E Vitamininin Karadeniz Alabalığı (Salmo labrax) Damızlık Stoklarında Üreme Performansına Etkisi

Abstract

SummaryThis study was conducted to examine the effects of feeding diets, different dose of vitamin E contains, on female and male Black Sea trout's (Salmo labrax) reproductive performance. Broodfish were fed with dry feed contained 100 (control), 250, 500, 1000 mg kg -1 vitamin E. Milt volume, spermatozoid number, fecundity and egg size were determined. Milt volume and sperm number were positively affected at a dose of 250 and 500 mg kg -1 vitamin E in the diet. A similar positive trend was also observed at the dose of 1000 mg kg -1 . Egg size is not affected by dietary vitamin E dose, but there are positive relationship between total fecundity and dietary vitamin E dose especially at the first stripping (P<0.05).Keywords: Milt, α-tocopherol, Broodstock, Fecundity, Vitamin E Vitamininin Karadeniz Alabalığı (Salmo labrax) Damızlık Stoklarında Üreme Performansına Etkisi ÖzetBu çalışma Karadeniz Alabalığı'nda (Salmo labrax) 6 hafta süreyle, yemlerine farklı dozlarda ilave edilen E vitamini ile beslemenin üremeye etkisini ortaya koymak amacıyla yapılmıştır. Anaç stoktaki balıklar 1 kg yemde 100 mg (kontrol grubu), 250 mg, 500 mg ve 1000 mg olacak şekilde E vitamini ilave edilen yemle beslenmişlerdir. Sperm hacmi, spermatazoa sayısı, fekondite ve yumurta çapı verileri incelenmiştir. Sperm hacmi ve spermatozoa sayısı 250 ve 500 mg E vitamin içeren yemlerle beslenen balıklarda pozitif yönde etkilenmiştir. Benzer ilişki 1000 mg kg -1 dozda da görülmüştür. Yumurta büyüklüğü yemdeki E vitamininden etkilenmezken, özellikle ilk sağımda total fekondite ve vitamin E miktarı arasında pozitif ilişki vardır (P<0.05).

Vitamin E Ameliorates Impaired Ovarian Development, Oxidative Stress, and Disrupted Lipid Metabolism in Oreochromis niloticus Fed with a Diet Containing Olive Oil Instead of Fish Oil

“…Our results show that an OO-containing diet inhibited ovarian development in female tilapia to a certain extent, but VE supplementation at 200 mg/kg in the OO-containing diet increased the GSI and the number of stage III and IV oocytes. In other studies, appropriate VE supplementation was shown to promote the reproductive performance of red swordtail ( Xiphophorus helleri ) [ 16 ] and Black Sea trout ( Salmo labrax ) [ 17 ]. The results of our study suggest that VE at 70 mg/kg in the OO-containing diet was sufficient to meet the growth requirements of female tilapia, but insufficient to meet the demands for ovarian development.…”

“…The addition of dietary VE can also positively affect animal reproduction. For example, dietary VE was shown to promote ovarian development, improve the spawning rate, and increase larval quality in red swordtail ( Xiphophorus helleri ) [ 16 ] and Black Sea trout ( Salmo labrax ) [ 17 ]. In addition, VE plays a vital role in the regulation of lipid metabolism and a deficiency of VE in the diet has been found to result in abnormal lipid deposition in fish [ 13 , 18 ].…”