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Impacts of stocking density on development and puberty attainment of replacement beef heifers
(2017-12-01)
In all, 60 Angus×Hereford heifers were ranked by age and BW (210±2 days and 220±2 kg) on day 0, and assigned to: (a) one of three drylot pens (10×14 m pens; 10 heifers/pen) resulting in a stocking density of 14 m2/heifer ...
Impacts of postweaning growth rate of replacement beef heifers on their reproductive development and productivity as primiparous cows
(2019-10-03)
This experiment evaluated the effects of postweaning body weight (BW) gain of replacement beef heifers on their reproductive development and productivity as primiparous cows. Seventy-Two Angus × Hereford heifers were ranked ...
Performance strategies affect mammary gland development in prepubertal heifers
(Journal of Dairy Science, 2019)
Effects of temperament on growth, plasma cortisol concentrations and puberty attainment in Nelore beef heifers
(2019-06-01)
Excitable temperament disrupts physiological events required for reproductive development in cattle, but no research has investigated the impacts of temperament on growth and puberty attainment in Bos indicus females. ...
Effect of forage species and supplement type on rumen kinetics and serum metabolites in growing beef heifers grazing winter forage
(2017-12-01)
The objective of this study was to determine the effect of stockpiled forage type and protein supplementation on VFA production, serum metabolites, and BW in yearling beef heifers. Over 2 yr, spring-born, Angus crossbred ...
Reproductive tract development and puberty in two lines of Nellore heifers selected for postweaning weight
(2013-07-01)
The objective was to evaluate reproductive tract development (ovary and uterus) and onset of puberty in two lines of Nellore heifers (Bos indicus) selected for postweaning weight. A total of 123 heifers, including 46 from ...
Reproductive tract development and puberty in two lines of Nellore heifers selected for postweaning weight
(2013-07-01)
The objective was to evaluate reproductive tract development (ovary and uterus) and onset of puberty in two lines of Nellore heifers (Bos indicus) selected for postweaning weight. A total of 123 heifers, including 46 from ...
Effect of forage species and supplement type on rumen kinetics and serum metabolites in developing beef heifers grazing winter forage.
(Amer Soc Animal Science, 2017-08-01)
Expression of androgen-producing enzyme genes and testosterone concentration in Angus and Nellore heifers with high and low ovarian follicle count
(2015-08-03)
Follicle population is important when animals are used in assisted reproductive programs. Bos indicus animals have more follicles per follicular wave than Bos taurus animals. On the other hand, B taurus animals present ...