中山麻鸭F7及其子代生长、屠宰性能和蛋品质的评价

Evaluation of Performance,Carcass Characteristics,and Egg Quality of Zhongshan Duck F7 and Offspring

本试验旨在研究中山麻鸭F7代及其子代生长性能、屠宰性能和蛋品质的差异,以此评价中山麻鸭F7代和其子代的品质优势。试验选取中山麻鸭F7和其子代各250只,随机分为两组,每组10个重复,每个重复25只鸭。10周龄时,每个重复随机挑选公母各2只进行屠宰,测定其体尺性状和屠宰性能。24周龄后,每个重复选取3枚鸭蛋测定其孵化性能,43周龄,每个重复选取3枚鸭蛋测定其蛋品质。结果表明:1)中山麻鸭F7代和其子代的体重于10周龄进入平台期。中山麻鸭F7代的胫围及体斜长显著低于子代,颈长及胸宽显著高于子代(P<0.05)。中山麻鸭F7代和其子代的生长性能无显著性差异(P>0.05)。2)中山麻鸭F7代的屠宰率、半净膛率、全净膛率、腿肌率和瘦肉率显著高于其子代(P<0.05)。3)中山麻鸭F7代的蛋壳厚度、蛋壳强度和蛋黄色泽显著低于其子代(P<0.05)。此外,中山麻鸭F7代的蛋重有低于其子代的趋势(P<0.10)。综上,中山麻鸭F7代和子代的体重于10周龄进入平台期,F7代的屠宰性能显著优于其子代,但其蛋品质显著差于其子代。

The purpose of this experiment was to study the differences in growth performance,slaughtering performance and egg quality between the F7 generation of Zhongshan ducks and their offspring,so as to evaluate the quality advantages of the F7 generation of Zhongshan ducks and their offspring.Two hundred and fifty Zhongshan ducks F7 and their offspring were randomly divided into two groups of 10 replicates of 25 ducks each.at 10 weeks of age,two males and two females were randomly selected from each replicate for the determination of body measurements and slaughter performance.at 24 weeks of age,3 eggs were selected from each replicate for the determination of hatchability,and at 43 weeks of age,3 eggs were selected from each replicate for the determination of egg quality.The results showed that:1)the body weights of Zhongshan duck F7 and its offspring entered the plateau stage at 10 weeks of age;the tibial circumference and body slope length of Zhongshan duck F7 were significantly lower than those of its offspring,and the neck length and breast width were significantly higher than those of its offspring;there was no significant difference in the growth performance of Zhongshan duck F7 and its offspring(P>0.05).2)The slaughtering rate,halfclearance rate,full⁃clearance rate,leg muscle rate and lean rate of Zhongshan duck F7 were significantly higher than those of its offspring(P<0.05).3)The meat quality and slaughtering performance of Zhongshan duck F7 and its offspring were determined at the same time,and the meat quality of its offspring was determined at the same time.higher than that of its offspring(P<0.05).3)The eggshell thickness,eggshell strength and yolk color of Zhongshan mallard F7 generation were significantly lower than that of its offspring(P<0.05).In addition,the egg weight of Zhongshan duck F7 generation had a tendency to be lower than that of its offspring(P<0.10).In summary,the body weights of Zhongshan duck F7 generation and its offspring entered the plateau stage at 10 weeks of age.The slaughtering performance of the F7 generation was significantly better than that of its offspring,but the egg quality of the F7 generation was significantly worse than that of its offspring.