Performance and Carcass Characteristics of Cows of Different Genetic Groups, Submitted to Energetic Supplementation Levels on Winter Cultivated Pasture

Revista Brasileira de Zootecnia

Oliveira, André Nunes de³  Restle, João¹  Vaz, Fabiano Nunes²  Cerdótes, Liliane³  Roso, Cledson²  Menezes, Luis Fernando Glasenapp de³ 

[1] Universidade Federal de Santa Maria, Santa Maria;Progepec Cons. Associados Ltda.;Universidade Federal de Santa Maria

关键词: Avena strigosa;    cull cows;    Charolais;    dressing percentage;    fat thickness;    Lolium multiflorum;    Nellore;    sorghum     IntroduçãoA pastagem cultivada de estação fria a base de aveia preta (Avena strigosa) + azevém (Lolium multiflorum) é a principal alternativa de alimentação utilizada na região Sul do País para a terminação de bovinos na entressafra;   

DOI  :  10.1590/S1516-35982001000700019

学科分类：兽医学

来源: Universidade Federal de Vicosa

【 摘 要 】

- The objective of this work was to evaluate different levels of enegetic supplementation, in the form of grounded sorghum for finishing of cull cows from different genotypes of Charolais (C) x Nellore (N), kept on cultivated pasture during the last half of the vegetative cycle. Thirty C, N, 3/4 C + 1/4 N (CN) and 3/4 N + 1/4 C (NC) beef cows, kept on cultivated pasture of oats (Avena strigosa) + ryegrass (Lolium multiflorum) were allotted in three supplementation levels: .0, .4 or .8% of live weight. In the study of the genetic group effect, it was observed that the average daily gain was 1.03, 1.06, 1.36 and 1.02 kg, respectively, for C, N, CN and NC. Final live weigth was 453, 412, 515 and 478kg, respectively. The gain in body condition during the finishing was higher for the N cows (1.81 points) than for the C (1.09 points) and CN ( .99 points), while the NC cows showed an intermediate value (1.42 points). Carcasses from C cows showed higher weight, better conformation and Longissimus dorsi area than from the N, while the last ones, showed higher bone percentage in the carcass. Between the crossbreds, the CN meat exhibited brighter color than the NC. With relation to the supplementation level, the average daily gain was .92, 1.23 and 1.20 kg, respectively, for .0, .4 and .8%.

【 授权许可】

CC BY-NC