014): 1–6. http://dx.doi.org/10.1155/2014/249537.

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The present study was undertaken to assess the relationship between the scrotal circumference and testicular parameters with body weight and age in Tho Tho bulls (Bos indicus), which were maintained at around the villages of National Research Centre on Mithun (ICAR), Jharnapani, Nagaland, India. A total of 32 Tho Tho bulls were selected and divided into four groups according to their age and each group consisted of 8 bulls, namely, Group I: 18–24 months (n=8), Group II: 25–36 months (n=8), Group III: 37–48 months (n=8), and Group IV: 49 months and above (n=8). The scrotal circumference and tes

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Sinclair, K. D., A. Cuthbertson, A. Rutter, and M. F. Franklin. "The effects of age at slaughter, genotype and finishing system on the organoleptic properties and texture of bull beef from suckled calves." Animal Science 66, no. 2 (1998): 329–40. http://dx.doi.org/10.1017/s1357729800009450.

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AbstractAn experiment was devised to examine the effect of animal age at slaughter, within genotype and finishing system, on bull beef eating quality characteristics to assess the 15 month age limit imposed for bulls at slaughter by the Meat and Livestock Commission specification for improved beef eating quality. The experiment was a factorial design using bulls of two crossbred genotypes (Aberdeen Angus × and Charolais ×), offered two diets (silage-based and barley-based) and slaughtered at two abattoirs. Bulls were slaughtered from approximately 10 months of age on seven dates (ages) at 6-we

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Johnson, Chinju, Carolyn Fitzsimmons, Marcos Colazo, Changxi Li, John Kastelic, and Jacob Thundathil. "Impacts of residual feed intake and pre-natal diet on reproductive potential of bulls." Animal Production Science 59, no. 10 (2019): 1827. http://dx.doi.org/10.1071/an18301.

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Our objective was to determine effects of genetic potential for residual feed intake (RFI) and pre-natal diet on post-natal growth and reproductive development of bulls. Twenty-five bull calves with a divergent potential for RFI were produced by mating purebred Angus heifers (60) categorised as high or low RFI and inseminated with semen from high or low RFI bulls. From 30 to 150 days of gestation, half the heifers (balanced for RFI across treatments) in each RFI category were fed to gain 0.7 or 0.5 kg/day (~100% and 75% of recommended feed intake; designated normal- and low-diet, respectively)

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Moran, L., M. G. O’Sullivan, J. P. Kerry, et al. "Growth paths for suckler bulls slaughtered at 19 months of age: a meat quality perspective." Advances in Animal Biosciences 8, s1 (2017): s60—s63. http://dx.doi.org/10.1017/s2040470017001728.

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This experiment aimed to assess the effect of different indoor winter growth rates (WGR) followed by different concentrate supplementation levels at pasture on meat quality of 90 bulls. During the first winter, bulls were offered grass silage ad libitum and either 3 kg (WGR3) or 6 kg (WGR6) of concentrates. After turn-out to pasture, bulls were offered: grass without supplementation (PO), grass plus 0.2 predicted dry matter intake (DMI) as concentrates (PL) or grass plus 0.4 predicted DMI as concentrates (PH). After finishing, colour, chemical composition (unaged), instrumental texture and sen

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14

Henricksi, D. M., T. Gimenez, T. W. Gettys, and B. D. Schanbacher. "Effect of castration and an anabolic implant on growth and serum hormones in cattle." Animal Science 46, no. 1 (1988): 35–41. http://dx.doi.org/10.1017/s0003356100003081.

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ABSTRACTIn the present study, a commercially available anabolic implant containing trenbolone acetate and oestradiol-17p was investigated in intact and castrated bulls. Measurements of growth rate, serum hormones and metabolites in both phenotypes, and testicular development and function in bulls, were obtained. The experimental objectives were realized in a 2 × 2 factorially designed experiment utilizing eight Angus-sired crossbred bulls and eight similar steers castrated at 7 months of age. Half of each group were implanted with 140 mg trenbolone acetate plus 28 mg oestradiol-17β. Body weigh

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MAKARECHIAN, M., A. FARID, and R. T. BERG. "SCROTAL CIRCUMFERENCE, SEMEN CHARACTERISTICS, GROWTH PARAMETERS AND THEIR RELATIONSHIPS IN YOUNG BEEF BULLS." Canadian Journal of Animal Science 65, no. 4 (1985): 789–98. http://dx.doi.org/10.4141/cjas85-094.

