Siopes T D, Pyrzak R
Department of Poultry Science, North Carolina State University, Raleigh 27695-7608.
Poult Sci. 1990 Jan;69(1):142-9. doi: 10.3382/ps.0690142.
In each of two trials, a 2-by-2 factorial arrangement of treatments was utilized to evaluate the reproductive performance of first-year and recycled turkey hens to intermittent lighting (IL) through an egg-laying period of 20 wk. The IL treatment provided 4 h of light per day given as 2 h light:12 h dark:2 h light:8 h dark (2L:12D:2L:8D). This treatment group was compared to controls maintained on 16L:8D. Data were collected for BW, feed intake, feed efficiency, time to first egg, eggs per hen fertility, hatchability, egg weight, and poult weight. Consistent age effects included greater BW, egg weight, and poult weight from recycled hens compared to first-year hens as well as a delay in the onset of laying and a reduction in egg production by six eggs per hen in the recycled hens. Feed intake and feed efficiency were similar in both age groups, Intermittent lighting delayed the onset of laying but increased the rate of lay by eight eggs per hen. Late-season fertility, feed efficiency, and egg weight were significantly increased by the IL treatment. The conclusion was that, for turkey hens, intermittent lighting can effectively improve reproductive performance.
在两项试验中，均采用2×2析因设计处理方式，以评估初产和经产母火鸡在20周产蛋期内接受间歇光照（IL）时的繁殖性能。间歇光照处理组每天提供4小时光照，光照模式为2小时光照：12小时黑暗：2小时光照：8小时黑暗（2L:12D:2L:8D）。该处理组与维持16L:8D光照模式的对照组进行比较。收集的数据包括体重、采食量、饲料效率、开产时间、每只母鸡的产蛋数、受精率、孵化率、蛋重和雏禽体重。一致的年龄效应包括，与初产母火鸡相比，经产母火鸡体重、蛋重和雏禽体重更大，以及开产延迟，且经产母火鸡每只母鸡的产蛋量减少6枚。两个年龄组的采食量和饲料效率相似，间歇光照延迟了开产，但使每只母鸡的产蛋率提高了8枚。间歇光照处理显著提高了后期的受精率、饲料效率和蛋重。结论是，对于母火鸡，间歇光照可有效提高繁殖性能。
