Amachawadi, R. G. and Scott, H. M. and Aperce, C. and Vinasco, J. and Drouillard, J. S. and Nagaraja, T. G. (United States of America)
Journal of Applied Microbiology (2015)
Eighty crossbred steers (body weight=568855 kg)were blocked by body weight and randomly allocated tofour treatments. he study design consisted of 292 factorialarrangement of supplemental copper, included as coppersulphate (10 or 100 mg kg1of feed dry matter) and tyl-osin sulphate (0 or 10 mg kg1of feed dry matter; Ty-lanâ; Elanco Animal Health, Greenfield, IN) in the diet.The four treatment groups were as follows: control (cop-per sulphate at 10 mg kg1of feed dry matter and notylosin), copper (copper at 100 mg kg1of feed dry mat-ter and no tylosin), tylosin (copper at 10 mg kg1of feeddry matter and tylosin at 10 mg kg1of feed dry matter),and copper and tylosin (copper at 100 mg kg1of feeddry matter and tylosin at 10 mg kg1of feed dry mat-ter).
Approximately, 20 g of pen floor faecal samples (n = 80) were collected with plastic spoons from freshly defecated faecal pats from each pen on day 0, 7, 14, 21 and 28 of feeding treatment diets.
AST Method: Disk Diffusion
Reference explicitly reports AST breakpoints: True
Reference reports using a MIC table: True
Is Excluded: False
| Country | Sub-Region | Sub-Region Detail |
|---|---|---|
| United States of America | Texas (State) | None |
| United States of America | Kansas (State) | Kansas State University |
| ID | Note | Resolution |
|---|
| Title | Host | Host | Production Stage | Description | ROs |
|---|---|---|---|---|---|
| Copper supplementation with Tylosin use | Cattle | Beef Steers | Feedlot | Control: copper sulphate at 10 mg kg^-1 of feed dry matter and no tylosin). Case: Copper at 100 mg kg^-1 of feed dry matter and tylosin at 10 mg kg^-1 of feed dry matter. Data are prevalence of tetracycline resistance gene tet(M). | 1 |
| Copper supplementation with Tylosin use | Cattle | Beef Steers | Feedlot | Control: copper sulphate at 10 mg kg^-1 of feed dry matter and no tylosin). Case: Copper at 100 mg kg^-1 of feed dry matter and tylosin at 10 mg kg^-1 of feed dry matter. Data are prevalence of copper sulfate resistance gene tcrB. | 1 |
| Copper supplementation | Cattle | Beef Steers | Feedlot | Prevalence of tcrB. Control: copper sulphate at 10 mg kg^-1 of feed dry matter and no tylosin. Case: Copper at 100 mg kg^-1 of feed dry matter and no tylosin | 1 |
| Copper supplementation | Cattle | Beef Steers | Feedlot | Control: copper sulphate at 10 mg kg^-1 of feed dry matter and no tylosin). Case: Copper at 100 mg kg^-1 of feed dry matter and no tylosin. Data are prevalence of tetracycline resistance gene tet(M). | 1 |
| Copper supplementation with Tylosin use | Cattle | Beef Steers | Feedlot | Control: copper sulphate at 10 mg kg^-1 of feed dry matter and no tylosin). Case: Copper at 100 mg kg^-1 of feed dry matter and tylosin at 10 mg kg^-1 of feed dry matter. Data are prevalence of tylosin resistance gene erm(B). | 1 |
| Copper supplementation | Cattle | Beef Steers | Feedlot | Control: copper sulphate at 10 mg kg^-1 of feed dry matter and no tylosin). Case: Copper at 100 mg kg^-1 of feed dry matter and no tylosin. Data are prevalence of tylosin resistance gene erm(B). | 1 |
| Tylosin Supplementation | Cattle | Beef Steers | Feedlot | Prevalence of tet(M). Control: copper sulphate at 10 mg kg^-1 of feed dry matter and no tylosin). Case: Copper at 10 mg kg^-1 of feed dry matter and tylosin at 10 mg kg^-1 of feed dry matter | 1 |
| Copper use | Cattle | Beef Calves | Farm | 10 mg/kg vs 100 mg/kg; prevalence of tcrB, no tylosin | 1 |
| Tylosin Supplementation | Cattle | Beef Steers | Feedlot | Prevalence of tcrB. Control: copper sulphate at 10 mg kg^-1 of feed dry matter and no tylosin). Case: Copper at 10 mg kg^-1 of feed dry matter and tylosin at 10 mg kg^-1 of feed dry matter | 1 |
| Tylosin Supplementation | Cattle | Beef Steers | Feedlot | Prevalence of ermB. Control: copper sulphate at 10 mg kg^-1 of feed dry matter and no tylosin). Case: Copper at 10 mg kg^-1 of feed dry matter and tylosin at 10 mg kg^-1 of feed dry matter | 1 |