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The records of sixty-six yearling and 2-yr-old beef bulls selected for breeding in 1980 and 1981 were used to study the relationships between body weight (BW) and gain measurements, scrotal circumference (SC) and semen characteristics in young beef bulls. The bulls belonged to four breed groups; Hereford, Beef Synthetic, Dairy Synthetic and Pee Wee. A week before the start of breeding season, the bulls were weighed and measured for scrotal circumference. A single prebreeding semen sample was collected by electro-ejaculator from each bull in 1980, while three samples (pre-, mid- and postbreedin

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Shevkhuzhev, Anatoly Foadovich, and Vladimir Anikeevich Pogodaev. "Meat productivity of Aberdeen Angus bull calves depending on the body composition." Agrarian Scientific Journal, no. 4 (April 22, 2021): 48–52. http://dx.doi.org/10.28983/asj.y2021i4pp48-52.

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The article presents the results of studies in meat productivity of the Aberdeen Angus bull calves, depending on the constitution type. In each group, 14 bull calves were selected from the offspring of 4 large and 3 small bulls of the Aberdeen Angus breed. The first group consisted of bull calves from large and tall type of servicing bulls. The second group consisted of bull calves from small type of servicing bulls. They were put under control growing right after weaning. It was found that the bull calves from the large type of servicing bulls were superior to the bull calves from the small t

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COULTER, G. H., and D. R. C. BAILEY. "TESTICULAR DEVELOPMENT OF SALERS BULLS TO ONE YEAR OF AGE." Canadian Journal of Animal Science 68, no. 3 (1988): 961–64. http://dx.doi.org/10.4141/cjas88-106.

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Scrotal circumference measurements were taken on 255 Salers bulls located at five growth performance test stations at the 56-d (26.9 ± 0.2 cm), 84-d (28.8 ± 0.2 cm) and 140-d weighings (30.8 ± 0.2 cm) in 1986, and on 248 Salers bulls located at four test stations at the 140-d weighing (31.3 ± 0.1 cm) in 1987. The estimated scrotal circumference measurement for Salers bulls at 365 d of age was 29.4 cm. Test station, percentage of Salers breeding within test station, sire of bull within year and test station, and the covariate body weight all contributed to the variance in scrotal circumference

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Foksha, V., and A. Konstandoglo. "THE VALUATION OF IMMUNOGENETICAL DISTINCTION BETWEEN THE DESCENDANTS OF DIFFERENT BULLS." Animal Breeding and Genetics 51 (March 28, 2018): 213–24. http://dx.doi.org/10.31073/abg.51.29.

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The article presents the results of detailed genetical valuation between the descendants of different bulls in the period from 2003 till 2013. The aim of this research was to give a detailed genetic evaluation of the descendants of different bulls used in the herd of STE "Maximovca" at the relevant period of time. The object of the study was the heifers of Moldovan type of black-and-white cattle – the descendants of 11 bulls. Blood groups were determined by standard serological tests with the use of 49 monospecific sera from 9 genetic systems. All the attested livestock of breeding young

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Dymchuk, A. V., and O. I. Lyubynskyy. "THE LIVE WEIGHT GROWTH OF BULLS OF DIFFERENT BREEDS." Animal Breeding and Genetics 53 (April 27, 2017): 115–19. http://dx.doi.org/10.31073/abg.53.14.

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The studies of the dynamics results of body weight, absolute and daily average, relative increases averaging bulls of Ukrainian black-and-white and Ukrainian red-and-white dairy cattle. Researches are conducted in the conditions of POSP «Napadivske» Kalyinivka district of the Vinnytsya area after materials of primary pedigree account. In an economy use the whole-year of the same type feeding. In the structure of ration 40% make the concentrated sterns and also high-quality silage and soilage. Average daily increases of bulls for period of age to realization for a slaughter made over 1000

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Silva, Luiz H. P., Pedro V. R. Paulino, Pedro D. B. Benedeti, et al. "Post-weaning growth rate effects on body composition of Nellore bulls." Animal Production Science 60, no. 6 (2020): 852. http://dx.doi.org/10.1071/an19032.

