Results 1 to 10 of about 1,383 (59)
Evolution of bird sex chromosomes: a cytogenomic approach in Palaeognathae species [PDF]
Background Different patterns of sex chromosome differentiation are seen in Palaeognathae birds, a lineage that includes the ratites (Struthioniformes, Rheiformes, Apterygiformes, Casuariiformes, and the sister group Tinamiformes).
Príncia Grejo Setti +13 more
doaj +2 more sources
A histological survey of avian post-natal skeletal ontogeny [PDF]
Bone histology of crown-group birds is a research topic of great interest, permitting insight into the evolution of remarkably high growth rates in this clade and variation across the altricial-precocial spectrum.
Jessie Atterholt, Holly N. Woodward
doaj +2 more sources
Objetivo. Identificar ectoparásitos en las plumas primarias de avestruces adultas alojadas en un criadero del Departamento del Cauca Colombia. Materiales y métodos.
Fernando Favian Castro-Castro +6 more
doaj +1 more source
Aspectos nutricionales y sociales del consumo de la carne de avestruz: el caso de España
El consumo de carne de avestruz se introdujo en Europa hace relativamente poco tiempo y aun hoy es considerada como una carne exótica. No obstante, se ha valorado repetidamente su inclusión entre las fuentes habituales de proteínas de origen animal en ...
Alicia Aguilar, Xavier Medina
doaj +1 more source
More than a rabbit's tale – Encephalitozoon spp. in wild mammals and birds
Within the microsporidian genus Encephalitozoon, three species, Encephalitozoon cuniculi, Encephalitozoon hellem and Encephalitozoon intestinalis have been described.
Barbara Hinney +3 more
doaj +1 more source
A retrospective study was carried out to define the spectrum of spontaneous diseases in ostriches and few other captive ratites, order Struthioniformes, in northwestern Germany. The investigation included 71 ratites necropsied between 1968 and 2014. They
Aimara Bello +5 more
doaj +1 more source
Today, blood tests are an indispensable tool in avian medicine. This study aimed to describe and compare hematological and morphometric data of erythrocytes, leukocytes and thrombocytes of rhea, Rhea americana.
S. S. M. Gallo +2 more
doaj +1 more source
Blood exams are an indispensable tool in bird medicine. This study aimed at describing values and aspects of rheas' hematology, Rhea americana, as well as analyzing the morphology and morphometry of all blood cells.
S. S. M. Gallo +3 more
doaj +1 more source
Birds kept in zoological institutions are highly exposed to gastrointestinal (GI) parasitism caused by coccidia and nematodes. The current research aimed to characterize the avian GI parasitic fauna in several zoological collections in Portugal and Spain.
João Lozano +12 more
doaj +1 more source
走禽(Cursores)包括有鸵形目(Struthioniformes)美洲鸵目(Rhei-formes)、鹤鸵目(Casuariiformes)、无翼目(Apterygiformes)和(共鸟)形目(Tinamiformes),又称为平胸总目(Ratitae)或古颌总目(Palaeogna-thae)。走禽是现代鸟类中最大的种类。胸骨扁平不具龙骨突,锁骨退化或消失,骨盆多为封闭型,即左右趾骨在中线形成连合;
许维枢
doaj

