EFFECTS OF 17 a-METHYLTESTOSTERONE ON GROWTH PERFORMANCE AND SOME PHYSIOLOGICAL CHANGES OF NILE TILAPIA, OREOCHROMIS NILOTICUS L.) FINGERLLNGS
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چکیده
منابع مشابه
INFLUENCE OF WATERBORNE CADMIUM ON THE GROWTH AND IMMUNE-PHYSIOLOGICAL PARAMETERS OF NILE TILAPIA (Oreochromis niloticus)
Nile tilapia, Oreochromis niloticus (65.2±2.2 g) were randomly distributed into 12 glass aquaria to represent 4 treatments (3 replicates per treatment). Fish were exposed to cadmium chloride at concentrations of 0.0 (control), 0.05 (T1), 0.10 (T2) and 0.15 mg L -1 (T3) for 4 weeks. After the first, third and fourth week, fish were immediately anesthetized and blood was collected. Fish weight wa...
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The effect of salinity (0, lO and 20%o, water temperature 28 ± l oC) on food consumption and growth of juvenile Nile tilapia, Oreochromis niloticus L. (9.94 ± 0.15 g) were investigated by feeding group of 20 fish at 2% body weight day·• Individual food consumption was measured using X-radiography. There were no significant differences in growth or white muscle protein concenrrarions among group...
متن کاملVisual communication stimulates reproduction in Nile tilapia, Oreochromis niloticus (L.).
Reproductive fish behavior is affected by male-female interactions that stimulate physiological responses such as hormonal release and gonad development. During male-female interactions, visual and chemical communication can modulate fish reproduction. The aim of the present study was to test the effect of visual and chemical male-female interaction on the gonad development and reproductive beh...
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One of the most common techniques for producing mono-sex populations is steroid-induced sex inversion. This involves the administration of synthetic androgens (to produce male populations) or estrogens (to produce female populations). Several methods of steroid administration are possible, including injection, microencapsulation, feeding of steroid, and immersion of fry in steroid solutions. Th...
متن کاملEFFECTS OF DIETARY NUCLEOTIDES ON GROWTH, IMMUNOLOGY, AND DISEASE RESISTANCE OF JUVENILE NILE TILAPIA (Oreochromis niloticus)
Effects of Dietary Nucleotides on Growth, Immunology, and Disease Resistance of Juvenile Nile Tilapia (Oreochromis niloticus). (December 2011) Maritza Anguiano, B.S., Texas A&M University Co-Chairs of Advisory Committee: Dr. Delbert Gatlin Dr. Alejandro Buentello In order to improve production efficiency and profitability in tilapia aquaculture, further research is needed to develop methods to ...
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ژورنال
عنوان ژورنال: Egyptian Journal of Aquatic Biology and Fisheries
سال: 2002
ISSN: 2536-9814
DOI: 10.21608/ejabf.2002.1736