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Context Previously feed-restricted cattle may exhibit compensatory growth during the finishing phase. However, the efficiency in converting feed into carcass should be evaluated since cattle undergoing compensatory growth usually have high non-carcass weight gain. Aims The objective of this study was to evaluate the effect of growth rate throughout the post-weaning growing phase on subsequent feed efficiency, carcass gain, and gain composition. Methods Thirty-nine weaned young Nellore bulls averaging 230.4 ± 5.62 kg of bodyweight and 8.5 ± 0.25 months of age were used. Initially, five bulls we

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BAILEY, C. B., J. E. LAWSON, and G. J. MEARS. "BLOOD COMPOSITION IN HEREFORD AND ANGUS BULLS FROM LINES SELECTED FOR RAPID GROWTH ON HIGH-ENERGY OR LOW-ENERGY DIETS." Canadian Journal of Animal Science 70, no. 1 (1990): 305–7. http://dx.doi.org/10.4141/cjas90-036.

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Angus and Hereford bull calves were obtained from lines of cattle selected for 18 yr for rapid post-weaning gain on high-energy or low-energy diets. After weaning they were given a common diet consisting of 70% barley-based concentrate and 30% roughage. Bulls whose ancestors were selected on the high-energy diet had lower levels of cholesterol and albumin in the blood than bulls whose ancestors were selected on the low-energy diet. Blood insulin, growth hormone and energy substrates were not affected by differences in the nature of the selection diets and this accords with absence of effect of

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Cappellozza, Bruno I., André C. Velasco, Cintya Tongu, Gustavo Moraes, Renato Dib, and Rafael Cervieri. "Effects of supplement amount, with or without calcium salts of fatty acids, on growth performance and intake behavior of grazing Bos indicus bulls." Translational Animal Science 4, no. 2 (2020): 799–808. http://dx.doi.org/10.1093/tas/txz190.

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Abstract: This study evaluated the effects of 2 supplement dry matter (DM) amounts, with or without calcium salts of fatty acids (CSFA), on growth performance, supplement and water intake behavior of grazing beef bulls. On day 0, 32 Nellore bulls were ranked by initial body weight (BW; 318 ± 11.2 kg), and then, randomly assigned to treatments (n = 8 bulls/treatment), in a 2 × 2 factorial design, which consisted of energy-based supplement DM amount of 0.3 (SP03) or 1.0 (SP1) % of BW with (+) or without (−) CSFA fortification (90 to 100 g/bull daily). During the experiment (98 d), all bulls were

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Petraskienė, R., N. Peciulaitienė, V. Jukna, E. Meskinytė-Kausilienė, J. Klementaviciūtė, and V. Valaitienė. "The influence of the beef bull breed on carcass weight and yield of male offspring." Biotehnologija u stocarstvu 29, no. 2 (2013): 251–57. http://dx.doi.org/10.2298/bah1302251p.

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The aim of this study was to investigate of beef breeds - Hereford (HE), Charolais (CH) Limousine (LI), Simmental (SM), Belgian Blue (BB) and Salers (SA) - of the bulls, which are used for dairy cows and heifers insemination, influence on male sex offspring carcass weight and yield. In this article, for analysis were used of all in 7 months in one slaughterhouse slaughtered bulls 12-30 months of age data. Of these 689 crossbreeds, whose cow was dairy and bull was beef breed. For this study was used only crossbreeds (689 bulls) data. This is the thirty-six (36) bull offspring from 546 farms. Bu

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Kamieniecki, H., J. Wójcik, R. Pilarczyk, et al. "Growth and carcass performance of bull calves born from Hereford, Simmental and Charolais cows sired by Charolais bulls." Czech Journal of Animal Science 54, No. 2 (2009): 47–54. http://dx.doi.org/10.17221/1669-cjas.

