玉米不同加工方式对肉牛育肥性能的影响

Abstract

Abstract: 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 performance 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.

Key words: corn; processing methods; fattening steers; production performance; carcass character

CLC Number:

S816.4

WAN Fa-chun, WANG Wen-juan, LIU Xiao-mu, SONG En-liang, FU Ying, LIU Gui-fen, TAN Xiu-wen, CHENG Hai-jian. Effect of Different Processing Methods of Corn on Performance of Finishing Steers[J]. , 2012, 39(6): 113-116.

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Effect of Different Processing Methods of Corn on Performance of Finishing Steers

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