Abstract
The objective of this study was to evaluate the effect of food treatments and water quality on the development of bullfrog tadpoles. The analysis, carried out in 1000 L tanks, was undertaken by weight and survival rates, during 56 days, as from stage 25 (Gosner, 1960). Treatments with ration (R) and algae + plankton + ration (APR) had the best results in weight and survival rates, which were significantly different (p s = 0.39; p < 0.05). From the 14th day of age, bullfrog tadpoles changed their feeding behavior, or rather, a search for food items other than plankton occurred. The utilization of combined natural and artificial (ration) diets to feed bullfrog tadpoles was feasible and yielded a satisfactory development in the animals.
Highlights
O interesse na criação de rã-touro Lithobates catesbeianus no Brasil vem crescendo de forma ascendente em virtude do sabor e textura da carne, tornando-se um grande potencial na aqüicultura
The objective of this study was to evaluate the effect of food treatments and water quality on the development of bullfrog tadpoles
A presença de Rotifera e pedaços de Cladocera e Copepoda, no trato digestório dos girinos, esteve associada à disponibilidade do alimento fornecido (Figura 1, Tabela 2)
Summary
Foram utilizados 6.000 girinos de rã-touro Lithobates catesbeianus, com peso médio inicial de 0,23 g, obtidos no Setor de Ranicultura do Centro de Aqüicultura da Universidade Estadual Paulista (Caunesp/Unesp, Jaboticabal, Estado de São Paulo), provenientes de uma mesma desova. Os girinos foram distribuídos em 12 tanques de alvenaria com capacidade de 1000 L, localizados numa estufa com temperatura que variou de 25,90 ± 2,05oC, numa densidade de estocagem de 1 girino para 2 L de água. Os tanques apresentaram fluxo contínuo de água com troca de 5% de renovação ao dia
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
