EFFECT OF OMEGA-3 FATTY ACIDS ON GROWING RABBITS PERFORMANCE
ESRAA MOHAMED ABD ELMEGEED ALI;
Abstract
This study was carried out at Sakha Research Center, at Kafrelsheikh, Agricultural Research Center, Ministry of Agriculture, Egypt, during the period from June to August 2012.
The study was aimed to investigate the effect of different omega-3 fatty acids sources (fish oil, linseed oil and commercial omega-3) on body weight, growth rate, meat quality, meat lipid profile, serum lipid peroxidation, antioxidative status and immune response in and New Zealand White and Baladi Black rabbits. Eighty weaning rabbits, (40 Baladi Black rabbits and 40 New Zealand White rabbits) were maintained from weaning to marketing age (5 to 13 weeks of age). Rabbits were randomly divided into five treatments (16 animals per treatment of both sexes). Average body weight of rabbits at the beginning of experiment was 685±10 grams. Animals were healthy and clinically free of external and internal parasites. Experimental diets were formulated to have nearly similar digestible energy (DE) and crude protein (17% crude protein, 2550 kcal DE per kg diet). The experimental design consisted of five dietary treatments as fallows:- The 1st group was fed the basal diet (control) while the 2nd,3rd, 4thand the 5th groups were fed the basal diet supplemented with 2% fish oil (FO), 2% linseed oil (LO), 1% fish oil plus 1% linseed oil and 1% Commercial Omega-3 (CO), respectively. All diets were supplemented with 200mg vitamin E/kg as α-tocopherol acetate to protect dietary fatty acid from oxidation. The rabbits were weighted at the start of the experiment and then they were weighted weekly in each treatment. Live body weight, body weight gain, feed intake, feed conversion ratio and mortality rate were recorded.
At 10 weeks of age, four representative rabbits from each treatment were intravenously injected with 0.2 ml of 10% suspension of packed Sheep Red Blood Cells (SRBC) to determine humoral immune response (antibody titer production against Sheep Red Blood Cells) and at 11, 12, 13 weeks of age blood samples were collected from marginal ear vein of rabbits to determine humoral immune response. At the end of the experimental period (13 weeks of age), eight rabbits (4 males and 4 females) from each treatment were randomly chosen and fasted approximately for 12 hours and weighed before slaughter (pre-slaughtered weight) to study carcass traits. Blood samples were collected after slaughtering to determine some blood constituents, while meat samples were taken from slaughter rabbits for analysis of meat lipid profile, total cholesterol and meat chemical and physical characteristics.
The study was aimed to investigate the effect of different omega-3 fatty acids sources (fish oil, linseed oil and commercial omega-3) on body weight, growth rate, meat quality, meat lipid profile, serum lipid peroxidation, antioxidative status and immune response in and New Zealand White and Baladi Black rabbits. Eighty weaning rabbits, (40 Baladi Black rabbits and 40 New Zealand White rabbits) were maintained from weaning to marketing age (5 to 13 weeks of age). Rabbits were randomly divided into five treatments (16 animals per treatment of both sexes). Average body weight of rabbits at the beginning of experiment was 685±10 grams. Animals were healthy and clinically free of external and internal parasites. Experimental diets were formulated to have nearly similar digestible energy (DE) and crude protein (17% crude protein, 2550 kcal DE per kg diet). The experimental design consisted of five dietary treatments as fallows:- The 1st group was fed the basal diet (control) while the 2nd,3rd, 4thand the 5th groups were fed the basal diet supplemented with 2% fish oil (FO), 2% linseed oil (LO), 1% fish oil plus 1% linseed oil and 1% Commercial Omega-3 (CO), respectively. All diets were supplemented with 200mg vitamin E/kg as α-tocopherol acetate to protect dietary fatty acid from oxidation. The rabbits were weighted at the start of the experiment and then they were weighted weekly in each treatment. Live body weight, body weight gain, feed intake, feed conversion ratio and mortality rate were recorded.
At 10 weeks of age, four representative rabbits from each treatment were intravenously injected with 0.2 ml of 10% suspension of packed Sheep Red Blood Cells (SRBC) to determine humoral immune response (antibody titer production against Sheep Red Blood Cells) and at 11, 12, 13 weeks of age blood samples were collected from marginal ear vein of rabbits to determine humoral immune response. At the end of the experimental period (13 weeks of age), eight rabbits (4 males and 4 females) from each treatment were randomly chosen and fasted approximately for 12 hours and weighed before slaughter (pre-slaughtered weight) to study carcass traits. Blood samples were collected after slaughtering to determine some blood constituents, while meat samples were taken from slaughter rabbits for analysis of meat lipid profile, total cholesterol and meat chemical and physical characteristics.
Other data
| Title | EFFECT OF OMEGA-3 FATTY ACIDS ON GROWING RABBITS PERFORMANCE | Other Titles | تأثير الأحماض الدهنية أوميجا -۳على أداء الأرانب النامية | Authors | ESRAA MOHAMED ABD ELMEGEED ALI | Issue Date | 2014 |
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