1~21日龄肉仔鸡对高温烧结法磷酸三钙的相对生物学利用率研究  

Relative Bioavailability of Tricalcium Phosphate by High Temperature Sintering in Broilers from 1 to 21 Days of Age

作　　者：曹素梅 罗状状 AYALEW Habtamu 徐长春 刘英丽[2] 张永松 杨宏 吴长江 刘成 张海军[1] 武书庚[1] CAO Sumei;LUO Zhuangzhuang;AYALEW Habtamu;XU Changchun;LIU Yingli;ZHANG Yongsong;YANG Hong;WU Changjiang;LIU Cheng;ZHANG Haijun;WU Shugeng(National Engineering Research Center for Biological Feed,Key Laboratory of Feed Biotechnology,Ministry of Agriculture and Rural Affairs,Institute of Feed Research,Chinese Academy of Agricultural Sciences,Beijing 100081,China;College of Animal Science and Technology,Xinyang Agriculture and Forestry University,Xinyang 464000,China;Wengfu Group Co.,Ltd.,Guiyang 550002,China)

机构地区：[1]中国农业科学院饲料研究所,农业农村部饲料生物技术重点实验室,生物饲料开发国家工程研究中心,北京100081 [2]信阳农林学院,动物科技学院,信阳464000 [3]瓮福(集团)有限责任公司,贵阳550002

出　　处：《动物营养学报》2024年第11期6989-7002,共14页CHINESE JOURNAL OF ANIMAL NUTRITION

基　　金：国家自然科学基金(32302771);瓮福(集团)研发基金(WF-001-2022-QT-00236)。

摘　　要：本研究以磷酸一二钙(MDCP)为参照物,以1~21日龄肉仔鸡生长性能、血清磷代谢以及胫骨发育和磷代谢相关指标为评价指标,评价高温烧结法磷酸三钙(TCP)的相对生物学利用率,为TCP在肉鸡上的高效利用提供参考。试验采用“2×4+1”两因素完全随机试验设计,选择1080只1日龄爱拔益加(AA)肉仔鸡公雏,随机分为9个组,每组6个重复,每个重复20只鸡。2种磷源各设定5个无机磷添加水平,分别为0(对照组,基础饲粮)、0.07%、0.14%、0.21%和0.28%,对应9个组(对照组共用);基础饲粮非植酸磷含量为0.16%。试验期21 d。结果表明:1)与对照组相比,磷添加组1~21日龄肉仔鸡终末体重和平均日增重(ADG)显著提高(P<0.05),死淘率显著降低(P<0.05)。随着饲粮磷添加水平的提高,1~21日龄肉仔鸡终末体重、ADG和平均日采食量(ADFI)均呈线性提高(P<0.05),死淘率呈线性降低(P<0.05)。2)与添加MDCP相比,添加TCP显著提高了21日龄肉仔鸡血清钙和磷含量(P<0.05)。随着饲粮磷添加水平的提高,21日龄肉仔鸡血清钙和磷含量均呈线性降低(P<0.05)。3)与对照组相比,磷添加组21日龄肉仔鸡胫骨密度和胫骨强度显著提高(P<0.05)。随着饲粮磷添加水平的提高,21日龄肉仔鸡胫骨长度、胫骨密度、胫骨矿物质含量和胫骨强度均呈线性提高(P<0.05)。当饲粮磷添加水平为0.28%时,21日龄肉仔鸡胫骨发育各项指标均显著高于饲粮磷添加水平为0.07%和0.14%时(P<0.05)。4)与对照组相比,磷添加组21日龄肉仔鸡胫骨钙和磷含量显著提高(P<0.05)。随着饲粮磷添加水平的提高,21日龄肉仔鸡胫骨灰分、钙和磷含量以及灰分总磷沉积量均呈线性提高(P<0.05)。5)以MDCP(100.0%)为参照物,以1~21日龄肉仔鸡生长性能以及胫骨发育和磷代谢相关指标作为评价指标,高温烧结法TCP的相对生物学利用率为63.6%~117.8%。综上可知,相对于MDCP(100.0%),1~21日龄肉仔鸡对高温烧结法TCP的�In this study,the relative bioavailability of tricalcium phosphate(TCP)by high temperature sintering to mono-calcium and di-calcium phosphate(MDCP)was evaluated by using the growth performance,serum phosphorus metabolism,tibial development and phosphorus metabolism related indices of broilers from 1 to 21 days of age,aiming to provide a reference for the efficient utilization of TCP in broilers.A total of 1080 Arbor Acres(AA)broilers of 1-day-old were randomly divided into 9 groups with 6 replicates per group and 20 broilers per replicate using a“2×4+1”two-factor completely randomized design.Five inorganic phosphorus supplemental levels were set for each of the two phosphorus sources,which were 0(control group,basal diet),0.07%,0.14%,0.21%and 0.28%,respectively,corresponding to 9 groups(control group shared).The content of non-phytic acid phosphorus in the basal diet was 0.16%.The experiment lasted for 21 days.The results showed as follows:1)compared with the control group,the final body weight and average daily gain(ADG)of broilers from 1 to 21 days of age in phosphate supplemental groups were significantly increased(P<0.05),and the mortality was significantly decreased(P<0.05).With the increase of dietary phosphate supplemental level,the final body weight,ADG and average daily feed intake(ADFI)of broilers from 1 to 21 days of age were linearly increased(P<0.05),and the mortality was linearly decreased(P<0.05).2)Compared with MDCP,TCP supplementation significantly increased the serum calcium and phosphorus contents of broilers at 21 days of age(P<0.05).With the increase of dietary phosphorus supplemental level,the serum calcium and phosphorus contents of broilers at 21 days of age were linearly decreased(P<0.05).3)Compared with the control group,the tibia density and tibia strength of broilers at 21 days of age in phosphorus supplemental group were significantly increased(P<0.05).With the increase of dietary phosphorus supplemental level,the tibial length,tibial density,tibial mineral content and tibial str

关 键 词：肉仔鸡 磷酸三钙 磷酸一二钙 生物学利用率 

分 类 号：S816[农业科学—饲料科学]