Sheep performance on an eight month mating system interval

Authors

  • Domingos Sanchez Roda Instituto de Zootecnia, Divisão de Zootecnia Diversificada, Seção de Ovinos e Caprinos, Nova Odessa, SP
  • Luiz Eduardo dos Santos Instituto de Zootecnia, Divisão de Zootecnia Diversificada, Seção de Ovinos e Caprinos, Nova Odessa, SP
  • Eduardo Antonio da Cunha Instituto de Zootecnia, Divisão de Zootecnia Diversificada, Seção de Ovinos e Caprinos, Nova Odessa, SP
  • Diorande Bianchine Instituto de Zootecnia, Posto de Ovinos e Caprinos de Itapetininga, SP
  • Adelma Santana Leal Feitoza Instituto de Zootecnia, Posto de Ovinos e Caprinos de Itapetininga, SP

Keywords:

sheep, mating periods, Ideal, Corriedale

Abstract

The mating of ewes every eight months during four years (06 mating periods) was studied. 61 Ideal ewes provided 207 lambs (0.85 lamb/ewe/year), 27 Corriedale ewes produced 94 lambs (0.87 lamb/ewe/year) and 28 Suffolk ewes provided 101 lambs (0.90 lamb/ewe/year). From the 402 total lambs born, 133 of them (33.1%) came from January, 97 (24.1%) from September and 172 (42.8%) from May matings. Lamb death rate, from birth to weaning (70 days), was 12.0% for those born in winter (mating in January), 16.5% for those born in summer (mating in September) and 11.6% for those born in spring (mating in May). The ewe€™s weight at mating and parturition was not influenced by the mating period, whereas mating period influenced (P < 0.05) the ewe's weight at weaning. The lamb€™s weight at birth was influenced (P < 0.05) by the birth period. The weight at weaning was not affected by the birth period.

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Published

2014-01-14

Issue

Section

ANIMAL REPRODUCTION

How to Cite

Sheep performance on an eight month mating system interval. (2014). Bulletin of Animal Husbandry, 50(1), 49-54. http://bia.iz.sp.gov.br/index.php/bia/article/view/845

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