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Effect of intensity of lighting on egg production and ovipositional rhythm in Japanese quail

光照强度对日本鹌鹑产蛋量和产卵节律的影响

基本信息

批准号：
61560311
负责人：
KOBAYASHI Shin
金额：
$ 1.28万
依托单位：
Grant-in Aid for Scientific Research
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1986
资助国家：
日本
起止时间：
1986 至 1987
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-61560311/
关键词：
Poultry Egg production Japanese quail Photoperiod 照度リズム松果体メラトニン

项目摘要

This experiment was conducted from 1986 to 1987 to clarify the relationship between the egg production in Japanese quail(Coturnix coturnix Japonica) and the intensity of lighting. Hitherto, the intensity have not been considered as an important environmental factor on the egg production of poultry. Results of the experiments showed that the light intensity greatly affected on the egg productivity of Japanese quail, well as photoperiod. The results are summarized as follow;1. Results obrained in 1986Experiment I: Using 120 birds, the rates of egg-laying and ovipositional rhythm of Japanese quail were investigated for 13 weeks under the 3 confitions of photo-intensity, 1500 lux, 770 lux, and 77 lux. Under the intensity of 1500 and 770 lux, the rates were about 95 %, while under the lowest intensity, the rate of was 89 %, significantly lower at 5 % level. Also the degree of entrainment of ovipositional rhythms was lower under the lowest photo-intensity.Experiment II: Hens of 77 were examined the effect of lower level of intensity on egg production and ovipositional rhythm under the 3 conditions of 55-75 lux, 25 lux, and 6 lux. The hens reared at the lowest intensity produced fewer egg, significantly lower at 1 % level than group under 55-75 lux, and showed a free running ovipositional rhythm.2. Results obtained in 1987Experiment I: Using 144 birds, the rates of egg-laying and ovipositional rhythm were investigated for 20 weeks under 800 lux, 400 lux, 200 lux, and 50 lux. Under the high intensity of 800 lux, the rate of laying was high during the first 4 weeks, and then decreased with time. Contrarily, there was less change and kept high level in the rate of laying under 400 lux and 200 lux during 20 weeks.Experiment II: The enhansing effect of light intensity on the egg production became more obvious when the hens were exposured to the high intensity during the initial half or middle period of lighting.

本试验于1986~1987年间进行，旨在阐明日本鹌鹑(Coturnix Coturnix Japan)产卵量与光照强度的关系。到目前为止，强度还没有被认为是影响禽蛋生产的一个重要环境因素。试验结果表明，光照强度对日本鸣禽的产蛋率影响较大，光周期对其产蛋率影响较大。主要研究结果如下：1.1986年的观察结果。试验一：在光照强度、1500勒克斯、770勒克斯和77勒克斯三种光照条件下，对120只日本鸣禽的产蛋率和产卵节律进行了13周的观察。在1500和770勒克斯强度下，受精卵的受精率约为95%，而在最低受照强度下，受精卵受精率为%，显著低于5%水平。试验二：在55~75勒克斯、25勒克斯和6勒克斯3种光照条件下，研究了较低光照强度对77只蛋鸡产蛋量和产卵节律的影响。低强度饲养的母鸡产蛋量较少，在1%水平上显著低于55-75勒克斯组，并表现出自由奔跑的产卵节律。试验一：用144只鸡，在800勒克斯、400勒克斯、200勒克斯和50勒克斯的条件下，连续20周观察产蛋率和产卵节律。在800lux的高强度下，产蛋率在前4周内较高，然后随着时间的延长产蛋率下降。相反，400勒克斯和200勒克斯的产蛋率在20周内变化较小，并保持在较高水平。试验二：光照强度对蛋鸡产蛋量的提高作用在光照前半期或中期的高强度下表现得更加明显。