Results 81 to 90 of about 3,425 (196)
Using step width to compare locomotor biomechanics between extinct, non-avian theropod dinosaurs and modern obligate bipeds [PDF]
, 2017 How extinct, non-avian theropod dinosaurs locomoted is a subject of considerable interest, as is the manner in which it evolved on the line leading to birds. Fossil footprints provide the most direct evidence for answering these questions. In this study,
Barrett, R S +10 more
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Animal Welfare, 1997 In April this year the Standing Committee of the European Convention for the Protection of Animals kept for Farming Purposes adopted a Recommendation (a 15 page document) on the management of farmed ratites (ostriches, emus and rheas). In accordance with Article 9 of the Convention, the Recommendation will enter into force on 22 October 1997.
openaire +1 more source
Revista Brasileira de Parasitologia VeterináriaOne of the most common problems in breeding of ostriches in captivity is the control of parasitic diseases. This work presents keys for the identification of adult nematodes and infective larvae by morphologic and morphometric characteristics. These keys
Nicole Brand Ederli +1 more
doaj +1 more source
Symmetry breaking in the embryonic skin triggers directional and sequential plumage patterning.
PLoS Biology, 2019 The development of an organism involves the formation of patterns from initially homogeneous surfaces in a reproducible manner. Simulations of various theoretical models recapitulate final states of natural patterns, yet drawing testable hypotheses from ...
Richard Bailleul +5 more
doaj +1 more source
Highly pathogenic avian influenza: a threat to U.S. poultry [PDF]
, 2001 8 pages.Description of avian influenza, with guidelines for preventing an outbreak of avian influenza in the United States.
United States. Department of Agriculture. Animal and Plant Health Inspection Service.
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Estimating egg mass-body mass relationships in birds [PDF]
, 2020 The mass of a bird’s egg is a critical attribute of the species’ life history and represents a fundamental component of reproductive effort. Indeed, the tradeoff between the number of eggs in a clutch and clutch mass lies at the heart of understanding ...
Balasubramaniam, Priya +1 more
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Influence of ruminal methane on digesta retention and digestive physiology in non-lactating dairy cattle [PDF]
, 2016 Enteric methane (CH4) production is a side-effect of herbivore digestion, but it is unknown whether CH4 itself influences digestive physiology. We investigated the effect of adding CH4 to, or reducing it in, the reticulorumen (RR) in a 4 × 4 Latin ...
Clauss, Marcus +11 more
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Comparative mortality levels among selected species of captive animals [PDF]
We present life tables by single year of age and sex for groups of animals and for 42 individual mostly mammalian species. Data are derived from the International Species Information System. The survivorship of most of these species has never been mapped
Iliana V. Kohler +2 more
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Diversity in olfactory bulb size in birds reflects allometry, ecology, and phylogeny [PDF]
, 2015 The relative size of olfactory bulbs (OBs) is correlated with olfactory capabilities across vertebrates and is widely used to assess the relative importance of olfaction to a species’ ecology.
Alma +165 more
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Miocene fossils show that kiwi (Apteryx, Apterygidae) are probably not phyletic dwarves [PDF]
, 2013 Copyright 2013 © Verlag Naturhistorisches Museum. Published version of the paper reproduced here with permission from the publisher. Publisher website: http://www.nhm-wien.ac.at/Until now, kiwi (Apteryx, Apterygidae) have had no pre-Quaternary fossil ...
Hand, Suzanne J +5 more
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