Nutritional requirements and energy efficiency of beef cows

Authors

  • Lucien Bissi da Freiria
  • Adriano Jorge Possamai
  • Pedro Ivo Jose Lopes da Rosa e Silva
  • Joanis Tilemahos Zervoudakis

DOI:

https://doi.org/10.22256/pubvet.v8n9.1714

Keywords:

intake, pregnancy, lactation, size body

Abstract

Review studies related to nutritional and energy efficiency of cow Nellore, data reporting requirements of the fractions of energy and protein for these animals during gestation and lactation. Little is known about the nutritional requirements of beef cows raised in tropical conditions, many data are still based animal research in European temperate conditions, under or over estimating the values that could possibly be found in Brazilian conditions. With this, we used the equations obtained by studies conducted in Brazil to produce tables with the net energy requirements, energy metabolizable, total digestible nutrients for maintenance and gain weight, based on cows in different stages of pregnancy, lactation and size body. As for the protein fractions. Based on the data obtained it is concluded that in the last third of gestation is the significant increase in demand for energy and protein, and lactating cows have a demand that exceeds their ingestive capacity, for a gain of 1 kg / day with CMS around 2% of body weight.

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Published

2015-09-08

Issue

Vol. 8 No. 09 (2014): Mai. 1

Section

Produção animal

License

Copyright (c) 2014 Lucien Bissi da Freiria, Adriano Jorge Possamai, Pedro Ivo Jose Lopes da Rosa e Silva, Joanis Tilemahos Zervoudakis

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

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How to Cite

Nutritional requirements and energy efficiency of beef cows. (2015). Pubvet, 8(09). https://doi.org/10.22256/pubvet.v8n9.1714

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