Please use this identifier to cite or link to this item:
Title: Performance and carcass characteristics of lambs fed diets with fat and vitamin E
Keywords: Ovinos - Carcaça
Nutrição de ruminantes
Ovinos - Nutrição
Sheep - Carcass
Ruminant nutrition
Sheep - Nutrition
Issue Date: 2011
Publisher: Sociedade Brasileira de Zootecnia
Citation: PINTO, A. P. P. et al. Performance and carcass characteristics of lambs fed diets with fat and vitamin E. Revista Brasileira de Zootecnia, Viçosa, MG, v. 40, n. 12, p. 2911-2921, 2011.
Abstract: This experiment aimed to determine the influence of diets with inclusion of protected fat and vitamin E on performance, yield and carcass characteristics of feedlot lambs with different weights. Thirty-two non-castrated Santa Ines lambs were fed diets with a ratio of 40% forage and 60% concentrate ad libitum, with presence or absence of protected fat and/or vitamin E, in a total of four diets. Two weights of early containment were also considered: between 20 and 25 kg and between 30 and 35 kg. All animals were slaughtered at 84 days of confinement. Animals fed diets without addition of protected fat, regardless of the use of vitamin E, had the highest intakes of dry matter, crude protein, neutral detergent fiber and ash, and decreased intake of ether extract. The variables investigated did not affect daily weight gain and total gain. Feed conversion was better for the lighter confined animals not fed protected fat. The heavier feedlot lambs fed diets with vitamin E showed higher cold carcass. The warm carcass for the lighter animals confined fed with vitamin E, and the heavier ones, fed with protected fat and vitamin E, showed the best yields of cold carcass. Objective measures of the carcass cold had the highest mean for heavier feedlot lambs. The addition of fat in the diet reduces the intake of dry matter and increases the ether extract. Although the inclusion of vitamin has no effect on intake of nutrients, it protects the carcasses from losses during cooling, and weight differences at containment directly reflect the measures of the carcasses.
Appears in Collections:DZO - Artigos publicados em periódicos

Files in This Item:
File Description SizeFormat 
ARTIGO_Performance and carcass characteristics of lambs fed diets with fat and vitamin E.pdf71,09 kBAdobe PDFView/Open

This item is licensed under a Creative Commons License Creative Commons