不同屠宰体重对苏山猪屠宰性能、胴体性状和肉品质的影响

doi:10.16431/j.cnki.1671-7236.2019.12.024

Abstract

Abstract: This experiment was conducted to investigate the effects of different slaughter weights on slaughter performance,carcass traits and meat quality of Sushan pigs,so as to determine the optimal slaughter weights of Sushan pigs.60 Sushan pigs,with 30 kg of average body weight and similar body conditions,were selected and randomly assigned to three groups (A,B and C),and there were 20 pigs in each group.When the body weight reached about 90,100 and 110 kg respectively,three boars and three sows in each group were slaughtered.The results showed:With the increase of slaughter weights of Sushan pigs,there were significant differences in slaughter performance among groups.The lean meat rate of group A was 63.18%,which was significantly higher than that of groups B and C (P<0.05).The fat content,the fat thickness of shoulder thickness,and the backfat thickness of reciprocal 3-4 rib of group C were significantly higher than those of group A (P<0.05).The slaughter rate,skin rate and bone ratio had no significant difference in three treatment groups.There was no significant difference in water content,crude protein and crude fat of longissimus dorsi among the three groups (P>0.05),but the crude ash content of group A was significantly higher than that of groups B and C (P<0.05).The L value of group B was 43.50,significantly higher than that of group C (P<0.05),the pH_{1 h} and pH_{24 h} values of group C were 6.40 and 5.83 respectively,it was higher than groups A and B (P<0.05 or P<0.01).With the increase of slaughter weight,saturated fatty acids and monounsaturated fatty acids showed an upward trend,polyunsaturated fatty acids showed a downward trend,and saturated fatty acids in group C were significantly higher than those in group A (P<0.05).Total amino acids,essential amino acids and flavor amino acids in group A were higher than those in group B and C,but the difference was not significant (P>0.05).Therefore,considering the results of this experiment,the best slaughter weights of Sushan pigs were about 90 kg.

Key words: Sushan pigs; slaughter weights; slaughter performance; carcass traits; meat quality

CLC Number:

S828

LI Bixia, ZHAO Weimin, FU Yanfeng, ZHOU Lisheng, WANG Li, REN Shouwen, FANG Xiaomin, WANG Xuemin. Effects of Different Slaughter Weights on Slaughter Performance, Carcass Traits and Meat Quality in Sushan Pigs[J]. China Animal Husbandry and Veterinary Medicine, 2019, 46(12): 3659-3665.

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Effects of Different Slaughter Weights on Slaughter Performance, Carcass Traits and Meat Quality in Sushan Pigs

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