Molecular Nutrition

Effects of Free Range Density on Growth Performance, Blood Physiological and Biochemical Indices and Meat Quality of Rabbits

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  • 1. Institute of Animal Husbandry & Veterinary, Shanxi Academy of Agricultural Sciences, Taiyuan 030032, China;
    2. Yunhai Foreign Trade Meat Co., Ltd., Changzhi 046000, China

Received date: 2018-09-26

  Online published: 2019-04-16

Abstract

This experiment was conducted to study the effects of free range density on growth performance, blood physiological and biochemical indices and meat quality of rabbits. A single-factor experiment design was adopted, a total of 126 healthy weaning Hyla rabbits with similar body weight were randomly divided into 3 groups, the free range density of group Ⅰ was 7 rabbits/m2, with 49 rabbits; the free range density of group Ⅱ was 6 rabbits/m2, with 42 rabbits; the free range density of group Ⅲ was 5 rabbits/m2, with 35 rabbits. Every group was fed the same experimental diet, the pre-experimental period lasted for 5 days, and the experimental period lasted for 45 days. The results showed that there were no significant differences in growth performance, blood physiological and biochemical indices, immune organ indices and slaughter performance of rabbits among all groups (P>0.05). The pH of rabbit meat in group Ⅰ was significantly lower than that of group Ⅱ (P<0.01), and the shear force of rabbit meat in group Ⅰ was significantly lower than that of group Ⅱ (P<0.05). There were no significant differences in hardness, chewiness, gumminess, springiness and chemical indices of rabbit meat among all groups (P>0.05). The content of cystine of rabbit meat in group Ⅲ was significantly lower than that of groups Ⅰ and Ⅱ (P<0.01), the content of proline of rabbit meat in group Ⅰ was significantly lower than that of groups Ⅱ and Ⅲ (P<0.05), and the content of tyrosine of rabbit meat in group Ⅲ was significantly lower than that of groups Ⅰ and Ⅱ (P<0.05). The economic benefits of group Ⅰ was the highest. In conclusion, the welfare free range system can not only provide living space which can fully express the life habits for rabbits, but also can improve the economic benefits, and the effects of 7 rabbits/m2 free range density is the best.

Cite this article

FENG Guoliang, REN Keliang, ZHENG Jianting, CAO Liang, LI Yanping, NIU Xiaoyan, QIN Guangming, HAN Junni, TANG Yaoping . Effects of Free Range Density on Growth Performance, Blood Physiological and Biochemical Indices and Meat Quality of Rabbits[J]. Chinese Journal of Animal Nutrition, 2019 , 31(4) : 1695 -1703 . DOI: 10.3969/j.issn.1006-267x.2019.04.027

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