Comparative evaluation of Carp testis as an alternative to 17 α-Methyltestosterone on Tilapia sex reversal
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چکیده
منابع مشابه
Sex Reversal of Tilapia: 17α-Methyltestosterone Dose Rate by Environment and Efficacy of Bull Testes
Sex reversal of newly hatched tilapia generally is accomplished via oral administration of 17α-methyltestosterone (MT), which has been incorporated into a starter fish feed at 60 mg MT/kg feed (Popma and Green, 1990). Although the use of the 60 mg MT/kg feed dose consistently yields populations comprised of less than 5% females (i.e., > 95% males), this has not been shown to be the optimal dose...
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The aim of the experiment was to compare the effectiveness of sex reversal in mature female rainbow trout using 17 -methyltestosterone (6 ppm-MT) and 11 -hydroxyandrostenedione (20 ppm-OHA). Hormones were administered with the first exogenous feed for up to 60 days. Among the fish treated with OHA, 95% females were reversed into mature neo-males and 1.6% to bisexual individuals. Among the fish ...
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All-male populations are used in tilapia aquaculture because the culture of mixed-sex populations often results in precocious maturation and early reproduction (Mires, 1995). Early maturation shunts energy to gonadal rather than somatic growth. In addition, reproduction in ponds may lead to the harvest of many unmarketable fry. Individuals in mono-sex populations have increased somatic growth r...
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Background: The pomegranate peel extract is a rich source of natural antioxidant and antimicrobial activity. The aim of the present investigation was to evaluate the in vivo antifungal activity of the pomegranate peel extract and to compare it with nystatin against oral candidiasis in Wistar rats.Methods: Thirty-five male Wistar rats, 6 to 8 weeks old and 220 to 250 g in weight, were used for a...
متن کاملTilapia, carp and catfish
Research activities on tilapia focused on Oreochromis niloticus and red tilapia. Experiments include developing new experimental and statistical procedures for strain evaluation, development of a stable reference strain, development of a high-yield red tilapia strain through introgressive hybridization, comparison of fish growth in different environments relevant to aquaculture, development of ...
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ژورنال
عنوان ژورنال: Our Nature
سال: 2015
ISSN: 2091-2781,1991-2951
DOI: 10.3126/on.v12i1.12251