Results 31 to 40 of about 10,355 (218)

Efecto de la inclusión del alimento balanceado sobre dieta basada en la productividad natural en el crecimiento y tiempo a metamorfosis de renacuajos de Rana Catesbeiana Shaw, 1802 (Amphibia: Ranidae)

open access: yesEcosistemas y Recursos Agropecuarios, 2014
Se evaluó el efecto de la inclusión de alimento balanceado en proporciones de 100 %, 75 %, 50 % y 25 % (en base a la tasa recomendada sobre su peso coporal) en el desarrollo de neacuajos de Rana catesbeiana Para obtener el articulo completo pueden ...
Mario Alfredo Benitez Mandujano
doaj   +1 more source

Emerging Pathogen in Wild Amphibians and Frogs (Rana catesbeiana) Farmed for International Trade

open access: yesEmerging Infectious Diseases, 2003
Chytridiomycosis is an emerging disease responsible for global decline and extinction of amphibians. We report the causative agent, Batrachochytrium dendrobatidis, in North American bullfrogs (Rana catesbeiana) farmed for the international restaurant ...
Rolando Mazzoni   +5 more
doaj   +1 more source

Abnormal Limb Development in Rana catesbeiana

open access: yesExperimental Biology and Medicine, 1965
SummaryPreliminary evidence has been presented which indicates that in the larval anuran, Rana catesbeiana, stimulation of the anterior limb bud field by cutting leads to the formation of supernumerary limbs. The abnormal appendages were conveniently categorized as duplicate or triplicate structures.
openaire   +2 more sources

Crescimento heterogêneo de girinos de rã-touro alimentados com diferentes rações Heterogeneous growth of bullfrog tadpoles fed with different diets

open access: yesPesquisa Agropecuária Brasileira, 2005
Este trabalho teve por objetivo avaliar o efeito de três rações experimentais com diferentes níveis protéicos (33,6%, 26,6% e 22,5%), comparadas a uma ração comercial (46,5%), no desempenho e crescimento heterogêneo de girinos de rã-touro (Rana ...
José Milton Barbosa   +2 more
doaj   +1 more source

New insights in gill/buccal rhythm spiking activity and CO2 sensitivity in pre- and post-metamorphic tadpoles (Pelophylax ridibundus)

open access: yes, 2013
Central CO2chemosensitivity is crucial for all air-breathing vertebrates and raises the question of itsrole in ventilatory rhythmogenesis. In this study, neurograms of ventilatory motor outputs recorded infacial nerve of premetamorphic and ...
Fiamma, Marie-Noëlle   +5 more
core   +3 more sources

Population Responses of Wood Frog (Rana Sylvatica) Tadpoles to Overwintered Bullfrog (Rana Catesbeiana) Tadpoles [PDF]

open access: yes, 2007
A fundamental goal in ecology is to understand how environmental variation influences the distribution of individuals within a population. In this study, we used laboratory experiments to examine the population responses of sympatric Wood Frog (Rana ...
Mullin, Stephen J., Walston, Leroy J.
core   +2 more sources

Rana aurora [PDF]

open access: yes, 1974
Number of Pages: 4Integrative BiologyGeological ...
Altig, Ronald, Dumas, Philip C.
core   +1 more source

Rações comerciais e o rendimento de carcaça e subprodutos de rã-touro Commercial food and the carcass yield and by-products of bullfrog

open access: yesCiência Rural, 2005
Objetivou-se avaliar o efeito do sexo e do uso de quatro rações comerciais extrusadas (R1, R2, R3 e R4) e uma ração peletizada (R5) sobre o rendimento de carcaça e aproveitamento de subprodutos da ranicultura, após 56 dias de experimentação.
Alex Poeta Casali   +2 more
doaj   +1 more source

Non-O1/O139 Vibrio cholerae causes severe intestinal disease in bullfrogs (Rana catesbeiana)

open access: yesAnimal Diseases, 2023
Bullfrogs (Rana catesbeiana) are amphibians with high economic value, but in recent years, bullfrog farming has encountered serious threats of bacterial diseases, and the “bullfrog economy” is facing a continuous decline.
Wenyu Liao   +9 more
doaj   +1 more source

Apparent Digestibility Coefficients of Seven Animal Protein Ingredients for Coho Salmon (<i>Oncorhynchus kisutch</i>) Post-Smolts. [PDF]

open access: yesAquac Nutr
The present study determined the apparent digestibility coefficients (ADCs) of dry matter, nutrients, and energy in selected seven animal protein ingredients, including Peruvian fish meal (PFM), native fish meal (NFM), Antarctic krill meal (AKM), native shrimp meal (NSM), poultry by‐product meal (PBPM), meat and bone meal (MBM), and hydrolyzed feather ...
Yu H   +7 more
europepmc   +2 more sources

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