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Rajasthan University of Veterinary and Animal Sciences, Bikaner (2018)

EFFECT OF SUPPLEMENTATION OF GELOI HERB (TINOSPORA CORDIFOLIA) AND ASCORBIC ACID ON PERFORMANCE AND CARCASS CHARACTERISTICS OF BROILERS IN ARID ZONE OF RAJASTHAN

DINESH JAIN

Titre : EFFECT OF SUPPLEMENTATION OF GELOI HERB (TINOSPORA CORDIFOLIA) AND ASCORBIC ACID ON PERFORMANCE AND CARCASS CHARACTERISTICS OF BROILERS IN ARID ZONE OF RAJASTHAN

Auteur : DINESH JAIN

Université de soutenance : Rajasthan University of Veterinary and Animal Sciences, Bikaner

Grade : Doctor of Philosophy (PhD) Animal Nutrition 2018

Résumé partiel
The aim of this study was to explore the utilization of geloi herb (Tinospora cordifolia) and ascorbic acid either alone or their various combinations as feed additive in broiler ration to improve the efficiency of utilization of nutrients. A feeding trial of six weeks followed by a metabolic trial was conducted, using 360 one day old broiler chicks (Cobb-400) randomly distributed in completely randomized design. The broiler chicks were equally and randomly divided into ten dietary treatments groups (T1-T10) and each dietary group was replicated to three sub-groups (R1-R3) for uniform distribution. The feeding of broilers chicks in both starter and finisher phase was done as per BIS standards (1992). The proximate composition of different experimental mixture was almost similar for all the treatment groups. The T1 i.e. control group was fed on basal diet, while T2, T3, T4 and T5 treatment groups were supplemented with 0.25%, 0.50%, 0.75%, and 1.0% of geloi in the basal broiler starter and finisher ration, respectively. The T6 group was supplemented with ascorbic acid @ 0.025% in the basal broiler starter and finisher ration. The T7, T8, T9 and T10 treatment groups were supplemented with 0.25%, 0.50%, 0.75%, and 1.0% of geloi in combination with ascorbic acid @ 0.025% in the basal broiler starter and finisher ration, respectively. Environment stress was observed during feeding trial as ambient temperature and THI were recorded on higher side than the threshold level in whole experimental period. The broiler chicks of starter phase were under more heat stress than broiler chicks of finisher phase. In vitro antibacterial activity of the various crude extracts of geloi was qualitatively assessed based on the zone of inhibition and had a marked antibacterial activity. In addition to this, the various extracts of geloi stem were subjected to GCMS full scan analysis for the presence of various phytochemicals. The results indicated the presence of various phytocompounds such as Vanillin lactoside, columbin, campesterol, stigmasterol, a-Amyrin and c-Sitosterol, which has antioxidant, antimicrobial, antiviral, anti-inflammatory, hepatoprotective, antidiabitic, analgesic, surfactants activity, lipid peroxidation inhibition activity, antiviral and flavouring properties. Significant effect of geloi or ascorbic acid alone and their various combinations was observed on overall feed intake, live body weight, body weight gain, average daily gain, feed conversion ratio, 262 performance index and protein efficiency ratio. Metabolizability of dry matter was found to be highly significant due to ascorbic acid supplementation. Significant effect of geloi supplementation was observed on crude protein metabolizability.

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