鸭消化器官的生长，并兼论鸟类一般的生长情况

Growth of the digestive organs in ducks with considerations on their growth in birds in general.

Gille U, Salomon F V, Rönnert J

Institute of Veterinary Anatomy, University of Leipzig, Germany.

Br Poult Sci. 1999 May;40(2):194-202. doi: 10.1080/00071669987593.

Abstract

Growth of the oesophagus, proventriculus, gizzard, intestine, liver and pancreas weight was investigated in Mallards, White Pekins, Muscovies and a Muscovy x White Pekin cross. The birds varied in age between hatching and 154 d. The data were analysed by fitting both the Janoschek growth curve and the allometric formula. 2. The growth rate of all organs, except the oesophagus, peaked earlier (30 d for Muscovies and 14 d for the other breeds) than body weight and they grew faster to any given percentage of their final weight. In contrast, oesophagus weight showed growth curve characteristics similar to body weight. 3. Oesophagus weight showed simple, slightly negative allometry. The remaining organs followed complex allometry that can approximately be described by 2 allometric stages. The 1st phase was isometric to positive allometric. The 2nd showed marked negative allometry. 4. These growth patterns are assumed to be generally present in birds.

摘要

研究了绿头鸭、北京鸭、番鸭以及番鸭与北京鸭的杂交种中食管、前胃、砂囊、肠道、肝脏和胰腺重量的增长情况。这些禽类在孵化至154日龄之间年龄各异。通过拟合亚诺谢克生长曲线和异速生长公式对数据进行了分析。2. 除食管外，所有器官的生长速率峰值均早于体重（番鸭为30日龄，其他品种为14日龄），并且它们生长至最终体重的任何给定百分比时速度更快。相比之下，食管重量呈现出与体重相似的生长曲线特征。3. 食管重量呈现出简单的、略为负的异速生长。其余器官遵循复杂的异速生长，大约可由两个异速生长阶段来描述。第一阶段是等速生长至正异速生长。第二阶段呈现出明显的负异速生长。4. 这些生长模式被认为普遍存在于禽类中。