Abstract
A study was conducted at AFU livestock farm, Rampur, Chitwan in 2017-18 to determine the effect of dietary supplementation of garlic and ginger in different combination on feed intake, growth performance and economics by using commercial Cobb 500 broilers. A total of two hundred, 11-day-old chicks were allocated randomly to five different treatments. The experiment was designed in a Completely Randomized Design, each treatment with four replication and each replication had 10 birds. They were fed isoproteinous and isocaloric Basal diet (BD) and BD supplemented with four different levels of garlic and ginger such as T1 (BD only), T2 (BD + 1% garlic); T3 (BD + 1.0% ginger); T4 (BD + 0.5% garlic and 0.5% ginger) and T5 (BD + 1% garlic and 1% ginger). Weekly average body weight, weight gain, feed consumption, and feed efficiency were recorded up to sixth week of age. All data were statistical analyzed using Completely Randomized Design. The results showed that overall feed consumption was significantly (P≤0.05) higher for broiler fed diet supplemented with 0.5% garlic and 0.5% ginger (T4) followed by T5 (basal diet with 1% garlic and 1% ginger). On the other hand significantly higher (P≤0.01) cumulative weekly live body weight and body weight gain (g/bird) was found for the treatment with supplemented 1% garlic powder (T2), followed by broiler fed diet supplemented with 0.5% garlic and 0.5% ginger powder (T4). Similarly, feed conversion ratio was significantly (P≤0.01) better in broiler fed basal diet with supplementation of 1% garlic (T2) followed by basal diet with supplementation of 0.5% garlic and 0.5% ginger (T4). The maximum benefit was obtained from the broiler fed basal diet with supplementation of 1% garlic (T2). The findings revealed that broiler fed basal diet with supplementation of 1% garlic powder had helped as a growth promoter contributing to the better growth performance, feed efficiency and higher benefit: cost ratio. Thus, addition of 1% garlic powder can be safely recommended as a growth promoter in broilers.
Highlights
Report showed that dietary immunomodulator that enhance humoral immunity and immunological stress will affect growth performance most positively Garlic shows immune enhancing activities that include the promotion of lymphocyte formation (Kyo et al 2001; Humphrey, 2012)
The overall weekly feed consumption was recorded significantly (P
The overall mean weekly feed conversion ratio showed significantly (P
Summary
Poultry industry is the epitome of economy in Nepal in the recent decades. It has become one of the major national industries (Bhattarai, 2005). The use of additive in poultry feed to attain the properties like antibiotic, Access this article online. Implementation of such properties of the additives eventually minimize the effective cost of the feed. To replace synthetic additives without adversely affecting the performance of birds, natural growth promoters such as prebiotics, probiotics, synbiotics, enzymes, plant extracts, etc., can be used to feed the broilers (Borazjanizadeh et al.,2011). Due to the growth promoting effect, antibiotic effect, and immunological effect of the garlic and ginger, in the present scenario garlic and ginger are broadly used as feed additives in the poultry feed. Report showed that dietary immunomodulator (like garlic and ginger) that enhance humoral immunity and immunological stress will affect growth performance most positively Garlic shows immune enhancing activities that include the promotion of lymphocyte formation (Kyo et al 2001; Humphrey, 2012). The inhibitory properties of garlic on growth of microorganism including bacteria, yeast, viruses and fungi has been documented (Kivanc and Kunduhoglu, 1997)
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