To explore the effects of breeds,number of nurturing squabs,and temperature on nest feed conversion ratio and analyze the effects of number of nurturing squabs on parent pigeon body mass,fertility rate,and laying inte...To explore the effects of breeds,number of nurturing squabs,and temperature on nest feed conversion ratio and analyze the effects of number of nurturing squabs on parent pigeon body mass,fertility rate,and laying intervals,5 widely used breeds of pigeon were nurtured under the condition of natural laying and hatching in this research.In each breed,24 pair pigeons nurturing 1,2,3,and 4 squabs were chosen to measure the production performance,respectively.The results indicated that different numbers of nurturing squabs had a significant effect on parent pigeon body mass changes and survival rate of 28-d old squabs(P<0.05);the nest feed conversion ratio of breeds nurturing 1 squab(7.58)was extremely significantly higher than those of nurturing 2,3,and 4 squabs(P<0.01);the nest feed conversion ratio of breeds nurturing 2 squabs(4.75)was extremely significantly higher than those of nurturing 3(3.95)and 4 squabs(3.75)(P<0.01);there was no significant difference between breeds nurturing 3 and 4 squabs(P>0.05).Laying intervals of breeds nurturing 4 squabs(43.8 d)were significantly higher than those of nurturing 3(37.4 d),2(35.4 d),and 1(33.8 d)squabs(P<0.05).Nest feed conversion ratio significantly increased with the decrease of environment temperature(P<0.05).The breed showed no effect on the nest feed conversion ratio.In production,nurturing 3 squabs of parent pigeons is appropriate.In some cold areas in winter,cold protection measures should be taken.展开更多
试验旨在探究“2+2”生产模式下不同粗蛋白质水平对白王种鸽繁殖性能和乳鸽生长性能的影响。试验选取产蛋性能相近的300日龄健康种鸽168对,随机分为4组,每组7个重复,每个重复6对种鸽,每对种鸽哺育2只乳鸽。试验Ⅰ组、Ⅱ组、Ⅲ组和Ⅳ组...试验旨在探究“2+2”生产模式下不同粗蛋白质水平对白王种鸽繁殖性能和乳鸽生长性能的影响。试验选取产蛋性能相近的300日龄健康种鸽168对,随机分为4组,每组7个重复,每个重复6对种鸽,每对种鸽哺育2只乳鸽。试验Ⅰ组、Ⅱ组、Ⅲ组和Ⅳ组分别饲喂粗蛋白质水平为13.43%、15.04%、16.64%和18.25%的饲粮。试验期46 d,其中孵化期18 d (1~18 d),哺乳期28 d (19~46 d)。结果显示,试验Ⅱ组、Ⅲ组产蛋间隔显著低于试验Ⅰ组(P<0.05),试验Ⅲ组种蛋受精率显著高于试验Ⅰ组、Ⅳ组(P<0.05),试验Ⅲ组入孵蛋孵化率极显著高于试验Ⅰ组、Ⅱ组、Ⅳ组(P<0.01)。试验Ⅲ组乳鸽28日龄体重显著高于试验Ⅰ组(P<0.05),乳鸽屠宰率极显著高于试验Ⅰ组(P<0.01),乳鸽胸肌率显著高于试验Ⅰ组、Ⅱ组、Ⅳ组(P<0.05)。试验Ⅱ组、Ⅲ组、Ⅳ组窝料重比1极显著低于试验Ⅰ组(P<0.01)。研究表明,不同粗蛋白质水平影响了种鸽的繁殖性能、乳鸽的生长性能以及窝料重比,在“2+2”生产模式下,建议白王种鸽饲粮适宜粗蛋白质水平为16.64%。展开更多
试验旨在探究亲鸽饲粮添加茶多酚对乳鸽生长性能、屠宰性能、肉品质及肌肉抗氧化能力的影响。试验选取120对遗传背景相近、产蛋情况相同的7月龄健康亲鸽随机分为4组,每组6个重复,每个重复5对亲鸽。对照组饲喂基础饲粮,试验Ⅰ~Ⅲ组分别...试验旨在探究亲鸽饲粮添加茶多酚对乳鸽生长性能、屠宰性能、肉品质及肌肉抗氧化能力的影响。试验选取120对遗传背景相近、产蛋情况相同的7月龄健康亲鸽随机分为4组,每组6个重复,每个重复5对亲鸽。对照组饲喂基础饲粮,试验Ⅰ~Ⅲ组分别在基础饲粮中添加100、200和400 mg/kg的茶多酚,试验期53 d。测定28日龄乳鸽生长性能、屠宰性能、肉品质及肌肉抗氧化能力。结果显示:与对照组对比,各试验组半净膛率均显著提高(P<0.05),试验Ⅰ组腿肌率显著提高(P<0.05),试验Ⅲ组腹脂率显著降低(P<0.05);各试验组肌肉p H24h值均显著升高(P<0.05),肌肉24 h L^(*)值和b^(*)值以及失水率均显著降低(P<0.05),试验Ⅰ组肌肉45 min和24 h a^(*)值均显著升高(P<0.05),45 min b^(*)值显著降低(P<0.05),肌肉剪切力显著降低(P<0.05),肌肉鲜样水分含量显著降低(P<0.05);试验Ⅲ组乳鸽肌肉干样粗脂肪含量显著降低(P<0.05),肌肉超氧化物歧化酶(SOD)和谷胱甘肽过氧化物酶(GSH-Px)活性均显著升高(P<0.05)。结果表明,亲鸽饲粮添加茶多酚可以提高乳鸽屠宰性能和肌肉抗氧化能力并改善肉品质,400 mg/kg添加量较适宜。展开更多
