| Autor: |
ENTROCASSO, C.M., PARKINS, J.J., ARMOUR, J., BAIRDEN, K., McWILLIAM, P.N. |
| Zdroj: |
Research in Veterinary Science; January 1986, Vol. 40 Issue: 1 p76-85, 10p |
| Abstrakt: |
Friesian steers were exposed to natural trichostrongyle infection and left untreated (controls) or treated with either a morantel sustained release bolus or fenbendazole at two week intervals (clean) in each of two consecutive grazing seasons. In the second grazing season the mean liveweight gains of the clean, morantel treated and control groups of cattle over 152 days were 105, 131 and 109 kg respectively (morantel treated > clean, control P<0·02). The cattle were slaughtered following an indoor fattening period. The dressed carcase weight, killing out percentage and related carcase measurements were superior in the treated groups. Eighty per cent of the clean and morantel treated cattle graded satisfactorily and qualified for subsidy payment whereas less than 30 per cent of the control cattle were successful. Rib joint analyses showed significantly lower total weight, eye muscle weight and area together with a higher bone content in control cattle. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
|
