Masculinization in Nile Tilapia (Oreochromis niloticus)
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- Englisch ausgewählt
Fr. 91.90
inkl. gesetzl. MwSt.,
Beschreibung
Produktdetails
Einband
Taschenbuch
Erscheinungsdatum
27.12.2012
Verlag
LAP LAMBERT Academic PublishingSeitenzahl
168
Maße (L/B/H)
22/15/1.1 cm
Gewicht
268 g
Auflage
1. Auflage
Sprache
Englisch
ISBN
978-3-8465-1001-8
The study was planed to determine the effects of different doses of hormone 17a-methyltestosterone (MT) and different protein level of feeding on masculinization, growth performance and meat quality in Nile tilapia (Oreochromis niloticus). The experiment was conducted in two phase. In phase-I, two experiments were performed in six aquaria (50fry/aqurium) with two replicates. In experiment A, aquarium -1 was used as control in which no hormone was given while in aquaria 2 and 3, the MT were given@ 60 and 70 mg MT/ Kg of feed containing 30 % crude protein. In experiment B, aquarium - 4 was used as control in which no hormone was given while in aquaria 5 and 6, the MT were given@ 60 and 70 mg MT/ Kg of feed containing 40 % crude protein. Both the experiments were run parallel in six aquaria for 30 days. After that, the fry were shifted to 6 earthen ponds (phase-II) in which feed was given without hormones on the same protein level as in phase-1, to monitor their growth performance for 183 days. At the final harvest frequency of males and females was determined by morphomatric characteristics and examination of gonads.
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