Results 21 to 30 of about 16,222 (256)
On the Preservation of the Beak in Confuciusornis (Aves: Pygostylia)
Diversity, 2019 The Confuciusornithiformes represent the most stem-ward avian occurrence of an edentulous rostrum. Although a keratinous beak is widely considered to have covered the rostrum in confuciusornithiforms, this feature is almost never preserved, having been ...
Amanda Falk +3 more
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Poultry Science, 2023 : Beak shape varies considerably within and between intact-beak laying hens, and aspects of beak shape appear to be heritable. As an alternative to beak treatment (an effective method of reducing damage from severe feather pecking (SFP)), this variation ...
S. Struthers +8 more
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Animal, 2021 The avian beak is a multipurpose organ playing a vital role in a variety of functions, including feeding, drinking, playing, grasping objects, mating, nesting, preening and defence against predators and parasites.
A. Iqbal, A.F. Moss
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JVS - Vascular Science, 2023 Objectives: Formation of bird-beak configuration in thoracic endovascular aortic repair (TEVAR) has been shown to be correlated with the risk of complications such as type Ia endoleaks, stent graft migration, and collapse.
Negin Shahbazian, PhD +3 more
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Animals, 2021 Feather pecking and cannibalism are behavioral disorders that cause animal-welfare-relevant and economic problems. To mitigate these problems, the beaks of conventionally reared turkeys are usually already trimmed in the hatcheries.
Stefanie Grün +6 more
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Molecular Shaping of the Beak [PDF]
Science, 2004 Beak shape is a classic example of evolutionary diversification. Beak development in chicken and duck was used to examine morphological variations among avian species. There is only one proliferative zone in the frontonasal mass of chickens, but two in ducks. These growth zones are associated with bone morphogenetic protein 4 (BMP4) activity.
Ping, Wu +4 more
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Pesquisa Veterinária Brasileira, 2008 Esforço de tração foi aplicado perpendicularmente ao eixo do bico e para realização do ensaio foi utilizado um dinamômetro. O bico íntegro fraturou quando submetido a uma tração de 270,40 N, com deslocamento de 22,59mm.
Roberto Silveira Fecchio +5 more
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Identifying Initiation and Aging of Hens During the Laying Period by Raman Analysis of Beaks
The Journal of Poultry Science, 2019 Raman spectroscopy has been widely applied in the analysis of biological tissues. In this study, beak cuticle was studied to investigate its compositional and secondary structural changes during the laying period and aging of laying hens.
Shujie Wang +6 more
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Agriculture, 2021 The aim of the experiment was to investigate the use and effect of a new beak-abrasive material not yet examined on mortality of non-beak trimmed laying hens of different genotypes housed in an alternative pen.
Tamás Péter Farkas +5 more
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Ciência Rural, 2005 Twenty adult partridges Rhynchotus rufescens were used to study the morphology of the beak and the tongue. Lengths of the beak and of the tongue were evaluated, and histologic sections of the tongue were stained routinely with hematoxylin-eosin (HE ...
Juliana Regina Rossi +5 more
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