动物营养学报2026，Vol.38Issue(8)：5838-5851,14.DOI:10.12418/CJAN2026.468
饲粮钙、磷水平对育肥期琅琊鸡生长性能、屠宰性能、肉品质、养分表观利用率和肠道消化酶活性的影响
Effects of Dietary Calcium and Phosphorus Levels on Growth Performance,Slaughter Performance,Meat Quality,Nutrient Apparent Utilization Rates and Intestinal Digestive Enzyme Activities of Langya Chickens during Fattening Period
摘要
Abstract
This experiment was conducted to investigate the effects of dietary calcium and phosphorus levels on growth performance,slaughter performance,meat quality,nutrient apparent utilization rates and intestinal di-gestive enzyme activities of Langya chickens during fattening period.A total of 1 188 healthy 12-week-old meat product series Langya chickens were randomly divided into 9 groups with 6 replicates per group and 22 chick-ens per replicate.A 3×3 two-factor orthogonal experimental design was adopted,the dietary calcium levels were set at 0.55％,0.65％and 0.75％,respectively,and the phosphorus levels were set at 0.50％,0.60％and 0.70％,respectively.The pre-trial period lasted for 1 week,and the trial period lasted for 5 weeks.The results showed as follows:1)the feed to gain ratio(F/G)of 0.65％calcium level group was significantly lower than that of 0.55％and 0.75％calcium level groups(P<0.05).The F/G of 0.60％phosphorus level group was sig-nificantly lower than that of 0.50％and 0.70％phosphorus level groups(P<0.05).2)The full-eviscerated rate,breast muscle rate and abdominal fat rate of 0.65％calcium level group were significantly higher than those of 0.75％calcium level group(P<0.05).The slaughter rate,full-eviscerated rate,breast muscle rate,thigh muscle rate and abdominal fat rate of 0.60％phosphorus level group were significantly higher than those of 0.50％phosphorus level group(P<0.05).3)The muscle drip loss of 0.65％calcium level group was sig-nificantly lower than that of 0.55％and 0.75％calcium level groups(P<0.05),the muscle shear force of 0.65％and 0.75％calcium level groups was significantly lower than that of 0.55％calcium level group(P<0.05),and the muscle redness(a∗)value of 0.65％calcium level group was significantly higher than that of 0.55％and 0.75％calcium level groups(P<0.05).The muscle pH45 min of 0.60％phosphorus level group was significantly higher than that of 0.50％and 0.70％phosphorus level groups(P<0.05),the muscle drip loss of 0.60％phosphorus level group was significantly lower than that of 0.50％and 0.70％phosphorus level groups(P<0.05),and the muscle shear force of 0.50％and 0.60％phosphorus level groups was significantly lower than that of 0.70％phosphorus level group(P<0.05).4)The crude protein and calcium apparent utilization rates of 0.65％calcium level group were significantly higher than those of 0.75％calcium level group(P<0.05).The crude protein apparent utilization rate of 0.60％phosphorus level group was significantly higher than that of 0.50％phosphorus level group(P<0.05),and the phosphorus apparent utilization rate of 0.60％phosphorus level group was significantly higher than that of 0.70％phosphorus level group(P<0.05).5)The intestinal trypsin activity of 0.65％calcium level group was significantly higher than that of 0.55％and 0.75％calcium level groups(P<0.05).The intestinal lipase and trypsin activities of 0.60％phosphorus level group were significantly higher than those of 0.50％phosphorus level group(P<0.05).6)Dietary calcium and phos-phorus levels had significant interaction effects on the F/G,half-eviscerated rate,full-eviscerated rate,breast muscle rate,calcium apparent utilization rate and muscle pH45 min,drip loss,shear force(P<0.05).In conclu-sion,the dietary appropriate calcium and phosphorus levels can improve the growth performance,slaughter performance,digestive function and meat quality of Langya chickens during fattening period.The dietary ap-propriate calcium and phosphorus levels for Langya chickens during fattening period are 0.65％and 0.60％,re-spectively.关键词
琅琊鸡/钙/磷/生长性能/屠宰性能/肉品质/消化机能Key words
Langya chickens/calcium/phosphorus/growth performance/slaughter performance/meat quali-ty/digestive function分类
农业科技引用本文复制引用
王梦涵,史雪萍,周传凤,张柏林,龚相维,朱益民,陈小龙,王述柏..饲粮钙、磷水平对育肥期琅琊鸡生长性能、屠宰性能、肉品质、养分表观利用率和肠道消化酶活性的影响[J].动物营养学报,2026,38(8):5838-5851,14.基金项目
青岛市科技惠民示范专项项目(23-2-8-xdny-16-nsh) （23-2-8-xdny-16-nsh）
山东省家禽产业技术体系(SDAIT-11-14) （SDAIT-11-14）
山东省技术创新引导计划(中央引导地方科技发展资金)(YDZX2023097) （中央引导地方科技发展资金）
