Effect of Bacillus subtilis supplementation and dietary crude protein level on growth performance and intestinal morphological changes of meat type chicken

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• 作者：K.Z. Mahmoud^a ; ^{kmahmoud@just.edu.jo} ; B.S. Obeidat^a ; M.Z. Al-Sadi^a ; Sh.R. Hatahet^b
• 关键词：Broiler chick ; B. subtilis ; Carcass ; Growth performance ; Meat quality
• 刊名：Livestock Science
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：195
• 期：Complete
• 页码：99-104
• 全文大小：226 K
• 卷排序：195

文摘

Bacillus subtilis supplementation did not affect broiler growth performance; however, reducing dietary crude protein requirement level by decreased body weight and increased feed conversion ratio. The body weight of broiler chicks fed on lower crude protein diet became comparable to those fed on recommended crude protein diet when supplemented with Bacillus subtilis. Bacillus subtilis supplementation considerably deepened crypt depth and increased the ratio between crypt depth and villi height as well. Bacillus subtilis supplementation improved ileal crude protein digestibility; this improvement was more evident in groups fed low dietary crude protein.