ANTHELMINTIC TREATMENT OF YOUNG BEEF CATTLE IN CENTRAL QUEENSLAND |
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| Authors: | R Winks BVSc |
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| Institution: | Long Pocket Laboratories, CSIRO, Private Bag No. 3, Indooroopilly, Queensland, 4068 |
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| Abstract: | The value of regular anthelmintic treatment of beef calves was assessed in two herds in central Queensland. In each herd groups of 31 suckling calves were observed. Control groups received no treatment, and treated groups received injectable trichlorphon either after rainfall exceeding 2 inches or monthly. Regular faecal egg counts revealed moderate infestations with Haemonchus placei, Oesopha-gostomum radiation, Cooperia spp, and Tricha-strongylus spp. In one herd, the groups received 0, 7, and 14 treatments over a period of 15 months, and showed mean weight gains of 356, 355, and 365 lb respectively. In the second herd after 0, 6, and 12 treatments, the corresponding gains were 407, 415, and 419 lb. It was concluded that, in these circumstances, the anthelmintic treatment had no economic value. |
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