Influence of particle size and calcium source on production performance, egg quality, and bone parameters in laying ducks
文献类型: 外文期刊
第一作者: Wang, S.
作者: Wang, S.;Chen, W.;Zhang, H. X.;Ruan, D.;Lin, Y. C.
作者机构:
关键词: calcium source;particle size;productive performance;egg quality
期刊名称:POULTRY SCIENCE ( 影响因子:3.352; 五年影响因子:3.679 )
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年卷期:
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收录情况: SCI
摘要: The ininot sign,uence of calcium source (limestone and oyster shell) and particle size (< 0.1 mm; 0.85 to 2 mm) on laying performance, egg quality, and bone properties were examined in laying ducks by a 2 x 2 factorial arrangement of treatments. Longyan females (288) with similar BW at 24 wk of age were randomly allotted into 4 treatments, each with 6 replicates of 12 individually caged birds and studied over the following 12 wk. Particle size affected egg weight and feed conversion (P < 0.05). Large particle size increased shell breaking strength, albumen height, Haugh unit, and shell content of phosphorus and magnesium (P < 0.05), but had no effect on egg shape, yolk color, shell thickness, or the weight proportion of shell. There were no effects of particle size on tibial properties: dry defatted weight, calcium content, or breaking strength. Limestone increased albumen height, shell content of calcium and phosphorus, and the breaking strength of tibia (P < 0.05). It is concluded that limestone with a large particle size provided for superior productive performance, egg quality, and bone characteristics and is more suitable than oyster shell for practical applications.
分类号: S8
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