畜牧兽医学报2018，Vol.49Issue(5)：971-985,15.DOI:10.11843/j.issn.0366-6964.2018.05.012
不同早期断奶日龄对舍饲肉用羔羊胃组织形态发育变化的影响
Effect of Different Early Weaned Day on Morphological Development of Stomach for Housed Lambs
摘要
Abstract
The objective of this study was to investigate the effect of early weaned on morphological development of stomach for housed lambs.Fifty-five male lambs (Gansu modern breeding sheep group,singleton) were divided into 3 treatments,15 animals were used in group A (weaned at 28 d of age) and B (weaned at 42 d of age),respectively,25 suckling lambs were used in group C (control).All lambs were raised with the supplementary feed from 7 d of age.Lambs were killed and sampled from the group A and B at 0,7,14 days after weaned,respectively,and lambs in the control(5 lambs) were killed and sampled at the same time.The morphological indexes of rumen ventral sac and dorsal sac,fundus reticuli,omasum,and cardiac,fundus,pyloric of abomasum were measured,respectively.The results showed that,group A was weaned for 7 days,group A and B were weaned for 14 days,the papilla height of the rumen ventral sac were significantly higher than that of group C(P＜0.05).The growth rate of the papilla height in rumen dorsal sac in group A was higher than that in group B(83.4％ vs.46.9％) at weaned for 14 days.The average papilla height of fundus reticuli in group A and B were higher than that in group C(1 194.0μm vs.632.2μm;953.1 μm vs.661.3 μm).The growth rate of the epithelial thickness in omasum in group A was higher than that in group B (40.6％ vs.31.9％) at weaned for 14 days.And the mucosa thickness of cardiac gland in abomasums in group B was significantly higher than that in group C at weaned for 14 days (P＜0.05).The average submucosa thickness of fundus gland abomasum in group A and B were higher than that in group C (326.8 μm vs.245.2 μm;303.4 μm vs.172.7 μm).And the average muscular thickness of pyloric gland abomasum in group A and B were higher than that in group C(1 218.4 μm vs.1 047.4 μm;1 466.3 μm vs.1 253.7 μm).The result indicated that,with feasible raised and supplied the suited supplementary diet from 7 d of age,there were promotion for morphplogical development of stomach in lambs.And it had better promotion for the lambs weaned at 28 d of age than at 42 d of age for the morphplogical development of stomach.关键词
早期断奶/舍饲羔羊/胃/组织形态/发育Key words
early weaned/confined lamb/stomach/morphological/development分类
农业科技引用本文复制引用
郭江鹏,潘建忠,李发弟,张元兴,杨宇泽,郝正里..不同早期断奶日龄对舍饲肉用羔羊胃组织形态发育变化的影响[J].畜牧兽医学报,2018,49(5):971-985,15.基金项目
现代农业产业技术体系建设专项(CARS-39) （CARS-39）
国家自然科学基金项目(31260564) （31260564）
