Characteristics of carcass and non-carcass components of lambs fed wet brewery waste as a roughage feed

Authors

DOI:

https://doi.org/10.5433/1679-0359.2021v42n3Supl1p1773

Keywords:

By-product, Components of live weight, Qualitative traits, Sheep, Slaughter.

Abstract

The objective of the present study was to evaluate the effect of including wet brewery waste (WBW) as the exclusive dietary roughage source on the characteristics of carcass and non-carcass components of feedlot-finished lambs. Thirty-two non-castrated male lambs weaned at 50 days of age, resulting from the cross between the Texel and Ile de France breeds, were used. The diet was constituted by roughage (WBW) and a concentrate composed of crushed maize, soybean meal, limestone and common salt. Treatments consisted of four levels of WBW as the roughage source in the diet (% dry matter), namely, 31, 44, 57 and 70%. Lambs were slaughtered upon reaching 34 kg live weight. The treatments resulted in a linear decrease in hot and cold carcass weights and yields, carcass compactness index, conformation, degree of fatness and rib-eye area. Among the primal cuts, the absolute weights of pallet, ribs and legs decreased as the WBW level was increased. As to the non-carcass components, only the total gastrointestinal content increased linearly with WBW. The increasing levels of WBW led to greater fasting losses and reduced carcass weights and yields. There was also a reduction in the degree of fatness, carcass compactness, carcass conformation index and rib-eye area Wet brewery waste at the concentration of 31% as the roughage source in the diet of finishing lambs in the feedlot provides better carcass traits.

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Author Biographies

Sérgio Carvalho, Federal University of Santa Maria

Prof., Postgraduate Course in Zootechnics, Federal University of Santa Maria, UFSM, Santa Maria, RS, Brazil.

Verônica Gindri Manzoni, Federal University of Santa Maria

Student of the Doctoral Course of the Postgraduate Program in Animal Science, UFSM, Santa Maria, RS, Brazil.

Claudia Flores Minuzi, Federal University of Santa Maria

Student of the Undergraduate Course in Science, UFSM, Santa Maria, RS, Brazil.

William Soares Teixeira, Federal University of Santa Maria

Student of the Doctoral Course of the Postgraduate Program in Animal Science, UFSM, Santa Maria, RS, Brazil.

Viviana Reboledo da Costa, Federal University of Santa Maria

Student of the Master's Course in the Postgraduate Program in Animal Science, UFSM, Santa Maria, RS, Brazil.

Larissa Lopes Barbosa, Federal University of Santa Maria

Student of the Undergraduate Course in Science, UFSM, Santa Maria, RS, Brazil.

Pablo Marques da Fontoura Corrêa, Federal University of Santa Maria

Student of the Undergraduate Course in Science, UFSM, Santa Maria, RS, Brazil.

Daniel Uliana, Federal University of Santa Maria

Student of the Undergraduate Course in Science, UFSM, Santa Maria, RS, Brazil.

Camila Milani de Moraes, Federal University of Santa Maria

Student of the Undergraduate Course in Science, UFSM, Santa Maria, RS, Brazil.

Amanda de Lima Ozorio, Federal University of Santa Maria

Student of the Undergraduate Course in Science, UFSM, Santa Maria, RS, Brazil.

Mariana de Oliveira, Federal University of Santa Maria

Student of the Undergraduate Course in Science, UFSM, Santa Maria, RS, Brazil.

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Published

2021-04-22

How to Cite

Carvalho, S., Manzoni, V. G., Minuzi, C. F., Teixeira, W. S., Costa, V. R. da, Barbosa, L. L., … Oliveira, M. de. (2021). Characteristics of carcass and non-carcass components of lambs fed wet brewery waste as a roughage feed. Semina: Ciências Agrárias, 42(3Supl1), 1773–1784. https://doi.org/10.5433/1679-0359.2021v42n3Supl1p1773

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