Key Laboratory of Animal Genetics and Breeding and Molecular Design of Jiangsu Province, Yangzhou University, Yangzhou, China.
Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education of China, Institutes of Agricultural Science and Technology Development, Yangzhou University, Yangzhou, China.
Anim Biotechnol. 2022 Nov;33(6):1322-1332. doi: 10.1080/10495398.2021.1898413. Epub 2021 Mar 22.
Totally, 315 42-day-old male Xueshan chickens were allocated into 3 caging densities, 14, 21 and 28 birds/m. Each treatment was represented by 5 replicates. The body weight (BW), slaughter performance, meat quality, behavioral assessment, and the cecal microorganisms were detected at the market age. The results showed that the BW of broilers in the low- and medium-density groups was significantly higher ( < 0.05) than that of the high-density group from the age of 10 weeks. Only the feather quality of the broilers in the low-density group improved significantly ( < 0.05) compared with those of the other two groups. And, the abdominal fat percentage and the fat content of thigh muscle of broilers in the low- and medium-density groups were higher ( < 0.05) than those in the high-density group. No significant difference ( > 0.05) was noted in the other traits. The abundance of some microbial like , and may be correlated with the BW and fat content of broilers. The findings of this study suggest that increasing the stocking density decreased the final BW, fat content and the feather quality, whereas no evidence was found that stocking density caused changes in other parameters.
总共将 315 只 42 日龄雄性雪山鸡分配到 3 种饲养密度，即 14、21 和 28 只/笼。每个处理由 5 个重复组成。在市场年龄时检测了体重（BW）、屠宰性能、肉质、行为评估和盲肠微生物。结果表明，从 10 周龄开始，低和中密度组肉鸡的 BW 显著高于高密度组（<0.05）。与其他两组相比，只有低密度组肉鸡的羽毛质量显著提高（<0.05）。此外，低和中密度组肉鸡的腹脂率和大腿肌脂肪含量高于高密度组（<0.05）。其他性状没有显著差异（>0.05）。一些微生物如 、 和 的丰度可能与肉鸡的 BW 和脂肪含量相关。本研究结果表明，增加饲养密度会降低肉鸡的最终 BW、脂肪含量和羽毛质量，但没有证据表明饲养密度会导致其他参数发生变化。
