Browsing by Author "Jayasree, P."
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ArticleItem Open Access Genetic evaluation including maternal effects in Large White Yorkshire × desi crossbred pigs under hot and humid conditions of India(2019) Jayasree, P.; Sivaselvam, SN; Venkataramanan, R.; Meenakshisundaram, S.; Gowrimanokari, KV; Arthy, V.; Balasubramanyam, D.; TANUVASA study was conducted to evaluate the individual and sow performance traits of Large White Yorkshire × desi crossbred pigs at All India Co-ordinated Research Project on Pigs (AICRP), Kattupakkam. The genetic groups studied were 50% LWY (100% LWY × 100% desi), 50% LWY inter se (50% LWY 50% desi × 50% LWY 50% desi), 75% LWY (100% LWY × 50% LWY 50% desi) and 75% LWY inter se (75% LWY 25% desi × 75% LWY 25% desi). The (co)variance components for different traits were estimated by restricted maximum likelihood method (REML). The average inbreeding in the whole population was 5.4%. Maternal genetic and common litter effects were important random sources of variation in individual traits. The least-squares mean for birth weight (BW), weaning weight (WW), average daily gain up to weaning (ADG), market weight (MW), pre-weaning mortality (PWM), age at first farrowing (AFF), litter size at birth (LSAB), litter weight at birth (LWAB), litter size at weaning (LSAW), litter weight at weaning (LWAW) and farrowing interval (FI) were 1.079 kg, 7.906 kg, 142.238 g, 8.4%, 62.208 kg, 456.829 days, 197.994 days, 6.792, 8.174 kg, 6.347 and 60.649 kg, respectively, and the direct heritability obtained through the best model were 0.069, 0.015, 0.012, 0.031, 0.291, 0.019, 0.173, 0.257, 0.076 and 0.157, respectively. The repeatability estimates for LWAB, LSAW, LWAW and FI were 0.265, 0.258, 0.263 and 0.762, respectively. The 75% LWY were better in terms of production and reproduction traits and the high heritability for litter traits provided good scope for improvement.ThesisItem Open Access PERFORMANCE ANALYSIS OF LARGE WHITE YORKSHIRE x DESI CROSSBRED PIGS REARED UNDER FARM CONDITIONS(TANUVAS, Chennai, 2017) Jayasree, P.; Sivaselvam, S.N.; TANUVAS; Venkataramanan, R.; Meenakshisundaram, S.A study was conducted to evaluate the individual and sow performance traits of Large White Yorkshire (LWY) X Desi crossbred pigs at Post-Graduate Research Institute in Animal Sciences, Kattupakkam, Tamil Nadu. Data available on pedigree (from 1989 to 2016), sex, production, reproduction and disposal (from 2001 to 2016) at the All India Co-ordinated Research Project on Pigs (AICRP) were used for the study.ThesisItem Open Access STUDY OF FRUITS POTS OF POMEGRANATE (Punica granatum L.)(Professor Jayashankar Telangana State Agricultural University, 1996) Jayasree, P.; RAMANA RBDDY, A.V.A survey conducted to estimate the losses due to fruit spots of pomegranate in Tirupati market from November 1995 to March, 1996 and July 1996 to September 1996 revealed average loss of 10.91 and 18.51 per cent in wholesale and retail. market respectively during Iqovember 1995 to March 1996. In another survey during July 1996 to September 1996 average loss of 5.18 and 8.1! per cent was recorded in wholesale and retail market respectively. Maximum disease incidence was observed curing the months of higher relative humidity. Colletotrichum gloeospgrioides and Rhizoctonia sp isolated from spotted pomegranate isolation method and Were fruits and the culture .purified by single spore pathogenicity of the organisms was established. Among the five fungicides testaj i itro and 1_n vivo Bavistin (1000ppm) and Tilt (500ppn)'werefoundEffective in controlling Colletotrichum gloeosporioides and Bhizoctonia sp. causing fruit spots of pomegranate. Among the five plant extracts tested in vitro and in vivo Neem, Parthenium and Ocimum were found effective in controlling the Colletotrichum gloeospgrioides and Rhizoctonia sp. The effect of fungicides and plant extracts on shelf life of pomegranate fruits by dip treatment method revealed that Bavistin was significantly superior to other fungicides in extending the shelf life even 15 days after treatment and all the plant extracts were only partially effective in extending the shelf life of pomegranate fruits. Among different storage conditions tested to know the keeping quality of the fruits, it was observed that fruits stored in normal refrigeration (4—5“C) in perforated polythene bags remained disease free upto 40 days compared to the fruits stored in deep refrigeration (-2 to —A"C) and'in room temperature