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  • Title: The effect of lutalyse on the training of sexually inexperienced boars for semen collection.
    Author: Kozink DM, Estienne MJ, Harper AF, Knight JW.
    Journal: Theriogenology; 2002 Sep; 58(5):1039-45. PubMed ID: 12212885.
    Abstract:
    The objective was to determine if i.m. treatments of lutalyse (PGF2alpha; dinoprost tromethamine salt) expedited the training of sexually inexperienced boars for semen collection. Lean-type, terminal-line boars (n = 40; 177.4 +/- 2.4 day of age and 112.8 +/- 2.0 kg body weight) that had not previously experienced natural mating were utilized. Boars were moved individually twice weekly for 6 weeks (total of 12 training sessions) to a semen collection room equipped with an artificial sow. Upon entering the semen collection room, boars received i.m. treatments of either deionized water (4 ml, n = 10) or lutalyse at doses of 5 mg (n = 10), 10 mg (n = 10), or 20 mg (n = 10), and subsequently received a libido score of 1-5 (1 = no interest in the artificial sow; 5 = mounting artificial sow and allowing semen collection). The percentages of boars successfully trained for semen collection during the experimental period were similar (P > 0.05) for controls (20%) and boars receiving 5 mg (30%), 10 mg (20%), or 20 mg (10%) of lutalyse. Average libido score for boars receiving 10 mg lutalyse (2.35 +/- 0.08) was greater (P < 0.05) than for controls (2.14 +/- 0.06). In summary, lutalyse increased libido scores, but did not affect the number of boars trained for semen collection.
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