Effects of Two Xylanases on Growth Performance and Nutrient Metabolizability of Yellow-feather Broilers |
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Authors: | WANG Xiong CHEN Qing-hua DING Zeng-hui WANG Xing-ji |
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Institution: | 1. College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, China;
2. Shandong Lonct Enaymes Co., Ltd., Linyi 276400, China |
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Abstract: | The experiment was aimed to investigate the effects of xylanases from different sources on growth performance and nutrition metabolizability of Yellow-feather broilers.540 of healthy 1-day-old Yellow-feather broilers were randomly divided into three groups with 6 replicates per group and 30 broilers per replicate,and the trial period was 42 d.The control group was fed a wheat-corn-soybean meal diet,and groups A and B fed the basal diet supplemented with 200 g/t Trichoderma xylanase (30 000 IU/g) and bacterial xylanase (30 000 IU/g), respectively.The results showed that,compared with the control group,the average daily gain,apparent metabolizability of crude fat,crude fiber,calcium and phosphorus,and apparent metabolizable energy were significantly higher (P < 0.05),the F/G were significantly decreased (P < 0.05) in both groups A and B,their apparent metabolizabilities of crude protein increased by 5.90% (P < 0.05) and 3.54% (P > 0.05), respectively.There were no significant differences for all the determined indexes between groups A and B (P > 0.05).The supplementation of Trichoderma xylanase or bacterial xylanase at 200 g/t could improve nutrient metabolizability,thus improve growth performance of broilers,while the effects of Trichoderma xylanase were better than that of bacterial xylanase. |
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Keywords: | xylanase Yellow-feather broiler growth performance nutrient metabolizability |
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