Comparative Study on Meat Quality Characteristics of Three-Way Hybrid Sheep Charolais × Duper × Hu and Charolais × Australian White × Hu and Hu Sheep
The aim of this experiment was to compare the meat quality characteristics of three-way hybrid sheep Charolais × Duper× Hu(CDH)and Charolais×Australian white×Hu(CAH)and Hu sheep.Healthy male lambs with similar birth weight((3.61±0.65)kg)were selected and followed by mothers until 45 days,followed by intensive weaning.The weaned lambs were then divided into 3 treatment groups(Hu,CAH and CAH groups)with 15 lambs in each treatment.In addition,a total of 45 lambs from 3 treatments were mixed fed until 6 months of age for slaughter.Subsequently,the tissue morphology,meat quality and nutritional composition of longissimus dorsi were analyzed.During the experiment period,the whole mixed basal diet was fed.The results showed as follows:1)Compared with Hu sheep,longissimus dorsi muscle L*was significantly decreased,and cooked meat rate was significantly increased(P＜0.05),but there was no significant difference in longissimus dorsi muscle pH,shear force,water loss rate,a*and b*in three-way hybrid sheep(P＞0.05).2)Compared with Hu sheep,the muscle fiber diameter and average muscle fiber area of longissimus dorsi muscle of three-way hybrid sheep were significantly increased,while the number and density of muscle fibers were significantly decreased(P＜0.05).3)Compared with Hu sheep,the contents of crude protein,essential and non-essential amino acids in longissimus dorsi muscle of ternary hybrid sheep were significantly increased(P＜0.05),but the contents of total saturated fatty acids,unsaturated fatty acids and trace elements(Cu,Fe,Zn and Mn)were not significantly affected(P＞0.05).4)There were no significant differences in pH,shear force,water loss rate,cooked meat rate,meat color,muscle fiber quantity,muscle fiber area,muscle fiber density,conventional nutrients(moisture,crude protein,crude fat,crude ash),trace elements(Cu,Fe,Zn and Mn),essential and non-essential amino acids contents,and total saturated and unsaturated fatty acids contents in longissimus dorsi muscle between CAH and CDH(P＞0.05).In conclusion,there was no significant difference in meat quality between the hybrid offspring of the same terminal father.Interestingly,three-way hybrid sheep can significantly improve meat quality,increase crude protein and amino acid levels in longissimus dorsi muscle,and have the potential to breed and produce high-quality mutton.
国家科技期刊平台
NSTL
万方数据
维普
