Analysis on Growth,Slaughtering,Blood Physiological Indexes,Meat and Egg Quality Traits of Different Crossbreeding Combinations of Tibetan Chicken
To investigate the crossbreeding improvement effect of New Pudong chicken on Tibetan chicken,the experiments constructed a reciprocal crossing populations(ZX,XZ)by crossing Tibetan chicken(ZJ)and New Pudong chicken(XPD),which were reared under the same environment.The growth performance,slaughtering performance,blood physiological indexes,egg and meat quality traits of the chickens were determined.The results were as follows:In terms of growth and slaughtering performance shape,body weight of the reciprocal crosses was significantly increased compared to that of ZJ between 0 to 16 weeks of age(P<0.05).Shank length,shank circumference,dressed weight,half-eviscerated with giblet weight,eviscerated weight,breast muscle weight and thigh muscle weight were significantly higher in the reciprocal crosses at 120 days of age(P<0.05),and the improvement of these traits was greater in ZX than that in XZ.The abdominal fat of ZX hens was significantly increased while the fat bandwidth showed a significant hybrid vigor(P<0.05).In terms of blood physiological index shape,the average erythrocyte hemoglobin content and average erythrocyte hemoglobin concentration were significantly higher in the reciprocal crosses(P<0.05).The total unsaturated fatty acids and total saturated fatty acids in XZ were significantly increased(P<0.05).In terms of meat quality shape,in comparison with ZJ,intramuscular fat in the breast muscle was significantly higher than that in the reciprocal crosses(P<0.05).In terms of egg quality shape,the average laying rate,egg weight,albumen height,yolk weight,and eggshell weight of the reciprocal crosses were significantly higher than that of ZJ at 300 days of age(P<0.05).The results indicated that crossing ZJ with XPD could improve the growth,slaughtering performance,egg production,egg quality,breast muscle quality and unsaturated fatty acid content,and the improvement by crossing between Tibetan chicken as the paternal line and New Pudong chicken as the maternal line was better in most traits.
Tibetan chickenimprovement of crossbreedingbody size traitsslaughtering performancemeat quality traitsegg production performanceblood physiological index
NETL
NSTL
万方数据
