Effects of dietary energy density on nutrient digestibility, performance and carcass characteristics of Morada Nova lambs

Autores

  • Marcus Roberto Goes Ferreira Costa Universidade Federal do Ceará
  • Elzânia Sales Pereira Universidade Federal do Ceará
  • Patrícia Guimarães Pimentel Universidade Federal do Ceará
  • Aderbal Marcos de Azevêdo Silva Centro de Saúde e Tecnologia Rural, Universidade Federal de Campina Grande
  • Pedro Veiga Rodrigues Paulino Universidade Federal de Viçosa
  • Ivone Yurika Mizubuti Universidade Estadual de Londrina
  • Edson Luis de Azambuja Ribeiro Universidade Estadual de Londrina
  • Andréa Pereira Pinto Universidade Federal do Ceará
  • Danilo de Araújo Camilo Universidade Federal do Ceará

DOI:

https://doi.org/10.5433/1679-0359.2013v34n3p1389

Palavras-chave:

Digestibility, Growth, Roughage, concentrate ratio.

Resumo

Effects of metabolizable energy (ME) levels were evaluated on nutrient digestibility and carcass characteristics in Morada Nova lambs. Forty Morada Nova lambs with initial weight of 12.2 ± 2.05 kg, were used. Five treatments were defined according to metabolizable energy (0.96; 1.28; 1.72; 2.18 and 2.62 Mcal/kg DM) levels. It was used a randomized block design. Animals were slaughtered when body weight mean (BW) of the group reached 25 kg. Linear effect was observed for digestibility coefficient of DM, OM, EE, CP, NDF, TC, FC and NFC. Daily weight gain (DWG) presented linear increase (P<0.0001) with ME levels. The highest DWG observed was 135.98 g/day for the level of 2.62 Mcal/ kg DM. Carcass characteristics (hot carcass weight, cold carcass weight, loss by cooling in kilogram and biological yield) did not vary in function of ME levels with average values of 11.52; 11.03; 0.48 and 57.25, respectively. It was concluded that the incresead level of dietary energy influences nutrient digestibility and daily weight gain of Morada Nova lambs during the growing period, without changing carcass traits.

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Biografia do Autor

Marcus Roberto Goes Ferreira Costa, Universidade Federal do Ceará

Prof. Dr. do Ensino Básico, Técnico e Tecnológico do IFCE, Campus Crateús, Crateús, CE.

Andréa Pereira Pinto, Universidade Federal do Ceará

Profª Drª do Deptº de Zootecnia, UFC, Fortaleza, CE.

Danilo de Araújo Camilo, Universidade Federal do Ceará

Discente de Doutorado do Deptº de Zootecnia, UFC, Fortaleza, CE.

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Publicado

2013-06-24

Como Citar

Costa, M. R. G. F., Pereira, E. S., Pimentel, P. G., Silva, A. M. de A., Paulino, P. V. R., Mizubuti, I. Y., Ribeiro, E. L. de A., Pinto, A. P., & Camilo, D. de A. (2013). Effects of dietary energy density on nutrient digestibility, performance and carcass characteristics of Morada Nova lambs. Semina: Ciências Agrárias, 34(3), 1389–1398. https://doi.org/10.5433/1679-0359.2013v34n3p1389

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