Suppr超能文献

全程饲养荷斯坦公牛。

Feeding Holstein steers from start to finish.

作者信息

Duff Glenn C, McMurphy Casey P

机构信息

Department of Animal Sciences, College of Agriculture and Life Sciences, The University of Arizona, Tucson, AZ 85721-0038, USA.

出版信息

Vet Clin North Am Food Anim Pract. 2007 Jul;23(2):281-97, vii. doi: 10.1016/j.cvfa.2007.04.003.

Abstract

Holstein beef has become a significant segment of the feedlot industry. Holstein steers typically enter the feedlot at a lighter body weight, require more pen space per animal, and are in the feedlot for longer periods of time than beef breeds. The only real differences in carcass characteristics are the lower dressing percentage and the smaller rib eye area, which can be increased with anabolic implants and the use of beta-agonists. Holsteins are typically fed higher roughage concentrations. Fat concentrations can also be increased to offset the lower energy diets. Protein requirements do not appear to be different from beef cattle, although Holstein steers weighing from 300 to 700 lb should be fed plant protein sources (eg, soybean meal).

摘要

荷斯坦牛肉已成为饲养场行业的一个重要组成部分。荷斯坦公牛通常以较轻的体重进入饲养场,每头动物需要更多的围栏空间,并且在饲养场的停留时间比肉牛品种更长。胴体特征的唯一真正差异是屠宰率较低和肋眼面积较小,使用合成代谢植入物和β-激动剂可以增加这些指标。荷斯坦牛通常饲喂较高浓度的粗饲料。脂肪浓度也可以提高,以抵消低能量日粮的影响。蛋白质需求似乎与肉牛没有差异,不过体重在300至700磅之间的荷斯坦公牛应饲喂植物蛋白来源(如豆粕)。

文献检索

告别复杂PubMed语法,用中文像聊天一样搜索,搜遍4000万医学文献。AI智能推荐,让科研检索更轻松。

立即免费搜索

文件翻译

保留排版,准确专业,支持PDF/Word/PPT等文件格式,支持 12+语言互译。

免费翻译文档

深度研究

AI帮你快速写综述,25分钟生成高质量综述,智能提取关键信息,辅助科研写作。

立即免费体验