摘要
[目的]探究“2+2”生产模式下(1对种鸽1个繁殖周期哺育2只乳鸽)不同蛋白质水平对哺育期塔里木鸽种鸽生产性能、消化代谢及血浆生化指标的影响。[方法]选取繁殖性能相近的12~18月龄健康哺育期塔里木鸽种鸽60对,随机分为5组,每组12对,每对种鸽哺育2只乳鸽。试验Ⅰ、Ⅱ、Ⅲ、Ⅳ和Ⅴ组种鸽分别饲喂蛋白质水平为12%、13%、14%、15%、16%的饲粮。预试期3 d,正试期28 d。哺育期结束后,测定种鸽的生产性能和消化代谢,并检测血浆生化指标。[结果]①饲粮蛋白质水平对哺育期种鸽平均日采食量有显著影响,其中试验Ⅱ组种鸽平均日采食量显著高于试验Ⅳ和Ⅴ组(P<0.05),种鸽哺育期体重损失逐渐增加。②随着蛋白质水平的增加,种鸽的粗蛋白质表观消化率逐渐增加。饲粮不同蛋白质水平对种鸽哺育期粗蛋白质表观消化率有显著影响,其中试验Ⅰ组种鸽粗蛋白质表观消化率显著低于试验Ⅳ和Ⅴ组(P<0.05)。③饲粮蛋白质水平对哺育期种鸽血浆中的高密度脂蛋白(HDL)、低密度脂蛋白(LDL)水平均有显著影响,其中试验Ⅲ组种鸽血浆中HDL水平显著低于其他各组,LDL水平显著高于其他各组(P<0.05)。[结论]在本试验条件下,“2+2”生产模式下哺育期塔里木鸽种鸽饲粮蛋白质适宜水平为13%。
[Objective]The objective of this experiment was to investigate the effect of different protein levels on the reproductive performance,digestive metabolism,and plasma biochemical indicators of Tarim pigeons during breeding period under"2+2"production mode,in which a pair of breeding pigeons feeds 2 squabs simultaneously.[Method]60 pairs of healthy Tarim breeding pigeons aged 12-18 months,with similar reproductive performance,were randomly divided into 5 groups,with 12 pairs in each group,and each pair bred 2 squabs.The pigeons in groupsⅠ,Ⅱ,Ⅲ,ⅣandⅤwere fed with different crude protein(CP)levels(12%,13%,14%,15%and 16%).The experiment had a 3-day pre-experimental period and a 28-day experimental period.At the end of the breeding period,the performance,digestion and metabolism and plasma biochemical indicators of pigeons were measured.[Result]①The dietary protein levels significantly affected the average daily feed intake(ADFI)of pigeons during the breeding period,and ADFI of pigeons in groupⅡwas significantly higher than that in groupsⅣandⅤ(P<0.05).The weight loss of pigeons was gradually increased during breeding period.②With the protein levels increased,the apparent digestibility of CP in pigeons was gradually increased.The dietary protein levels significantly affected the apparent digestibility of CP in pigeons during breeding period,and the apparent digestibility of CP in groupⅠwas significantly lower than that in groupsⅣandⅤ(P<0.05).③The dietary protein levels significantly affected the levels of high-density lipoprotein(HDL)and low-density lipoprotein(LDL)in plasma of pigeons during breeding period,the HDL level of pigeons in groupⅢwas significantly lower than that in other groups,and the LDL level of pigeons in groupⅢwas significantly higher than that in other groups(P<0.05).[Conclusion]Under the conditions of this experiment,13%CP was recommended to be applied as the protein dietary requirement of Tarim pigeons during breeding period in"2+2"pattern.
作者
王静
宋丽荣
刘蓁
付睿
王孜
臧长江
李凤鸣
WANG Jing;SONG Lirong;LIU Zhen;FU Rui;WANG Zi;ZANG Changjiang;LI Fengming(College of Animal Science,Xinjiang Agricultural University,Urumqi 830052,China)
出处
《中国畜牧兽医》
CAS
CSCD
北大核心
2024年第8期3301-3310,共10页
China Animal Husbandry & Veterinary Medicine
基金
新疆维吾尔自治区重点研发项目(2022B02057-3)
新疆农业大学大学生创新项目。
关键词
饲粮蛋白质水平
塔里木鸽
哺育期
生产性能
消化代谢
血浆生化指标
dietary protein levels
Tarim pigeons
breeding period
reproductive performance
digestion and metabolism
plasma biochemical indicators
