Evaluation of Clostridium autoethanogenum protein as a new protein source for broiler chickens in replacement of soybean meal

• Published in: Animal bioscience 2024, 37(7), , pp.1236-1245
• Main Authors: Chen, Xing, Zheng, Aijuan, Shoaib, Ahmed Pirzado, Chen, Zhimin, Qiu, Kai, Wang, Zedong, Chang, Wenhuan, Cai, Huiyi, Liu, Guohua
• Format: Article
• Language: English
• Subjects: antioxidant capacity; broiler chickens; clostridium autoethanogenum protein; growth performance; immunoglobulin; 축산학
• ISSN: 2765-0189; 2765-0235
• DOI: 10.5713/ab.23.0419

Objective: The object of this study was to investigate the effect of replacing soybean meal with Clostridium autoethanogenum protein (CAP) in broiler diets on growth performance, blood indicators, antioxidant capacity, and immune function.Methods: A total of 180 Arbor Acres broilers were randomly divided into three treatments, each treatment with six replicates and 10 broilers per replicate for a 42-day feeding trial. The control group (CON) was fed corn-soybean meal based diet. The CAP-1 and CAP-2 groups were considered to use CAP to replace 25% or 50% of soybean meal in the diet, respectively. The average daily gain and average daily feed intake of broilers at 1 to 21 d, 22 to 42 d, and 1 to 42 d were measured, and the feed conversion ratio was calculated. At the 42nd day of age, two broilers with similar weights and fasted for 12 h were selected in each replicate for blood collection from the brachial wing vein. The blood routine indicators, serum biochemical indicators, serum antioxidant capacity, and immunoglobulin content of broiler chickens were measured.Results: Replacement of soybean meal with 25% (CAP-1) and 50% (CAP-2) CAP significantly increased the average daily gain of 22 to 42 d and 1 to 42 d and decreased the average daily feed intake and feed conversion rate (p