Abstract
A field trial involving 217 dairy cows from 13 herds located in four different areas of Quebec was conducted to determine the level of subclinical parasitism. The effect on milk production was evaluated on 116 cows following a single anthelmintic treatment with morantel tartrate administered at freshening. The results showed that this treatment increased milk production in nine herds, which was statistically significant at P ≤ 0.05 in one of the herds and decreased yields in four herds. Overall, this treatment increased milk production by an average of 255 kg per cow for the official 305 day production period. This increase was found to be not statistically significant (P>0.05).
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Selected References
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- Barger I. A. Milk production of grazing dairy cattle after a single anthelmintic treatment. Aust Vet J. 1979 Feb;55(2):68–70. doi: 10.1111/j.1751-0813.1979.tb15166.x. [DOI] [PubMed] [Google Scholar]
- Bliss D. H., Todd A. C. Milk losses in dairy cows after exposure to infective trichostrongylid larvae. Vet Med Small Anim Clin. 1977 Oct;72(10):1612–1617. [PubMed] [Google Scholar]
- Bliss D. H., Todd A. C. Milk production by Vermont dairy cattle after deworming. (Two dewormings during the first 90 days of lactation). Vet Med Small Anim Clin. 1976 Sep;71(9):1251–1254. [PubMed] [Google Scholar]
- Bliss D. H., Todd A. C. Milk production by Wisconsin dairy cattle after deworming with thiabendazole. Vet Med Small Anim Clin. 1974 May;69(5):638–640. [PubMed] [Google Scholar]
- Bliss D., Todd A. C. Milk production by Wisconsin dairy cattle after deworming with BAYMIX. Vet Med Small Anim Clin. 1973 Sep;68(9):1034–passim. [PubMed] [Google Scholar]
- Fréchette J. L., Gibbs H. C. Studies on the incidence of gastrointestinal helminths of cattle in Quebec. Can Vet J. 1971 Nov;12(11):207–210. [PMC free article] [PubMed] [Google Scholar]
- Grisi L., Todd A. C. Prevalence of gastrointestinal parasitisms among milking cows in Wisconsin, Pennsylvania, and North Carolina. Am J Vet Res. 1978 Jan;39(1):51–54. [PubMed] [Google Scholar]
- Gutierres V., Todd A. C., Crowley J. W., Jr Natural populations of helminths in Wisconsin dairy cows. Vet Med Small Anim Clin. 1979 Mar;74(3):369-72, 374. [PubMed] [Google Scholar]
- Malczewski A., Wescott R. B., Spratling B. M., Gorham J. R. Internal parasites of Washington cattle. Am J Vet Res. 1975 Nov;36(11):1671–1675. [PubMed] [Google Scholar]
- McBeath D. G., Dean S. P., Preston N. K. The effect of a preparturient fenbendazole treatment on lactation yield in dairy cows. Vet Rec. 1979 Dec 1;105(22):507–509. doi: 10.1136/vr.105.22.507. [DOI] [PubMed] [Google Scholar]
- Pouplard L. Anthelmintic treatment of dairy cows. Vet Rec. 1978 Nov 4;103(19):434–434. doi: 10.1136/vr.103.19.434-a. [DOI] [PubMed] [Google Scholar]
- Randall R. W., Gibbs H. C. Occurrence and seasonal behavior of gastrointestinal nematodes infecting Maine dairy cattle. Am J Vet Res. 1977 Oct;38(10):1665–1668. [PubMed] [Google Scholar]
- Schock R. C. Nematode parasitism in cattle. Mod Vet Pract. 1976 Apr;57(4):273–277. [PubMed] [Google Scholar]
- Todd A. C., Bliss D. H., Grisi L., Crowley J. W., Jr Milk production by dairy cattle in Pennsylvania and North Carolina after deworming (treatment at freshening and systematically over the first three months of lactation). Vet Med Small Anim Clin. 1978 May;73(5):614–619. [PubMed] [Google Scholar]
- Todd A. C., Crowley J., Jr, Grisi L., Myers G., 3rd, Gutierres V., Bliss D. H. Economics and treatment of parasitic diseases in dairy and beef cattle. Mod Vet Pract. 1978 Jul;59(7):507–510. [PubMed] [Google Scholar]
- Todd A. C., Myers G. H., Bliss D., Cox D. D. Milk production in Wisconsin dairy cattle after anthelmintic treatment. Vet Med Small Anim Clin. 1972 Nov;67(11):1233–1236. [PubMed] [Google Scholar]