Browsing by Author "SURESH, M."
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ThesisItem Open Access EFFECT OF DIETARY POTASSIUM DIFORMATE ON GROWTH PERFORMANCE IN LARGE WHITE YORKSHIRE PIGS(COLLEGE OF VETERINARY AND ANIMAL SCIENCES-MANNUTHY,THRISSUR, 2003) SURESH, M.A study was carried out to assess the influence of potassium diformate on growth performance, digestibility of nutrients and carcass quality in Large White Yorkshire pigs. Thirty weaned male piglings with an average live weight of 13.0 kg were divided into three equal groups as uniform as possible with regard to age and body weight. Pigs were maintained on three experimental diets viz., Ti control standard grower (18 per cent crude protein and 3150 kcal/kg ME) and finisher ration (15.5 per cent crude protein and 3100 kcal/kg ME), T2 - control diet supplemented with 0.75 per cent potassium diformate and T3 - control diet supplemented with 1.5 per cent potassium diformate. The average daily gain of 465, 494 and 519 g were recorded for the groups Ti, T2 and T3, respectively. There was no significant difference (P>0.05) between the supplemented group and the group fed control diet. However, there was a trend for a higher growth rate of 6.2 per cent and 11.7 per cent, reported for T2 and T3 over those fed control diet. The average cumulative feed conversion efficiency were 3.97, 3.74 and 3.55 for the groups Ti, T2 and T3, respectively. Addition of potassium diformate at 0.75 and 1.5 per cent level in the diet of growing-finishing pigs had a higher (P<0.01) feed conversion efficiency over those fed control diet. There was no significant difference (P>0.05) between the supplemented groups. However, there was a trend for a higher feed efficiency for those fed 1.5 per cent potassium diformate supplemented diet. The digestibility coefficients for dry matter, ether extract, crude protein and nitrogen free extract were significantly higher (P<0.01) for pigs fed with diet supplemented with potassium diformate at both the levels (0.75 and 1.5 per cent). There was no significant difference between the supplemented groups. Dressing percentage, carcass length, back fat thickness, loin eye area and others were not significantly influenced (P>0.05) by the inclusion of potassium diformate at different levels. The costs of feed per kg live weight gain of pigs were Rs.32.82, 32.05 and 31.50, respectively for Ti, T2 and T3. The above results indicate that potassium diformate can be economically incorporated at 1.5 per cent level in the diet of Large White Yorkshire pigs.ThesisItem Open Access STUDIES ON COMBINING ABILITY AND IDENTIFICATION OF RESTORERS AND MAINTAINERS FOR DIVERSE CMS SOURCES IN SUNFLOWER (Helianthus annuus L.)(University of Agricultural Sciences GKVK, Bangalore, 2008-07-25) SURESH, M.; Shadakshari, Y. G.Twenty-seven inbreds were crossed with four diverse CMS sources viz., PET2 (CMS 132A), ARG6, PRH1 and MUT2 to identify the restorer and maintainer behaviour. RHA 272-II restored fertility in all the four diverse CMS sources. While six inbreds viz., M17R, MR1, RHA 298, RHA 348, RHA 589 and RHA 859 restored fertility in three diverse CMS sources viz., ARG6, PRH1 and MUT2. RHA 378 restored fertility in three diverse CMS sources viz., PET2, PRH1 and MUT2. Eleven inbreds have restored fertility in at least two different CMS sources. RHA 114 acted as a common maintainer for three diverse CMS sources viz., PET2, PRH1 and MUT2. Five inbreds maintained sterility in at least two different CMS sources. Out of 27 five inbreds could restore fertility on CMS 132A and 16 inbreds were found to be restorers for ARG6, while 15 inbreds behaved as restorers for PRH1 and MUT2 The PRH1 was best general combiner for head diameter, seed filling percentage, test weight, volume weight, seed yield, oil content and oil yield. While ARG6 was best general combiner for days to 50 per cent flowering, days to maturity, plant height and test weight. The tester, RHA 589 and RHA 859 were good combiners for seed and oil yield. While the tester RHA 272-II was good general combiner for earliness, plant height and test weight. Among the hybrids, MUT2 × RHA589 and PRH1 × MR1 was identified as the best specific combination for seed and oil yield; while, ARG6 × RHA298 was good specific combiner for oil content. The predominance of non additive gene action was observed for all the eleven characters studied. Hybrid ARG6 × MR1 registered highest heterosis for earliness over KBSH-1 and KBSH-44. MUT2 × RHA 589 and PRH1 × MR1 revealed high heterosis for seed and oil yield over popular hybrids KBSH-1 and KBSH-44.