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Bone phosphorus retention and bone development of broilers at different ages

文献类型： 外文期刊

作者： Shao, Yuxin 1 ; Sun, Guangming 1 ; Cao, Sumei 1 ; Lu, Lin 1 ; Zhang, Liyang 1 ; Liao, Xiudong 1 ; Luo, Xugang 1 ;

作者机构： 1.Chinese Acad Agr Sci, Inst Anim Sci, Mineral Nutr Res Div, Beijing 100193, Peoples R China

2.Gansu Agr Univ, Dept Anim Sci, Lanzhou 730070, Gansu, Peoples R China

3.State Key Lab Hulless Barley & Yak Germplasm Reso, Lhasa 850000, Peoples R China

4.Tibet Acad Agr & Anim Husb Sci, Inst Anim Sci & Vet, Lhasa 850009, Peoples R China

关键词： bone phosphorus retention; bone development; age; broiler

期刊名称：POULTRY SCIENCE （ 影响因子：3.352； 五年影响因子：3.679 ）

ISSN： 0032-5791

年卷期： 2019 年 98 卷 5 期

页码：

收录情况： SCI

摘要： The present study was carried out to investigate the tibia phosphorus (P) retention and development as well as their correlations and possible mechanisms of broilers at different ages. A total of 320 1-day-old Arbor Acres male broilers were raised in 8 replicate cages of 40 birds per cage, and fed the same corn-soybean diets for 42 d. Plasma and tibia samples of broilers were collected on day 0, 7, 14, 21, 28, 35, or 42. The results showed that the tibia ash P content increased linearly (P = 0.017), and the total P accumulation in tibia ash increased linearly and quadratically (P < 0.001) with age. The traits of bone development including the tibia bone mineral content (BMC), the tibia bone mineral density (BMD), and the tibia ash content increased linearly and quadratically (P < 0.001), while the tibia breaking strength increased linearly (P < 0.001) with age. The tibia bone gal protein (BGP) content decreased linearly (P = 0.011), but neither a linear nor quadratic (P > 0.15) response was observed for the tibia alkaline phosphatase (ALP) with age. The tibia ash P content was positively correlated with the tibia BMD (r = 0.325, P = 0.014), ash (r = 0.325, P = 0.001), and ALP (r = 0.377, P = 0.004). The total P accumulation in tibia ash also was positively correlated with all of the above traits of bone development (r = 0.437 to 0.976, P < 0.001); however, it was negatively correlated with the tibia BGP (r = -0.426, P = 0.0014). Additionally, the tibia ALP was positively correlated with the tibia ash (r = 0.369, P < 0.001), and the tibia BGP was negatively correlated with the tibia BMC (r = -0.453, P < 0.001), breaking strength (r = -0.384, P < 0.001), and ash content (r = -0.361, P < 0.001). The above results indicated that the bone P retention was involved in the bone development of broilers from 1 to 42 d of age possibly via the regulation of the bone ALP and BGP.

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