Inclusion of sunflower seeds in the diet of lambs on carcass quantitative characteristics and meat quality

Authors

  • Sandra Mari Yamamoto Universidade Federal do Vale do São Francisco
  • Américo Garcia da Silva Sobrinho Faculdade de Ciências Agrárias e Veterinárias
  • Rafael Silvio Bonilha Pinheiro Faculdade de Ciências Agrárias e Veterinárias
  • André Gustavo Leão Universidade Federal da Bahia
  • Daniela Pionorio Vilaronga Castro Universidade Federal do Vale do São Francisco

DOI:

https://doi.org/10.5433/1679-0359.2013v34n4p1925

Keywords:

Carcass yield, Helianthus annuus, Lambs, Loin, Tenderness.

Abstract

This study aimed to evaluate the carcass quantitative characteristics, tissue composition of carcass cuts and meat quality of lambs receiving sunflower seeds in the diet. Twenty-one lambs 7/8 Ile de France 1/8 Ideal, not castrated, with initial body weight of 17 kg were housed in individual pens and distributed in three diets (0,7.5 and 15% of sunflower seeds inclusion) in a completely randomized design in 3 x 2 factorial arrangement (three diets and two carcass cuts). At the end of the experimental period, the animals were slaughtered; weights and hot and cold carcass yields and commercial and biological carcass dressing were collected. The carcasses were split lengthways and left half carcass divided into six anatomical parts. The leg and loin were removed for evaluation of tissue composition, meat color, water holding capacity, cooking losses and shearing force. Difference was detected in the commercial carcass yield; with higher value (46.82% of total weight) for carcasses of lambs fed without sunflower seeds when compared with carcass yield (44.11%) of lambs fed with 15% of sunflower seed inclusion. The proportion of muscle and total fat, as muscle:fat ratio were affected (P<0.05) by feeding, with higher quantity of muscle (63.15%) and less fat (16.63%) in the leg and loin cuts of lambs fed without sunflower seeds. In the leg was observed higher proportions of muscle (67.27%), muscle:bone ratio (4.08) and muscle:fat ratio (4.92) when compared with the loin cut. The water retention capacity and shearing force of Longissimus lumborum muscle showed better results when compared with Semimembranosus muscle. The inclusion of sunflower seeds in the diet of feedlot lambs increased the fat deposition in carcass cuts, however did not affect the other parameters of meat quality.

Author Biographies

Sandra Mari Yamamoto, Universidade Federal do Vale do São Francisco

Profª. do Colegiado de Zootecnia da Universidade Federal do Vale do São Francisco, UNIVASF, Petrolina, PE.

Américo Garcia da Silva Sobrinho, Faculdade de Ciências Agrárias e Veterinárias

Prof. do Deptº de Zootecnia da Faculdade de Ciências Agrárias e Veterinárias, UNESP, Jaboticabal, SP.

Rafael Silvio Bonilha Pinheiro, Faculdade de Ciências Agrárias e Veterinárias

Prof. do Deptº de Biologia e Zootecnia da FEIS/UNESP, Campus de Ilha Solteira, SP.

André Gustavo Leão, Universidade Federal da Bahia

Discente de Pós-doutorado em Zootecnia da Universidade Federal da Bahia, UFB, Salvador, BA.

Daniela Pionorio Vilaronga Castro, Universidade Federal do Vale do São Francisco

Discente de Mestrado do Programa de Pós-Graduação em Ciência Animal, UNIVASF, Petrolina, PE.

Published

2013-08-30

How to Cite

Yamamoto, S. M., Silva Sobrinho, A. G. da, Pinheiro, R. S. B., Leão, A. G., & Castro, D. P. V. (2013). Inclusion of sunflower seeds in the diet of lambs on carcass quantitative characteristics and meat quality. Semina: Ciências Agrárias, 34(4), 1925–1934. https://doi.org/10.5433/1679-0359.2013v34n4p1925

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