Cooperative breeding between males in the Greater Rhea Rhea americana
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Diet preference and breeding success in captive-bred Greater rheas (Rhea americana): a preliminary study
We conducted 2 consecutive experiments to verify whether adult captive Greater rheas (Rhea americana) could select diets differing in nutritional and energetic content, and to evaluate the effect of those diets on egg production and hatchability. From August to January, animals were offered four diets: processed feed for rheas (diet 1), diet 1 + soybean (diet 2), processed feed for chicken (die...
متن کاملOccurrence of antibodies to Toxoplasma gondii in rheas (Rhea americana) and ostriches (Struthio camelus) from farms of different Brazilian regions Ocorrência de anticorpos Toxoplasma gondii em emas (Rhea americana) e avestruzes (Struthio camelus) de propriedades de diferentes regiões brasileiras
This study aimed to verify the occurrence of antibodies against Toxoplasma gondii in rheas (Rhea americana) and ostriches (Struthio camelus) commercially breeding in Brazil. Blood samples from 20 rheas and 46 ostriches (young and adults) were serologically tested using a technique known as modified agglutination test (MAT) at an initial titration of 1:16 for ostriches and 1:25 for rheas. Antibo...
متن کاملAspects of spermatogenesis and microscopic testicular morphology in Greater Rhea, Rhea americana (Linnaeus, 1758)1
Freneau G.E., Carvalho S.F.M., Saboia-Morais S.M.T. & Freneau B.N. 2016. Aspects of spermatogenesis and microscopic testicular morphology in Greater Rhea, Rhea americana (Linnaeus, 1758). Pesquisa Veterinária Brasileira 36(10):1045-1052. Laboratório de Andrologia e Tecnologia do Sêmen, Escola de Veterinária e Zootecnia, Universidade Federal de Goiás, Campus Samambaia, Av. Esperança s/n, Campus ...
متن کاملSeasonal Changes in Plasma Levels of Sex Hormones in the Greater Rhea (Rhea americana), a South American Ratite with a Complex Mating System
Seasonal rhythm in sex hormones has been extensively studied in birds, as well as its relationship with the type of mating system. The Greater Rhea (Rhea americana), a South American ratite species, reproduces seasonally and has a complex mating system: female-defense polygyny and sequential polyandry. The present study aimed at analyzing the endocrine basis of reproduction in this species and ...
متن کاملParasitological and Molecular Detection of Cryptosporidium parvum in Rheas (Rhea americana)
Background: The rhea (Rhea americana) is a Brazilian wild bird that produce meat, leather and feathers of excellent quality. Rhea production has been increasing every day in Brazil due to many favorable conditions for breeding and there are also large native populations in various regions of the country. The incidence of parasites is a limiting factor when raising many animals, and rheas are no...
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