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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

作者： Wang, S. 1 ; Chen, W. 1 ; Zhang, H. X. 1 ; Ruan, D. 1 ; Lin, Y. C. 2 ;

作者机构： 1.Guangdong Acad Agr Sci, Guangdong Publ Lab Anim Breeding & Nutr Guangdong, Key Lab Anim Nutr & Feed Sci South China,Inst Ani, State Key Lab Livestock & Poultry Breeding,Minist, Guangzhou 510640, Guangdong, Peoples R China

2.Guangdong Acad Agr Sci, Guangdong Publ Lab Anim Breeding & Nutr Guangdong, Key Lab Anim Nutr & Feed Sci South China,Inst Ani, State

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 ）

ISSN：

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.

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