Aim:To evaluate the effects of Aloe vera on dressing percentage and hemato-biochemical parameters of broiler chickens. Materials and Methods:A total of 90 chicks were used in this study. They were randomly allocated into 3 treatment groups. Fresh Aloe vera leaf juice (ALJ) was prepared and administered to the test group T3 at the rate of 20 g/L in drinking water daily. This study was carried out for 42 days. Dressing percentage and hemato-biochemical parameters were recorded at the end of experiment.Results: Group that was given Aloe vera (T3) showed numerically higher dressing percentage as compared to control group (T1) and drug control group (T2). It also showed significantly (P<0.05) higher value of Hb concentration, PCV percentage, total leukocyte count (TLC), blood plasma glucose concentration, and serum calcium level as compared to control and drug control groups. No significant (P>0.05) differences were observed in other parameters among all the treatment groups. Conclusion:Aloe vera has potential to be a growth promoter in broiler chicks and its growth promoting effects are comparable to that of antibiotic growth promoter (AGP).

Aim:The study was conducted to evaluate the attribution of antibacterial and antioxidant activity of methanolic extract of Cassia tora toward its growth promoting effect in broiler birds.Materials and Methods:A limit test was conducted for C. tora extract in Wistar albino rats. Phytochemical screening of methanolic extract of leaves of C. tora was carried out. In-vitro antibacterial activity was measured by disc diffusion method. 1-day-old Ven Cobb broiler birds (n=90) were randomly allocated into three groups consisting of three replicates with 10 birds in each group. The birds of group T1 (Control) received basal diet, whereas birds of group T2 (Standard) received an antibiotic (Lincomycin at 0.05% in feed). The birds of group T3 (Test) received Cassia tora extract (CSE) at 0.4 g/L in drinking water in addition to basal diet. The treatment was given to birds of all the groups for 6 weeks. Antioxidant activity of C. tora was determined in blood of broiler birds. Cumulative body weight gain, feed intake, feed conversion ratio (FCR), dressing percent, and organ weight factor were evaluated to determine growth performance in broiler birds.Results:Phytochemicals in C. tora were screened. Sensitivity to Escherichia coli and resistant to Staphylococcus aureus and Pseudomonas aeruginosa was observed in in-vitro antibacterial activity test. At the end of 6th week, antioxidant activity reflected significantly (p≤0.05) lower level of erythrocyte malondialdehyde and higher levels of reduced glutathione (GSH) and GSH peroxidase in broiler birds of group T2 and T3 as compared to broiler of group T1. Mean cumulative body weight gain of birds of T2 and T3 were significantly (p≤0.05) higher as compared to T1. Mean FCR of birds of group T3 decreased significantly than group T1.Conclusion:Supplementation of C. tora leaves extract at 0.4 g/L in drinking water improved growth performance in broiler birds due to its antimicrobial and antioxidant activity. Therefore, it could be used as an alternative to antibiotic growth promoter in poultry ration.

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