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The analysis comprised purebred Charolais bull calves (CH) and crossbred bull calves born from Hereford (CH × HE) and Simmental (CH × SI) cows. Body weights and daily gains were measured in subsequent periods of the experiment and the post-slaughter evaluation was carried out. Carcass lean weight and dressing percentage were evaluated, as well as the lean content of five prime cuts. Total weight of the five prime cuts was measured and its share in the half-carcass weight was determined. The rib-eye area was also measured. The CH × SI crossbreds reached significantly higher body weights at wean

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Shakhmurzov, Mukhamed, Anatoly Shevkhuzhev, Vladimir Pogodaev, Vladimir Gukezhev, and Vitaly Vorokov. "Growth and development indices of Aberdeen-Angus bulls originating from sires of different body types." E3S Web of Conferences 262 (2021): 02024. http://dx.doi.org/10.1051/e3sconf/202126202024.

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The purpose of this work was to establish the characteristics of growth, exterior, payment for feed by gain in live weight among young Aberdeen-Angus breed, originating from bulls of different body types. Hammer LLC of Karachay-Cherkessia conducted the experiment: from the offspring of 4 large bulls and 3 small bulls of the Aberdeen-Angus breed, 14 bulls were selected in each group. The investigation results on the intensive rearing of different young stock from weaning to 18 months of age showed that large-type bulls were superior to small-type bulls in terms of growth rate and better payment

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Inerbaev, B. O., A. S. Durov, I. A. Khramtsova, N. V. Borisov, and A. I. Rykov. "THE EFFECT OF SEASON OF BIRTH ON LIVE WEIGHT HEREFORD STEERS." Innovations and Food Safety, no. 4 (December 28, 2018): 74–80. http://dx.doi.org/10.31677/2311-0651-2018-0-4-74-80.

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The aim of the research is to study the influence of different seasons of birth on the productivity of Hereford bulls for the implementation of various technological solutions. The object of the study were Hereford bulls from birth to 16 months of age in LLC «Andrianovsky» of the Republic of Khakassia. By pairing custom-made 100 cows with the bull in 2015-2016 was obtained 53 bull. Of these, 2 groups of 20 bulls were formulated for control cultivation: 1st-animals born from January to April, and 2nd - from October to December. Assessment of the dynamics of live weight of test bulls of both gro

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Toušová, Renáta, Jaromír Ducháček, Matúš Gašparík, Martin Ptáček, and Lubor Kitzler. "Analysis of Growth Intensity and Carcass Characteristics of Wagyu‑Aberdeen Angus Crossbred Steers." Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis 66, no. 4 (2018): 897–903. http://dx.doi.org/10.11118/actaun201866040897.

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The aim of this study was to evaluate growth ability (weight, daily weight gains) and selected carcass characteristics during fattening period of Wagyu × Aberdeen Angus crossbred steers (F1). A total of 72 animals were evaluated over a period of 4 years. The observed animals were monitored from rearing (8 months) to slaughter (30 months). Statistical evaluation was performed by SAS 9.3 (GLM procedure); variables were corrected for effects of the year, season of birth and sire effect. Sire effect proved to be the most significant in our evaluation. Offsprings sired by Bull 1 had significantly (

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Bureš, D., and L. Bartoň. " Growth performance, carcass traits and meat quality of bulls and heifers slaughtered at different ages." Czech Journal of Animal Science 57, No. 1 (2012): 34–43. http://dx.doi.org/10.17221/5482-cjas.

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The effects of sex and slaughter age on growth, feed intake, carcass composition and meat quality attributes of musculus longissimus lumborum were investigated in Charolais &times; Simmental bulls (n = 12) and heifers (n = 12) reared and finished under identical management conditions. The animals entered the experiment at similar age (251 days) and were slaughtered at 14 or 18 months of age. Bulls gained more rapidly (P &nbsp;&lt; 0.001), consumed more dry matter daily (P &lt; 0.05), and had a higher killing-out proportion (P&nbsp;&lt;&nbsp;0.05). The sex &times

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Levi, M., K. E. Dittmer, A. Gentile, et al. "Growth Plate Lesions of Fattening Bulls." Veterinary Pathology 54, no. 3 (2016): 437–44. http://dx.doi.org/10.1177/0300985816684915.

