Effect of weaning age and supplementary feeding on Iamb performance

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, Posto de Ovinos e Caprinos de Itapetininga, SP
  • Antonio Álvaro Duarte de Oliveira Instituto de Zootecnia, Divisão Técnica Básica e Auxiliar, Seção de Estatística e Técnica Experimental, Nova Odessa, SP

Abstract

Ideal lambs were weaned at 9 (A), 12 (B) or 15 (C) weeks of age. Every weaning age was consisted of 4 treatments: ewe and lamb with supplementary feeding (A1, B1, C1); only ewe with supplementary feeding (A2, B2, C2); only lamb with supplementary feeding (A3, B3, C3) and withoul supplementary feeding (A4, B4, C4). Corriedale lamb were weaned at 12 (B) or 15 (C) weeks age. Every weaning age was consisted of 2 treatments only for ewes with (B2, C2) or without (B4, C4) supplementary feeding. The animals grazed on Digitaria decumbens Stent. grass composed of 5.3% CP and were supplemented a feeding composed of 17.3% CP that was offered 500g/ewe/day and 250g/lamb/day. No sex differences were observed at the 21th week of age. No differences were observed for Corriedale breed weaned at 12 or 15 weeks but for Ideal breed, weaned at 9, 12 or l5weeks of age, were observed differences (P < 0.01). Supplementary feeding differences were observed (P < 0.01) for Ideal and Corriedale lambs. No significant interactions were observed among treatments. No differences were observed for Iamb mortality form weaning age to 21 weeks of age. Fleece weight differences influenced by weaning age (P < 0.05) and supplementary feeding (P < 0.01) were observed for Ideal ewes but not for Corriedale ewes.

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Published

2014-01-29

Issue

Section

ANIMAL NUTRITION

How to Cite

Effect of weaning age and supplementary feeding on Iamb performance. (2014). Bulletin of Animal Husbandry, 41(1), 85-101. http://bia.iz.sp.gov.br/index.php/bia/article/view/648

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