EVALUATION OF PRODUCTION PERFORMANCE OF ATHULYA (IWN X IWP), NATIVE AND IWN X NATIVE CROSSBRED LAYERS UNDER BACKYARD SYSTEM

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dc.contributor.advisorBinoj Chacko
dc.contributor.authorDEVAVRATHA S.
dc.date.accessioned2023-02-20T11:27:05Z
dc.date.available2023-02-20T11:27:05Z
dc.date.issued2021-11-30
dc.descriptionThesis Submitted in the partial fulfillment of the requirement for the degree of Master of Veterinary Science in Poultry Science.en_US
dc.description.abstractAn experiment was conducted to evaluate the production performance of Athulya, native and IWN x native crossbred layers under backyard system. The IWN and IWP strains used for producing Athulya in the present study belonged to S31 generation and the native bird evaluated belonged to S4 generation of the native chicken which were maintained at AICRP on Poultry for Eggs, Mannuthy. The IWN x native crossbreds were produced by crossing IWN strain of White Leghorn belonging to S 31 generation and native birds belonging to S 4 generation. One hundred, day old female chicks of each group were reared up to 14 weeks of age under deep litter system at AICRP on Poultry for Eggs, Mannuthy before distributing to households. Thirty households from Subash nagar and Kozhukully area of Thrissur district were selected for the study. At 14 weeks of age, 50 birds from each group were randomly selected and allotted to 10 households as a set of five to each. Thus total 150 birds were distributed among 30 households.The production performances of the birds were evaluated from 15 to 40 weeks of age. The body weight was found to be significantly higher (p<0.01) for Athulya than other two groups at all ages. The IWN x native crossbreds laid first egg earlier followed by Athulya and native birds. The overall egg production was similar among the three groups. The egg weight was significantly (p<0.01) higher for Athulya at 28 and 40 weeks of age and was higher for IWN x native birds than native birds at 28 weeks of age. The haugh unit and yolk colour score was significantly lower for IWN x native birds than Athulya and native birds. The shell thickness was statistically similar among the three groups. The egg shell colour was white in Athulya, tinted to brown in native and tinted in crossbreds. The haemoglobin values at 40 weeks of age were normal in all the three groups but the volume of packed red cell differed significantly between the groups. The heterophil to lymphocyte ratio was significantly (p<0.01) higher for IWN x native crossbreds. The monounsaturated fatty acid content was more in IWN x native eggs and the polyunsaturated fatty acid content was more in native eggs yolk at 36 weeks of age. At 28 weeks of age, the plumage colour observed was white in Athulya, black in native and white with black spots in crossbreds. There was no significant difference in overall livability per cent and the major cause of mortality was predation in Athulya and IWN x native birds. Eighty per cent households provided night shelter made of wood and ninety per cent provided nest box facility. The birds were fed with feed ingredients available in the households. The study revealed that the performance of native birds in respect to different traits makes them a suitable bird for backyard poultry rearing compared to Athulya and crossbredsen_US
dc.identifier.urihttps://krishikosh.egranth.ac.in/handle/1/5810194120
dc.keywordsEGG PRODUCTION, Haugh Unit, PLUMAGE COLOUR, BIRDS, HOUSING AND MANAGEMENT, LIVABILITY AND CAUSE OF MORTALITY, FATTY ACID PROFILE OF EGG YOLK,en_US
dc.language.isoEnglishen_US
dc.pages112pen_US
dc.publisherCOLLEGE OF VETERINARY AND ANIMAL SCIENCES MANNUTHY, THRISSURen_US
dc.research.problem1. Evaluate the production performance of Athulya, native and IWN x native crossbred birds under backyard system of rearing 2. Assess the techno economics of rearing the above group of birds under backyard systemen_US
dc.subPoultry Scienceen_US
dc.themeEVALUATION OF PRODUCTION PERFORMANCE OF ATHULYA (IWN X IWP), NATIVE AND IWN X NATIVE CROSSBRED LAYERS UNDER BACKYARD SYSTEMen_US
dc.these.typeM.V.Sc.en_US
dc.titleEVALUATION OF PRODUCTION PERFORMANCE OF ATHULYA (IWN X IWP), NATIVE AND IWN X NATIVE CROSSBRED LAYERS UNDER BACKYARD SYSTEMen_US
dc.typeThesisen_US
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