Productive performance of dairy heifers supplemented in the dry season differed pasture, under two stoking rates

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
  • José Cícero Gandara Moraes Fundação Educacional de Barretos, Centro Universitário, Barretos, SP
  • Bruna Pessim Fundação Educacional de Barretos, Centro Universitário, Barretos, SP
  • Fernando Henrique Meneguello de Souza Universidade Estadual Paulista, Faculdade de Ciências Agrárias e Veterinárias, Jaboticabal, SP
  • Lucas ngelo de Souza Fundação Educacional de Barretos, Centro Universitário, Barretos, SP
  • Rodolfo Toga Modesto 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

Keywords:

desenvolvimento corporal, pastejo, recria de novilhas, suplementação

Abstract

The objective was to evaluate the characteristics of productive performance of crossbred Holstein x Gir heifers grazing on Brachiaria brizantha differed (Hochst. A. Rich.) Stapf. cv. Marandu managed in a rotational stocking, during the dry season of the year. The treatments evaluated were stocking rate of 1.0 UA / ha and 6.0 g / kg body weight (BW) / day and stocking rate of 2.0 UA / ha and 12.0 g / kg BW / day-energy protein supplement. The heifers had a average age of 17.46 ± 3.74 months and BW averaging 304.83 ± 33.7 kg and were distributed to a randomized block. The animals were weighed and measured for height at the withers (HW), heart girth (HG), rump length (RL) and body condition score (BCS). The BW average batch was used for the calculations to adjust the amount of supplement offered. It was found that the performance of heifers that were subjected to stocking with 2 UA/ha and 12.0 g / kg BW had higher average daily gain (0.579 kg / animal) in comparison to those undergoing stocking with 1 UA/ha and 6.0 g / kg BW (0.361 kg / animal). With respect to the development of animal body, it was found that the initial HG, initial and final HW, the initial RL and BCS did not differ between combinations of stocking rates and levels of supplementation. The heifers showed better productive performance in situations differed pastures, with 2 UA/ha and 12.0g/kg BW/day the protein-energetic supplement.

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Published

2013-01-11

Issue

Section

FORAGE CROPS AND PASTURES

How to Cite

Productive performance of dairy heifers supplemented in the dry season differed pasture, under two stoking rates. (2013). Bulletin of Animal Husbandry, 70(1), 28-37. http://bia.iz.sp.gov.br/index.php/bia/article/view/1930

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