Systems of Nelore cattle for a beef production in Northwest Paraná

Authors

  • João Carlos Aguiar de Mattos Instituto de Zootecnia, Divisão de Zootecnia de Bovinos de Corte, Seção de Avaliação e Classificação do Gado de Corte, Nova Odessa, SP
  • Benedicto do Espírito Santo de Campos Instituto de Zootecnia, Divisão Técnica Básica e Auxiliar, Seção de Estatística e Técnica Experimental, Nova Odessa, SP
  • Segundo Rosendo Moralles Instituto Agronômico do Paraná, Curitiba, PR
  • Wilson Lorenzoni Instituto Agronômico do Paraná, Curitiba, PR

Abstract

For testing, 4 options of management to beef cattle from Nelore steers, created in Paranavaí, State of Paraná, Brazil, 56 steers with 8 to 10 months old received the following treatments since may, 1978: I - 13 months in pasture and 3 months in feed lot, with Panicum maximum hay; II - 4 months in additional pasture, 9 months in private pasture and 3 months in feed lot, with Panicum maximum hay; III - 4 months in additional pasture, 9 months in private pasture and 3 months in feed lot, with Cynodon plectostachyus hay; IV - 22 months in pasture only. When the periods finished they were slaughtered and their carcasses minutely studied. Results demonstrated a reduction of 6 months in time necessary to prepare lots I, II e III and in slaughter the IV lot showed more carcass yield, more heavy head, more longissimus dorsi muscle and more fat over the longissimus dorsi muscle. In carcasses were observed hight correlations between: lived wight (LW) x warm weight (WW); LW x cold weight (CW); LW x forequarter (FQ); LW x hind quarter (HQ); LW x short plate and flank (SPF); WW x CW; WW x FQ; WW x HQ; WW x SPF; CW x FQ; CW x HQ; CW x SPF; warm carcass yield (WCY) x chilled carcass yield (CCY); FQ x HQ; FQ x SPF and HQ x SPF. It is concluded in this work that 3 months of feed lot in the 2nd dry season of animals life were sufficient to reduce 6 months of preparing and to get slaughter in 2 years old.

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Published

2014-01-29

Issue

Section

FORAGE CROPS AND PASTURES

How to Cite

Systems of Nelore cattle for a beef production in Northwest Paraná. (2014). Bulletin of Animal Husbandry, 43(1), 7-18. http://bia.iz.sp.gov.br/index.php/bia/article/view/609

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