Lambing Interval
Mostrando 1-7 de 7 artigos, teses e dissertações.
-
1. Evaluation of some reproductive traits of Pelibuey ewes under humid tropical conditions of Mexico
ABSTRACT We evaluated the effect of some environmental factors on age at first lambing (AFL) and lambing to conception interval (LCI) of Pelibuey ewes under the humid tropical conditions of Mexico. Ewes grazed on Tanzania (Panicum maximum), Bermuda (Cynodon dactylon), and Brachiaria grass (Brachiaria humidicola) and received hay in the corral in the months o
R. Bras. Zootec.. Publicado em: 10/06/2019
-
2. Genetic parameters for growth, reproductive and maternal traits in a multibreed meat sheep population.
The genetic parameters for growth, reproductive and maternal traits in a multibreed meat sheep population were estimated by applying the Average Information Restricted Maximum Likelihood method to an animal model. Data from a flock supported by the Programa de Melhoramento Genético de Caprinos e Ovinos de Corte (GENECOC) were used. The traits studied includ
Genetics and Molecular Biology. Publicado em: 2011
-
3. Estimativas de componentes de variÃncias e de valores genÃticos para caracterÃsticas de crescimento, reproduÃÃo e habilidade materna em ovinos da raÃa Somalis Brasileira / Estimates of variance components and breeding values for growth, reproductive and maternal traits of Brazilian Somali hair sheep
The aims of this study were to estimate genetic parameters for growth, reproductive and maternal traits and assess the different adjustments of fixed effects in the prediction of breeding values for weight and weight gain at weaning of Brazilian Somali sheep, reared in semi-arid. Data from the NÃcleo de ConservaÃÃo da Embrapa Caprinos e Ovinos, located in
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 17/12/2010
-
4. Genetic parameters for growth, reproductive and maternal traits in a multibreed meat sheep population
The genetic parameters for growth, reproductive and maternal traits in a multibreed meat sheep population were estimated by applying the Average Information Restricted Maximum Likelihood method to an animal model. Data from a flock supported by the Programa de Melhoramento Genético de Caprinos e Ovinos de Corte (GENECOC) were used. The traits studied includ
Genetics and Molecular Biology. Publicado em: 09/10/2009
-
5. Aromatase gene and its effects on growth, reproductive and maternal ability traits in a multibreed sheep population from Brazil
We determined the polymorphism C242T of the aromatase gene (Cyp19) and its allelic frequency, as well as the effect of the variants on productive and reproductive traits in 71 purebred Santa Inês sheep, 13 purebred Brazilian Somali sheep, nine purebred Poll Dorset sheep, and 18 crossbred 1/2 Dorper sheep. The animals were genotyped using the PCR-RFLP techni
Genetics and Molecular Biology. Publicado em: 03/07/2009
-
6. Effects of growing rates in prepubertal period on performance, age at puberty and milk yield of Santa Ines sheep / Efeitos de diferentes taxas de crescimento na recria sobre o desempenho, idade a puberdade e produção leiteira em fêmeas da raça Santa Inês
Trial I: Sixty Santa Ines ewe lambs were used to evaluate the effects of three growing rates until 7 months of age. Treatments were defined to achieve high (HGR), moderate (MGR) and low (LGR) growing rates. The dry matter intake and average daily gain (ADG) were evaluated, well as serum levels of progesterone in order to detect the age of puberty. Linear eff
Publicado em: 2009
-
7. Estimates of (co)variance components and genetic parameters for reproductive traits in Santa Inês sheep breed using linear and threshold models / Estimativas de componentes de (co)variância e parâmetros genéticos para características reprodutivas em ovinos da raça Santa Inês utilizando modelos linear e de limiar
The aims of this study were evaluated genetic parameters with sire and animal mixed models, to continuous and discreet reproductive traits, as well as predict sires breeding values to continuous and discreet reproductive traits in Santa Inês ewes breed. The traits analyzed in this study were lambing interval (LI, N = 1,066), fertility (FR, N = 1,006) and nu
Publicado em: 2008