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
本试验旨在研究冬季不同带仔模式对乳鸽屠宰性能、器官指数、血清生化指标、肉品质及肠道发育的影响。选取144对年龄和体重相近、繁殖性能相似的欧洲米马斯白鸽,随机分成3组,每组8个重复,每个重复6对种鸽。各组每对种鸽分别哺育2(2+2组)...本试验旨在研究冬季不同带仔模式对乳鸽屠宰性能、器官指数、血清生化指标、肉品质及肠道发育的影响。选取144对年龄和体重相近、繁殖性能相似的欧洲米马斯白鸽,随机分成3组,每组8个重复,每个重复6对种鸽。各组每对种鸽分别哺育2(2+2组)、3(2+3组)、4只(2+4组)乳鸽。试验期21 d。结果表明:1)2+4组的乳鸽的活重、屠体重、半净膛重、全净膛重、胸肌重、半净膛率、全净膛率和胸肌率均显著低于2+2组和2+3组(P<0.05),2+2组和2+3组之间差异不显著(P>0.05)。2)2+4组的心脏和肌胃重量显著低于2+2组(P<0.05),2+2组和2+3组之间差异不显著(P>0.05)。2+4组的心脏、肝脏和腺胃指数显著高于2+2组和2+3组(P<0.05),2+2组和2+3组之间差异不显著(P>0.05)。各组之间脾脏、胸腺和法氏囊重量和指数均差异不显著(P>0.05)。3)2+4组的胸肌24 h pH和亮度(L*)值显著高于2+2组(P<0.05),胸肌黄度(b*)值和滴水损失显著低于2+2组(P<0.05),2+3组和2+2组之间差异不显著(P>0.05)。4)乳鸽屠体重和胸肌重与胸肌滴水损失呈显著正相关(P<0.05),与胸肌L*值、24 h pH呈显著负相关(P<0.05)。5)2+3组乳鸽空肠绒毛高度(VH)显著高于2+2组(P<0.05),绒毛高度/隐窝深度(VH/CD)显著高于2+2组和2+4组(P<0.05)。2+3组和2+4组乳鸽回肠上皮细胞厚度(ECT)显著低于2+2组(P<0.05)。6)2+3组和2+4组的总利润比2+2组分别增加了36和139元。由此可见,带仔数的增加可以提高鸽场的经济效益,但带仔数过高会提高乳鸽死亡率,乳鸽的生长速度和肉品质也会受到负面影响。综合上述指标,建议冬季乳鸽生产采用2+3的带仔模式。展开更多
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
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%。
文摘本试验旨在研究冬季不同带仔模式对乳鸽屠宰性能、器官指数、血清生化指标、肉品质及肠道发育的影响。选取144对年龄和体重相近、繁殖性能相似的欧洲米马斯白鸽,随机分成3组,每组8个重复,每个重复6对种鸽。各组每对种鸽分别哺育2(2+2组)、3(2+3组)、4只(2+4组)乳鸽。试验期21 d。结果表明:1)2+4组的乳鸽的活重、屠体重、半净膛重、全净膛重、胸肌重、半净膛率、全净膛率和胸肌率均显著低于2+2组和2+3组(P<0.05),2+2组和2+3组之间差异不显著(P>0.05)。2)2+4组的心脏和肌胃重量显著低于2+2组(P<0.05),2+2组和2+3组之间差异不显著(P>0.05)。2+4组的心脏、肝脏和腺胃指数显著高于2+2组和2+3组(P<0.05),2+2组和2+3组之间差异不显著(P>0.05)。各组之间脾脏、胸腺和法氏囊重量和指数均差异不显著(P>0.05)。3)2+4组的胸肌24 h pH和亮度(L*)值显著高于2+2组(P<0.05),胸肌黄度(b*)值和滴水损失显著低于2+2组(P<0.05),2+3组和2+2组之间差异不显著(P>0.05)。4)乳鸽屠体重和胸肌重与胸肌滴水损失呈显著正相关(P<0.05),与胸肌L*值、24 h pH呈显著负相关(P<0.05)。5)2+3组乳鸽空肠绒毛高度(VH)显著高于2+2组(P<0.05),绒毛高度/隐窝深度(VH/CD)显著高于2+2组和2+4组(P<0.05)。2+3组和2+4组乳鸽回肠上皮细胞厚度(ECT)显著低于2+2组(P<0.05)。6)2+3组和2+4组的总利润比2+2组分别增加了36和139元。由此可见,带仔数的增加可以提高鸽场的经济效益,但带仔数过高会提高乳鸽死亡率,乳鸽的生长速度和肉品质也会受到负面影响。综合上述指标,建议冬季乳鸽生产采用2+3的带仔模式。
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.
