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OA
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
本试验旨在探究饲粮钙、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.选择 1 188 只 12 周龄健康肉用品系琅琊鸡,随机分为 9 个组,每组 6 个重复,每个重复 22 只鸡.采用 3×3 二因素三水平试验设计,钙水平分别设置为0.55％、0.65％、0.75％,磷水平分别设置为 0.50％、0.60％、0.70％.预试期 1 周,正试期 5 周.结果表明:1)0.65％钙水平组料重比(F/G)显著低于 0.55％和 0.75％钙水平组(P<0.05).0.60％磷水平组 F/G 显著低于 0.50％和 0.70％磷水平组(P<0.05).2)0.65％钙水平组全净膛率、胸肌率和腹脂率显著高于 0.75％钙水平组(P<0.05).0.60％磷水平组屠宰率、全净膛率、胸肌率、腿肌率和腹脂率显著高于 0.50％磷水平组(P<0.05).3)0.65％钙水平组肌肉滴水损失显著低于0.55％和 0.75％钙水平组(P<0.05),0.65％和 0.75％钙水平组肌肉剪切力显著低于 0.55％钙水平组(P<0.05),0.65％钙水平组肌肉红度(a∗)值显著高于 0.55％和 0.75％钙水平组(P<0.05).0.60％磷水平组肌肉 pH45 min显著高于 0.50％和 0.70％磷水平组(P<0.05),0.60％磷水平组肌肉滴水损失显著低于 0.50％和 0.70％磷水平组(P<0.05),0.50％和 0.60％磷水平组肌肉剪切力显著低于 0.70％磷水平组(P<0.05).4)0.65％钙水平组粗蛋白质和钙表观利用率显著高于0.75％钙水平组(P<0.05).0.60％磷水平组粗蛋白质表观利用率显著高于 0.50％磷水平组(P<0.05),0.60％磷水平组磷表观利用率显著高于 0.70％磷水平组(P<0.05).5)0.65％钙水平组肠道胰蛋白酶活性显著高于 0.55％和 0.75％钙水平组(P<0.05).0.60％磷水平组肠道脂肪酶和胰蛋白酶活性显著高于0.50％磷水平组(P<0.05).6)饲粮钙和磷水平对F/G、半净膛率、全净膛率、胸肌率、钙表观利用率及肌肉 pH45min、滴水损失、剪切力有显著互作效应(P<0.05).由此可见,饲粮适宜的钙、磷水平可提高育肥期琅琊鸡的生长性能、屠宰性能和消化机能,改善肉品质.育肥期琅琊鸡饲粮钙和磷水平分别以 0.65％和 0.60％为宜.
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.
王梦涵;史雪萍;周传凤;张柏林;龚相维;朱益民;陈小龙;王述柏
青岛农业大学动物科技学院,青岛 266109青岛农业大学动物科技学院,青岛 266109青岛农业大学生命科学学院,青岛 266109青岛农业大学动物科技学院,青岛 266109山东青岛禽之宝琅琊鸡育种有限公司,青岛 266500青岛农业大学动物科技学院,青岛 266109青岛农业大学动物科技学院,青岛 266109青岛农业大学动物科技学院,青岛 266109
农业科技
琅琊鸡钙磷生长性能屠宰性能肉品质消化机能
Langya chickenscalciumphosphorusgrowth performanceslaughter performancemeat quali-tydigestive function
《动物营养学报》 2026 (8)
5838-5851,14
青岛市科技惠民示范专项项目(23-2-8-xdny-16-nsh)山东省家禽产业技术体系(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)
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