Paper

Ile De France Lambs Fed Diets Containing Glycerin: Characteristics of Carcass and Commercial Cuts


Authors:
F.A. Merlim; A.G. da Silva Sobrinho; T.H. Borghi; N.M.B.L. Zeola; E.P. Romanzini; N. Andrade; F.A. Almeida; L.G.A. Cirne
Abstract
To assess if glycerin can substitute for corn in sheep diets, 30 Ile de France lambs with initial body weights of 15.1 ± 0.146 kg were fed three diets containing natural sugarcane as forage and concentrate (50:50) with or without glycerin; diets containing glycerin consisted of 100 or 200 g/kg in the dry matter (DM). All diets contained similar protein and energy levels at 16.72% or 3.86 Mcal/kg DM, respectively. When the lambs reached a weight of 32.2 ± 0.207 kg, they were slaughtered, and the carcass characteristics and commercial cuts were evaluated. The experimental design was entirely randomized, the data were submitted to analysis of variance, and the glycerin content was deployed in linear or quadratic effects. The significance level was 5%. The lambs demonstrated similar carcass characteristics with a 45.1% mean cold carcass yield, 13.31 cm2 of loin eye area and 2.52 mm of subcutaneous fat thickness. The weight and yield of the commercial cuts were not affected by the inclusion of glycerin, except for the loin weight which demonstrated a quadratic effect and increased with the inclusion of 100 g/kg DM; however, this value decreased when the glycerin was increased to 200 g/kg DM. Thus, we conclude that the inclusion of up to 200 g glycerin/kg DM is an effective corn substitute in the diet of Ile de France fattening lambs.
Keywords
Alternative Foods; By Products; Glycerol; Ruminants; Sheep; Sugarcane
StartPage
79
EndPage
83
Doi
10.18005/JAEB0302005
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