Characteristics of carcass and meat of heifers finished on pasture amended with different supplement frequency and soybean oil source

Autor(es)

Santana, Marcia C. A. ^[1] ; Messana, Juliana D. ^{[1, 2]} ; Fiorentini, Giovani ^[1] ; Lage, Josiane F. ^[1] ; Dian, Paulo H. M. ^[1] ; Canesin, Roberta C. ^[1] ; Reis, Ricardo A. ^{[1, 2]} ; Berchielli, Telma T. ^{[1, 2]}

Afiliação do(s) autor(es)

^[1] Sao Paulo State Univ Unesp, Dept Anim Sci, Sch Agr & Vet Sci, BR-14884900 Jaboticabal, SP - Brazil

^[2] Univ Fed Vicosa, CA, INCT, Dept Anim Sci, BR-36570000 Vicosa, MG - Brazil

• Tipo de documento: Artigo Científico
• Fonte: CANADIAN JOURNAL OF ANIMAL SCIENCE; v. 98, n. 1, p. 32-43, MAR 2018.
• Citações Web of Science: 0

Resumo

Our objective was to investigate the effects of supplements with soybean oil source, administered either daily or three times per week, on meat quality and carcass characteristics of heifers finished on pasture. Forty-two crossbred heifers aged 17 +/- 3 mo with an initial mean body weight (BW) of 297.1 +/- 13.5 kg were selected for pasture finishing. The animals were randomly assigned to six treatments. Each treatment consisted of two feeding frequencies, daily (DAI; seven times per week, supplemented at 0.75% BW) or alternating (MWF; three times per week, on Monday, Wednesday, and Friday, supplemented at 1.75% BW on each day), and three different soybean oil sources: soybean oil (SO), rumen-protected fat (RPF), and whole soybean (WS). There was no interaction (P > 0.05) between the feeding frequencies and soybean oil source on meat quality and carcass characteristics. Supplements with WS resulted in a greater C18:0 concentration in the longissimus muscle compared with those with SO or RPF (P = 0.02). Supplements with SO increased the rumenic acid deposition, the total monounsaturated fatty acids, and the monounsaturated: saturated fatty acids ratio (P < 0.05). We conclude that reduction in the supplementation frequency does not alter the carcass and meat quality traits. (AU)

• Processo FAPESP: 07/53733-4 - Avaliação de fontes lipídicas na terminação de novilhas mestiças em pastejo e confinamento
• Beneficiário: Telma Teresinha Berchielli
• Linha de fomento: Auxílio à Pesquisa - Regular
• Processo FAPESP: 13/02418-2 - Estudo meta-analítico das respostas da adição de fontes lipídicas na qualidade da carne de bovinos de corte terminados em pasto ou confinamento
• Beneficiário: Giovani Fiorentini
• Linha de fomento: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 14/09033-1 - Meta-análise dos efeitos de dietas com lipídios, glicerina e da associação de ambos na fermentação ruminal e eficiência alimentar de bovinos de corte em pasto ou confinamento
• Beneficiário: Juliana Duarte Messana
• Linha de fomento: Bolsas no Brasil - Pós-Doutorado