饲粮钙、非植酸磷水平对29~56日龄慢速黄羽肉鸡生长性能和胫骨性状的影响  

Effects of Dietary Calcium and Non-Phytate Phosphorus Levels on Growth Performance and Tibial Characteristics of Slow-Growing Yellow-Feathered Broilers Aged from 29 to 56 Days

作　　者：王一冰 王薇薇 张盛 苟钟勇 李龙 林厦菁 范秋丽 叶金玲 蒋守群 WANG Yibing;WANG Weiwei;ZHANG Sheng;GOU Zhongyong;LI Long;LIN Xiajing;FAN Qiuli;YE Jinling;JIANG Shouqun(Institute of Animal Science,Guangdong Academy of Agricultural Sciences,State Key Laboratory of Livestock and Poultry Breeding,Key Laboratory of Animal Nutrition and Feed Science in South China,Ministry of Agriculture and Rural Affairs,Guangdong Key Laboratory of Animal Breeding and Nutrition,Guangzhou 510640,China)

机构地区：[1]广东省农业科学院动物科学研究所,畜禽育种国家重点实验室,农业农村部华南动物营养与饲料重点实验室,广东省畜禽育种与营养研究重点实验室,广州510640

出　　处：《动物营养学报》2020年第12期5659-5666,共8页CHINESE JOURNAL OF ANIMAL NUTRITION

基　　金：国家重点研发计划(2018YFD0500600);国家肉鸡产业技术体系项目(CARS-41-G10);国家自然科学基金青年基金(31802104);广东省科技计划项目(2017B020202003,2019A050505007);广州市科技计划重点项目(201804020091);广东省农业科学院院长基金项目(201805,201807B,201809B,201908);科技创新战略专项资金(高水平农科院建设)(R2019PY-QF008)。

摘　　要：本试验旨在探究饲粮钙(Ca)、非植酸磷(NPP)水平对29~56日龄慢速黄羽肉鸡生长性能和胫骨性状的影响。试验选用720只29日龄慢速岭南黄母鸡作为试验鸡,采用3(Ca水平)×3(NPP水平)因子试验设计,饲粮Ca水平分别为0.75%、0.85%、0.95%,NPP水平分别为0.35%、0.40%、0.45%,共9个处理,每个处理4个重复,每个重复20只鸡。试验期28 d。结果表明:1)饲粮Ca、NPP水平对生长性能没有显著影响(P>0.05),但饲粮Ca水平有影响料重比的趋势(P=0.080);饲粮Ca、NPP水平对料重比有显著交互作用(P<0.05),当饲粮Ca水平为0.75%、NPP水平为0.35%和Ca水平为0.85%、NPP水平为0.45%时,获得最小料重比,且显著低于饲粮Ca水平为0.85%、NPP水平为0.35%和Ca水平为0.95%、NPP水平为0.35%时(P<0.05)。2)饲粮Ca水平显著影响胫骨长度(P<0.05),主效应分析表明,饲粮Ca水平为0.75%和0.85%时的胫骨长度显著高于饲粮Ca水平为0.95%时(P<0.05)。饲粮NPP水平显著影响胫骨直径、折断力和密度(P<0.05),主效应分析表明,饲粮NPP水平为0.35%时的胫骨直径、折断力和密度均高于饲粮NPP水平为0.40%和0.45%时(P<0.05)。饲粮Ca、NPP水平对胫骨直径、折断力和密度有显著交互作用(P<0.05)。由此可见,在本试验条件下,饲粮Ca、NPP水平影响29~56日龄慢速黄羽肉鸡的胫骨性状并具有交互作用,综合胫骨指标与生长性能,推荐饲粮Ca、NPP水平分别为0.75%、0.35%。This experiment was conducted to investigate the effects of dietary calcium(Ca)and non-phytate phosphorus(NPP)levels on growth performance and tibial characteristics of slow-growing yellow-feathered broilers aged from 29 to 56 days.A total of 720 twenty-nine-day-old yellow-feathered female broilers were used,a 3(Ca level)×3(NPP level)factorial design was used,dietary Ca levels were 0.75%,0.85%and 0.95%,respectively,and NPP levels were 0.35%,0.40%and 0.45%,respectively,and there were 9 treatments with 4 replicates per treatment and 20 birds per replicate.The experiment lasted for 28 days.The results showed as follows:1)dietary Ca and NPP levels had no significant effects on growth performance(P>0.05),bud dietary Ca level had a tendency to affect the feed to gain ratio(P=0.080);dietary Ca and NPP levels had a significant interaction on the feed to gain ratio(P<0.05),when dietary Ca level of 0.75%,NPP level of 0.35%and Ca level of 0.85%,NPP level of 0.45%,the feed to gain ratio was the lowest,and significantly lower than that when dietary Ca level of 0.85%,NPP level of 0.35%and Ca level of 0.95%,NPP level of 0.35%(P<0.05).2)Dietary Ca level had significant effect on the tibial length(P<0.05),the main effect analysis showed that the tibial length when dietary Ca level of 0.75%and 0.85%was significantly higher than that when dietary Ca level of 0.95%(P<0.05).Dietary NPP had significant effect on the perimeter,broken strength and density of tibia(P<0.05),the main effect analysis showed that the perimeter,broken strength and density of tibia when dietary NPP of 0.35%were significantly higher than those when dietary NPP of 0.40%and 0.45%(P<0.05).Dietary NPP level had significant interactions on the perimeter,broken strength and density of tibia(P<0.05).In conclusion,under the experimental conditions,dietary Ca and NPP levels affect the tibial characteristics of slow-growing yellow-feathered broilers aged from 29 to 56 days,and have interaction effects,comprehensive the tibial index and growth performance,the recommended

关 键 词：钙 非植酸磷 慢速黄羽肉鸡 生长性能 胫骨指标 交互作用 

分 类 号：S831[农业科学—畜牧学]