Consulta: subjectFacets:"Anestrus"
Registros recuperados: 3
Data/hora: 10/06/2024 11:49:14

Efecto macho en la dinámica folicular de ovejas de lana superovuladas.
Provedor de dados: 32
Autores: Domínguez Islas, Manuel.
Se evaluó la incorporación del “efecto macho” a un protocolo de superovulación. Se utilizaron 20 ovejas de lana de la raza Suffolk, Hampshire y Dorset, de condición corporal (cc)  3.1 ± 0.4, con edad promedio de 3.9 ± 0.8 años, durante época de transición de anestro a temporada reproductiva en los meses de junio-julio del 2011. Se asignaron 10 ovejas de manera aleatoria en dos lotes. Los tratamientos fueron los siguientes: Tratamiento 1 (T1): se introdujo un CIDR (considerado día 0) a cada ovejas durante 9 días, 48 horas previas al retiro, se administro 500 μg de Cloprostenol, además de 300 UI de Gonadotropina coriónica equina (eCG) y 250 UI de gonadotropinas hipofisarias de cerdo cada 12 horas (48, 36, 24, 12, 0 previas al retiro y 12 h después del...
Palavras-chave: Efecto macho; Ovejas; Anestro; Gonadotropinas; Folículo; Ganadería; Maestría; Male effect; Ewes; Anestrus; Gonadotropins; Follicle.
Ano: 2012
URL: http://hdl.handle.net/10521/1779

Reproductive response of Pelibuey sheep to the application of recombinant bovine somatotropin and a metabolic restorative preparation
Provedor de dados: 86
Autores: Fraire-Cordero,Silvia; Rodríguez,Paulino Pérez; Pérez-Hernández,Ponciano; Cortez-Romero,César; Gallegos-Sánchez,Jaime.
Abstract: The objective of this work was to evaluate the effect of recombinant bovine somatotropin (rBST) and of the metabolic restorative preparation Metabolase (MR) on the reestablishment of the post-partum ovarian activity of Pelibuey sheep. Ninety-four ewes, with their respective lambs, were randomly assigned to one of the following treatments: T1, continuous suckling (CS); T2, CS + MR; T3, CS + rBST; and T4, CS + MR + rBST. Ovulating percentages, weight changes in ewes and lambs, incidence of estrus, onset and return to estrus, calving, fecundity, and prolificacy were evaluated. The highest ovulation percentages were recorded for CS in T1 and T2, and the lowest ones for rBST in T3 and T4. The treatments had a significant effect on lamb weight. Ewes in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ovis aries; Anestrus; Body weight; Estrus induction; Growth hormone; Post-partum reproductive activity.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018001201392

Reproductive efficiency of Nellore cows nursing Nellore or crossbred Simmental × Nellore calves
Provedor de dados: 96
Autores: Vargas Junior,Fernando Miranda de; Wechsler,Francisco Stefano; Oliveira,Marcus Vinicius Morais de; Seno,Leonardo de Oliveira; Fernandes,Alexandre Rodrigo Mendes; Camilo,Fernando Rossi.
The objective of this study was to analyze the influence of genetic group (GG) of the calf during gestation, mobilization of body reserves and period of postpartum anestrus in Nellore cows. Thirty-seven primiparous and multiparous cows were used: 24 gave birth to Nellore (NEL), and 13 gave birth to ½ Simmental × ½ Nellore (SIM) calves. According to the date of calving, cows were divided into three blocks, with intervals of 20 days between blocks. The body condition (BC) of the cows was estimated subjectively on a scale from 0 to 5 points, with intermediate grading of 0.5 points. We measured the thickness of subcutaneous fat (SF) between the 12th and 13th ribs and rump by ultrasound. Blood samples from each cow were collected weekly from the third week...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anestrus; Body condition; Crossing; Subcutaneous fat.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013000700003