Published in Scientific Works. Series C. Veterinary Medicine, Vol. 19 ISSUE 3
Written by Rosalie Adina DOJANA (BALACEANU), G. COTOR, N. CORNILA
In this work it was determined the effects of vegetal fat enriched diets on the young rabbit skeletal muscle composition and structure following a 20 days period of experimental feeding. At the end of the experimental period, the percentage of muscle fat in the Biceps femoris muscle was 1.12% in the control group, 1.21% in 3% supplemented group, 2.38% in 5% supplemented group and 2.54% in the 7% fat supplemented group. The protein content of same muscle for the control group amounted to a rate of 22.92% showing a decreasing trend in the fat supplemented groups: 22.75%, 22.19% and, respectively, 22.02%. Water content of muscle in the control group was 76.87%, while in the experimental groups the values were reduced: 76.31%, 75.53±2.21% and, respectively 75.30±3.09%. The percentage of mineral salts in the control group amounted to a value of 1.27% while the experimental values were as follows: 1.22% in 3% fat supplemented group, 1.16% in the 5% supplemented group and 1.1% in the group of 7% fat supplemented rabbits. The final pH values of same muscle have relatively low growth, proportionally to the concentration of fat, in order of 5.72, 5.60, 5.53, the maximum being in 7% fat supplemented group, while the control group that value amounted to 5.68, 24 hours from sampling. Histological analysis reveals the structure of muscle fibers consisting in increasing the percentage of slow oxidative vs. fast oxidative fibers.
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