不同生物素水平对北京鸭前期生长性能影响及后期缺乏症观察

选用体重相近的1日龄雄性北京鸭512只,随机分成8组,每组8个重复,每个重复8只鸭。研究不同生物素水平对1~14日龄北京鸭生长性能的影响,以及进行后期生物素缺乏症的观察。结果表明:提高日粮中生物素水平,1~14日龄北京鸭日采食量和日增重也随之提高(P<0.05),料重比没有改善(P<0.05)。以日增重为衡量指标,通过直线折线模型分析,初步确定生物素适宜添加水平为0.186 mg/kg。北京鸭生物素缺乏症病变依次表现:眼部>羽毛>腿部>肝脏,伴发脂肪肝肾综合症(FLKS)。

Effects of biotin with different levels on the growth performance in early period and biotin deficiency in the later period of Peking duck

In order to investigate the effect of different levels of biotin on the growth performance of 1 to 14 days old Peking ducks,and to observe biotin deficiency in the later period of Peking duck.Total of 512 one-day-age male Peking ducks were allotted into 8 treatments randomly.Each treatment consisted of 8 replicates with 8 birds each.The results showd that the body weight gain and feed intake in 1 to 14 days old Peking duck were improved with the increase of dietary biotin(P<0.05);but the feed:gain was not improved(P<0.05).The optimal level of biotin was estimated 0.186 mg/kg by broken-line regression analysis based on body weight gain.The expression of biotin deficiency was on the eyes,feather,leg and liver in order,associated with the fatty liver and kidney syndrome(FLKS).