| reduction of mastitis caused by experimental challenge with staphylococcus aureus and streptococcus agalactiae by use of a quaternary ammonium and halogen-mixture teat dip. | a teat-dip formulation containing sodium dichloro isocyanuric acid, bronopol, and quaternary ammonium was tested for efficacy against staphylococcus aureus and streptococcus agalactiae intramammary infections (imi) using an experimental challenge model. sixty-two jersey cows from the hill farm research station (homer, la) were used in an 8-wk controlled infection trial to evaluate the teat dip. during the afternoon milking, monday through friday for 8 wk, all teats of each cow were immersed to a ... | 2002 | 11860119 |
| role of horn flies (haematobia irritans) in staphylococcus aureus-induced mastitis in dairy heifers. | to determine whether staphylococcus aureus can colonize in horn flies and whether colonization is sufficiently persistent for transmission of the organism to cows by flies. | 1998 | 9736388 |
| prevalence of intramammary infection and teat canal colonization in unbred and primigravid dairy heifers. | teat canal keratin (n = 461) and mammary gland secretions (n = 370) were collected from 31 unbred and 85 primigravid jersey heifers from one research and three commercial dairy herds. of 97 heifers from which secretion samples were obtained, 96.9% had intramammary infections and 29% showed clinical symptoms. seventy-five percent of quarters were infected. staphylococcus aureus were isolated from 36 (37.1%) heifers and 55 (14.9%) quarters. one hundred and eight (93.1%) heifers and 326 (70.7%) qua ... | 1990 | 1690231 |