玉米-大豆日粮中添加糖酶可提高肉鸡生长性能

Q3 Agricultural and Biological Sciences
Flávio Eduardo de Souza Simões, H. Mello, J. H. Stringhini, N. Leandro, A. G. Mascarenhas, J. M. Martins, M. Café
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引用次数: 1

摘要

本试验旨在研究降低饲粮能量水平并添加糖酶对肉仔鸡生产性能和营养物质代谢系数的影响。试验选用720只1日龄Cobb-500雄性雏鸡,采用完全随机设计,分6个处理,8个重复,每个重复15只。处理为:(1)阳性对照,基础饲粮满足肉仔鸡(PC)的需求;(2)阴性对照基础饲粮,减少80千卡每公斤(NC);(3) NC + α半乳糖酶;NC +木聚糖酶;(5) NC +木聚糖酶和α半乳糖苷酶,(6)NC +酶混合(α半乳糖苷酶、木聚糖酶、果胶酶和淀粉酶)。酶的使用并没有提高营养物质的消化率。7日龄时,饲粮中添加酶的肉仔鸡采食量(FI)低于添加PC的肉仔鸡,饲料系数(FCR)高于添加PC的肉仔鸡。在21日龄、35日龄和42日龄时,NC和酶混合料均导致肉鸡生产性能下降。在玉米-豆粕型饲粮中单独或联合添加α半乳糖苷酶和木聚糖酶可有效提高饲粮降能肉鸡的生长性能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Carbohydrase inclusion in a corn-soybean diet improves broiler growth performance
An experiment was conducted to evaluate the effect of diets with reduced energy level content, supplemented with carbohydrase, on broiler performance and the coefficient of metabolizability of nutrients. A total of 720 one-day-old male Cobb-500 chicks were distributed in a completely randomized design, with six treatments, eight repetitions of 15 birds each. The treatments were: (1) a positive control, basal diet to meet the requirements of broiler chickens (PC); (2) a negative control, basal diet with a reduction of 80 kcal kg-1 (NC); (3) NC + alphagalactosydase; (4) NC + xylanase; (5) NC + xylanase and alphagalactosydase, and (6) NC + enzymatic blend (alphagalactosydase, xylanase, pectinase and amylase). The nutrient digestibility was not improved by use of enzymes. At 7 days of age, the broilers which were fed diets supplemented with enzymes showed a lower feed intake (FI) and better feed conversion ratio (FCR) than the broilers fed on PC.  Both the NC and enzymatic blend resulted in a worse performance of the broilers at 21, 35 and 42 days old. The use of alphagalactosydase and xylanase, isolated or in combination, in a corn-soybean meal-based diet is effective in improving the growth performance of broilers fed energy-reduced diets.
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来源期刊
Acta Scientiarum. Animal Sciences
Acta Scientiarum. Animal Sciences Agricultural and Biological Sciences-Food Science
CiteScore
1.60
自引率
0.00%
发文量
45
审稿时长
9 weeks
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