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Effects of body condition score at initiation of the breeding season on reproductive performance and overall productivity of Bos taurus and B. indicus beef cows
(2021-09-01)
This experiment was conducted to evaluate reproductive and productive responses of Bos indicus and B. taurus beef cows according to body condition score (BCS) at initiation of the annual breeding season. Non-pregnant, ...
Evaluation of presynchronization and addition of GnRH at the beginning of an estradiol/progesterone protocol on circulating progesterone and fertility of lactating dairy cows
(2020-04-15)
The objectives of this study were to determine if the utilization of a presynchronization strategy would improve fertility at first artificial insemination (AI) during an E2/P4 ovulation synchronization protocol with or ...
Comportamento ingestivo e produtividade de vacas das raças Jersey e Holandesa em pastagens de azevém anual
(Universidade Federal de Santa MariaBRZootecniaUFSMPrograma de Pós-Graduação em Zootecnia, 2011-12-02)
A trial was conducted to evaluate the ingestive behavior, pastures dynamics and productivity
of cows of the Jersey and Holstein s breeds grazing annual-ryegrass (Lolium multiflorum) in
northwestern Rio Grande do Sul. ...
Milk fat composition of Holstein and Jersey cows with control or depleted copper status and fed whole soybeans or tallow
(American Dairy Science Association, 2000)
We studied effects of breed, dietary fat source, and dietary copper intake as factors known to influence unsaturation of milk fat and its potential for development of spontaneous oxidized flavor in milk. Twelve Holstein ...
Effects of temperament on physiological, productive, and reproductive responses in Bos indicus beef cows
(Amer Soc Animal Science, 2017-01-01)
This experiment evaluated the effects of temperament on physiological, productive, and reproductive responses in Bos indicus beef cows. A total of 953 lactating, multiparous, non-pregnant Nelore cows (age = 99 +/- 2 mo; ...
Risks associated to different methods of increasing pregnancy rate of cows in cow-calf systems
(Brazilian Journal of Animal Science, 2023)
Progesterone-based estrous synchronization protocols in non-suckled and suckled primiparous Bos indicus beef cows
(Elsevier B.V., 2010-05-01)
In Experiment 1, effects of an intravaginal progesterone insert (CIDR) for synchronization of estrus in non-suckled cycling primiparous Bos indicus beef cows were evaluated. Cows received either no treatment (Control), ...