Estrus Detection
Mostrando 1-12 de 32 artigos, teses e dissertações.
-
1. In vitro sperm characteristics and in vivo fertility of sex-sorted and conventional semen in suckled Nelore cows at a traditional schedule for timed-AI with estrus detection
RESUMO O estudo teve como objetivo avaliar características espermáticas in vitro e a taxa de concepção (TC) de sêmen convencional e sexado em um programa de IATF tradicional de vacas Nelore pós-parto. Todas a vacas (n=348) foram submetidas ao mesmo protocolo de IATF à base de estradiol e de progesterona. Após 48 horas da retirada do implante, foi det
Arquivo Brasileiro de Medicina Veterinária e Zootecnia. Publicado em: 2022
-
2. 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
-
3. Farmacopuntura utilizando os acupontos Hou Hai e Bai Hui em protocolos de sincronização de estro em cabras
RESUMO Avaliou-se a eficiência da administração de subdoses de eCG nos acupontos Bai Hui e Hou Hai em protocolos de sincronização de estro em cabras. Na primeira etapa, 57 cabras foram distribuídas aleatoriamente em quatro tratamentos: T1- 300UI de eCG intramuscular (IM); T2- 60UI de eCG no acuponto Hou Hai; T3- 60UI de eCG no acuponto Bai Hui e T4- 60
Arq. Bras. Med. Vet. Zootec.. Publicado em: 06/06/2019
-
4. Reproductive performance of fixed-time artificial insemination in swine and factors for the technology success
RESUMO: A inseminação artificial em tempo fixo (IATF) surge como uma biotecnologia para definir o melhor momento para realizar uma única IA, reduzindo o número de células espermáticas por fêmea inseminada. Os protocolos de IATF podem se basear na detecção do estro ou na data de desmame e têm como objetivo sincronizar a ovulação a partir do uso de
Cienc. Rural. Publicado em: 18/02/2019
-
5. Short, medium or long-term hormonal treatments for induction of synchronized estrus and ovulation in Saanen goats during the nonbreeding season
The objective of this study was to compare the effect of hormonal treatment duration through the use of intravaginal sponges impregnated with 60 mg MAP for 6 (G6; n = 10), 9 (G9; n = 10) or 12 (G12; n = 10) days. All nulliparous (n = 15) and lactating (n = 15) Saanen goats received 37.5 µg d-cloprostenol and 200 IU eCG 24 hours before sponge removal during
R. Bras. Zootec.. Publicado em: 2013-03
-
6. Comparação de métodos auxiliares na identificação de estros em vacas e novilhas mestiças leiteiras
Objetivou-se neste estudo avaliar a eficiência de métodos auxiliares de detecção de estro em fêmeas bovinas. No experimento 1, avaliou-se a eficiência do Estrotect em comparação com a observação visual em 58 vacas mestiças leiteiras. Os animais foram divididos em dois grupos: o grupo IATF (n= 21) foi submetido a um protocolo de inseminação artif
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 04/06/2012
-
7. Excretion of Brucella abortus vaccine B19 strain during a reproductive cycle in dairy cows
This paper aimed to determine the excretion period of B19 vaccine strain during a complete reproductive cycle (from estrus synchronization, artificial insemination, pregnancy and until 30 days after parturition) of dairy cows from 3 to 9 years old that were previously vaccinated from 3 to 8 months. Three groups were monitored with monthly milk and urine coll
Brazilian Journal of Microbiology. Publicado em: 2012-06
-
8. Receptores do hormônio luteinizante em diferentes porções do oviduto de éguas em estro. / Receptors for luteinizing hormone in different portions of the oviduct of mares in estrus
Embryonic development begins with the fertilization of the egg by the sperm in the oviduct. The oviduct is a tortuous organ which extended measures 20 to 30cm and is divided into three parts: the isthmus, ampulla and infundibulum. Hormones influence the activity of target cells by binding to specific receptor molecules. Immunohistochemistry is the set of pro
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2012
-
9. 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
-
10. Expressão gênica da prolactina, do receptor de prolactina e das hialuronam sintases e a imunoistoquímica do ácido hialurônico e do receptor CD44 em úteros de camundongos fêmeas com hiperprolactinemia induzida pela metoclopramida, durante as fases do ciclo estral / Gene expression of the prolactin, of the prolactin receptor and of the hyaluronan synthases and immunohistochemistry of the hyaluronic acid and of the CD44 receptor in uterus of female mice with metoclopramide-induced hyperprolactinemia throughout the estrous cycle
OBJECTIVE: To evaluate the gene expression of prolactin, prolactin receptor and hialuronan sintase and immunohistochemistry of hyaluronic acid and CD44 in the uterus of female mice with metoclopramide-induced hyperprolactinemia throughout the estrous cycle. METHODS: 80 adult (100 days old) female virgin mice were randomly divided into two groups of 40 animal
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/04/2011
-
11. Induction of ovulation in quarter horse mares through the use of deslorelin acetate and human chorionic gonadotrophin (hCG)
The aim this study was to compare two protocols of induction for ovulation by desloreline acetate and hCG in Quarter Horse mares. The choice of the animals was based on the observations by the estrus, by rectal palpation of the ovaries and by ultrassonography of the follicular dynamics. After estrus detection and follicle control, the measurement of the foll
Brazilian Archives of Biology and Technology. Publicado em: 2011-06
-
12. Sincronização da ovulação utilizando FSH em substituição à eCG em cabras
The effect of substitution of equine chorionic gonadotropin (eCG) by follicle stimulating hormone (FSH) in synchronization protocols of ovulation in dairy goats was evaluated. Twelve goats received intravaginal sponges impregnated with 60mg of medroxyprogesterone acetate (MAP) for 10 days. The sponges were removed and the animals were distributed into two gr
Arquivo Brasileiro de Medicina Veterinária e Zootecnia. Publicado em: 2011-06