EFFECT OF FEEDING AMARANTHUS LEAF MEAL ON EGG AND POULTRY MEAT CHOLESTEROL LEVELS
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Date
2003-08
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SRI VENKATESWARA VETERINARY UNIVERSITY , TIRUPATI – 517 502 (A.P) INDIA
Abstract
ABSTRACT :
Egg and poultry meat are providing high amount of protein and fat with high biological value. Increased awareness of dietary fats on development of coronary heart disease, research has now been directed to reduce the cholesterol levels of egg and poultry meat by manipulating diets fed to the birds.
Amaranth seed has already proven to be hypocholesterolemic agent in humans and experimental animals. Hence, this study was taken up with an aim to see the effects of Amaranthus Leaf Meal (ALM) (A. tricolor) on cholesterol levels in both egg and poultry meat.
The experimental diets were formulated to contain 0, 2.5, 5.0, 7.5 and 10 per cent ALM. The experiments were conducted in both layers and broilers. Zero per cent was considered as control diet.
In the first experiment sixty layers of 45 weeks age were randomly grouped to contain 4 birds in each replicate and 3 replicates for each treatment. Effect of supplementation of ALM on feed intake, feed efficiency, egg production, egg quality traits, cholesterol, livability and economics were studied during the experimental period of 6 weeks. Birds were fed on control diet for 3 weeks before and 3 weeks after the experimental period and the egg cholesterol levels in both pre and post experimental periods were also estimated.
Supplementation of ALM did not effect the feed intake, egg production, feed efficiency, body weight, egg weight and egg equality studies when compared with control. However, inclusion of ALM diets in layers when compared with control have significantly (P < 0.01) decreased egg cholesterol and improved the yolk color. But a significant increase in cholesterol level during post experimental period (Birds were fed on control diet).
In experiment-II, one hundred and fifty, day old broiler chicks were randomly allotted into 5 treatment groups, each with 3 replicates and each of which contain 10 female broilers. Effect of the supplementation of ALM on feed intake, body weight, feed efficiency, carcass yield, giblet yield, serum biochemical profile and meat biochemical profile were studied during the experimental period of 6 weeks.
Supplementation of ALM did not effect the feed intake, feed efficiency, carcass yield, giblet yield, serum protein, Albumi, Globulin A:G ratio, serum HDL-C and Triglyecrides; breast muscle VLDL-C and fat; thigh muscle protein, HDL-C, LDL-C. The lowest body weight gain was observed in the 10 per cent ALM inclusion. However, the inclusion of ALM in broiler diets have significantly decreased serum cholesterol and LDL-C, breast muscle cholesterol, LDL-C and triglyceride; thigh muscle cholesterol, LDL-C, triglyceride and thigh muscle fat values, but a significant increase in serum VLDL-C, breast muscle HDL-C and breast muscle protein values were observed.
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Keywords
AMARANTHUS LEAF MEAL; EGG; POULTRY MEAT; CHOLESTEROL LEVELS