Sheep Estrus
Mostrando 1-12 de 17 artigos, teses e dissertações.
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1. Effects of long-term controlled internal drug release reuse on reproductive performance, hormone profiles, and economic profit of sheep
ABSTRACT Fifty-seven multiparous Awassi ewes in the breeding season were used to compare the effects of controlled internal drug release (CIDR) reuse on hormone profiles, reproductive performance, and economic production. Ewes were randomly allotted to one of three CIDR treatments: new (control), once-used, and twice-used; treatment lasted 12 days. Blood sam
R. Bras. Zootec.. Publicado em: 28/11/2019
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2. Technical recommendations for artificial insemination in sheep
Abstract Artificial insemination (AI) was the first important biotechnology applied to improve the genetics of farm animals. It allows the rapid and massive diffusion of desirable characteristics of males with high productive potential. We describe the different types of estrus induction and synchronization techniques and the use of the AI with fresh, chille
Anim. Reprod.. Publicado em: 25/11/2019
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3. Vitrified embryo transfer in Merino sheep under extensive conditions
Abstract The aim was to evaluate pregnancy success after transfer of embryos vitrified in micropipette tips in Merino sheep under extensive conditions. A second objective was to evaluate the influence of embryo stage in such pregnancy rate. One hundred and twenty-seven embryos were rewarmed and transferred into recipient ewes. On rewarming, the embryos were
Anim. Reprod.. Publicado em: 25/11/2019
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4. Produção, composição do leite e desempenho reprodutivo de ovelhas Santa Inês alimentadas com rações contendo óleo de canola ou linhaça / Milk yield, milk composition and reproductive performance of Santa Inês ewes fed diets containing canola or linseed oil
The objective in this study was to evaluate the effect of the addition of canola oil (CO) or linseed oil (LO) on milk production and composition and reproductive performance of Santa Inês ewes. In the experiment I, 33 Santa Inês ewes were fed diets containing 50% of roughage (Cynodon dactylon hay). Experimental diets included a control (no oil) and two rem
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 23/04/2012
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5. Comportamento reprodutivo caprino e ovino com o uso do efeito macho interespÃcie / Goat and sheep breeding behavior using the male effect interspecies
This study was carried out to observe the sexual behavior of individuals (male sheep, goats and female goats) during their interaction effect of male and interspecies-sexual partner for the development of a behavioral ethogram. For that, the frequency of behavioral activities during the course of the male effect was observed, both by the ram (interspecies) a
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 10/06/2011
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6. Inseminação artificial em ovinos.
ABSTRACT: The aim of this review is to show and illustrate an way clear and objective of the aspects involved in the artificial insemination in sheep. In this species the potential is great, therefore it is early in its productive and reproductive aspects, with eminence to the short interval between generations. In the program of artificial insemination (AI)
Planaltina. Publicado em: 2011
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7. Utilização de subproduto de caju (Anacardium occidentale) no desempenho reprodutivo e produtivo de ovinos criados no Nordeste do Brasil. / Use of a byproduct of cashew (Anacardium occidentale) in reproductive and productive performance of sheep raised in Northeast Brazil.
The objectives were: 1) assess the reproductive responses of ewes fed increasing levels of dehydrated cashew apple pomace (25, 50 and 75%-BCD) during the mating period, 2) check the return to cyclicity in sheep fed postpartum period prescribed in the diet include BCD, 3) assess body development and puberty age of lambs fed 50% inclusion of BCD diet, and 4) t
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 22/07/2010
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8. Protocolos de sincronização da ovulação para inseminação artificial com tempo fixo em ovelhas / Protocol synchronization of estrus and ovulation in sheep
The aim of study was to test the hormonal protocol for FTAI (fixed timed artificial insemination) with progesterone for 6 days applying eCG (Equine Corionic Gonadotrophin) or BE (Estradiol Benzoate) and induction of estrus using: MAP (acetato de medroxiprogesterone) for 6, 9 and 14 days or a single dose of PGF2a or male effect. Experiment 1: In D0 each ewe (
Publicado em: 2009
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9. Efeito de um protocolo hormonal a base de progestágeno e eCG sobre o desempenho reprodutivo de ovelhas mestiças durante o período de contraestação reprodutiva
O objetivo deste trabalho foi avaliar o desempenho reprodutivo de ovelhas mestiças lanadas e deslanadas submetidas a um protocolo hormonal a base de progestágeno, durante a contraestação reprodutiva. No primeiro experimento, 48 ovelhas mestiças, sem raça definida, com escore de condição corporal médio 3,2 ± 0,5 e peso vivo médio 41 ± 2 kg foram d
Publicado em: 2009
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10. Utilização do Eazi-Breed CIDR, novo e reutilizado, em protocolos longos e curtos para sincronização do estro e da ovulação em ovelhas / Use of Eazi-Breed CIDR new and re-used in long and short protocols for synchronization of estrus and ovulation in sheep.
Foram conduzidos dois experimentos para avaliar a utilização do Eazi-Breed CIDR novo e reutilizado em protocolos longos e curtos na sincronização do estro e da ovulação em ovelhas. No primeiro estudo avaliou-se o desempenho reprodutivo de ovelhas em programa de inseminação artificial em tempo fixo com protocolo curto (cinco dias) e longo (doze dias)
Publicado em: 2009
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11. Sincronização de estro com prostaglandina F2 versus progesterona associada à gonadotrofina coriônica eqüina (eCG) em ovelhas deslanadas no Distrito Federal
The aim of this study was to compare two protocols of estrus synchronization in Santa Inês ewes. Thirty-eight ewes were randomly divided into two groups and treated with two protocols of estrus synchronization: protocol PGF2a (two doses of 0.530 mg of PGF2a, nine days apart) and protocol P4+eCG (intravaginal sponge impregnated with medroxyprogesterone aceta
Publicado em: 2008
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12. EARLY LUTEAL FUNCTION IN EWES SUBMITTED OF PNEUMOPERITONEUM DURING ESTRUS / FUNÇÃO LUTEAL INICIAL EM OVELHAS SUBMETIDAS A PNEUMOPERITÔNIO DURANTE O ESTRO
Ewes submitted to artificial insemination by laparoscopy have an increase in serum cortisol levels. Pain induced by pneumoperitoneum appears to be the cause of such increase and may be related to the low conception rates of the technique. The objective of this study was to investigate progesterone levels in ewes following pneumoperitoneum during estrus. One
Publicado em: 2008