Eighty one (81) weaned rabbits of mixed breeds and sexes (male and female) were randomly allotted to nine treatment groups with nine rabbits per treatment. Each treatment had three replicates with three rabbits per replicate. Processed tallow was included in the diets as a source of protein which was set at 16 % CP. The control diet had 100 % palm kernel cake (PKC) and 0 % tallow seed meal (TSM). Diets 1-4 contained cooked tallow seed meal (CTSM) included at 75 % PKC: 25 % CTSM, 50 % PKC: 50% CTSM, 25% PKC:75 % CTSM and 0 % PKC: 100 % CTSM, while groups 5-8 had fermented tallow seed meal diets (FTSM) and included at the same levels as in the cooked diets. Fifty four rabbits were randomly selected for slaughtering from the nine groups with six rabbits (male and females) per group. Fatty acid content of the hind leg of rabbits were determined. All the fatty acids measured were significantly (P<0.05) influenced by the processing methods except decosenoic acid methyl ester and pentadecanoic acid methyl esters. The levels of inclusion of tallow also significantly (P<0.05) affected all the fatty acids composition measured. It was therefore concluded that irrespective of the processing methods the use of tallow in the diets of rabbits has no negative effect on the fatty acid composition of rabbit meat.
Smoke-dried fish is vulnerable to lipid peroxidation, which can reduce product quality and pose health risks to consumers. The study examined the antioxidant potency of Moringa oleifera marinade on oxidative stability of smoke-dried catfish in comparison with salt and Butylated hydroxyl anisole (BHA), a synthetic antioxidant. Seventy-two catfish (208±6 g) were processed, randomly assigned to six antioxidant treatment groups and hot smoked. The treatments are the control (0%), 1%, 2% and 3% (w/v) Moringa oleifera marinade (MOM), 5% Brine (w/v) and 0.2% BHA (w/v). The smoke-dried fish were stored at room temperature (35±1 0 C) for 8 weeks. Lipid peroxidation was monitored weekly using Thiobarbituric acid (TBA) assay. The results showed that Moringa oleifera marinade and BHA decreased lipid peroxidation more than (p<0.05) the control (0.94 mg/MDA/ kg) and salt (0.92 mg/MDA/kg) treated samples. This was shown by the lower Thiobarbituric acid reactive substance (TBARS) values of 1% MOM (0.84 mg/MDA/kg), 2% MOM (0.88 mg/MDA/kg), 3% MOM (0.85 mg/ MDA/kg) and BHA (0.80 mg/MDA/kg) treated samples. A general increase in oxidative spoilage was observed for all treatments as storage time progressed. However, the increment was more (p<0.05) intense in control and salt treated samples. No significant (p>0.05) difference was observed among all Moringa treated samples and BHA. Moringa oleifera marinade could be used as an alternative to BHA in suppressing lipid peroxidation in smoke-dried African catfish stored for 8 weeks.
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