The effects of lighting programs on reproductive performance of turkey males. IV

The effects of lighting programs on reproductive ...

Title	The effects of lighting programs on reproductive performance of turkey males. IV
Author(s)	L. Lu, C. Chan, M. McNiven, R. Buckland
Related item	Research Report, Department of Animal Science McGill University
Start page	41
End page	44
Date	1987
Abstract	130-day-old [male][male] of the Quebec line were subjected to 6 lighting treatments from 5 wk of age. The percentage of [male][male] producing semen was significantly affected by light regime. Under 12-h light; 12-h darkness (12L:12D) with constant intensity (10.8 lux) or increasing intensity (5.4-54.0 lux), the percentage of [male][male] producing semen was 71.7 vs. 71.3 for [male][male]under other regimes (12L:12D and decreasing intensity, 16L:8D and constant intensity, 16L:8D and increasing intensity, and 16L:8D and decreasing intensity). Under 16L:8D and increasing intensity, the percentage of [male][male] producing semen (53.2) was significantly lower than under constant light intensity (73.4). The 12:12D regime with increasing intensity resulted in the highest semen volume (0.20 ml). Light regime had no effect on sperm concentration. The highest fertility was observed under 12L:12D with constant or increasing intensity (82.9 and 83.9% resp). It was concluded that lighting programmes of 12L:12D with a constant intensity of 10.8 lux yielded the best overall reproductive performance, followed by 12L:12D with increasing itensity (5.4-10.4-54.0 lux)..

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