PGF2alpha facilitates the training of sexually active boars for semen collection
2000
Estienne, M.J. | Harper, A.F.
The objective was to determine the effects of PGF(2alpha) on the training of sexually active boars (i.e., boars experienced with natural mating) to mount an artificial sow for semen collection. Boars were moved to a semen collection pen twice weekly for 4 wk. After entering the pen, boars received im treatment with 10 mg PGF(2alpha) (n = 7) or 2 mL deionized water (n = 7). Boars were classified as trained when after a successful collection, the animals mounted the artificial sow and allowed semen collection on the next scheduled day without first receiving an injection of PGF(2alpha) or deionized water. The semen from 6 of 7 PGF(2alpha)-treated boars and 2 of 7 control boars was collected during the first exposure to the artificial sow (P < .03). After 4 training sessions, 7 of 7 PGF(2alpha)-treated boars and 4 of 7 controls were successfully trained (P < .05). The number of false mounts (mounting artificial sow but not allowing semen collection) per session was lower (P < .07) for PGF(2alpha)-treated boars (.6 +/- 1.0), compared to boars receiving deionized water (3.9 +/- 1.0) or trained boars receiving no treatment (3.4 +/- .7). Reaction time (elapsed time after entering collection pen until the start of ejaculation) was lower (P < .04) for PGF(2alpha)-treated boars (267.4 +/- 63.4 sec), compared to boars treated with deionized water (628.4 +/- 98.3 sec) or boars receiving no treatment (440.4 +/- 46.4 sec). In summary, use of PGF(2alpha) facilitated the training of sexually active boars to mount an artificial sow for semen collection.
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