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ThesisItem Open Access A STUDY ON THE GROWTH PERFORMANCE OF JAPANESE QUAIL FED VARIOUS LEVELS OF RAPESEED MEAL (RSM) (Brassica napus).(SRI VENKATESWARA VETERINARY UNIVERSITY, TIRUPATI - 517 502. (A.P.) INDIA, 2024-02) GIRISH HEMANTH KOLATI; Susmita .T (MAJOR0; Narendra Nath .D; Kavitha .PA biological trial was conducted to evaluate the effect of dietary incorporation of Rapeseed meal (RSM) in diets of Japanese quail on growth performance, serum biochemical profile, carcass traits, sensory parameters and cost economics of Japanese quail. Day old Japanese quails (n=150) were distributed randomly into five treatment samples each with three replicates containing ten birds each and were maintained under uniform management conditions. Experimental diets were prepared with incorporation of RSM at 0% (T1: control diet), 10% (T2), 15% (T3) 17.5% (T4) and 20% (T5) levels by marginal adjustment of other feed ingredients. All the rations were made iso-caloric and iso-nitrogenous. Feed and water were provided ad libitum. The birds were housed in battery cages during the experiment period of 0-5 weeks. Chemical analysis indicated that RSM contained 93.78% DM, 91.61% OM, 41.80% CP, 1.14% EE, 13.31% CF, 35.79% NFE, 8.39% total ash and 1.97% AIA. The results of current study revealed that mean body weights, mean body weight gains, mean feed intake and FCR had no significant effect. Two birds per replicate and total of six birds per treatment were slaughtered at the end of fifth week and the blood samples were collected. Serum triglycerides and serum VLDL-C levels were significantly (p<0.01) decreased with increasing levels of RSM. But, serum total protein, serum albumin, globulin, albumin: globulin ratio, serum total cholesterol, serum HDL-C, serum LDL-C, SGOT, SGPT, serum calcium, serum phosphorus, serum glucose, BUN and creatinine levels were not affected by different levels of RSM. The carcass traits such as mean dressing percentage, mean carcass weight, mean per cent weights of heart, liver, gizzard and giblet of quails revealed that incorporation of RSM up to 20% level had no effect. The meat quality parameters such as pH, extract release volume (ERV) and water holding capacity (WHC) of meat of quails revealed that incorporation of RSM up to 20% level had no effect. In sensory evaluation of meat, mean scores for all the parameters like colour, juiciness, tenderness and overall acceptability of meat revealed that incorporation of RSM up to 20% level had no effect. The percent retention of organic matter (OM), crude fiber (CF) and nitrogen free extract (NFE) were not significantly affected. Whereas the percent retention of dry matter (DM), crude protein (CP) and ether extract (EE) were significantly (p<0.05) decreased with increasing levels of RSM up to 20% but did not show any significant effect up to 15%. The feed cost / kg gain was significantly lower (p<0.01) in quails fed with 20% RSM as compared with other treatment groups. The study indicated that the feed cost /kg gain were ₹ 126.31, 129.78, 122.94, 118.87 and 113.50 for T1, T2, T3, T4 and T5, respectively. It was concluded that RSM can safely be incorporated up to 20% level in the diet without any adverse effect on performance of quails.
