A study was conducted to evaluate the changes in serum biochemical and lipid profile, and fatty acid composition of breast meat of broiler chickens fed supplemental grape seed extract (GSE). A total of 240 1-day-old male broiler chickens were randomly allocated to 4 groups, each consisting of 4 replicate pens having 15 birds/replicate pen. One group served as control group fed basal diets and other groups received 100, 200, and 400 ppm GSE supplemented to the basal diets. Liver weight was greater in broilers fed 200 ppm GSE compared to the other groups (P = 0.004, L = 0.024, C = 0.010). Serum AST and ALT levels decreased (P < 0.001) whereas ALP levels increased with increasing dietary GSE levels (P < 0.001). Serum albumin and total protein levels were lower in control in comparison with other groups (P < 0.001). Serum cholesterol, triglyceride, and LDL levels declined (P < 0.001) while HDL levels increased with increasing supplemental GSE levels (P < 0.001). MUFA levels were greater in breast meat of broiler chickens fed diets supplemented with 100 ppm GSE. On the other hand, PUFA (including n-3 and n-6) were greater in broiler chickens fed control diets or 400 ppm GSE supplemented diets. In general, essential fatty acids such as α-linolenic acid (n-3 C18:3), arachidonic acid (n-6 C20:4), eicosapentaenoic acid (n-3 C20:5), and docosahexaenoic acid (n-3 C22:6) were greater in breast meat of broiler chickens fed supplemental GSE (100, 200, or 400 ppm) while overall UFA concentration in breast meat remained unaffected. In conclusion, findings of this study suggest that dietary supplementation of up to 400 ppm GSE in broilers may improve serum biochemical and lipid profile. It may also improve the fatty acid composition of breast meat to varying extent despite no effect on overall UFA concentration.
In this study, the effects of (Mentha pulegium L.) dietary supplementation on performance, carcass characteristics, some biochemical parameters, and intestinal histology were investigated in broiler chickens. Four groups were formed as control and groups treated with pennyroyal at different levels (0.25%, 0.50%, and 1.00%). In the experiment. Each group had eight replicates. A total of 192 broilers were used in the study with six broilers in each replicate. Water and feed were ad libitum provided. Adding different levels of pennyroyals to broiler rations significantly affected performance parameters; an increase in final body weight and carcass yield and a decrease in total feed intake and the conversion rate was observed (P<0.05). Serum cholesterol, malondialdehyde, and glutathione values were also affected by the addition of pennyroyal (P<0.05). Pennyroyal was effective in vitro against S. enteritidis, E. coli, S. aureus, S. abortus ovis, B.anthracis sterne strains. Besides, it increased the duodenum villus’ length compared to the control group (P<0.05). On the other hand, pennyroyal did not affect carcass and visceral organ weights, several serum biochemical values (P>0.05). As a result, it was concluded that pennyroyal at the level of 0.50% in ration was effective on health and growth performance of broilers.
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