0~56日龄陕北白绒山羊解剖特点及胃肠道参数变化规律探究

doi:10.16431/j.cnki.1671-7236.2017.05.012

《中国畜牧兽医》 ›› 2017, Vol. 44 ›› Issue (5): 1338-1345.doi: 10.16431/j.cnki.1671-7236.2017.05.012

0~56日龄陕北白绒山羊解剖特点及胃肠道参数变化规律探究

张科, 李碧波, 童涛, 陈玉林

西北农林科技大学动物科技学院, 杨凌 712100

收稿日期:2016-11-01 出版日期:2017-05-20 发布日期:2017-05-18
通讯作者: 陈玉林 E-mail:chenyulindk@163.com
作者简介:张科(1993-),男,甘肃白银人,硕士生,研究方向:瘤胃微生物,E-mail:zhangke0702@foxmail.com
基金资助:
国家绒毛用羊产业技术体系（CARS-40-13）；公益性行业（农业）科研专项（201303059）

Anatomical Features and Changing Rule of Gastrointestinal Parameter in Shaanbei White Cashmere Goat at 0 to 56 days of Age

ZHANG Ke, LI Bi-bo, TONG Tao, CHEN Yu-lin

College of Animal Science and Technology, Northwest Agriculture and Forestry University, Yangling 712100, China

Received:2016-11-01 Online:2017-05-20 Published:2017-05-18

摘要/Abstract

摘要：

试验旨在研究0~56日龄羔羊胃肠道全重、相对净重、容积、长度等参数的变化规律。试验选用24只陕北白绒山羊，按照完全随机试验设计分为8组，每组3只，分别在0、3、7、14、21、28、42、56日龄屠宰、取样，测定各阶段羔羊体况发育情况及胃肠道全重、相对净重、容积及长度等参数。结果显示，除了皱胃外，各胃室相对净重均快速增长，7日龄后增速较高，在56日龄时，瘤胃相对净重从0日龄的29.34%提升到52.53%，网胃从11.83%到14.77%，瓣胃从6.54%上升到9.34%，而皱胃相对净重从52.29%下降到23.36%；小肠各部位净重均保持增长，十二指肠相对净重在0~56日龄整个阶段均保持在3.5%左右，而空肠均保持在90%左右，回肠相对净重在14日龄之前保持在1%左右，在14日龄之后保持在5%左右；大肠的各部位全重迅速增大，盲肠从0日龄的5.29 g增长到56日龄的43.31 g，结肠从11.67 g增长到200.45 g，直肠从3.03 g增长到53.02 g，前期增长缓慢，从28日龄开始，大肠各部位全重迅速增重。综上所述，28日龄是羔羊全面发育的一个界点，28日龄后，其消化道参数快速增长，特别是具有纤维物质消化能力的瘤胃、回肠、盲肠、结肠等部位，结合各方面因素可以预测，28日龄断奶具有可行性。

关键词: 陕北白绒山羊; 胃肠道参数; 净重; 容积

Abstract:

This study was aimed to investigate the changing rule of gastrointestinal full weight,relative net weight,volume and length of the lamb at 0 to 56 days of age.24 Shaanbei White cashmere goat were divided into eight groups (3 goats per group),which were slaughtered for collecting sampling at 0,3,7,14,21,28,42 and 56 days of age, respectively.The growth development in different stages and the gastrointestinal tract parameters such as total weight,relative net weight,volume and length were determined. The results showed that the relative net weight of stomach room increased rapidly apart from abomasum. The growth rate was relatively higher after 7 days of age.The ratio of rumen, reticulum and omasum net weight to full stomach net weight increased from 29.34% to 52.53%,11.83% to 14.77% and 6.54% to 9.34%,while that of abomasum decreased from 52.29% to 23.36%. The net weight of each parts of the small intestine was growing,and the percentage of duodenum net weight to whole small intestine weight remained about 3.5% during the whole experiment,that of jejunum was about 90%,while that of ileum remained around 1% before 14 days of age and 5% after 14 days of age.The total weight of each part of the large intestine increased rapidly. Specially,the total weight of caecum, colon and rectum increased from 5.29 g to 43.31 g,11.67 g to 200.45 g and 3.03 g to 53.02 g.There was a slow growth in the early period,then the total weight of each part of the large intestine increased rapidly from 28 days of age. In conclusion,it was a critical point of goat all-round development in 28 days of age, and the digestive tract parameters would rapidly grow after 28 days of age, especially the organs like rumen,ileum,caecum and colon which could effectively digest the fiber. Thus,we suggested that 28 days old was practicable for weaning combining various factors.

Key words: Shaanbei White cashmere goat; gastrointestinal tract parameters; net weight; volume

中图分类号:

S827

张科, 李碧波, 童涛, 陈玉林. 0~56日龄陕北白绒山羊解剖特点及胃肠道参数变化规律探究[J]. 《中国畜牧兽医》, 2017, 44(5): 1338-1345.

ZHANG Ke, LI Bi-bo, TONG Tao, CHEN Yu-lin. Anatomical Features and Changing Rule of Gastrointestinal Parameter in Shaanbei White Cashmere Goat at 0 to 56 days of Age[J]. , 2017, 44(5): 1338-1345.

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0~56日龄陕北白绒山羊解剖特点及胃肠道参数变化规律探究

Anatomical Features and Changing Rule of Gastrointestinal Parameter in Shaanbei White Cashmere Goat at 0 to 56 days of Age

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