Effects of dietary supplementation with an organic source of selenium on characteristics of semen quality and in vitro fertility in boars1

摘要: Semen characteristics in boars fed organic or inorganic sources of Se were assessed 3 experiments. Crossbred randomly assigned at weaning to 1 dietary treatments: I) basal diets with no supplemental (control), II) 0.3 mg/kg from an source (Sel-Plex, Alltech Inc., Nicholasville, KY), and III) supplemented sodium selenite (Premium Selenium 270, North American Nutrition Co. Lewisburg, OH). For Exp. 1, semen was collected (n = 10/dietary treatment) on 5 consecutive days 15 mo age. Effects treatment × day detected for the proportions progressively motile (P 0.02) rapidly moving 0.03) spermatozoa, measures sperm velocity, including path velocity smoothed cell 0.05) average measured a straight line beginning end track 0.05). Negative effects collection motility least pronounced Sel-Plex. Experiment 2 conducted when 17 age, 10 boars/dietary treatment), diluted commercially available extenders, stored 18°C 9 d. percentages 0.01) static amplitude lateral head displacement 0.02), frequency which crossed 0.04), straightness 0.01), size all heads 0.03). In general, cells Sel-Plex better able maintain during liquid storage compared selenite. 3, 6/dietary 23 spermatozoa evaluated d 8 after using vitro fertilization procedures. There tendency effect 0.11) rate Sel-Plex-fed having greatest value (70.7%). The results this study suggest that there are positive supplementation boar may help ameliorate negative motility.