comparing the growth pattern of monosex tilapia with mixed-sex fish under various culture systems. Tilapia all male culture is used for mono-sex culture because they have a higher growth rate and a larger max size than females. Hatcheries like Lakeway Tilapia offer commercial farmers services such as holding fingerlings until they are 30 grams each. Typically, males are preferrred because they grow to a larger size and have greater profit potential. Materials and Methods: This study was continued on total 300 monosex tilapia, (Oreochromis niloticus L.) through 16 weeks under four treatments (T) with triplication of four different feed variety (Quality … With the purpose of achieving more productivity in growing tilapia, Oreochromis niloticus, at the unit time, it is important to produce monosex culture that constitutes totally of males (Mair and Little, 1991). The growth of monosex Tilapia was significantly higher (p<0.05) compared to mixed sex Tilapia in all monthly growth check. The results of the present study revealed that the growth performance of mono-sex and mixed sex Harvest weight of monosex and mixed sex Tilapia was 133.7 g and 101.5 g, respectively and the difference was significant (p<0.05). It’s important to remember that a big chunk of that 240 days is spent in the hatchery, not in the grow-out. Under good growth conditions, 1-gram fish are cultured in nursery ponds to 1 to 2 ounces (20 to 40 grams) in 5 to 8 weeks and then restocked into grow-out ponds. growth of Nile tilapia during monosex culture. The present study want to know their efficiency in composition and on the growth of tilapia. This study was designed to determine the effect of complete substitution of fish meal (FM) by three plant protein sources including extruded soybean meal (SBM), extruded full-fat soybean (FFSB) and corn gluten meal (CGM) on growth and feed utilization of Nile tilapia Oreochromis niloticus and tilapia galilae Sarothrodon galilaeus. The main species cultured is the Nile tilapia (Oreochromis niloticus), which is popular due to its superior growth rates and ability to grow to large sizes over a wide range of environmental parameters. Tilapia grown in pond culture can have a problem with excess reproduction. Growth performance of mixed sex and male monosex O. niloticus was done in cages at LwandaDisi beach, Lake Victoria, Kenya. Food grade tilapia are simply those tilapia that exhibit the fastest rates of growth. Background and Objective: Many commercial foods are introduced for monosex tilapia culture. To prevent this problem, farmers can use monosex culture by separating the males from females. Its disease resistance and ability to efficiently utilize very diverse food sources also make it an ideal candidate for culture. Male monosex and mixed sex This can lead to stunted growth and lower production rates. Male monosex tilapia cultures are preferred to females because of the differential growth in favour of males. Male monosex Mixed sex Nile tilapia Growth performance ABSTRACT Comparative growth performance of male monosex and mixed sex Nile tilapia (Oreochromis niloticus) was conducted in six earthen ponds each measuring 150 m 2 at the Kenya Marine & Fisheries Research Institute (KM-FRI), Kegati Aquaculture Research Station. Monosex tilapia has great demand and value in the local and international market. Apart from genetics, brood stock management and environmental conditions including the quality and quantity of feed has an influence on the growth performance of tilapia [13,14]. Male monosex fingerlings were sex reversed by feeding newly hatched larvae on feed laced with 17-α-methyl testosterone hormone (MT) for 28 days. Four isonitrogenous of crude protein (ca. Materials and Methods Experimental Design first factor was presence or absence of dietary treatment with 17 MT (monosex and mixed-sex tilapia), the second factor was related to culture system (Cistern, Flow-through, pen and pond). . 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