27206
document
A fenbendazole oral drench in addition to an ivermectin pour-on reduces parasite burden and improves feedlot and carcass performance of finishing heifers compared with endectocides alone . Two studies utilizing 1,862 yearling heifers were conducted to determine the effects of a fenbendazole oral drench in addition to an ivermectin pour-on ( SG+IVPO ) , compared with an ivermectin pour-on ( IVPO ) or a doramectin injectable ( DMX ) alone , on parasite burden , feedlot performance , and carcass merit of feedlot cattle . In the first study , heifers receiving the SG+IVPO had fewer ( P = 0.02 ) cattle retreated for disease and 73 % fewer ( P = 0.06 ) worm eggs per fecal sample 98 d after treatment than heifers treated with IVPO . Heifers treated with SG+IVPO consumed more DM , had greater ADG , were heavier at slaughter , and had heavier carcasses than IVPO-treated heifers ( P < 0.05 ) . Heifers treated with SG+IVPO also had more ( P = 0.07 ) carcasses grading USDA Prime or Choice than IVPO-treated heifers . In the second study , heifers treated with SG+IVPO had fewer ( P < 0.01 ) worm eggs per fecal sample 35 d after treatment and had fewer numbers of adult and larval Cooperia and Trichostrongylus spp . in the small intestine at slaughter ( P < 0.10 ) compared with heifers treated with DMX . Heifers treated with SG+IVPO consumed more DM , were heavier at slaughter , and had heavier carcasses than DMX-treated heifers ( P < 0.01 ) . The SG+IVPO-treated heifers also had greater ADG ( P < 0.10 ) . The broad-spectrum effectiveness of a combination of a fenbendazole oral drench and an ivermectin pour-on reduced parasite burden and increased feed intake , ADG , and carcass weight in feedlot heifers compared with treatment with an endectocide alone .
27207
Intervention_Pharmacological
fenbendazole
27208
Intervention_Pharmacological
ivermectin
27209
Intervention_Pharmacological
fenbendazole oral drench
27210
Intervention_Pharmacological
ivermectin pour-on ( SG+IVPO
27211
Intervention_Pharmacological
ivermectin pour-on ( IVPO )
27212
Intervention_Pharmacological
doramectin injectable ( DMX ) alone
27213
Intervention_Pharmacological
SG+IVPO-treated
27214
Outcome_Physical
reduces parasite burden
27215
Outcome_Physical
improves feedlot
27216
Outcome_Physical
carcass performance
27217
Outcome_Physical
parasite burden
27218
Outcome_Physical
feedlot performance
27219
Outcome_Other
carcass merit of feedlot cattle
27220
Outcome_Other
cattle retreated for disease
27221
Outcome_Other
fewer ( P = 0.06 ) worm eggs per fecal sample
27222
Outcome_Other
heavier at slaughter
27223
Outcome_Other
heavier carcasses
27224
Outcome_Physical
carcasses
27225
Outcome_Other
fewer ( P < 0.01 ) worm eggs per fecal sample
27226
Outcome_Other
numbers of adult and larval Cooperia and Trichostrongylus spp .
27227
Outcome_Physical
in the small intestine
27228
Outcome_Mental
greater ADG
27229
Outcome_Physical
parasite burden
27230
Outcome_Physical
increased
27231
Outcome_Other
feed intake
27232
Outcome_Physical
carcass weight
27233
Participant_Condition
parasite burden
27234
Participant_Sample-size
1,862