Results 51 to 60 of about 71,066 (270)

Avaliação de matrizes bovinas no Pantanal. [PDF]

open access: yes, 2013
No início do século XX inicou-sse a introdução de gado zebu, de origem indiana (Bos taurus indicus) no Pantanal. A partir de então, por meio de cruzamentos contínuos, as raças zebuínas absorveram praticamente toda a população do Tucura (Bos taurus taurus)
ABREU, U. G. P. de, SERENO, J. R. B.
core   +1 more source

Cytogenetic and molecular analysis of the Pantaneiro cattle breed Análise citogenética e molecular do bovino Pantaneiro

open access: yesPesquisa Agropecuária Brasileira, 2006
The objective of this work was to characterize Pantaneiro cattle genetically through its paternal ancestry by the morphology of the Y chromosome, whether submetacentric or acrocentric, as well as to identify the maternal ancestry through mitochondrial ...
Érica Cunha Issa   +2 more
doaj   +1 more source

Inside a duck‐billed dinosaur: Vertebral bone microstructure of Huallasaurus (Hadrosauridae), Upper Cretaceous of Patagonia

open access: yesThe Anatomical Record, EarlyView.
Abstract Dinosaurs evolved a unique respiratory system with air sacs that contributed to their evolutionary success. Postcranial skeletal pneumaticity (PSP) has been used to infer the presence of air sac systems in some fossil archosaurs. While unambiguous evidence of PSP is well documented in pterosaurs and post‐Carnian saurischians, it remains absent
Tito Aureliano   +3 more
wiley   +1 more source

Faunas mamalógicas do sítio pós-orientalizante do Cabeço Redondo (Sobral da Adiça, Moura) [PDF]

open access: yes, 2013
Resultados da análise dos restos faunísticos recuperados em 2011, na escavação arqueológica do sítio do Cabeço Redondo (Moura, Beja), cuja cronologia aponta para o século V a.C.
Cardoso, João Luís   +1 more
core  

Meta-Analysis of Mitochondrial DNA Reveals Several Population Bottlenecks during Worldwide Migrations of Cattle [PDF]

open access: yes, 2014
Several studies have investigated the differentiation of mitochondrial DNA in Eurasian, African and American cattle as well as archaeological bovine material.
Albano Beja-Pereira   +25 more
core   +3 more sources

From armadillos to sloths: Patterns and variations in xenarthran coronary anatomy

open access: yesThe Anatomical Record, EarlyView.
Abstract Species of the superorder Xenarthra play a vital ecological role in the Neotropics. Despite their evolutionary significance, anatomical studies on their coronary circulation remain scarce. This study investigated the coronary anatomy of 82 hearts from nine Xenarthra species across the Dasypodidae, Myrmecophagidae, and Bradypodidae.
Wilson Viotto‐Souza   +5 more
wiley   +1 more source

An attempt to correlate cattle breed origins and diseases associated with or transmitted by the tick Amblyomma variegatum in the French West Indies [PDF]

open access: yes, 1993
A l'aide de données biologiques et de la recherche historique, on a essayé d'expliquer la différence, en ce qui concerne la résistance et la sensibilité aux maladies transmises par (cowdriose) ou associées à (dermatophilose) la tique Amblyomma variegatum,
Accipe, A.   +7 more
core  

Bos taurus haplotypes segregating in Nellore (Bos indicus) cattle

open access: yesAnimal Genetics, 2021
SummaryBrazil is the largest exporter of beef in the world, and most of that beef derives from Nellore cattle. Although considered a zebu breed (Bos indicus), the history of Nellore cattle in Brazil is marked by the importation of bulls from India, the use of a Creole taurine (Bos taurus) maternal lineage to quickly expand the herds and backcrossing to
Y. T. Utsunomiya   +6 more
openaire   +4 more sources

Rethinking brachycephaly: Anatomical implications and health considerations in lagomorphs

open access: yesThe Anatomical Record, EarlyView.
Abstract Brachycephaly in domestic rabbits is increasingly perceived by welfare organizations as associated with significant health complications, particularly oral pathologies. Despite this perception, comparative anatomical research into rabbit brachycephaly is limited compared to that of dogs and cats, compelling an in‐depth examination of its ...
Helaina Cressy   +3 more
wiley   +1 more source

Perfil de ácidos graxos na carne de novilhos Charolês e Nelore puros e de gerações avançadas do cruzamento rotativo, terminados em confinamento Fatty acids profile of feedlot finished purebred Charolais and Nellore steers from advanced generations of rotational crossbreeding

open access: yesCiência Rural, 2009
Foram avaliados os efeitos da heterozigose e o grupo genético no perfil de ácidos graxos de novilhos puros (Charolês - C e Nelore - N) e mestiços da segunda (G2) (¾C¼N e ¾N¼C), da terceira (G3) (5/8C3/8N e 5/8N3/8C) e da ...
Luís Fernando Glasenapp de Menezes   +5 more
doaj   +1 more source

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