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AbstractFull Text

Birth weight plays an important role for its relationship with adult size and ease of calf delivery; while weaning weight, together with the weaning percentage, determines the kilograms of calf produced annually. Both variables are affected by environmental effects such as year of birth, mother's...

Author(s)
Holgado, F.; Ortega, M. F.; Cantarella, G.
Publisher
Red CONBIAND, Córdoba, Spain
Citation
Actas Iberoamericanas de Conservación Animal, 2019, 14, pp 64-68
Abstract

The ability to positively alter immune and stress response with nutritional compounds is of great interest and importance to the beef industry. There is a proprietary product (OmniGen-AF [OG]; Phibro Animal Health, Quincy, IL) reported to have performance-enhancing benefits by altering animal...

Author(s)
Crook, T. S.; Beck, P. A.; Gadberry, S.; Sims, M. B.; Stewart, B. C.; Shelton, C.; Koltes, J.; Kegley, E. B.; Powell, J.; McLean, D. J.; Chapman, J. D.
Publisher
Oxford University Press, Cary, USA
Citation
Journal of Animal Science, 2020, 98, 3,
Abstract

The objectives of this study were to quantitatively summarize factors associated with cow milk yield (MY) and calf growth response in pasture-based beef cow-calf suckler systems and to discern how cow genotype and parity influenced these responses. A dataset of 344 treatment mean observations was...

Author(s)
Sapkota, D.; Kelly, A. K.; Crosson, P.; White, R. R.; McGee, M.
Publisher
Elsevier B.V., Amsterdam, Netherlands
Citation
Livestock Science, 2020, 241,
Abstract

Objectives were to determine the interaction of prepartum supplement level and age at weaning on cow BW, BCS, milk production, reproduction, and calf performance up to weaning in a fall-calving system over 2 yr. Mature, multiparous, Angus × Simmental cows (yr 1: 326 cows, 9 pastures, BW=632±67 kg,...

Author(s)
Shoup, L. M.; Kloth, A. C.; Wilson, T. B.; González-Peña, D.; Ireland, F. A.; Rodriguez-Zas, S.; Felix, T. L.; Shike, D. W.
Publisher
American Society of Animal Science, Savoy, USA
Citation
Journal of Animal Science, 2015, 93, 10, pp 4926-4935
Abstract

A 4-yr experiment examined how weaning date and prepartum nutrition affected productivity in a spring (March and April) calving system. Crossbred beef cows (479±59 kg, n=144) were used in a completely randomized design with a 2×4 factorial treatment arrangement: (1) cows were weaned in early...

Author(s)
Luebbe, K. M.; Stalker, L. A.; Klopfenstein, T. J.; Funston, R. N.
Publisher
Oxford University Press, Oxford, UK
Citation
Translational Animal Science, 2019, 3, 4, pp 1492-1501
Abstract

This study evaluated reproductive, maternal performance, and longevity traits of 143 F1 cows sired by Brahman (Br), Boran (Bo), or Tuli (T) bulls from Angus or Hereford cows from 1994 to 2011. Cow traits were measured at 7 yr of age in 1999 and 2000 for 1992- and 1993-born cows, respectively. From...

Author(s)
Muntean, C. T.; Herring, A. D.; Riley, D. G.; Gill, C. A.; Sawyer, J. E.; Sanders, J. O.
Publisher
Oxford University Press, Cary, USA
Citation
Journal of Animal Science, 2018, 96, 7, pp 2545-2552
Abstract

Early weaning is used to minimize cow nutrient requirements in situations where feed inputs are scarce or expensive. For many years, maintenance energy requirements have been assumed to be 20% greater in lactating compared with non-lactating beef cows. While not well established, maintenance energy ...

Author(s)
Wiseman, A.; Redden, M.; McGee, A.; Spencer, C.; Reuter, R.; Horn, G.; Lalman, D.
Publisher
Oxford University Press, Cary, USA
Citation
Journal of Animal Science, 2019, 97, 3, pp 1198-1211
Abstract

The objective of this study was to characterize the trend over time for weaning BW in commercial cow-calf operations in the US beef cattle industry. The first data set contained weaning BW data from 4 enterprise analysis programs from 1991 to 2015. The second data set included mean forecasted...

Author(s)
Lalman, D. L.; Andresen, C. E.; Goad, C. L.; Kriese-Anderson, L.; King, M. E.; Odde, K. G.
Publisher
Elsevier, New York, USA
Citation
Applied Animal Science, 2019, 35, 1, pp 57-65
Abstract

Development of calves depends on prenatal and postnatal conditions. Primiparous cows were still maturing during pregnancy, which can lead to negative intrauterine conditions and affect the calf's metabolism. It is hypothesized that weaning calves at higher maturity has positive effects due to...

Author(s)
Schwarzkopf, S.; Kinoshita, A.; Kluess, J.; Kersten, S.; Meyer, U.; Huber, K.; Dänicke, S.; Frahm, J.
Publisher
MDPI AG, Basel, Switzerland
Citation
Animals, 2019, 9, 12, pp 1132
AbstractFull Text

The study aimed to evaluate the productive efficiency of cow at weaning according to their size (weight) and estimated phenotypic correlation between the characteristics of weaning weight of calf and cow and weaning ratio of Nellore cattle raised in the Pantanal of Mato Grosso do Sul. 706...

Author(s)
Silva, R. M.; Souza, J. C.; Fernandes, H. J.; Abreu, U. G. P.; Ferraz Filho, P. B.; Rosa, A. N.
Publisher
FEPMVZ - Editora, Belo Horizonte, Brazil
Citation
Arquivo Brasileiro de Medicina Veterinária e Zootecnia, 2015, 67, 4, pp 1105-1110

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