Milk production by dairy cattle in Pennsylvania and North Carolina after deworming (treatment at freshening and systematically over the first three months of lactation).
D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000188:drug therapy*; D005260:Female; D006373:Helminthiasis / Q000188:drug therapy; D006374:Helminthiasis, Animal; D007774:Lactation; D009657:North Carolina; D010414:Pennsylvania; D011247:Pregnancy; D013997:Time Factors