复方中草药制剂对肉鸡肌肉发育和肉品质的影响

The effect of compound Chinese herbal preparation on muscle development and meat quality of broiler

为了研究由白术、茯苓、甘草等组成的复方中草药制剂对肉鸡肌肉发育及肉品质的影响。将1日龄健康AA肉鸡1 200羽随机分为对照组、试验Ⅰ组、Ⅱ组和Ⅲ组,每组5个重复,每个重复60羽。对照组饲喂基础日粮,试验Ⅰ组、Ⅱ组和Ⅲ组分别在基础日粮中添加0.5%、1.0%和1.5%复方中草药制剂,试验期42 d。结果显示,在21日龄时,试验Ⅱ组肉鸡腿肌滴水损失率、剪切值及L*和b*值均显著低于对照组(P<0.05),胸肌a*值显著高于对照组(P<0.05);试验Ⅲ组肉鸡腿肌剪切值也显著低于对照组(P<0.05)。42日龄时,试验Ⅱ组肉鸡的胸肌率、胸肌a*值以及胸肌和腿肌系水力均显著高于对照组(P<0.05),胸肌和腿肌肌纤维直径、滴水损失率、蒸煮损失率及腿肌剪切值均显著低于对照组(P<0.05);试验Ⅲ组肉鸡胸肌率、胸肌a*值和腿肌系水力也显著高于对照组(P<0.05),胸肌和腿肌肌纤维直径、腿肌滴水损失率及胸肌蒸煮损失率和剪切值均显著低于对照组(P<0.05)。显微观察可见,21日龄和42日龄时,试验Ⅱ组和Ⅲ组肉鸡胸肌和腿肌组织结构清晰,肌纤维数量增多、排列紧密,肌纤维横断面较小。结果表明,日粮中添加1.0%和1.5%的复方中草药制剂均能够促进肉鸡胸肌的生长发育,改善胸肌和腿肌的肌肉品质,其中以添加1.0%复方中草药制剂效果更好。

To study the effect of compound Chinese herbal preparation composed of Atractylodes,Poria cocos and Liquorice on the muscle development and meat quality of broilers,1200one-day-old Arbor Acres broilers(A A broilers)were randomly divided into control group and experimental groups I,II and III,each group included five replications(60birds per replication).Control group was fed with basal diet and experimental groups I,II and III were fed with the basal diet supplemented with0.5%,1.0%and1.5%compound Chinese herbal preparation,respectively,for42d.Results showed:at21days of age,the drip loss,shear force,L*and b*value of thigh muscle in experimental group II were significantly decreased compared with those in control group(P<0.05),the breast muscle a*vaule was significantly increased compared with that in control group(P<0.05).The shear force of thigh muscle in experimental group III was also significantly decreased compared with that in control group(P<0.05).At42days of age,organ index and a*value of breast muscle and water holding capacity of breast muscle and thigh muscle in experimental group II were significantly increased compared with those in control group(P<0.05),and the muscle fiber diameter,drip loss,cooking loss,shear force of breast muscle and thigh muscle in experimental group II were significantly decreased compared with those in control group(P<0.05).Organ index and a*value of breast muscle and water holding capacity of thigh muscle in experimental group III were also significantly increased compared with those in control group(P<0.05),drip loss of thigh muscle,cooking loss and shear force of breast muscle,and muscle fiber diameter of breast muscle and thigh muscle were significantly decreased compared with those in control group(P<0.05).Microscopic observation results had also showed:at21and42days of age,the microstructure of breast mucsle and thigh muscle were clear,and the number of muscle fiber was increased with close arrangement,and the cross-sectional area of muscle fiber was decreased compared with that in control group.The results indicated that supplementation of1.0%and1.5%compound Chinese herbal preparation could promote the growth and development of muscle and improve meat quality of breast muscle and thigh muscle in the broilers,and the supplementation of1.0%compound Chinese herbal preparation had the best effect.