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A study on spawning of bull frogs (Rana catesbeiana) using induced mating



A study on spawning of bull frogs (Rana catesbeiana) using induced mating



Revista Brasileira de Zootecnia 27(2): 216-223



60 male and female bull frogs were injected with a total dose of 1, 3, 5 or 7 mg crude pituitary extract (CHE)/kg body weight, administered at intervals of 6, 12 or 18 h. The incidence of spontaneous spawning was 25-100% in treated frogs vs. 0% for untreated controls, the best results being obtained after treatment with 5.5 or 7.7 mg CHE at intervals of 6 or 18 h.

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