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ThesisItem Open Access EFFECT OF DIETARY INCLUSION OF VARYING LEVELS OF PEPPERMINT LEAF POWDER ON GROWTH PERFORMANCE OF JAPANESE QUAILS(SRI VENKATESWARA VETERINARY UNIVERSITY TIRUPATI - 517 502. (A.P.) INDIA, 2022-04) SWAPNIL ARJUN, SANGLE; Naga Raja Kumari, Kallam(MAJOR); Narendra Nath, D; Kavitha, PThe present study was carried out to study the effect of dietary incorporation of Peppermint Leaf Powder (PLP) on performance of quails. For this purpose, one day old Japanese quails (n=150) were distributed randomly to five dietary groups each with three replicates of 10 birds each and were maintained under uniform management conditions. Experiment diets were prepared with incorporation of Peppermint Leaf Powder at 0% (T1: control), 0.75% (T2), 1.5% (T3), 2.25% (T4) and 3.0% (T5) levels by marginal adjustment of other feed ingredients. All the rations were made iso-caloric and iso-nitrogenous. Feed and water were provided adlibitum. The birds were housed in battery cages during the experiment period of 0-5 weeks. Daily weighed quantity of feed was offered, end of every week feed residue and body weights were taken and body weight gain (BWG) and feed conversion ratio (FCR) calculated Chemical analysis indicated that PLP contained 17.90% CP, 14.37% CF, 2.31 % EE, 0.04 % calcium and 0.32% total phosphorus. Significantly (p<0.05) higher body weights were observed in birds fed with PLP at the end of experiment. The body weight gain was significantly increased (p<0.05) with increasing levels of PLP. Lower feed intake was observed in birds fed with PLP with increasing levels of PLP. Whereas, significantly better (p<0.05) FCR was reported at 3.0% level of PLP inclusion. Two birds per replicate and total of six bird per treatment were slaughtered at the end of 5th week. Serum total protein, Serum albumin, globulin, albumin globulin ratio, serum SGOT, serum SGPT, serum calcium, serum phosphorus and serum BUN were not affected by level of PLP. But, serum total cholesterol, serum triglycerides (p<0.05) and serum creatinine (p<0.01) was significantly decreased with increasing levels of PLP. Serum HDL-C values were increased significantly (p<0.05) and serum LDL-C and serum VLDL-C values decrease significantly (p<0.01) with increase in PLP level in diet. The carcass traits like live weight, carcass weight and dressing percentage were significantly (p<0.05) increased with increasing levels of PLP. On other hand, incorporation of PLP from 0 to 3.0% in diet had no significant effect on liver, heart, gizzard and giblet weights. The meat quality parameter i.e., pH, extract release volume (ERV) and water holding capacity (WHC) of meat of quails revealed that incorporation of PLP up to 3.0% level had no effect. In sensory evaluation of meat, Mean scores of sensory evaluations for all the parameters (colour, flavour, juiciness, tenderness and overall acceptability) of meat were increased significantly (p<0.05) at 3.0% PLP when compared with the other treatment groups. The digestibility coefficients of dry matter (DM), organic matter (OM), crude protein (CP), ether extract (EE), nitrogen free extract (NFE) and crude fiber (CF) were significantly (p<0.05) increased with increasing levels of PLP up to 3%. There was no significant difference in feed cost per kg gain in quails fed with PLP as compared with control group. The study indicated that the feed cost per kg gain was ₹ 121.57 (T1), 119.48 (T2), 120.58 (T3), 119.40 (T4) and 118.01 (T5). But numerically 3% level incorporation had Rs.3.56/- lower feed cost/kg body weight gain than control. It is concluded that PLP can safely be incorporated up to 3.0% level in the diet without any adverse effect on performance of quails.
