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ThesisItem Open Access EFFECT OF DIETARY SUPPLEMENTATION AND IN OVO FEEDING OF ALPHA KETOGLUTARATE ON THE PERFORMANCE OF COMMERCIAL BROILERS(U.P. Pandit Deen Dayal Upadhyaya pashu Chikitsa Vigyan Vishwavidyalaya Evam Go Anusandhan Sansthan (DUVASU) Mathura Uttar Pradesh India-281001, 2023-12-13) Kherde Aditya Rajiv; Amitav BhattacharyyaThe present study was conducted to assess the effect of dietary supplementation vis-a vis in ovo feeding of alpha ketoglutarate (AKG) on the performance of commercial broilers. Three hundred and seventy five fertile eggs of CARI-VISHAL birds were set for incubation for first 18 days in the setter and last 3 days in the hatcher. On the 18th day, in ovo feeding was done at the broad end of the egg. The eggs were divided into three groups: un-injected control, sham control and in ovo injected with AKG (0.6 ml of 1.5% AKG solution). After hatching, 180-day-old chicks were reared for feeding trials. Chicks from these three groups were further divided into two subgroups, each with three replicates and ten chicks per replicate. One subgroup received a basal diet, while the other received a basal diet with 1% AKG supplementation diet. Birds were reared for 42 days (6 weeks) and kept on a Basal or Control diet [BIS, 2007; broiler starter diet till 3 weeks and thereafter broiler finisher diet till 6 weeks]. Body weight gain during 0-3 weeks and 0-6 weeks in dietary supplemented AKG group were significantly higher (P<0.001 and P<0.02) than basal diet group. Similarly, feed consumption in dietary supplementation of AKG group was significantly higher (P<0.04 and P<0.04) than basal diet group during 3-6 weeks and 0-6 weeks. Serum HA (P< 0.001, P< 0.001 and P<0.001) and IgM titre (P<0.001, P<0.001 and P<0.001) to 1% GRBC were significantly higher in in ovo feeding of AKG and/or dietary supplementation of AKG. Serum cortisol concentration was significantly lower (P<0.001 and P<0.001) in in ovo AKG or dietary supplementation of AKG. Plasma cholesterol was significantly lower (P< 0.03) in dietary supplementation of AKG than basal diet group. Further, total protein was significantly higher in dietary supplementation of AKG (P<0.01) as well as in ovo AKG with AKG supplemented group (P<0.01). Small intestine weight was significantly lower (P<0.01) in basal diet supplemented with AKG than basal diet. However, large intestine length was significantly higher (P<0.005) in in ovo AKG group than un-injected control. Na content of breast muscle of birds of in ovo AKG group was significantly higher (P<0.001) than birds of un-injected control and sham control. Further, Fe and Mn content of thigh muscle of birds of in ovo AKG group was significantly higher (P<0.02 and P<0.01) than birds of un-injected control group. In breast meat cuts, in ovo feeding or dietary supplementation of AKG was significantly lower in SFA. Birds of in ovo AKG group had significantly higher (P<0.02) MUFA than birds of un-injected control group. Further, dietary supplementation of AKG resulted in significantly higher (P<0.03) omega 6 fatty acids in breast meat cuts as compared to birds in the control diet. PUFA (P<0.001) and omega 6 fatty acids (P<0.001) were significantly higher in birds after dietary supplementation of AKG or in ovo feeding of AKG. It was concluded that dietary AKG supplementation led to increased body weight gain and feed consumption during different phases of growth. In ovo feeding or dietary supplementation of AKG resulted in significantly higher serum HA, IgM, and lower cortisol levels. In addition, percent PUFA and omega 6 fatty acids were significantly higher and saturated fatty acids were significantly lower in breast meat cuts of birds after in ovo feeding and/ or dietary supplementation of AKG.
