Results 111 to 120 of about 71,066 (270)

Investigation of the effects of weight loss on Ovis aries muscle: a proteomic study on three breeds with different levels of adaptation to nutritional stress [PDF]

, 2011
Tese de mestrado. Biologia (Biologia Celular e Biotecnologia). Universidade de Lisboa, Faculdade de Ciências, 2011Nos trópicos, a produção animal em regime extensivo enfrenta grandes obstáculos, talvez o maior dos quais é a perda de peso sazonal, devida ...
Palhinhas, Rui MIguel Guerreiro, 1988-
core  

Contrasting properties of predation and scavenging networks governed by megaherbivores in an African savannah

Journal of Animal Ecology, EarlyView.
For the first time, predation and scavenging networks are directly compared within a single ecosystem. Using an 8‐year dataset of African mammals, including megaherbivores, this study reveals distinct structural rules and body mass constraints, providing a scalable framework for studying consumer–resource dynamics and ecosystem function.
Solange Alexandra Batista‐Nunes, Esther Sebastián‐González, Femke Broekhuis, Frank van Langevelde, Niels Mogensen, Marcos Moleón   +5 more
wiley   +1 more source

Nutritional and productive performance of purebred Nellore heifers and crossed with Brangus and Braford finished in a feedlot system

Anais da Academia Brasileira de Ciências
This study evaluated the nutritional and productive performance of Nellore purebred heifers and crossbred Brangus x Nellore (BGNE) and Braford x Nellore (BFNE) in a feedlot system.
FELIPE C. BENTO, KAMILA A.K. DE MORAES, CLÁUDIO VIEIRA DE ARAUJO, VINÍCIUS AUGUSTO MACHADO, NATAN L. CECCONELLO, LORRAYNE O. DA CUNHA, JARLIANE DO NASCIMENTO SOUSA, KARINE R. DOS SANTOS NAVES, JULIANA C. ORTELAM, LEANDRO F. MORENO, EDUARDO HENRIQUE B.K. DE MORAES   +10 more
doaj   +1 more source

Russian wheat aphid: a model for genomic plasticity and a challenge to breeders

Insect Science, EarlyView.
Invasive foundress finds suitable habitat and reproduces through pathogenesis. Wingless females produce life offspring quickly, which leads to high population densities. High population densities result in competition, which may induce epigenetic changes and wing development for dispersal.
Astrid Jankielsohn, Vicky L. Tolmay, Marlon‐Schylor Luke le Roux, Lintle Mohase, Mpho S. Mafa, Vittorio F. Nicolis, Eduard Venter, Nicolaas Francois Visser Burger, Anna‐Maria Botha   +8 more
wiley   +1 more source

Genetic diversity among bovine racial subpopulations of Costa Rica

Agronomía Costarricense, 2015
Genetic diversity among bovine racial subpopulations of Costa Rica. The objetive of this study was to quantify the genetic diversity among 16 bovine racial subpopulations of Costa Rica, based on 1412 samples of bovine DNA from around the country, which ...
Marco Martínez, Bernardo Vargas, Juan Miguel Cordero, Idania Chacón, Bernal León   +4 more
doaj  

Los restos óseos de fauna del yacimiento argárico del Puntarrón Chico, Beniaján (Murcia)

Trabajos de Prehistoria, 1992
[es] Presentamos los primeros resultados del estudio sobre la fauna del yacimiento de Puntarrón Chico, Beniaján (Murcia). Entre los restos, hemos identificado dos especies salvajes (Cervus elaphus y Oryctolagus cuniculus) y cinco domésticas (Bos taurus ...
Miguel Ángel Mateo Saura, Jose María Vázquez Autón   +1 more
doaj   +1 more source

No evidence for a recent genetic bottleneck in the endangered Sheko cattle breed (African Bos taurus) revealed by microsatellite analysis [PDF]

, 2009
Sheko is African taurine cattle, valued for its milk yield, adaptation to humid tsetse infested environment and trypanotolerance. We used 30 microsatellite markers in analyzing 30 DNA samples. We found high genetic diversity and no genetic bottlenecks in
Hailu Dadi, Hirofumi Hanada, Joram Mwacharo, Koh Nomura, Markos Tibbo, Takashi Amano, Yukimizu Takahashi   +6 more
core   +1 more source

Cardiovascular Plasticity and Adaptation of High‐Altitude Birds and Mammals

Integrative Zoology, EarlyView.
This schematic depicts the cardiovascular adaptations of mammals and birds to high‐altitude hypoxia. It highlights key phenotypic changes in oxygen transport and cardiac responses, driven by molecular mechanisms including transcriptional regulation and genetic modifications.
Huishang She, Yanhua Qu
wiley   +1 more source

DIVERSIDAD GENÉTICA ENTRE SUBPOBLACIONES RACIALES BOVINAS DE COSTA RICA

Agronomía Costarricense, 2015
El objetivo del estudio fue cuantificar la diversidad genética entre 16 subpoblaciones raciales bovinas de Costa Rica, con base en 1412 muestras de ADN bovino de todo el país, evaluadas mediante 18 marcadores microsatélites. El número promedio de alelos (
Marco Martínez, Bernardo Vargas, Juan Miguel Cordero, Idania Chacón, Bernal León   +4 more
doaj  

Sensory Biology of the Franciscana (Pontoporia blainvillei, Pontoporiidae, Cetartiodactyla): Ontogenetic Modifications of Vibrissae and Vibrissal Crypts

Integrative Zoology, EarlyView.
The transition of cetaceans from a terrestrial to an aquatic environment involved a crucial sensory adaptation to environments with limited visibility. Vibrissae, important mechanoreceptors, undergo an ontogenetic transformation in odontocetes. This research describes the histomorphology of vibrissae and crypts at different developmental stages ...
Cecilia Mariana Krmpotic, Cleopatra Mara Loza, Alejo Carlos Scarano, Pedro Fernando Andrés‐Laube, Francisco Acuña, Juan Pablo Loureiro, Carolina Natalia Zanuzzi, Nicolás Nahuel Castro, María Teresa Pombo, Lorenzo von Fersen, Claudio Gustavo Barbeito   +10 more
wiley   +1 more source