摘要
试验选用36只零日龄云南屏边大围山微型鸡进行为期14周饲养试验,对相关的种质特性进行了测定。从体形和毛色来看大围山微型鸡具有典型东南亚原鸡的外表特征。14周龄公母鸡体重分别为778.81 g和712.50 g;母鸡的胸宽、胸肌率、脂肪重和脂肪率显著地比公鸡的高(P<0.05),公鸡体尺和屠宰的其它指标均显著地比母鸡高(P<0.05)。公母鸡屠宰率平均分别为88.23%及90.23%,全净膛率平均分别为66.16%及59.58%。母鸡有较高的法氏囊、胸腺重量及其指数。大围山微型鸡的生长速度比其它生态类型鸡种较慢,均属于目前所报道的我国地方鸡种中体重较轻的地方鸡种。尽管大围山微型鸡的体重较小,但从屠宰性能指标显示,该鸡具有较高的屠宰率。
Thirty-six Yunnan Pingbian Daweishan mini chickens were used to investigate the growth performance, body size, body composition and germplasm characteristic, and compared with different ecological types of other chickens. The mini chickens possess the feature with the red jungle fowl （ Gllus gallus）. The weights of cock and hen were 778.81 g and 712. 50 g, respectively, at the age of 14 weeks. The chest width, breast muscle and fat weigh, fat percentage in hens were significantly higher than those in the cocks （ P 〈 0. 05） and converse observations for the other parameters of body size and carcass composition （P 〈0. 05）. The dressing percentage was 88.23% and 90. 23%, respectively, for cocks and hens while eviscerated weight percentage were 66. 16% and 59. 58%, respectively, for cocks and hens. The hens had high bursa of fabricius weight and thymic weight. Compared with the Chinese native chickens at the same age, the fowl showed the lowest growth performance, body weight and size. The body length, shank length, shank girth, chest width and depth, thoraco-bone angle and keel length of Daweishan mini chickens were the lowest, compared with the Chinese native chickens at same age as well, which showed typical example characteristic of Daweishan mini chickens in tropical and subtropical zone. Even though the chicken showed a low body weight, they had high dressing percentage.
出处
《云南农业大学学报（自然科学版）》
CAS
CSCD
北大核心
2011年第1期48-53,63,共7页
Journal of Yunnan Agricultural University:Natural Science
基金
云南省中青年学术带头人后备人才(2008PY043)
云南省自然基金项目(2009CD060)
关键词
大围山微型鸡
种质特性
体尺
屠宰性能
Daweishan mini chicken
germplasm characteristic
body measurement
slaughter characteristics
