Abstract
Background: Recently, the use of antibiotic growth promoters has been banned in many countries due to cross-resistance among pathogens and residues in tissues, which led to search for the alternative feed additives in animal production. The aim of this study was to investigate the effects of “Kalo jeera” (Nigella sativa) powder and amino acids supplementation on the growth of broiler chicks and their blood parameters. Methods: A total of 100 day-old (Cobb® 500) chicks were randomly divided into four groups such as T0, T1, T2, T3, and each group contained 25 chicks. The group T0 was used as control and groups T1, T2 and T3 were treated group. Chicks of control group were fed with only basal diet and no supplements were supplied, and chicks of treatment group including T1, T2 and T3 were supplemented with amino acids, Nigella sativa powder and combination of Nigella sativa and amino acids, respectively. Body weight was recorded on 7th, 14th, 21th, 28th and 35th day of age. Haematological tests were performed at 15th, 25th and 35th day of age. Results: The results showed that net weight gain and feed conversion ratio were improved in the treated groups than that of the control group. Among the treated groups, the significant level of improvement was achieved in the T3 group followed by T1 and then T2. Total erythrocyte count, packed cell volume and haemoglobin concentration were significant (p<0.01) in the treated groups as compared to control. Conclusions: The results suggest that better growth performance could be achieved in broilers supplemented with Nigella sativa and amino acids in combination and those can be used as growth promoters.
Highlights
Poultry farming is one of the most successful and rapidly growing industries in Bangladesh which provides high quality protein in the form of meat and eggs and generates employments
Improved average daily weight gain and better feed conversion ratio (FCR) in broilers was achieved with fed 1% Nigella sativa seed in broiler diet (Guler et al, 2006; Durrani et al, 2007; AL-Beitawi et al, 2009) in different countries such as Turkey, Pakistan, Jordan
The present study was designed to investigate the effects of dietary supplementation of Nigella sativa as an alternative growth promoter on growth performance and blood parameters of broilers raised under coastal climate condition of Bangladesh
Summary
Poultry farming is one of the most successful and rapidly growing industries in Bangladesh which provides high quality protein in the form of meat and eggs and generates employments. Nigella sativa have been reported to have many biological properties including an antibacterial activity (Hanafy and Hatem, 1991; Mouhajir et al, 1999; Nair et al, 2005), antioxidant (Tawfeek et al, 2006), antiparasitic (Mahmoud et al, 2002), antidiarrheal (Gilani et al, 2004), antidiabetic (Meral et al, 2001), diuretic (Zaoui et al, 2000), and protective effect against liver damage (Mahmoud et al, 2002) It has been considered one of the greatest forms of healing medicine available, especially in Middle East and Asia, as it was mentioned that black seed is the remedy for all diseases except death in one of the prophetic hadith. The aim of this study was to investigate the effects of “Kalo jeera” (Nigella sativa) powder and amino acids supplementation on the growth of broiler chicks and their blood parameters
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