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Mounier, L., S. Colson, M. Roux, et al. "Links between specialization in the finishing of bulls, mixing, farmers' attitudes towards animals and the production of finishing bulls: a survey on French farms." Animal Science 82, no. 4 (2006): 561–68. http://dx.doi.org/10.1079/asc200652.

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AbstractIn France, beef bulls are finished by breeder-finishers who produce calves and then fatten them, or by specialized finishers who fatten bulls that they buy. According to previous results on both dairy cows and pigs, breeding on the farm promotes positive attitudes of farmers towards animals, which can lead to improved animal health and growth. The mixing of bulls on their arrival at a specialized unit could stress them and thus impair health and growth. We hypothesized that breeder-finishers have more positive attitudes towards bulls and their work with bulls than specialized finishers

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SHEVKHUZHEV, A. F., and V. A. POGODAEV. "FEATURES OF THE GROWTH DYNAMICS, EXTERIOR, AND FEED PAYMENT OF ABERDEEN-ANGUS CALVES OF DIFFERENT BODY TYPES." Izvestiâ Timirâzevskoj selʹskohozâjstvennoj akademii, no. 2 (2021): 49–59. http://dx.doi.org/10.26897/0021-342x-2021-2-49-59.

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The purpose of this work was to establish the features of growth, appearance, and feed costs as related to the increase in live weight in Aberdeen-Angus calves obtained from bulls of different body types. To conduct the experiment in the company LLC “Hammer” of the Karachay-Cherkess Republic, 14 calf bulls were selected in each group from the offspring of 4 large calf bulls and 3 small calf bulls of the Aberdeen-Angus breed. The fathers of the first group of young calf bulls had a higher level of live weight as compared to the fathers of the second group of calf bulls (by 80 kg). Their differe

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Jago, J. G., L. R. Matthews, T. E. Trigg, P. Dobbie, and J. J. Bass. "The effect of immunocastration 7 weeks before slaughter on the behaviour, growth and meat quality of post-pubertal bulls." Animal Science 68, no. 1 (1999): 163–71. http://dx.doi.org/10.1017/s1357729800050189.

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AbstractActive immunization against gonadotropin-releasing hormone (GnRH), commonly known as immunocastration, has been proposed as an alternative to traditional methods of castrating bulls. This study evaluated the effects of immunocastration on growth, behaviour and meat quality of post-pubertal bulls. Bulls were either vaccinated against GnRH (no. = 30, I) or left intact (no. = 30, B). A third treatment consisted of steers (no. = 20, S) that had been castrated pre-pubertally. The animals were run in eight single treatment groups (no. = 10 per group), three of each of В and I and two groups

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Grantley-Smith, M. P., J. R. Southgate, D. W. Jones, A. R. Peters та M. Dobson. "The effect of oestradiol 17β on liveweight gain and carcass composition of intensively reared cereal beef bulls". Proceedings of the British Society of Animal Production (1972) 1986 (березень 1986): 92. http://dx.doi.org/10.1017/s0308229600016019.

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Oestradiol 17β (Compudose-365 ) is widely used as a growth promoter in steers and the daily gain response is well known. However, for bull beef production the efficiency of the hormone implant is not so well researched, particularly in Great Britain, where there is not yet a product licence for use in bulls. Work in the U.S.A. has shown that Oestradiol 17β implants in bulls stimulate daily gain and improve carcass shape, but at the same time increasing subcutaneous fat levels (Johnson et al, 1984). The trial described here was designed to study the effect of Oestradiol 17β under a range of far

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Nikolić, Judith Anna, Olgica Nedić, H. Šamanc, S. Aleksić, B. Miščević, and Margit Kulcsár. "Peripheral circulating insulin-like growth factor-I and -II in cattle." Acta Veterinaria Hungarica 49, no. 1 (2001): 53–63. http://dx.doi.org/10.1556/004.49.2001.1.7.

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Interrelationships between circulating concentrations of the insulin-like growth factors (IGF-I and IGF-II) were investigated in 235 blood samples taken from 145 healthy beef or dairy calves, bulls and cows of different breeds and ages. Autoradiography of Western ligand blots indicated different IGF binding protein (IGFBP) profiles between sera from different categories of cattle. Each IGF radioimmunoassay was validated by determining the effects of IGFBPs, ligand and contraligand, as well as serial dilution and comparison with results obtained after molecular sieve chromatography in acid. In

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Ronge, H., and J. Blum. "Insulin-like growth factor I during growth in bulls." Reproduction Nutrition Développement 29, no. 1 (1989): 105–11. http://dx.doi.org/10.1051/rnd:19890109.

