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Subject: Animal Nutrition × Author: Sharma, Sahil × Thesis Type: M.V.Sc. ×
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    ThesisItemOpen Access
    Use of phyto-additives in broiler diet with lower nutrient density
    (Palampur, 2021-12-27) Sharma, Sahil; Katoch, Shivani
    A study was conducted to evaluate phyto-additive viz. garlic powder (0.5%), cinnamon extract (0.1%) and a combination of garlic powder and cinnamon extract as an additive in poultry broiler diet with lower energy density under complete randomized design. For this purpose, vencobb-400 strain day old broiler chicks (n=195) were divided into 5 main treatment groups viz. T0, T1, T2, T3 and T4. Each treatment group was further divided into 3 replicates with 13 chicks in each. T0 served as positive control offered standard diet offered corn- soy flake-based ration (starter 21.95% CP and 2875 Kcal/kg ME; Finisher 19.82% CP and 2914 Kcal/kg ME), T1 served as negative control offered corn-soy based feed with low energy density (starter 21.95% CP and 2593 Kcal/kg ME; Finisher 19.82% CP and 2631 Kcal/kg ME), Treatment T2 was given standard corn- soy flake-based ration supplemented with 0.5% Garlic Powder (GP) but with low energy density (starter 21.95% CP and 2593 Kcal/kg ME; Finisher 19.82% CP and 2631 Kcal/kg ME), Treatment T3 was given standard corn- soy flakebased ration supplemented with 0.1% Cinnamon Extract (CE) but with low energy density (starter 21.95% CP and 2593 Kcal/kg ME; Finisher 19.82% CP and 2631 Kcal/kg ME) and Treatment T4 was given standard corn- soy flake based supplemented with combination of 0.5% GP and 0.1 CE but with low energy density (starter 21.95% CP and 2593 Kcal/kg ME; Finisher 19.82% CP and 2631 Kcal/kg ME). Perusal of results revealed that phyto-additive supplementation namely 0.5 % GP, 0.1% CE and combination of 0.5 % GP + 0.1% CE in low energy density feed positively influenced the growth, nutrient utilization with better feed to gain ratio, both during starter and finisher phase. Overall cinnamon extract supplementation at 0.1 per cent in low energy feed exhibited higher nitrogen retention exhibiting higher live weight gain and feed to gain ratio compared to combination of 0.5 % GP + 0.1% CE. Highest dressing percentage, thigh yield and low abdominal fat with leaner meat was recorded by CE (0.1%) addition and GP (0.5%) + CE (0.1%) combination supplemented to low energy density feed.  The organoleptic factors viz. flavor and overall acceptability of the meat was significantly (P<0.05) influenced by addition of cinnamon (0.1%) and combination of GP (0.5%) + CE (0.1%) supplementation. Economics of broiler production revealed lowest cost of producing 1 Kg meat by CE (0.1%) supplementation whereas it was highest in GP (0.5%) + CE (0.1%) supplementation. Therefore, it is concluded that compared to garlic powder (0.5%) and combination of garlic powder (0.5%) +cinnamon extract (0.1%), cinnamon extract (0.1%) supplementation alone in low energy density feed offered to broiler birds positively compensate the low energy by influencing the GIT (gastrointestinal tract) environment, lowering bacterial count, leading to better nitrogen retention and growth. Cinnamon extract supplementation at 0.1 per cent increases broiler dressing percentage, positively influences organoleptic values of the meat and reduce the cost of broiler meat production by 5.46% leading to good economic return to the farmers