01311nam a2200301 a 450000100080000000500110000800800410001902400510006010000190011124500540013026001120018452004140029665000180071065000310072865000240075965000230078365000100080665000100081665000130082665000270083965300170086665300270088365300310091070000160094170000170095770000170097470000180099115289092025-02-06       2000    bl uuuu     u00u1 u    #d7 ahttps://doi.org/10.1017/S175275620000065X2DOI1 aHOWELLS, K. L.  aGenetic resiatnce to internal parasites in lambs.  aIn: BRITISH SOCIETY OF ANIMAL SCIENCE, 2000, Scarborough, UK. Proceedings... Medlothian, 2000. p. 64.c2000  aProgressive inefficacy of chemoprophylactic therapy to control gastro-intestinal (GI) nematode infection in sheep has been a major contributory factor in stimulating research into the development of alternative means of internal parasite control. This research aims to investigate the possibilities for selecting UK sheep for increased genetic resistance to naturally acquired GI nematode parasite infections.  aEndoparasites  aGastrointestinal nematodes  aGenetic improvement  aGenetic resistance  aSheep  aOvino  aParasito  aResistência Genética  aEndoparasito  aMelhoramento genético  aNematódeo gastrintestinal1 aWOLF, B. T.1 aHARESING, W.1 aLEWIS, R. M.1 aDAVIES, M. H.