The importance of rest in young domestic fowl
The importance of rest in young domestic fowl
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DOI：
10.1016/j.applanim.2006.06.017
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发表时间：
2007-08-01
影响因子：
2.3
通讯作者：
Atkinson, James L.
中科院分区：
文献类型：
--
作者：
Malleau, Anne E.;Duncan, Ian J. H.;Atkinson, James L.
本项目研究了肉鸡和蛋鸡品系的雏鸡是否会适应允许它们同步休息的模拟育雏周期，以及允许雏鸡休息如何影响生长和维持活动。每个试验设4个试验组，每组10只蛋鸡和4组10只肉鸡。一半的组进行长日照时间表（LD）的19.33小时光（L）：4.67小时黑暗（D）;一半的模拟育雏周期（SBC），其中包括相同的长日照，但交替40分钟的光：40分钟的黑暗时期在整个主光周期。生长速度、增重、体成分和胫长的应变效应显著（P < 0.01），但光照处理间差异不显著（P > 0.10）。所有的小鸡花了很大一部分的前14天休息。SBC组雏鸡休息时间显著高于LD组（P < 0.05）。SBC上的雏鸡具有高度模式化的活动水平，其不损害体重增加或饲料效率。(c)2006 Elsevier B. V.保留所有权利。
This project investigated whether or not chicks of broiler and layer strains would adapt to a simulated brooding cycle which allowed them to rest synchronously, and how allowing the chicks to rest would affect growth and maintenance activities. There were four trials with four groups of 10 layer chicks and four groups of 10 broiler chicks in each trial. Half the groups were subjected to a long-day schedule (LD) of 19.33 h light (L):4.67 h dark (D); half to a simulated brooding cycle (SBC) which consisted of the same long day but with alternating 40 min light:40 min dark periods throughout the main light period. There were significant strain effects for growth rate, gain:feed, body composition and shank length (P < 0.01); however, no differences were found between lighting treatments (P > 0.10). All chicks spent a large proportion of the first 14 days resting. Chicks on the SBC rested more than chicks on the LD (P < 0.05). Chicks on the SBC had highly patterned levels of activity which did not compromise weight gain or feed efficiency. (c) 2006 Elsevier B.V. All rights reserved.