Intake, performance and estimated methane production of Nellore steers fed soybean grain

Revista Brasileira de Zootecnia

Canesin, Roberta Carrilho²  Fiorentini, Giovani²  Berchielli, Telma Teresinha²  Messana, Juliana Duarte²  Reis, Ricardo Andrade²  Arcuri, Pedro Braga¹ 

[1] Centro Nacional de Pesquisa de Gado de Leite, Juiz de Fora, Brasil;Universidade Estadual Paulista, Jaboticabal, Brasil

关键词: carcass yield;    fat thickness;    greenhouse gases;    lipids;    loin eye area;    weight gain;   

DOI  :  10.1590/S1516-35982014001200006

学科分类：兽医学

来源: Universidade Federal de Vicosa

【 摘 要 】

The objective of this study was to evaluate nutrient intake, performance, estimated methane production and carcass characteristics of steers fed diets containing three different levels of soybean grain: 0, 120 and 230 g/kg on the dry matter (DM). The study was conducted on eighteen castrated Nellore males with an average initial body weight (BW) of 370±12 kg in a completely randomized design, with three treatments and six repetitions. Intake of dry matter (DMI, kg/day) and crude protein tended to decrease linearly, and the intake of ether extract increased linearly in response to the soybean grain levels in the diet. Levels of soybean grain in the diet did not affect DMI (g/kg of BW), final average weight, average daily weight gain, feed efficiency and estimated methane production. Animals fed diets with different levels of soybean grain were not different with respect to carcass yield, loin eye area, subcutaneous fat thickness, or bone, muscle and fat ratios. Carcass characteristics and meat quality were also not significantly different. Replacement of soybean meal by soybean grain in the diet alters the intake of crude protein and ether extract but does not affect performance, estimates of methane production, or carcass characteristics of feedlot Nellore.

【 授权许可】

Unknown