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饲粮脂肪水平对繁殖期蓝狐繁殖性能、营养物质消化率、氮代谢及产后体重的影响

DOI: 10.3969/j.issn.1006-267x.2014.07.017

Keywords: 脂肪,繁殖期,蓝狐,消化率,繁殖性能

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Abstract:

本试验旨在研究饲粮脂肪水平对繁殖期蓝狐繁殖性能、营养物质消化率、氮代谢及产后体重的影响。采用单因素试验设计,选择受孕的健康母狐75只,随机分成5组,每组15只蓝狐,分别饲喂脂肪水平为15%(A组)、17%(B组)、19%(C组)、21%(D组)和23%(E组)的饲粮。预试期7d,试验期120d。结果表明:1)各组母狐的平均窝产仔数、断奶成活率和仔狐初生重差异不显著(P>0.05);仔狐在出生后21、42d时,高脂肪水平饲粮能够提高仔狐的体重。2)E组母狐干物质采食量显著高于B、C组(P0.05)。3)E组母狐的食入氮显著高于B组(P0.05)。4)产后21d,A组母狐的体重极显著低于E组(P0.05)。综合各项指标得出,饲粮15%~19%的脂肪水平能够获得较好的繁殖性能,母狐能够更好地利用饲粮中各营养物质。

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