Siopes T D, Parkhurst C R, Baughman G R
Poult Sci. 1986 Dec;65(12):2221-5. doi: 10.3382/ps.0652221.
Growth performance of tom turkeys under intermittent lighting was examined. Light treatments were given from 2 to 22 weeks of age and consisted of a control group maintained on 23L:1D and three intermittent lighting regimens: IL:3D repeated 6 times daily, .25L:.75D repeated 24 times daily, and 3L:11D:3L:7D repeated daily. Body weight, feed consumption, feed conversion, mortality, and leg abnormalities were recorded. Body weights of control toms at 18 and 22 weeks of age were significantly smaller than those of each of the intermittent light treatment groups. Weight differences ranged from .7 to 1.3 kg. Body weights among the three intermittent light treatments were similar. Although feed conversions at all five measurement periods were numerically better in all of the intermittent light treatment groups than the control group, differences were not significantly different at and beyond 14 weeks of age. Likewise, no significant differences in mortality or leg disorders occurred among the light treatment groups during the study. The results of this study indicate that tom market turkeys can have a better growth performance, along with a savings in electricity used for lighting, when raised under intermittent lighting rather than under a single, continuous photoperiod of 23 hr/day.
研究了间断光照条件下雄火鸡的生长性能。光照处理从2周龄持续到22周龄，包括一个维持23小时光照：1小时黑暗的对照组和三种间断光照方案：每天重复6次的IL:3D、每天重复24次的0.25L:0.75D以及每天重复的3L:11D:3L:7D。记录了体重、采食量、饲料转化率、死亡率和腿部异常情况。18周龄和22周龄时，对照组雄火鸡的体重显著低于各间断光照处理组。体重差异在0.7至1.3千克之间。三种间断光照处理之间的体重相似。尽管在所有五个测量期，所有间断光照处理组的饲料转化率在数值上均优于对照组，但在14周龄及之后，差异并不显著。同样，在研究期间，光照处理组之间的死亡率或腿部疾病也没有显著差异。本研究结果表明，与在每天23小时单一连续光照周期下饲养相比，雄商品火鸡在间断光照下饲养时，生长性能更好，同时可节省照明用电。