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Islam, S., MA Hoque, MAMY Khandoker, NG Saha, and A. Akhtar. "Estimation of effect of breeding bulls and genetic parameters on early growth performance of calves at farm and field levels." Bangladesh Journal of Animal Science 42, no. 2 (2013): 81–88. http://dx.doi.org/10.3329/bjas.v42i2.18484.

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The present study was conducted using records on four breeding bulls maintained at the Artificial Insemination (AI) Center of Bangladesh Agricultural University (BAU), Mymensingh and on 154 of their progeny maintained at BAU Dairy Farm (112) and some villages (42 progeny) adjacent to BAU for estimating the effect of breeding bulls and genetic parameters on early growth performance of the progeny at farm and field levels. Genetic correlations between traits of bulls and their progeny were also estimated. Bull traits were metabolic body weight (MWT), feed intake (FI) and residual feed intake (RF

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Fisher, A. V., J. D. Wood, and O. P. Whelehan. "The effects of a combined androgenic-oestrogenic anabolic agent in steers and bulls 1. Growth and carcass composition." Animal Science 42, no. 2 (1986): 203–11. http://dx.doi.org/10.1017/s0003356100017918.

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ABSTRACTTwenty-one pairs of male cattle twins, 10 of which were monozygotic, were used in a study of the effects of a combined implant of trenbolone acetate (140 mg) and oestradiol-17B (20 mg) on growth and carcass composition. There were three comparisons within pairs: (1) between bulls and steers (no implants); (2) between bulls and implanted steers; and (3) between bulls and implanted bulls.Implants were given twice, at 44 to 73 days and at 300 days of age. Animals were slaughtered at 400 days following recorded consumption of a complete pelleted diet given ad libitum. Carcasses were separa

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Přibyl, J., H. Krejčová, J. Přibylova, I. Misztal, S. Tsuruta, and N. Mielenz. "Models for evaluation of growth of performance tested bulls." Czech Journal of Animal Science 53, No. 2 (2008): 45–54. http://dx.doi.org/10.17221/331-cjas.

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Before being used for insemination, young bulls of Czech Fleckvieh (CF) are tested for growth at performance-test stations. While at stations, the bulls are weighed monthly. Evaluation included 7 448 bulls with 82 676 records of weight measured from 6 to 520 days of life. In the station-year-period (HYS), which can be prolonged up to 3 months, different groups were tested according to the beginning of growth curve and according to test-days of weighing. Weight analyses were used to handle heterogeneous variability based on age. Legendre Polynomials (LP) with 5 parameters described the average

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Štercová, E., A. Krása, R. Lepková, and J. Šterc. "The evaluation of growth and selected carcass and meat quality parameters in fattening bulls fed a diet based on concentrates or maize silage." Czech Journal of Animal Science 53, No. 9 (2008): 368–76. http://dx.doi.org/10.17221/334-cjas.

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The aim of the study was to evaluate the growth rate and selected carcass and meat quality parameters in bulls fed a high-grain diet and to compare the results with those obtained in bulls fed a diet based on preserved roughage. The trial included 18 Czech-Pied bulls fed a diet with a high proportion of concentrated feed and 18 Czech-Pied bulls fed a diet based on maize silage, used as a control group. The trial was launched after the weaning of calves. During the fattening period, live weight and average daily weight gain were monitored. The bulls were slaughtered at the live weight of 550–60

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Dzhus, P. P., O. V. Sydorenko, O. V. Bilous, R. G. Pashyan, R. F. Katsevych, and O. V. Martynyuk. "ASSESSMENT OF BULLS ON THEIR OWN PERFORMANCE AS A PART OF IMPROVING DOMESTIC POPULATION ABERDEEN-ANGUS BREED OF CATTLE." Animal Breeding and Genetics 52 (November 1, 2016): 17–22. http://dx.doi.org/10.31073/abg.52.03.

