Ahmed Ismail Mehrim

In commercial aquaculture, the cost of feed is the main problem as it constitutes up to 60% of the total cost of production1. Hence, many researchers examined the use of substitute protein and lipid sources, especially the vegetable sources to replace fish meal and fish oil (FO) that are the cheaper, leading to reduce the feed cost2,3. Lipid is considered one of the most important compon ...

INTRODUCTIONHerbal medicinal products are widely used around the world (Jordan et al., 2010). A growing interest has emerged in using herbs in animal feeds by both researchers and feed companies (Logambal and Michael, 2000). Since ancient times, garlic (Allium sativum)has been used worldwide as a seasoning, spices, and herbal remedies or folk medicine (Rivlin, 2001).Garlic has been used in ancient ...

INTRODUCTIONMost of the Egyptian wild (marine, brackish, and fresh) water bodies is contaminated with agricultural, industrial, and urban drainage, which is responsible for their water and fish pollution with different heavy metals (Abdelhamid et al., 2006a and 2013 a&b) at levels exceeding the Egyptians’ tolerance limits (ES, 1993 and Abdelhakeem et al., 2002). Heavy metals pollute ...

INTRODUCTIONCulture of African catfish, Clarias gariepinus has received considerable attention since the early 1970s and 1980s (Clay, 1981). African catfish is a suitable alternative to tilapia in subsistence fish farming in Africa and using low grade feed composed of  some local agricultural by-products, the yields of catfish from ponds could be as much as 2.5 times higher than those of tila ...

INTRODUCTIONTilapia species constitute a major and important item in the Egyptian fish farming. It displays many favourable attributes as culture species, on the basis of its general hardness, resistance to diseases, high yield potential and ability to grow on a wide range of natural and cheap artificial foods. Additionally, it also can withstand low oxygen concentrations, overcrowding, tolerate d ...

INTRODUCTIONTilapia species constitute a major and important item in the Egyptian fish farming. It displays many favourable attributes as culture species, on the basis of its general hardness, resistance to diseases, high yield potential and ability to grow on a wide range of natural and cheap artificial foods. Additionally, it also can withstand low oxygen concentrations, overcrowding, tolerate d ...