Protein supplementation, during dry season, on young cows fertility

Authors

  • Paulo Gastão da Cunha Instituto de Zootecnia, Estação Experimental de Zootecnia de São José do Rio Preto, SP
  • Celso Boin Instituto de Zootecnia, Divisão de Zootecnia de Bovinos de Corte, Nova Odessa, SP
  • Delcácio Joaquim da Silva Instituto de Zootecnia, Divisão Técnica Básica e Auxiliar, Seção de Higiene Zootécnica e Análises, Nova Odessa, SP
  • Leopoldo Andrade de Figueiredo Instituto de Zootecnia, Estação Experimental de Zootecnia de São José do Rio Preto, SP
  • Roberto Molinari Peres Instituto de Zootecnia, Estação Experimental de Zootecnia de São José do Rio Preto, SP

Abstract

The effect of cottonseed meal supplementation during the dry period of the year on the calving percentage at the second parturition of pregnant Santa Gertrudis heifers was studied during 3 years (1979, 1980 and 1981). Three treatments were compared: A €” pasture: B €” pasture plus 0.257 kg of cottonseed meal/head/day; and C €” pasture plus 0.514 kg of cottonseed meal/head/day. The supplement was fed three times a week during four months, beginning in june (1979) and in july (1980 and 1981). A total of 84 females were utilized: 11, 8 and 9 per treatment in the first, second and third year, respectively. The cottonseed meal supplementation did not affected significantly calving percentage at the second parturition (P > 0.05), which were 40.4, 48.9 and 46.4% for treatments A, B and C, respectively. There was a significant effect of years (P < 0.05) on calving percentage (39.4, 66.7 and 29.6 for 1979, 1980 and 1981, respectively). This year effect was mainly due to weather conditions (rain and frost) during the dry season, which affected forage availability.

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Published

2014-01-29

Issue

Section

ANIMAL NUTRITION

How to Cite

Protein supplementation, during dry season, on young cows fertility. (2014). Bulletin of Animal Husbandry, 41(1), 47-56. http://35.198.24.243/index.php/bia/article/view/654

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