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玉米不同加工方式对肉牛育肥性能的影响 被引量:9

Effect of Different Processing Methods of Corn on Performance of Finishing Steers
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摘要 本试验旨在探讨玉米加工利用的适宜方法,以提高玉米的利用效率。选用120头利木赞杂交阉牛(590kg±10kg),随机分为4组,分别饲喂蒸汽压片(A)、粉碎后过七目筛(B)、十目筛(C)和十四目筛(D)的玉米型日粮,研究日粮玉米不同加工方法对阉牛育肥性能的影响。结果表明,玉米不同加工方式对肉牛的生产性能和大多数胴体指标都没有显著影响(P>0.05)。蒸汽压片玉米组的胴体产肉率高于十目筛组,骨重低于十目筛组(P<0.05)。十四目筛组的高档肉块比例和上脑重显著高于其它3个处理组,牛柳重显著低于其它处理组,七目筛组西冷重高于十目筛组(P<0.05)。养殖效益则以十目筛组阉牛最高。 The objective of the study was to determine the effect of different processing methods of corn on performance and carcass characteristics of finishing steers. One hundred and twenty Limousin and Luxi crosscred steers (initial body weight =590 kg±10 kg) were randomly assigned to steam-flaked(A),crushed through 7 mesh sieve(B), crushed through 10 mesh sieve(C) and crushed through 14 mesh sieve(D) corn diets. To study the effect of different processing methods of corn on per- formance of finishing steers. The results showed that diets had no effect on body weight, daily gain, feed conversion efficiency, carcass weight, dressing percentage, net beef percentage, ratio of bone to meat, eye beef weight, marble score, thickness of back fat, and eye muscle area(P〉0.05). The steers that received A diet had the higher percentage of total carcass products and the lower bone weight than those on C(P〈0.05). The higher high-grade beef percentage and rib eye weight ,and the lowest tenderloin weight were recorded in steers fed with D diets compared to those that received A ,B and C diets(P〈0.05). The steers that received B diet had the higher sirloin than those on C(P〈0.05). The economic effectiveness was the best of steers fed with C diets compared to those that received A, B and C diets.
出处 《中国畜牧兽医》 CAS 北大核心 2012年第6期113-116,共4页 China Animal Husbandry & Veterinary Medicine
基金 国家肉牛牦牛产业技术体系 公益性行业农业科研专项经费课题(20090300608) 山东省农业重大应用技术创新课题“优质高档肉牛生产技术研究”
关键词 玉米 加工方式 育肥阉牛 生产性能 胴体特性 corn processing methods fattening steers production performance carcass character
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