摘要
选取7月龄银王鸽亲鸽50对,饲喂基础饲粮。幼鸽由亲鸽以“2+4”模式哺喂。采集1、4、7、14和21日龄30只幼鸽鸽乳,测定其常规营养成分、活性物质,分析微生物多样性。结果表明,鸽乳中免疫球蛋白A(IgA)、免疫球蛋白G(IgG)和免疫球蛋白M(IgM)在1~7日龄下降,随后上升,呈显著差异(P<0.01)。1~7日龄鸽乳中,氨基酸中谷氨酸(Glu)和天冬氨酸(Asp)含量较高,脂肪酸中油酸(C18:1)含量最高。鸽乳微生物菌群中,各日龄段中优势菌门为厚壁菌门(Firmicutes)、放线菌门(Actinobacteriota)和拟杆菌门(Bacteroidota)。属水平中,1日龄中韦荣氏菌属(Veillonella)和拟杆菌属(Bacteroides)丰度显著高于其他日龄(P<0.01),4日龄中双歧杆菌属(Bifidobacterium)和普雷沃氏菌属(Prevotella)丰度显著高于其他日龄(P<0.01)。综上,随日龄增长,鸽乳中免疫球蛋白在1~7日龄降低,随后升高。鸽乳中韦荣氏菌属、拟杆菌属、双歧杆菌属和普雷沃氏菌属等在维持幼鸽肠道内环境稳定和促进物质消化吸收等方面发挥重要作用。
Fifty pairs of 7-month-old Silver King pigeon parents were selected for the experiment and fed a basic diet.The young pigeons were fed by their parents in a"2+4"mode.The pigeon milk of 30 pigeons at 1,4,7,14,and 21 days of age was collected to determine the conventional nutrients,active substances and microbial diversities.The results showed that immunoglobulin A(IgA),immunoglobulin G(IgG)and immunoglobulin M(IgM)in pigeon's milk decreased from 1 day to 7 days of age,then increased and showed significant differences(P<0.01).Glutamic acid(Glu)and aspartic acid(Asp)contents were higher in pigeon's milk from 1 day to 7 days of age,and oleic acid(C18:1)content was the highest among fatty acids.The dominant phyla in each day-age group were Firmicutes,Actinobacteriota and Bacteroidota.At the genus level,the abundance of microflora in pigeon milk was significantly higher in Veillonella and Bacteroides at 1 day of age(P<0.01),and in Bifidobacterium and Prevotella at 4 days of age(P<0.01).In conclusion,as age increased,the immunoglobulin in pigeon milk decreased at 1 day to 7 days of age and then increased with increasing age.The genera of Veillonella,Bacteroides,Bifidobacterium,Prevotella,etc.in pigeon milk played important roles in maintaining the stability of the intestinal environment and promoting digestion and absorption of substances in young pigeons.
作者
伏志奇
古彬卉
梁玉文
敖娜
黄燕华
付晶
FU Zhiqi;GU Binhui;LIANG Yuwen;AO Na;HUANG Yanhua;FU Jing(Institute of Animal Healthy Breeding,Zhongkai University of Agriculture and Engineering,Guangzhou 510225,China;College of Animal Science and Technology,Zhongkai University of Agriculture and Engineering,Guangzhou 510225,China;Guangdong Laboratory for Lingnan Modern Agriculture,Guangzhou 510642,China)
出处
《东北农业大学学报》
CAS
CSCD
北大核心
2023年第12期60-71,共12页
Journal of Northeast Agricultural University
基金
广东省重点领域研发计划(2020B0202080002)
广东省教育厅创新团队项目(2020KCXTD019)
省级农业科技创新推广及农业资源与生态环境保护建设项目(2021KJ115,2022KJ115)
广州市农村科技特派员项目(20212100052)。
关键词
鸽乳
营养成分
活性物质
氨基酸
脂肪酸
微生物多样性
pigeon milk
nutrient
active substance
amino acid
fatty acid
microbial diversity
