Energy-protein supplementation and mineral body development and ingestive behavior of crossbed Holstein x Gir heifer€™s grazing in dry season

Authors

  • Ricardo Dias Signoretti Secretaria de Agricultura e Abastecimento do Estado de São Paulo, Agência Paulista de Tecnologia dos Agronegócios, Polo Regional de Desenvolvimento Tecnológico dos Agronegócios da Alta Mogiana, Colina, SP
  • Flávio Dutra de Resende Secretaria de Agricultura e Abastecimento do Estado de São Paulo, Agência Paulista de Tecnologia dos Agronegócios, Polo Regional de Desenvolvimento Tecnológico dos Agronegócios da Alta Mogiana, Colina, SP
  • Gabriel Miranda Drub Universidade Estadual Paulista, Faculdade de Ciências Agrárias e Veterinárias, Jaboticabal, SP
  • Fernando Henrique Menegello de Souzas Centro Universitário da Fundação Educacional de Barretos, Curso de Zootecnia, Barretos, SP
  • Elisa Marcela de Oliveira Universidade Estadual Paulista, Faculdade de Ciências Agrárias e Veterinárias, Jaboticabal, SP

DOI:

https://doi.org/10.17523/bia.v70n3p244

Keywords:

weight gain, organic mineral, grazing, heifers rearing

Abstract

The objective was to evaluate the effect of two levels of supplementation with sources of inorganic and organic minerals in the dry season on growth and ingestive behavior of crossbred Gir x Holstein, with an average of 19.4 ± 1.94 months and 307.75 ± 25.0 kg body weight , allotted to an completely randomized design with scheme factorial 2 x 2 (mineral x levels) with five replicates per treatment. The heifers remained on Brachiaria brizantha (Hochst. ex. A. Rich.) Stapf. cv. Marandu managed in a rotational grazing system, and treatments were supplementation sources of inorganic and organic minerals and two levels of 2.5 and 5.0 g/kg of body weight. The growth of heifers that received supplement in two levels with sources of inorganic minerals did not differ (P>0.05) from those that received sources of organic minerals. However, the heifers receiving 5.0 g/kg of body weight had higher average daily gain (0.476 kg/animal) compared with those receiving 2.5 g/kg of body weight (0.368 kg/animal). The performance of dairy heifers rearing pasture was similar when supplemented with organic or inorganic mineral sources.

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Published

2013-03-29

Issue

Section

ANIMAL NUTRITION

How to Cite

Energy-protein supplementation and mineral body development and ingestive behavior of crossbed Holstein x Gir heifer€™s grazing in dry season. (2013). Bulletin of Animal Husbandry, 70(3), 244-253. https://doi.org/10.17523/bia.v70n3p244

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