The effect of ascorbic acid supplementation in broodstock feed on reproduction of rainbow trout (Salmo gairdneri)

Autor: Kjartan Sandnes, Olaf R. Brækkan, Yngve Ulgenes, Finn Utne
Rok vydání: 1984
Předmět:
Zdroj: Aquaculture. 43:167-177
ISSN: 0044-8486
DOI: 10.1016/0044-8486(84)90019-x
Popis: Two experimental diets differing in supplementation of ascorbic acid and a third commercial diet were fed to rainbow trout broodstock. A supplementation level of 115 mg ascorbic acid per kg significantly increased the number of hatching eggs compared to eggs from fish without dietary ascorbic acid supplementation. Fish reared on the commercial diet gave eggs of similar quality as from the ascorbic acid supplemented experimental feed. The results indicate that ascorbic acid is essential for reproduction in rainbow trout. Broodstock fish should be fed adequate amounts of the vitamin to provide eggs with more than 20 μg ascorbic acid/g.
Databáze: OpenAIRE