Effect of nutritional stress on wool yield, characteristics and efficiency of feed conversion to wool

[摘要] Inordertostudytheeffectofnutritionalstressonwoolyield,qualityandefficiencyoffeedconversiontowool,anexperimentwasconductedonChoklaandAvivastra(ExoticfinewooltypeRambouilletxIndigenousCarpetwooltypeChokla)animals.Threegroupsof9animalseachofboththebreedswereofferedadlibitum,50%and25%ofadlibitumintakeoffeed(50%concentratemix+50%groundcowpeahay),individuallyfor16weeksperiod.Choklaanimalsproduced54.9,36.9and36.5%morewoolwith114.2,84.2and72.6%greaterefficiencyinconvertingfeedtowoolinadlibitum,50and25%ofadlibitumintaketreatments,incomparisiontoAvivastraanimals.Efficiencyoffeedconversiontowoolincreasedwithdescendinglevelofintakeinboththebreeds.FleeceweightindicesatthreelevelsoffeedingremainedsimilarinAvivastraanimalsbutchangedsignificantlyinChoklaanimals.WoolfibreofAvivastraanimalswasfinerindiameter,shorterinlengthandpossessedmorecrimps/cmthanthefibresofChoklaanimals.Thestaplelengthandfibrediameterreducedwhilecrimps/cmoffibreincreasedduetotheeffectoflowernutritionlevel.

[学科分类] 农业科学（综合）