Results 101 to 110 of about 249,031 (344)

Why we age

Biological Reviews, EarlyView.
ABSTRACT Three categories of explanations exist for why we age: mechanistic theories, which omit reference to evolutionary forces; weakening force of selection theories, which posit that barriers exist that prevent evolutionary forces from optimising fitness in ageing; and optimisation theories, which posit that evolutionary forces actually select for ...
Michael S. Ringel
wiley   +1 more source

Níveis de ractopamina para suínos machos castrados em terminação e mantidos sob conforto térmico Ractopamine levels to finishing barrows maintained o n thermoneutral environment

Ciência Rural, 2010
O objetivo do trabalho foi avaliar o desempenho e as características quantitativas de carcaça de suínos machos castrados, mantidos em ambiente de conforto térmico e alimentados com dietas contendo diferentes níveis de ractopamina.
Josilene Figueiredo Sanches, Charles Kiefer, Mariana Souza de Moura, Camilla Mendonça Silva, Mohammed Freitas da Luz, Alfredo Sampaio Carrijo   +5 more
doaj   +1 more source

Foraging behavior of fire ant Solenopsis saevissima (Smith) (Hymenoptera: Formicidae) in Felis catus Linnaeus (Carnivora: Felidae) carcass [PDF]

, 2016
Solenopsis saevissima fire ants were found foraging in a Felis catus carcass over tissues an secretions present in holes and mucosa.
Barbosa, Bruno Corrêa, Maciel, Tatiane Tagliatti, Prezoto, Fabio   +2 more
core  

Prevalence of Escherichia coli O157:H7 in beef cattle at slaughter and beef carcasses at retail shops in Ethiopia [PDF]

, 2017
Background: There is paucity of information regarding the epidemiology of Escherichia coli O157: H7 in developing countries. In this study, we investigated the occurrence of E.
Abdissa, Rosa, Agga, Getahun E, Beyene, Takele, Beyene, Tariku Jibat, Beyi, Ashenafi Feyisa, Cox, Eric, De Zutter, Lieven, Edao, Bedaso Mammo, Fite, Akafete Teklu, Goddeeris, Bruno, Haile, Woynshet, Korsa, Mesula Geloye, Tadesse, Fanos   +12 more
core   +3 more sources

Injuries in deep time: interpreting competitive behaviours in extinct reptiles via palaeopathology

Biological Reviews, EarlyView.
ABSTRACT For over a century, palaeopathology has been used as a tool for understanding evolution, disease in past communities and populations, and to interpret behaviour of extinct taxa. Physical traumas in particular have frequently been the justification for interpretations about aggressive and even competitive behaviours in extinct taxa.
Maximilian Scott, Julia A. Gamble, Caleb Marshall Brown, Kirstin S. Brink   +3 more
wiley   +1 more source

Consumer Appreciation of Carcass Quality of Organic vs Conventional Suckling Lamb Production [PDF]

, 2008
Carcass characteristics of sucking lambs (n= 40) of two breeds reared under conventional and organic conditions were analysed including objective and subjective parameters for fatness and conformation, meat and fat colour.
Lurueña-Martínez, M.A., Palacios, C., Revilla, I., Severiano-Pérez, P., Vivar-Quintana, A.M.   +4 more
core  

A review of the historic and present ecological role of aquatic and shoreline wood, from forest to deep sea

Biological Reviews, EarlyView.
ABSTRACT The ecology of forests, their losses, and terrestrial wood decomposition dynamics have been intensively studied and reviewed. In the aquatic realm, reviews have concentrated on large wood (LW) in rivers and the transition from freshwater to marine environments in the Pacific Northwest of North America. However, a comprehensive global synthesis
Jon Dickson, Ellen Wohl, Laura L. Govers, Oscar Franken, Tjeerd J. Bouma, Han Olff, Britas Klemens Eriksson, Maryann S. Watson, Luísa M.S. Borges, Tjisse van der Heide   +9 more
wiley   +1 more source

Substituição do milho por farelo de palma forrageira em dietas de ovinos em crescimento: desempenho Replacement of corn by forage cactus meal in growing lambs diets: performance

Revista Brasileira de Zootecnia, 2005
Objetivou-se, com este trabalho, avaliar quatro níveis de substituição do milho (0; 33; 67 e 100%) pelo farelo de palma forrageira sobre o desempenho de ovinos em crescimento terminados em confinamento.
Robson Magno Liberal Véras, Marcelo de Andrade Ferreira, Carmen Valéria de Araújo Cavalcanti, Antonia Sherlânea Chaves Véras, Francisco Fernando Ramos de Carvalho, Gladston Rafael Arruda dos Santos, Kaliandra Souza Alves, Rinaldo José de Souto Maior Júnior   +7 more
doaj   +1 more source

Beyond mammals: the evolution of chewing and other forms of oropharyngeal food processing in vertebrates

Biological Reviews, EarlyView.
ABSTRACT Oropharyngeal food processing exhibits a remarkable diversity among vertebrates, reflecting the evolution of specialised ‘processing centres’ associated with the mandibular, hyoid, and branchial arches. Although studies have detailed various food‐processing strategies and mechanisms across vertebrates, a coherent and comprehensive terminology ...
Daniel Schwarz, Maja Mielke, Stephan Handschuh, Anthony Herrel, Patrick Lemell, Léa Da Cunha, Nicolai Konow   +6 more
wiley   +1 more source

Effects of lysine levels of diets formulated based on total or digestible amino acids on broiler carcass composition

Brazilian Journal of Poultry Science, 2012
The study was conducted to evaluate carcass yield and chemical composition of thigh and breast muscles of broilers fed three different lysine requirement levels: high lysine (+10% NRC), standard (NRC) and low lysine (-10% NRC) and two ways of expressing ...
J Nasr, F Kheiri
doaj   +1 more source