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- W2795854669 abstract "本试验旨在研究高、低钙饲粮交替饲喂对蛋鸡产蛋后期生产性能、蛋品质及血清指标的影响。试验选取68周龄的大午粉1号蛋种鸡64只,随机分为2组,每组32只,单笼饲养于个体智能鸡笼内,对照组08:00和14:00分别饲喂43.3、86.7 g中钙饲粮(钙含量为3.66%),试验组08:00饲喂43.3 g低钙饲粮(钙含量为2.00%),14:00饲喂86.7 g高钙饲粮(钙含量为4.49%)。试验期为5周,其中预试期1周,正试期为4周。结果显示:试验组各周的平均日采食量、平均蛋重、产蛋率、料蛋比与对照组无显著差异(P > 0.05),但试验组各周的产蛋率在数值上高于对照组。试验组第2周的蛋壳厚度显著高于对照组(P 0.05)。对照组中,18:00和22:00的血清钙含量显著高于10:00和14:00(P 0.05);试验组中,22:00的血清钙含量极显著高于06:00、10:00、18:00和次日02:00(P < 0.01),并显著高于14:00和18:00(P < 0.05);从06:00到22:00,试验组血清钙含量一直呈现增长的趋势,在22:00时,试验组血清钙、降钙素含量均显著高于对照组(P < 0.05)。由此得出,高、低钙饲粮交替饲喂(将高钙饲粮在下午饲喂)可提高蛋鸡产蛋后期的产蛋率和对钙的吸收和沉积,并且可在一定程度上改善蛋壳质量。" @default.
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- W2795854669 date "2018-04-15" @default.
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- W2795854669 title "高、低钙饲粮交替饲喂对蛋鸡产蛋后期生产性能、蛋品质及血清指标的影响" @default.
- W2795854669 doi "https://doi.org/10.3969/j.issn.1006-267x.2018.04.014" @default.
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