两种木聚糖酶对黄羽肉鸡生长性能和养分代谢率的影响

doi:10.16431/j.cnki.1671-7236.2016.07.015

Abstract

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.

Key words: xylanase; Yellow-feather broiler; growth performance; nutrient metabolizability

CLC Number:

S816.7

WANG Xiong, CHEN Qing-hua, DING Zeng-hui, WANG Xing-ji. Effects of Two Xylanases on Growth Performance and Nutrient Metabolizability of Yellow-feather Broilers[J]. , 2016, 43(7): 1755-1760.

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Effects of Two Xylanases on Growth Performance and Nutrient Metabolizability of Yellow-feather Broilers

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