早期鸡冠大小选择对屠宰型肉鸡鸡冠大小和生产性能的影响

发布时间：2019-05-21 19:47

【摘要】：试验通过对选育的屠宰型肉鸡专门化品系(A系和B系)早期(35日龄)大小鸡冠进行选择,比较饲养至性成熟(150日龄)时鸡冠大小和生产性能。结果表明:35和150日龄时A系鸡冠面积、鸡冠周长和鸡冠色度级别均显著高于B系(P0.05)。35日龄A、B系大鸡冠的鸡冠面积、鸡冠周长和鸡冠色度级别均大于小鸡冠(P0.05),而至性成熟(150日龄)时大小鸡冠间鸡冠大小、体重、体尺、屠宰性能和肉品质差异不显著(P0.05)。150日龄A系的活体重、屠体重、心脏重、肝脏重、单侧胸肌重、单侧腿肌重、单侧翅重、腹脂重、睾丸重、腺胃重、肌胃重、半净膛重和全净膛重均大于B系,但A系与B系的屠宰率、全净膛率、半净膛率、胸肌率、腿肌率和腹脂率差异不显著(P0.05)。A、B大小冠公鸡屠宰性能较好,屠宰率均超过90%,全净膛率均超过71%,半净膛率在77%~84%之间。A、B专门化品系公鸡的屠宰率、全净膛率、半净膛率、胸肌率、腿肌率和腹脂率差异不显著(P0.05)。
[Abstract]:The crown size and production performance of slaughtered broilers were selected in the early stage (35 days old) of slaughtered broilers (A and B lines), and the crown size and production performance were compared at 150 days of sexual maturity, and the results were as follows: (1) the crown size and production performance of slaughtered broilers were compared at the early stage (35 days of age). The results showed that the crown area, crown circumference and chromaticity grade of strain A at 35 and 150 days of age were significantly higher than those of line B (P 0.05). At 35 days of age, the crown area of strain B was significantly higher than that of strain B. The perimeter length and chromaticity grade of chicken crown were larger than those of chick crown (P 0.05), but at the time of sexual maturity (150 days old), the size, body weight and body size of chicken crown were larger than those of chick crown. There was no significant difference in slaughtering performance and meat quality (P 0.05). The live weight, butcher weight, heart weight, liver weight, unilateral breast muscle weight, unilateral leg muscle weight, unilateral wing weight, abdominal fat weight, testicular weight, adenogastric weight, muscle stomach weight, abdominal fat weight, testicular weight, adenogastric weight, muscle stomach weight, abdominal fat weight, testicular weight, adenogastric weight, muscle and stomach weight, The semi-clean bore weight and total net bore weight were higher than those of B series, but there were no significant differences in slaughter rate, total evisceration rate, semi-evisceration rate, breast muscle rate, leg muscle rate and abdominal fat rate between A and B lines (P 0.05). The slaughter performance of A, B crowned roosters was better. The slaughter rate was more than 90%, the total evisceration rate was more than 71%, and the semi-eviscerated rate was between 77% and 84%. The slaughter rate, total evisceration rate, semi-evisceration rate and breast muscle rate of A and B specialized roosters were more than 90%, 71% and 77%, respectively. There was no significant difference in leg muscle rate and abdominal fat rate (P 0.05).
【作者单位】：江苏省家禽科学研究所江苏省家禽遗传育种重点实验室;江苏立华牧业股份有限公司;
【基金】：江苏省重点研发计划(现代农业)(BE2015344) 江苏省农业科技自主创新资金(CX(15)1009) 国家自然科学基金项目(31402032;31572358) 江苏省六大人才高峰项目(2014-NY-004) 现代农业产业技术体系建设专项资金(CARS-42-G03) 江苏现代农业(肉鸡)产业技术体系集成创新中心(SXGC[2017]254)
【分类号】：S831

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