Weight At Calving
Mostrando 13-24 de 34 artigos, teses e dissertações.
-
13. Genetic analyses of days to calving their relationships with other traits in a Canchim herd.
Heritabilities and genetic correlations in a Canchim beef cattle herd were estimated using data on the following traits: male scrotal circumference at twelve months (SC12); days to first calving (DFC) for heifers; days to calving (DC) for cows; male and female weight (W) at twelve months (W12); heifer weight at the start of the first breeding season (WFBS) a
Genetics and Molecular Biology. Publicado em: 2011
-
14. Genetic correlations between days to first calving and scrotal circumference and weight at 12 months of age in a Canchim beef cattle herd.
2006
WORLD CONGRESS ON GENETICS APPLIED TO LIVESTOCK PRODUCTION. Publicado em: 2011
-
15. Características produtivas de fêmeas da raça Nelore e cruzadas 1/2 Canchim + 1/2 Nelore.
O objetivo deste trabalho foi estudar os efeitos de fatores de meio e gentivos sobre o peso ao parto (PVP) e o periodo de gestacao (PG) de vacas Nelores e 1/2 Canchim + 1/2 Nelore, acasaladas com touros das racas Canchim e Charolesa, respectivamente.
REUNIAO DA SOCIEDADE BRASILEIRA DE ZOOTECNICA. Publicado em: 2011
-
16. Modeling the effect of age at calving × breed group of dam?s interaction on weaning weight of Charolais-Zebu crossbred calves.
Este trabalho foi realizado com o objetivo de avaliar alternativas para modelar a interação entre idade ao parto e grupo genético da vaca (GGV) sobre o peso à desmama de bezerros mestiços Charolês-Zebu. Dados de peso à desmama de 56.965 bezerros Charolês-Zebu foram analisados utilizando o método de quadrados mínimos. Foram estimados coeficientes de
Revista Brasileira de Zootecnia. Publicado em: 2011
-
17. 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
-
18. UtilizaÃÃo de trÃs modelos de produÃÃo de carne ovina na regiÃo semi-Ãrida do Brasil / Using three models of sheep meat production in the semiarid region of Brazil
The objective of this study was to determine the reproductive performance of Santa InÃs ewes maintained in three production models to determine the influence of the technological level in the reproduction of animals. During three years 150 sheep were assessed before the treatment period divided into three equal groups according to age and body weight, each
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/06/2010
-
19. Association between reproductive traits and four microsatellites in Brangus-Ibagé cattle
The aim of the present study was to verify associations between reproductive efficiency and four microsatellite markers located in synteny with genes involved in the regulation of reproductive mechanisms. A sample of 107 females from a Brangus Ibagé population (5/8 Aberdeen Angus x 3/8 Nelore) was characterized for ETH225 (D9S1) and MM12E6 (D9S20) microsate
Publicado em: 2010
-
20. Curves of growth and productivity of Nellore and cross from different biological types in intensive production system / Curvas de crescimento e produtividade de vacas Nelore e cruzadas, de diferentes tipos biológicos, em sistema de produção intensiva
Initially, were analyzed weight-age data from birth to 100 months of age from cows of four genetic groups (G): Nellore (NEL), ½Nellore + ½Canchim (CN), ½Angus +½Nellore (AN) and ½Simmental + ½Nellore (SN), of a experiment carried out at Embrapa Southeast Cattle Research Center, State of São Paulo, Brazil. The animals considered in this study were born
Publicado em: 2010
-
21. Association between MUC1 gene polymorphism and expected progeny differences in Nelore cattle (Bos primigenius indicus)
MUC1 is a heavily glycosylated mammalian transmembrane protein expressed by mucosal secretory tissues for both protection against microbial infection and lubrication. An important characteristic of MUC1 is its variable number of tandem repeats (VNTR) containing several sites for O-glycosylation. VNTR length has been associated with many human diseases and wi
Genetics and Molecular Biology. Publicado em: 11/12/2009
-
22. Organic zinc, copper and selenium supplementation in dairy cows and effects on milk quality and mammary gland health / Fornecimento de zinco, cobre e selênio orgânicos para vacas leiteiras e efeitos sobre a qualidade do leite e saúde da glândula mamária
The general objectives of this study were to evaluate the effect organic zinc (Zn), copper (Cu) and selenium (Se) supplementationto dairy cows on milk quality, mammary gland health and feed intake. The specific objectives were to evaluate: the somatic cell count (SCC), clinical and subclinical mastitis prevalence, milk production and composition during the f
Publicado em: 2009
-
23. Evaluation of milk production systems using a dynamic simulation model / Avaliação de sistemas de produção de leite por meio de modelo dinâmico de simulação
The Thesis is divided into four chapters. Chapter 1 aimed at selecting functions that mathematically represent lactation curves, providing a better fit to the observed data, to be used in simulation models of milk production systems. Data base was built with 6,459 recordings of daily milk production per cow obtained from monthly and quarterly milk controls b
Publicado em: 2008
-
24. Bayesian inference on field data for genetic parameters for some reproductive and related traits of Nellore cattle (Bos indicus)
We used Gibbs sampling in single and two-trait animal models to estimate genetic parameters for some reproductive and related traits of Nellore cattle (Bos indicus). Female traits were age at first calving (AFC), cumulative productivity (CP) and adult weight (AW). For males, scrotal circumferences at 365 and 450 days of age were analyzed. Gibbs sampling usin
Genetics and Molecular Biology. Publicado em: 2007-03