Results 51 to 60 of about 70,483 (279)

Gene expression analysis of bovine embryonic disc, trophoblast and parietal hypoblast at the start of gastrulation [PDF]

open access: yes, 2017
In cattle early gastrulation-stage embryos (Stage 5), four tissues can be discerned: (i) the top layer of the embryonic disc consisting of embryonic ectoderm (EmE); (ii) the bottom layer of the disc consisting of mesoderm, endoderm and visceral hypoblast
Berg, D   +3 more
core   +2 more sources

On the Breeds of Cattle—Historic and Current Classifications [PDF]

open access: yes, 2011
Classification of cattle breeds contributes to our understanding of the history of cattle and is essential for an effective conservation of genetic diversity.
Adametz   +92 more
core   +2 more sources

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

Grotta Romanelli (Southern Italy, Apulia). Legacies and issues in excavating a key site for the Pleistocene of the Mediterranean [PDF]

open access: yes, 2018
Grotta Romanelli, located on the Adriatic coast of southern Apulia (Italy), is considered a key site for the Mediterranean Pleistocene for its archaeological and palaeontological contents. The site, discovered in 1874, was re-evaluated only in 1900, when
Brilli, M   +11 more
core   +2 more sources

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

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

Description de Rhipicephalus moucheti n. sp. (groupe de Rh. sanguineus ; acariens, Ixodoidea) [PDF]

open access: yes, 1964
Rh. moucheti diffère de toutes les espèces du groupe de Rh. sanguineus par les plaques adanales en faucilles du mâle; la femelle est inconnue; les exemplaires connus sont rares, originaires des savanes tropicales nord-soudaniennes (Cameroun) et ...
Morel, Pierre-Claude
core  

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

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

Descriptive, comparative, and functional anatomy of the facial musculature in cattle (Bos taurus)

open access: yesThe Anatomical Record, EarlyView.
Abstract Facial expressions can provide insight into animal emotions and pain, but no standardized system for assessing the entire facial display in cattle (Bos taurus Linnaeus) exists. The Facial Action Coding System (FACS), originally developed for humans, identifies distinct facial movements based on mimetic muscles.
Maja Söderlind   +6 more
wiley   +1 more source

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