Effects of different supplemental levels of protease DE200 on the production performance, egg quality, and cecum microflora of laying hens
Peiran Cai,
Shiqi Liu,
Yuang Tu
et al.
Abstract:This study aimed to investigate the effects of different levels of the protease DE200TM on the performance, egg quality, organ index and cecum microflora of Hy-line W36 laying hens. In this experiment, a total of 180 laying hens aged 300 days were randomly divided into three treatment groups and fed diets containing 0, 100 or 200 g/t DE200. The experimental period was eight weeks, including two weeks of prefeeding and six weeks of the formal experiment. Regular feeding was performed thrice a day and eggs were … Show more
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