【摘要】 肉鸡生产过程中腹脂过度沉积会造成生产效率下降等一系列问题。林甸鸡作为优质地方鸡种之一，产蛋、产肉性能优良，肉质鲜美，深受大众喜爱。为探究林甸鸡腹部脂肪组织发育规律，测定林甸鸡3～22周龄体重及腹脂重，观察并统计腹部脂肪细胞大小和数量，分析脂肪细胞特性与腹脂沉积之间关系。结果表明，林甸鸡在3～22周龄体重持续增长，腹脂重先升后降再升，腹脂率先降后升；3～10周龄脂肪细胞以增生为主，10～14周龄脂肪细胞以增大占优，19周龄后脂肪细胞增大和增生同时进行，但以增大为主。研究初步确定腹脂重与脂肪细胞特性回归模型，发现脂肪细胞体积对腹脂重的影响最大。试验结果为选育优质特色林甸鸡新品系提供理论参考。更多还原

【Abstract】 In the production of broiler chickens, excessive deposition of abdominal fat can lead to series of problems such as decreased production efficiency. As one of the high-quality native chicken breeds, Lindian chickens due to excellent egg and meat production performance, delicious meat are deeply popular by the public. To explore the developmental characteristics of abdominal fat tissue of Lindian chickens, the body weight and abdominal fat weight of Lindian chickens at 3-22 weeks were measured, the size and quantity of abdominal adipocytes were observed and counted, and the relationship between adipocyte characteristics and abdominal fat deposition was analyzed in present study. The results showed that the weight of Lindian chickens continued to increase from 3 to 22 weeks,and the abdominal fat weight first increased, then decreased, and strengthened again. The abdominal fat percentage first decreased and then increased. At 3-10 weeks, adipocytes were proliferatted, while at10-14 weeks, adipocyte enlargement dominated. After 19 weeks, both adipocyte enlargement and proliferation occurred simultaneously, but mainly enlargement. In addition, a regression model between abdominal fat weight and adipocyte characteristics was preliminarily determined in this study, and it was found that adipocyte volume had the better impact on abdominal fat weight. These results would provide theoretical references for the breeding of high-quality and distinctive new strains of Lindian chicken.更多还原