Scientia Agricultura Sinica ›› 2016, Vol. 49 ›› Issue (12): 2430-2436.doi: 10.3864/j.issn.0578-1752.2016.12.018

• RESEARCH NOTES • Previous Articles     Next Articles

Effect of Cage Type on Slaughter Performance and Meat Quality Change During Postmortem Aging of Meat Rabbit

ZHOU Qin-fei1,2, HE Zhi-fei1, LI Hong-jun1   

  1. 1College of Food Science, Southwest University, Chongqing 400715
    2Department of Animal Science, Southwest University Rongchang Campus, Chongqing 402460
  • Received:2015-10-30 Online:2016-06-16 Published:2016-06-16

Abstract: 【Objective】 Aimed to provide reference for the selecting of meat rabbit breeding pens construction and meat consumption, the carcass traits and meat quality changing during postmortem aging of meat rabbit that reared in monolayer large cage and three layer cage were detected in the study. 【Method】 10 California rabbits (half male and half female) , reared in the same building, 70 days, health and the weight close to the average population, in each monolayer large cage and three layer cage were selected and slaughtered as the rabbit slaughtering methods, then the slaughter performance and the pH value, color, shear force, cooking loss and water loss of muscle during postmortem aging were determined. 【ResultThe influence of two kinds of cages on the slaughter weight was not significant. Compared to the monolayer large cage, rabbits reared in the three layer cage had a significant decrease in fore part and increase in hind part ratio of eviscerated carcass (P<0.05), a significant decrease in abdominal fat ratio (P<0.01), and a significant decrease in the eviscerated and semi-eviscerated (P<0.05). Liver weight and kidney weight were higher in the three layer cage reared rabbits. Femur weight, tibia weight and muscle ratio of hind leg were higher in monolayer large cage reared rabbits. The time of maximum muscle L * value during postmortem aging of the three layer cage reared rabbits was at the 2nd day, and the monolayer large cage reared rabbits was at the 3rd day. The muscle L* value of the three layer cage reared rabbits at the 6th day was significantly higher than the monolayer large cage (P<0.05), and very significantly higher at the 7th day (P<0.01), but it was lower at 3 days before. The muscle a* value during postmortem aging of monolayer large cage reared rabbits was significantly higher than the three layer cage at the 2nd day, 3rd day and 5th day (P<0.05), and it was very significantly higher at the 4th day (P<0.01). The muscle b* value during postmortem aging of the three layer cage reared rabbits was higher than the monolayer large cage, and it was very significantly higher at the 1st day (P<0.01). The muscle pH value during postmortem aging of the three layer cage reared rabbits was higher than the monolayer large cage at the 3 days before, and lower after 3 days. The monolayer large cage reared rabbits had a significantly higher muscle shear force at the 1st and 3rd day during postmortem aging compared to the three layer cage (P<0.05), and very significant at the 2nd day (P<0.01), but lower after the 4th day. The three layer cage reared rabbits had a higher cooking loss compared to monolayer large cage reared rabbits during the postmortem aging. And the water loss index changing during the postmortem aging was in agreement with cooking loss. 【Conclusion】 Monolayer large cages can change the distribution of muscle in the rabbit carcass , and have a positive effect on meat quality compared to the three layer cage.

Key words: meat rabbit, cage type, slaughter performance, meat quality change

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