Abstract: Objective　The experiment aimed to analyze the effects of the two feeding modes on the breeding effect of SPF ducks by comparing the growth of body weight, body slant length, chest depth, chest width and keel length, so as to provide reference for the large-scale production of SPF ducks in the future.Methods　One hundred and twenty healthy 1-day-old SPF ducks were divided into 2 groups, with 3 replicates in each group and 20 ducks in each replicate. The first group was fed with isolator (internal air cleanliness level 5), which was referred to as isolated environment feeding group, and the second group was fed with open cage (placed in the feeding room with air cleanliness level 7), which was referred to as barrier environment feeding group, which was raised to 16 weeks of age. During the period, the growth index growth data of SPF ducks under the two method were measured and compared every 4 weeks.Results　During the brooding period (0-4 weeks), the growth of body weight and chest depth in the isolated environment feeding group was significantly higher than that in the open cage group (P< 0.01). The growth of body oblique length and chest width was significantly higher than that in the open cage group (P<0.05), while the growth of body weight, chest depth and chest width in the 4-8 weeks was significantly lower than that in the barrier environment feeding group (P<0.01). The growth of chest depth in the 8-12 weeks was significantly lower than that in the barrier environment feeding group (P< 0.01). The growth of body weight and body oblique length in the 12-16 weeks was significantly lower than that in the barrier environment feeding group (P<0.01). And the growth of chest depth and chest width was significantly lower than that in the barrier environment feeding group (P<0.05).Conclusion The growth performance of the isolated environment feeding group is better than that of the barrier environment feeding group in the brood period (0-4 weeks). And the growth performance of the barrier environment feeding group is better than that of the isolated environment feeding group in the adult period (4-16 weeks). 

Key words: SPF duck, feeding mode, growth properties

摘要： 目的　实验旨在通过对比体质量、体斜长、胸深、胸宽和龙骨长指标的增长情况,分析两种饲养模式对SPF鸭 育雏育成效的影响,为今后SPF鸭规模化生产提供参考依据。方法　将120只健康1日龄SPF母鸭分为两组,每 组设3个重复,每个重复20只,隔离环境饲养组(第一组)采用隔离器(内部空气洁净度5级)饲养方式,屏障环境 饲养组(第二组)采用开放式笼具(放置在空气洁净度7级的饲养室内)饲养方式,饲养至16周龄。期间每隔4周 测定并对比两种方式下SPF鸭的生长指标增长数据。结果　在育雏期(0~4周),隔离环境饲养组的体质量和胸深 增长极显著高于开放笼具组(P<0.01),体斜长和胸宽增长显著高于开放笼具组(P<0.05),而4~8周的体质量、胸 深、胸宽增长极显著低于屏障环境饲养组(P<0.01),8~12周的胸深增长极显著低于屏障环境饲养组(P<0.01), 12~16周的体质量和体斜长增长极显著低于屏障环境饲养组(P<0.01),胸深、胸宽增长显著低于屏障环境饲养组 (P<0.05)。结论　在育雏期(0~4周)隔离环境饲养组的生长性能好于屏障环境饲养组,在育成期(4~16周)屏障 环境饲养组的生长性能好于隔离环境饲养组。

关键词: SPF鸭, 饲养方式, 生长性能