Department of Veterinary Science, University of Pisa, Viale delle Piagge 2, 56124 Pisa, Italy.
Meat Sci. 2013 Feb;93(2):162-6. doi: 10.1016/j.meatsci.2012.08.012. Epub 2012 Aug 21.
The effect of stocking density (16 rabbits/m(2), 5 rabbits/m(2), 2.5 rabbits/m(2), n = 60, Experiment 1) and group size (4 rabbits/cage, 8 rabbits/cage, 16 rabbits/cage, n = 88, Experiment 2) on productive performance, carcass and meat quality of a slow-growing rabbit population reared outdoors was investigated in two experiments. The highest stocking density induced the highest skin percentage. Lower stocking densities showed lower lightness of Biceps femoris and higher redness of Longissimus lumborum muscles. Four rabbits/cage group (Experiment 2) showed the highest daily weight gain and slaughter weight and the lowest skin percentage. The muscles of 16 rabbits/cage showed significantly higher pHu than 8 and 4 rabbits/cage. BF of 16 and 4 rabbits/cage showed higher L* value. Productive performance and meat quality of rabbits reared outdoors improved in low group size while stocking density needs more experiments. The best combination of density, group size and total available surface that showed the best production and carcass traits was of 5 rabbits/m(2), 4 rabbits/cage, and 0.8m(2).
在两个实验中,研究了饲养密度(16 只/平方米、5 只/平方米、2.5 只/平方米,n=60,实验 1)和群体大小(4 只/笼、8 只/笼、16 只/笼,n=88,实验 2)对户外生长的生长缓慢的兔群生产性能、胴体和肉质的影响。最高饲养密度导致皮肤比例最高。较低的饲养密度会使股二头肌的亮度降低,腰大肌的红色度增加。4 只/笼组(实验 2)的日增重和屠宰体重最高,皮肤比例最低。16 只/笼组的肌肉 pHu 显著高于 8 只和 4 只/笼组。16 只和 4 只/笼组的 BF 呈现出较高的 L*值。户外饲养的兔子的生产性能和肉质在较小的群体规模下有所提高,而饲养密度需要更多的实验。表现出最佳生产和胴体特性的最佳密度、群体大小和总可用表面积的组合为 5 只/平方米、4 只/笼和 0.8 平方米。