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Subject: Animal Nutrition × Author: SAIKIA, ASHIM KUMAR × End date: 2019 × Start date: 2016 × Type: Thesis × Thesis Type: Ph.D ×
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    ThesisItemOpen Access
    EFFECT OF FEEDING DISTILLERS DRIED GRAIN WITH SOLUBLE (DDGS) WITH OR WITHOUT MULTI-ENZYMES ON THE GROWTH PERFORMANCE OF INDIGENOUS CHICKEN
    (College of Veterinary Science, Assam Agricultural University, Khanapara, Guwahati, 2019-07) SAIKIA, ASHIM KUMAR; Bhuyan, Robin
    The present study was undertaken to investigate the effect of dietary incorporation of distillers dried grains with solubles (DDGS) with or without multi-enzyme supplementation on the growth performance of indigenous chicken. A total of one hundred and eighty (180) day-old indigenous chicks were procured from a few villages of Dhemaji district. The chicks were reared together for a period of 21 days, up to the point when the sex of the chicks could be identified, by feeding standard chick feed. On 22nd day, after knowing the numbers of male and female chicks, they were weighed and randomly divided into six groups viz. T1, T2, T3, T4, T5 and T6 containing 30 chicks with 3 replicates of 10 chicks in each group. The chicks were wing banded and reared under deep litter system of management throughout the experimental period following standard and uniform managemental practices. The birds of T1 group (control) were offered the standard chick, grower & layer feeds as per BIS, 2007. The birds of T2 group were fed with the same standard chick, grower and layer feeds as per BIS, 2007 with supplementation of multienzyme (Xzyme). Maize DDGS was incorporated at 10% level in all the rations for T3 and T4 groups and the rations for T4 group was supplemented with multi-enzymes. In the same way, the birds of T5 and T6 groups were fed with rations containing 20% DDGS without and with enzymes, respectively. The maize DDGS used in the rations was procured from Brahmaputra Biochem Pvt. Ltd., Jambari, Guwahati. The feeding trial was conducted for a period of 182 days (13 fortnights) using chick feeds for first 3 fortnights (0-42 days), grower feeds for next 7 fortnights (43-140 days) and layer feeds for last 3 fortnights (141-182 days). A metabolic trial was conducted for a period of 8 days after the completion of feeding trial. During the experiment, average fortnightly and total feed consumption, fortnightly and total body weight and body weight gain, feed conversion ratio (FCR), various blood bio-chemicals constituents, balance of nutrients, survivability rate, carcass characteristics like dressing percentage, relative organ and giblets weight, organoleptic evaluation, egg quality parameters and economics of production were studied and recorded. The average final body weight of indigenous chicken was highest in T2 group (1643.93±25.22 g) followed by T1 (1607.86±16.29 g), T4 (1603.21±13.88 g), T6 (1596.07±11.78 g), T3 (1589.26±13.83 g) and T5 (1580.00±14.50 g) groups. The average total feed consumption per bird for different experimental groups was highest in T6 group (11748 g) and lowest in T1 group (11653 g). The overall FCR of the birds for entire period was least in T2 group (7.37) followed by T1 (7.51), T4 (7.51), T3 (7.62), T6 (7.64) and T5 (7.69) groups. The per cent survivability of birds was 93.33 in T1, T2, T4 and T6 groups and 90.00 in T3 and T5 groups. No significant difference (P>0.05) was observed in respect of final body weight, total and mean daily gain in body weight among the groups and total feed consumption as well as overall FCRs were found to be comparable among the treatment groups. Positive balances were observed in N, Ca and P utilization and significant difference (P0.05) were observed among the groups in respect of the blood constituents viz. Hb., blood glucose, total serum protein, blood lipids, blood cholesterol, AST and ALT levels and serum calcium and significant difference (P0.05) differences among the experimental groups. The average proximate principles (%) of breast meat of experimental birds of different groups for moisture, protein, fat and total ash contents were estimated and no significant difference (P>0.05) was found among the groups in respect of these proximate principles. Non-significant (P>0.05) difference was found in colour, tenderness, flavor, juiciness and overall acceptance of the breast meat among the treatment groups. Comparable values were also observed among the experimental groups in respect of both the external as well as internal egg quality parameters of the eggs laid by the birds of different groups. The costs of feeding and production were highest in group- T2 i.e. ₹284.48 & 405.67 and lowest in group- T5 i.e. ₹ 245.28 & 366.47, respectively.