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Abstract
Chemical composition and feeding expirements of canola oils and meals from six varieties cultivated in Egypt (Pactol and Seru 4 ) , and in Japan (Tohoku 95 , Kirariboshi , Oominatane and Kizakinonatane ) were carried out . Oliec acid was the predominant fatty acid ; erucic acid – which causes some deleterious effects in the body – was found in all varieties of a high level in those cultivated in Egypt (Pactol and Seru 4 ) . Canola meals contain high levels of total glucosinolates except Kirariboshi . Also aliphatic glucosinolates – with which the anmtinutritional effects of glucosinolates were associated – were predominant in all varieties . The histopathological examination of rats ( fed Egyptian canola oils meals ) showed great damage in the tissues of some organs including liver , small intestine , spleen , heart and kidney . Also , the results showed higher levels of GOT , GPT , SAP, cholesterol and Createnine. Egg production and egg weight were depressed in laying hens fed diets contaning Egyptian canola meals as a source of proteins . This depression was attributed to the high level of aliphatic glucosinolates in canola meals.