Effect of dietary calcium or phosphorus deficiency on bone development and related calcium or phosphorus metabolic utilization parameters of broilers from 22 to 42 days of age  

作　　者：YANG Yun-feng XING Guan-zhong LI Su-fen SHAO Yu-xin ZHANG Li-yang LU Lin LUO Xugang LIAO Xiu-dong 

机构地区：[1]Mineral Nutrition Research Division,Institute of Animal Sciences,Chinese Academy of Agricultural Sciences,Beijing 100193,P.R.China [2]Poultry Mineral Nutrition Laboratory,College of Animal Science and Technology,Yangzhou University,Yangzhou 225000,P.R.China [3]College of Animal Science and Technology,Hebei Normal University of Science and Technology,Qinhuangdao 066004,P.R.China

出　　处：《Journal of Integrative Agriculture》2020年第11期2775-2783,共9页农业科学学报（英文版）

基　　金：The present study was financially supported by the National Key R&D Program of China(2017YF0502200);the Key Program of the National Natural Science Foundation of China(31630073);the earmarked fund for China Agriculture Research System(CARS-41);the Agricultural Science and Technology Innovation Program,China(ASTIP-IAS09);the earmarked fund for Hebei Chicken Innovation Team of Modern Agro-Industry Technology Research System,China(HBCT2018150203 and HBCT2018150206).

摘　　要：This experiment was conducted to investigate the effect of dietary calcium(Ca)or phosphorus(P)deficiency on bone development and related Ca or P metabolic utilization parameters of broilers from 22 to 42 days of age based on our previous study,which indicated that dietary Ca or P deficiency impaired the bone development by regulating related Ca or P metabolic utilization parameters of broilers from 1 to 21 days of age.A total of 504 one-day-old Arbor Acres male broilers were randomly assigned to 1 of 4 treatments with 7 replicates in a completely randomized design,and fed the normal control and Ca-or P-deficient diets from 1 to 21 days of age.At 22 days of age,the broilers were further fed the normal control diet(0.90%Ca+0.35%non-phytate P(NPP)),the P-deficient diet(0.90%Ca+0.18%NPP),the Ca-deficient diet(0.30%Ca+0.35%NPP)or the Ca and P-deficient diet(0.30%Ca+0.18%NPP),respectively.The results showed that dietary Ca or P deficiency decreased(P<0.05)tibia bone mineral density(BMD),bone breaking strength(BBS),ash content,tibia ash Ca content and serum P content on days 28 and 42,but increased(P<0.05)tibia alkaline phosphatase(ALP)activity of broilers on day 42 compared with the control group.Furthermore,the broilers fed the P-deficient diet had the lowest(P<0.05)tibia BMD,BBS,ash content,serum P content and the highest(P<0.05)serum Ca content on day 28 compared with those fed the Ca-deficient or Ca and P-deficient diets.The results from the present study indicated that the bone development and related Ca or P metabolic utilization parameters of broilers were the most sensitive to dietary P deficiency,followed by dietary Ca deficiency or Ca and P-deficiency;dietary Ca or P deficiency impaired the bone development possibly by regulating serum Ca and P contents as well as tibia Ca content and ALP activity of broilers from 22 to 42 days of age.

关 键 词：calcium deficiency phosphorus deficiency bone development metabolic utilization parameter BROILER 

分 类 号：S831.5[农业科学—畜牧学]