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Registros recuperados: 13 | |
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CAMPOS, W. E.; SAUERESSIG, M. G.; SATURNINO, H. M.; SOUZA, B. M. de; AMARAL, T. B.; FERREIRA, F.. |
ABSTRACT: The reproductive efficiency is one of the major factors contributing to the success of beef cattle production systems. To achieve satisfatory reproductive performance, it is necessary an adequate herd management, particulary the adoption of breeding season, adequate cow nutrition and adequate body condition score, evaluation of the fertility of the bulls and adoption of suitable sire: cow ratio. Moreover, other practices can enhance female reproductive performance, such as separation of calves from their dams for a period (Shang), suckling restriction, exposition of females to bulls, and selection of the most fertile animals. |
Tipo: Livros |
Palavras-chave: Management; Breeding seasons; Acasalamento; Inseminação Artificial; Gado de Corte; Manejo; Reprodução Animal; Sanidade Animal; Artificial insemination; Animal health; Beef cattle; Reproduction. |
Ano: 2005 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/544626 |
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BARIONI, L. G.; BELTRAME, R. T.; VELOSO, R. F.; SAUERESSIG, M. G.. |
This publication presents and evaluates two methods for ex-ante analysis of the optimum number of recipient females in embryo transfer programs. The first method is determinist, based on algebraic deduction, while the second is based on stochastic simulation using a Monte Carlo method for generating the number of embryos in each collection. The results show that the deterministic method sustainability overestimate the biologic efficiency of the embryo transfer program and underestimate, consequently, the cost per pregnancy (up to 9,1%). The superiority of the stochastic simulations was more pronounced when considering high variability in the number of embrios produced, reduced number of donnors ana low cost per recipient. |
Tipo: Folhetos |
Palavras-chave: Bovinae; Animal embryos; Bovino; Embrião Animal; Melhoramento Animal; Reprodução Animal; Animal breeding; Reproduction. |
Ano: 2003 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/568679 |
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Registros recuperados: 13 | |
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