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20171
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Subject: Poultry Science × Author: BEENA C JOSEPH × Start date: 2005 × Type: Thesis × Thesis Type: M.V.Sc. ×
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    ThesisItemOpen Access
    EFFECT OF REDUCING CRUDE PROTEIN LEVELS SUPPLEMENTED WITH LIMITING AMINO ACIDS ON THE PERFORMANCE OF SWARNADHARA FEMALE PARENT AND ITS PROGENY
    (KARNATAKA VETERINARY, ANIMAL AND FISHERIES SCIENCES UNIVERSITY, BIDAR - 585 401, 2017-10) BEENA C JOSEPH; Dr. JAYANAIK
    Three trials were carried out in Swarnadhara (SD) parent stock to evaluate the effect of reducing dietary crude protein levels supplemented with limiting amino acids on growth performance , production parameters and the progeny chick quality. First trial was conducted in SD chicks from 1-6 wks, to find out the effect of reducing crude protein with supplementation of limiting amino acids on growth parameters in a completely randomized design in 5 treatments with 4 replications of 20 birds in each. The control diet (T1) was based on corn soy bean meal formulated with 21% CP and 2800 kcal ME following the ICAR (2013) specifications which were recommended for improved native chicken breeds in India. The diets T2 to T5 were made iso caloric to control and composed with 20.5, 20, 19.5 and 19% CP, respectively meeting the levels of limiting amino acids as that of control by adding synthetic amino acids. No significant difference observed in body weight, FC, FCR, serum protein profile, immunological assay, dressing percentage, BMY percentage and survivability rate but inconsistent variations observed in giblet weights and abdominal fat percentage among groups. Second trial was conducted in SD layers from 29-40 wks, to find out the effect of reducing crude protein with supplementation of limiting amino acids on production parameters in a completely randomized design in 5 treatments with 6 replications of 8 birds in each .The control diet (T1) was based on corn soy bean meal formulated with 16% CP and 2700 kcal ME following the ICAR (2013). The diets T2 to T5 were made isocaloric to control and composed with 15.5, 15, 14.5 and 14% CP, respectively with supplementation of limiting amino acids. BW at 40th week tended to decline, but no significant difference observed in egg production, egg weight, egg quality, survivability, immunity and serum biochemical profile. Fertility rate tended to decline as the CP is reduced. Hatchability rate on TES and on FES were significantly low in 2.0 unit CP reduced group. In the third trial, progeny chicks from the experimental breeders of second trial were studied from 1-6 wks in a completely randomized design in 5 treatments with 4 replications of 20 birds in each feeding a standard diet (ICAR 2013) to all groups. Chick weight was not significantly affected but number of quality chicks non significantly tended to decline in the 2.0 unit CP reduced breeder diet group whereas, growth performance, carcass characteristics , immunity, survivability and serum biochemical profile were not affected by the CP reduction in the maternal diet with supplementation of limiting amino acids.