机构地区:[1]Feedworks USA, Ltd., Cincinnati, USA [2]Wilson Consulting Service, McFarland, USA [3]Gall Consulting Service, Burlington, USA [4]The Ballard Group, Inc., Cincinnati, USA
出 处:《Open Journal of Animal Sciences》2021年第2期197-207,共11页动物科学期刊(英文)
摘 要:Research findings for supplementing boar stud diets with fish oils are inconsistent. This study was designed to address three possible causes of performance variation of boars to fish oil supplementation: stability of the fatty acid source, level of inclusion and breed of boars tested. Three groups of 87 boars each, from two genetic lines (PIC 337 and PIC 800), were assigned to treatment based on age, mean sperm production (previous 12 weeks), and body condition score. All boars received a corn-soybean meal diet with a commercial fish oil supplement providing 1.83</span><span style="font-family:""> </span><span style="font-family:Verdana;">g/boar/day of docosahexaenoic acid (DHA) as a preconditioning diet. On 10-Aug., 2020, the DHA source was changed to a stabilized starch imbedded source of refined fish oil (Salmate®), providing 1.83</span><span style="font-family:""> </span><span style="font-family:Verdana;">g/b/d for </span><span style="font-family:Verdana;">the </span><span style="font-family:Verdana;">test diet. Two additional levels providing 2.38 and 2.94</span><span style="font-family:""> </span><span style="font-family:Verdana;">g/b/d of DHA were fed for a 9 week pretreatment period and during the test period. Salmate® fed at 2.38</span><span style="font-family:""> </span><span style="font-family:Verdana;">g/b/d of DHA resulted in a reduction in the number of rejected ejaculates (P</span><span style="font-family:""> </span><span style="font-family:Verdana;"><</span><span style="font-family:""> </span><span style="font-family:Verdana;">0.045) by 7.5% and 6.4% compared to the lowest and highest inclusion rates, respectively. There w</span><span style="font-family:Verdana;">ere</span><span style="font-family:Verdana;"> no treatment</span><span style="font-family:Verdana;">s</span><span style="font-family:Verdana;"> by genetic line interactions. A retrospective study of semen production and quality of 77 boars on the Salmate® diet containing 1.83</span><span style="font-family:""> </span><span styleResearch findings for supplementing boar stud diets with fish oils are inconsistent. This study was designed to address three possible causes of performance variation of boars to fish oil supplementation: stability of the fatty acid source, level of inclusion and breed of boars tested. Three groups of 87 boars each, from two genetic lines (PIC 337 and PIC 800), were assigned to treatment based on age, mean sperm production (previous 12 weeks), and body condition score. All boars received a corn-soybean meal diet with a commercial fish oil supplement providing 1.83</span><span style="font-family:""> </span><span style="font-family:Verdana;">g/boar/day of docosahexaenoic acid (DHA) as a preconditioning diet. On 10-Aug., 2020, the DHA source was changed to a stabilized starch imbedded source of refined fish oil (Salmate®), providing 1.83</span><span style="font-family:""> </span><span style="font-family:Verdana;">g/b/d for </span><span style="font-family:Verdana;">the </span><span style="font-family:Verdana;">test diet. Two additional levels providing 2.38 and 2.94</span><span style="font-family:""> </span><span style="font-family:Verdana;">g/b/d of DHA were fed for a 9 week pretreatment period and during the test period. Salmate® fed at 2.38</span><span style="font-family:""> </span><span style="font-family:Verdana;">g/b/d of DHA resulted in a reduction in the number of rejected ejaculates (P</span><span style="font-family:""> </span><span style="font-family:Verdana;"><</span><span style="font-family:""> </span><span style="font-family:Verdana;">0.045) by 7.5% and 6.4% compared to the lowest and highest inclusion rates, respectively. There w</span><span style="font-family:Verdana;">ere</span><span style="font-family:Verdana;"> no treatment</span><span style="font-family:Verdana;">s</span><span style="font-family:Verdana;"> by genetic line interactions. A retrospective study of semen production and quality of 77 boars on the Salmate® diet containing 1.83</span><span style="font-family:""> </span><span style
关 键 词:BOARS Docosahexaenoic Acid (DHA) Salmate® Total Sperm Semen Doses
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