Aquaculture In Vietnam

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Aquaculture is rapidly growing in Vietnam and Cambodia. Pangasiid catfish production alone exceeded 1 million metric tons in the Mekong Delta of Vietnam in 2008. While especially at the larger commercial farms formulated feed from commercial feed mills provided to these fish, in preparing feed by hand at the farm.,many small farmers still use “trash fish” from the Mekong.Catfish culture has available commercial pellet diets, so getting farmers to shift from small fish to pellets is a socioeconomic issue, since small-scale catfish farmers often depend on on traditional methods and the local availability of small fish. The usual source of that protein in pellet diets is fish meal (FM). Because of the high price of fish meal, and to ease the…show more content…
It is rich in essential amino acids and fatty acids required for optimum fish growth. However, due to over exploitation of natural fishing grounds its availability has terrifyingly condensed in the recent years resulting in incredible increase in its prices. These increasing fishmeal prices moved the scientists to identify the cost effective alternatives of fishmeal (Pham et al., 2008;Lech and Reigh, 2012; Shapawi et al., 2013). Plant by-products are the favorable sources of protein and energy and may be used for the formation of cost effective and environment friendly aqua-feed (Cheng and Hardy, 2002; Hussain et al., 2011a; Khan et al., 2011; Hussain et al., 2015a,b). Cottonseed meal (CSM) as a plant protein sources, generally less cost than fish meal , thus in reducing feed costs replacing fish meal with less expensive plant protein sources would be beneficial (Barros et al., 2002). ). cottonseed meal (CSM) as valued ingredient has long been used for both terrestrial animals (Colin-Negrete et al., 1996) as well as aquatic species diets , because it is easily accessible, less expensive and rich in protein (Pham et al.,…show more content…
Luo et al.,(2006) studied that development of a neutral phytase with improved thermal stability is important for better performance of phytase in fish feed. Liebert and partz,(2007) studied different sources of microbial phytase in plant based low phosphorus diet for nile tilapia may provide different effect on phytate degradation. They conducted experiment using plant based diet of microbial phytase. They observed that phytase supplementation improved protein digestability as well as calcium and phosphorus digestability. Cao et al., (2007) observed application of microbial phytase in fish feed. They observed that phytase leads to improve availability of other minerals and trace elements in fish. Wang et al., (2008) studied effect of phytase pretreatment of soyabean meal and phytase sprayed in diet on growth apparent digestibility coefficient and nutrient excretion of rainbow trout. They observed that FCR and PER were improved while SGR remain unaffected by spraying phytase. They also observed that FCR, PER and SGR were effected by phytase retreatment. They also observed decrease in nutrients excreted in

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