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Introduction. Aberdeen-Angus breed, selection achievement of United Kingdom, long time ago ceased to be merely a cultural heritage and became a global transcontinental obtainment in beef cattle breeding. Productive "attractiveness" of Aberdeen-Angus breed makes it a popular genetic resource in the cattle branch production. It causes the optimistic results of the statistical analysis of farm animal biodiversity for data of European EFABIS data base, according which the status of this breed can be defined as "not at risk". Ukrainian population of Aberdeen-Angus formed in 1961 by importing

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Hornick, J. L., C. Van Eenaeme, S. Gauthier, P. Baldwin, and L. Istasse. "Glucose, alpha-amino nitrogen, and amino acid exchange across the hindlimb in young double-muscled type bulls maintained at two growth rates." Canadian Journal of Animal Science 76, no. 2 (1996): 193–202. http://dx.doi.org/10.4141/cjas96-030.

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The effect of growth rate and protein supplementation on muscle metabolism of eight bulls from the Belgian Blue breed, double-muscled type, was investigated by the arterio-venous difference technique. A low growth (LG) group was maintained at a low growth rate over 36 d, and a rapid growth (RG) group for 28 d before receiving a fattening diet allowing for a rapid growth. At the end of the RG period the RG bulls received a supplement of protected soybean meal. Animals were fitted with an aortic ultrasonic blood flow probe and with catheters in the aorta and the vena cava. The blood flow in the

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Proctor, Jarret A., Nathan S. Long, Connor K. Biehler, et al. "191 Effects of feeding strategy on growth performance and semen quality of developing bulls." Journal of Animal Science 97, Supplement_3 (2019): 26. http://dx.doi.org/10.1093/jas/skz258.050.

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Abstract The use of high-energy diets to develop bulls is perceived to influence semen quality, yet little research has been conducted using iso-caloric diets that differ in form or feeding management strategy. Therefore, the objective of this experiment was to evaluate the effects of two feeding strategies on growth performance and semen quality of developing bulls. Angus bulls (n = 48; 332 ± 47 d of age) were stratified into one of sixteen drylot pens before pens were randomly assigned to one of two iso-caloric diets: a total mixed ration (TMR; n = 8 pens) or a component-based ration (COMP;

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COULTER, G. H., G. C. KOZUB, D. R. C. BAILEY, R. J. MAPLETOFT, and W. F. CATES. "HERITABILITY OF SCROTAL CIRCUMFERENCE IN ONE- AND TWO-YEAR-OLD BULLS OF DIFFERENT BEEF BREEDS." Canadian Journal of Animal Science 67, no. 3 (1987): 645–51. http://dx.doi.org/10.4141/cjas87-068.

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Over an 8-yr interval, (1975–1982) scrotal circumference (SC) was measured on 4557 1-yr-old beef bulls from 1796 sires and eight breeds. Measurements were taken upon completion of a 140-d growth performance test. During the period 1977–1983, SC was measured on 7835 2-yr-old beef bulls from 2570 sires and six breeds. Two-year-old bulls were measured during reproductive examinations at spring bull sales. All SC measurements were adjusted for fixed effects of location-year and age, and heritability estimates were calculated within-breed using a paternal half-sib analysis. Heritability estimates f

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Młynek, Krzysztof, Oler Adam, and Beata Głowińska. "Effect of Commercial Crossbreeding and Growth Intensity on Slaughter Indicators, Microstructure and The Quality Characteristics of Biceps Brachii Muscle in Bulls." Annals of Animal Science 14, no. 3 (2014): 673–83. http://dx.doi.org/10.2478/aoas-2014-0024.

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AbstractThe commercial crossbreds with various genotypes and different growth rates in terms of the fattening and slaughter value as well as the microstructure and the quality characteristics of musculus biceps brachii were investigated. The experiment involved 38 bulls: 20 crossbreds obtained from Polish Black-and-White Lowland dams (BW) sired by Limousin bulls (LIM) – group I, and 18 crossbreds obtained from BW cows and Simmental bulls (SIM) – group II. The animals of both groups were divided into low growth rate (LG I and LG II; daily weight gain ≤900 g/day) and high growth rate category (H

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DINKEL, C. A. "THE INTERACTION OF COW SIZE WITH GROWTH POTENTIAL OF THE SERVICE SIRE." Canadian Journal of Animal Science 68, no. 1 (1988): 129–37. http://dx.doi.org/10.4141/cjas88-012.