基金Supported by Key Research and Development Program (Modern Agriculture) of Jiangsu Province(BE2017348)Modern Agriculture Project of Yangzhou City(YZ2018043)
文摘To explore the effects of breeds,number of nurturing squabs,and temperature on nest feed conversion ratio and analyze the effects of number of nurturing squabs on parent pigeon body mass,fertility rate,and laying intervals,5 widely used breeds of pigeon were nurtured under the condition of natural laying and hatching in this research.In each breed,24 pair pigeons nurturing 1,2,3,and 4 squabs were chosen to measure the production performance,respectively.The results indicated that different numbers of nurturing squabs had a significant effect on parent pigeon body mass changes and survival rate of 28-d old squabs(P<0.05);the nest feed conversion ratio of breeds nurturing 1 squab(7.58)was extremely significantly higher than those of nurturing 2,3,and 4 squabs(P<0.01);the nest feed conversion ratio of breeds nurturing 2 squabs(4.75)was extremely significantly higher than those of nurturing 3(3.95)and 4 squabs(3.75)(P<0.01);there was no significant difference between breeds nurturing 3 and 4 squabs(P>0.05).Laying intervals of breeds nurturing 4 squabs(43.8 d)were significantly higher than those of nurturing 3(37.4 d),2(35.4 d),and 1(33.8 d)squabs(P<0.05).Nest feed conversion ratio significantly increased with the decrease of environment temperature(P<0.05).The breed showed no effect on the nest feed conversion ratio.In production,nurturing 3 squabs of parent pigeons is appropriate.In some cold areas in winter,cold protection measures should be taken.
文摘试验旨在探究“2+2”生产模式下不同粗蛋白质水平对白王种鸽繁殖性能和乳鸽生长性能的影响。试验选取产蛋性能相近的300日龄健康种鸽168对,随机分为4组,每组7个重复,每个重复6对种鸽,每对种鸽哺育2只乳鸽。试验Ⅰ组、Ⅱ组、Ⅲ组和Ⅳ组分别饲喂粗蛋白质水平为13.43%、15.04%、16.64%和18.25%的饲粮。试验期46 d,其中孵化期18 d (1~18 d),哺乳期28 d (19~46 d)。结果显示,试验Ⅱ组、Ⅲ组产蛋间隔显著低于试验Ⅰ组(P<0.05),试验Ⅲ组种蛋受精率显著高于试验Ⅰ组、Ⅳ组(P<0.05),试验Ⅲ组入孵蛋孵化率极显著高于试验Ⅰ组、Ⅱ组、Ⅳ组(P<0.01)。试验Ⅲ组乳鸽28日龄体重显著高于试验Ⅰ组(P<0.05),乳鸽屠宰率极显著高于试验Ⅰ组(P<0.01),乳鸽胸肌率显著高于试验Ⅰ组、Ⅱ组、Ⅳ组(P<0.05)。试验Ⅱ组、Ⅲ组、Ⅳ组窝料重比1极显著低于试验Ⅰ组(P<0.01)。研究表明,不同粗蛋白质水平影响了种鸽的繁殖性能、乳鸽的生长性能以及窝料重比,在“2+2”生产模式下,建议白王种鸽饲粮适宜粗蛋白质水平为16.64%。
文摘试验旨在探究亲鸽饲粮添加茶多酚对乳鸽生长性能、屠宰性能、肉品质及肌肉抗氧化能力的影响。试验选取120对遗传背景相近、产蛋情况相同的7月龄健康亲鸽随机分为4组,每组6个重复,每个重复5对亲鸽。对照组饲喂基础饲粮,试验Ⅰ~Ⅲ组分别在基础饲粮中添加100、200和400 mg/kg的茶多酚,试验期53 d。测定28日龄乳鸽生长性能、屠宰性能、肉品质及肌肉抗氧化能力。结果显示:与对照组对比,各试验组半净膛率均显著提高(P<0.05),试验Ⅰ组腿肌率显著提高(P<0.05),试验Ⅲ组腹脂率显著降低(P<0.05);各试验组肌肉p H24h值均显著升高(P<0.05),肌肉24 h L^(*)值和b^(*)值以及失水率均显著降低(P<0.05),试验Ⅰ组肌肉45 min和24 h a^(*)值均显著升高(P<0.05),45 min b^(*)值显著降低(P<0.05),肌肉剪切力显著降低(P<0.05),肌肉鲜样水分含量显著降低(P<0.05);试验Ⅲ组乳鸽肌肉干样粗脂肪含量显著降低(P<0.05),肌肉超氧化物歧化酶(SOD)和谷胱甘肽过氧化物酶(GSH-Px)活性均显著升高(P<0.05)。结果表明,亲鸽饲粮添加茶多酚可以提高乳鸽屠宰性能和肌肉抗氧化能力并改善肉品质,400 mg/kg添加量较适宜。
