title: Production and quality of beef from young bulls fed diets supplemented with peanut cake.
abstract: Peanut cake is a biodiesel byproduct that has been tested as an alternative feed additive for use in cattle production. This study aimed to assess the importance of dietary peanut cake inclusion for young bull growth rate, beef production, and beef quality. In total, 32 Nellore young bulls individually housed in stalls with a mean initial body weight of 390±43.5kg were distributed in a completely randomized design for the experiment. The animals were fed Tifton 85 hay and one of four concentrate mixtures with 0, 33, 66 or 100% peanut cake instead of soybean meal. There was a linear reduction (P<0.05) in the slaughter weight and hot carcass weight and a quadratic effect (P<0.05) on the beef texture. No alterations occurred in the physicochemical characteristics of the longissimus thoracis; however, changes were observed (P<0.05) in the longissimus thoracis fatty acid profile. The replacement of soybean meal with peanut cake at levels up to 100% in the diet of feedlot-finished young bulls promotes a beneficial increase in the levels of PUFAs and the following nutraceutical compounds: conjugated linoleic acid (CLA) and Ω3 and Ω6 fatty acids.
authors.affiliation: Postgraduate Studies in Animal Science, State University of Southwest Bahia, Brazil. Electronic address: brauliorochacorreia@hotmail.com.
authors.forename: B R
authors.initials: BR
authors.lastname: Correia
authors.affiliation: Federal University of Bahia, Brazil.
authors.forename: G G P
authors.initials: GG
authors.lastname: Carvalho
authors.affiliation: Federal University of Bahia, Brazil.
authors.forename: R L
authors.initials: RL
authors.lastname: Oliveira
authors.affiliation: State University of Southeast Bahia, Brazil.
authors.forename: A J V
authors.initials: AJ
authors.lastname: Pires
authors.affiliation: Federal University of Bahia, Brazil.
authors.forename: O L
authors.initials: OL
authors.lastname: Ribeiro
authors.affiliation: State University of Southeast Bahia, Brazil.
authors.forename: R R
authors.initials: RR
authors.lastname: Silva
authors.affiliation: Federal University of Mato Grosso, Brazil.
authors.forename: A G
authors.initials: AG
authors.lastname: Leão
authors.affiliation: Federal Technological University of Paraná, Brazil.
authors.forename: J I
authors.initials: JI
authors.lastname: Simionato
authors.affiliation: Federal University of Minas Gerais, Brazil.
authors.forename: B M A
authors.initials: BM
authors.lastname: Carvalho
mesh_terms: D000821:Animal Feed / Q000032:analysis*; D000824:Animal Nutritional Physiological Phenomena; D000818:Animals; D010367:Arachis / Q000737:chemistry*; D002417:Cattle; D055598:Chemical Phenomena; D004032:Diet / Q000662:veterinary*; D005231:Fatty Acids, Unsaturated / Q000032:analysis; D063427:Food Quality; D044243:Linoleic Acids, Conjugated / Q000032:analysis; D008297:Male; D018482:Muscle, Skeletal / Q000737:chemistry; D000069466:Red Meat / Q000032:analysis*; D013025:Glycine max / Q000737:chemistry
chemical_list: D005231:Fatty Acids, Unsaturated; D044243:Linoleic Acids, Conjugated
keywords: Arachis hypogaea; Beef cattle; CLA; Ω3; Ω6