The effect of lutalyse on the training of sexually inexperienced boars for semen collection.
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.
Kozink
Daniel M
DM
Department of Animal and Poultry Sciences, Virginia Polytechnic Institute and State University, Blacksburg, USA.
Estienne
Mark J
MJ
Harper
Allen F
AF
Knight
James W
JW
D000818:Animals; D015237:Dinoprost / Q000031:analogs & derivatives / Q000494:pharmacology*; D007989:Libido / Q000187:drug effects; D008297:Male; D012661:Semen; D012726:Sexual Behavior, Animal / Q000187:drug effects*; D013552:Swine / Q000502:physiology*; D020858:Tissue and Organ Harvesting / Q000662:veterinary*
D015237:Dinoprost; C010714:dinoprost tromethamine