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Weaning weight and individual feed records for 343 calves produced by 84 cows during an 8-yr period were utilized to evaluate the effects of high- and low-growth-potential sires on the efficiency of large and small cows. Cow efficiency was expressed as a ratio of cows' and calves' TDN consumption for a year divided by the weaning weight of the calf. The design allowed the mating of small and large cows of each of four breed groups to unrelated low- and high-growth-potential bulls. The effects of cow size on cow efficiency were further evaluated by omitting cow size group and the interaction of

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Wu, Jianping, Yan Bai, Xia Lang, et al. "202 Dietary supplementation with a blend of essential oils and a proprietary cobalt source along monensin may be antagonistic to growth performance of Holstein yearling bulls." Journal of Animal Science 98, Supplement_4 (2020): 148. http://dx.doi.org/10.1093/jas/skaa278.270.

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Abstract Our previous work has indicated that feeding a blend of essential oils and a proprietary cobalt source (EOC) in combination with monensin (MON) may not be mutually beneficial to dairy calf growth performance. To evaluate this observation further, a 240 d long-term growth experiment was conducted using 12 young growing Holstein bulls using a 2 × 2 factorial treatment arrangement. Main factors were EOC (Rum-A-Fresh, Ralco, Inc., Marshall, MN) and monensin (MON; Norvikon Biotechnology Co., Hunan, China) arranged in 4 treatments: 1) Control: ration fed without EOC or MON; 2) EOC: EOC fed

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BAILEY, C. B., and J. E. LAWSON. "RATE AND EFFICIENCY OF GAIN IN HEREFORD AND ANGUS BULLS FROM LINES SELECTED FOR RAPID GROWTH ON HIGH-ENERGY AND LOW-ENERGY DIETS." Canadian Journal of Animal Science 69, no. 1 (1989): 161–72. http://dx.doi.org/10.4141/cjas89-019.

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Hereford and Angus bull calves were obtained from lines selected for an average of 18 yr for rapid growth on a high-energy diet (concentrate) or a low-energy diet (forage). They were given a typical feedlot diet (70% concentrate and 30% forage) in amounts about equal to 95% of the ad libitum intake and were slaughtered at a liveweight of 500 kg. Effects of breed, or of the selection diet given to the antecedents of the bulls, on rate and efficiency of gain of empty body, carcass, fat, protein, and energy were measured. Selection diet had no effect on rate or energetic efficiency of gain of the

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Maylinda, S., and W. Busono. "Growth hormone locus polymorphism in Ongole Grade and Fries Holland Grade bulls and its implications in the digestibility of feed." Journal of the Indonesian Tropical Animal Agriculture 45, no. 2 (2020): 71–77. http://dx.doi.org/10.14710/jitaa.45.2.71-77.

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This research aimed to analyze polymorphism of the growth hormone (GH) gene and its implication on digestibility of low and high quality feed. Forty bulls Ongole Grade (OG) and 30 bulls Fries Holland Grade (FHG) had been selected and subjected for an experiment to measure body weight gain, dry matter intake, feed efficiency and feed digestibility. The treatment was crude fibrous feed from various plants with a fibre weight of 15% (P1: low quality) and 22.5% (P2: high quality). The 389 bp of GH gene was amplified (F = 5'-CCCACGGGAGAGAATGAGGC–3'; dan R = 5'-TGAGGAACTGCAGGGGGPA-3') and digested u

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Doren, P. E., J. F. Baker, C. R. Long, and T. C. Cartwright. "Estimating Parameters of Growth Curves of Bulls." Journal of Animal Science 67, no. 6 (1989): 1432. http://dx.doi.org/10.2527/jas1989.6761432x.

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Costa e Silva, Luiz Fernando, Sebastião de Campos Valadares Filho, Edenio Detmann, et al. "Performance, growth, and maturity of Nellore bulls." Tropical Animal Health and Production 45, no. 3 (2012): 795–803. http://dx.doi.org/10.1007/s11250-012-0291-1.

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