Results 21 to 30 of about 6,823,654 (239)

An analysis of the maxillary beak shape variation between 2 pure layer lines and its relationship to the underlying premaxillary bone, feather cover, and mortality

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, B. Andersson, M. Schmutz, O. Matika, H.A. McCormack, P.W. Wilson, I.C. Dunn, V. Sandilands, J.J. Schoenebeck   +8 more
doaj   +1 more source

Applied Research Note: Comparison of different methods for beak measurements in laying hens

Journal of Applied Poultry Research, 2023
SUMMARY: The measurement of beak lengths in poultry can be used to study the effects of beak trimming and to evaluate different abrasive methods for beak treatment.
N. Volkmann, A. Riedel, N. Kemper, B. Spindler   +3 more
doaj   +1 more source

Suboptimal Embryonic Incubation Temperature Has Long-Term, Sex-Specific Consequences on Beak Coloration and the Behavioral Stress Response in Zebra Finches

Frontiers in Ecology and Evolution, 2022
Secondary sex characteristics, like beak color in some avian species, have indirect impacts on reproductive success, as they are considered to be honest indicators of condition, immunocompetence, and developmental history.
Madeline P. Choi, Alexander M. Rubin, Haruka Wada   +2 more
doaj   +1 more source

Prevention and non-surgical treatment of soft tissue polly beak deformity after rhinoplasty: a scoping review

Journal of Cranio-Maxillofacial Surgery, 2023
The aim of this study is to map the available evidence of surgical preventive measures and postoperative methods for addressing supratip fibrosis (polly beak deformity) following rhinoplasty, to describe the postoperative results and to identify the most effective techniques. A scoping review was performed, selecting articles from the following medical
Erica Coppey, Natalie Loomans, Maurice Y. Mommaerts   +2 more
openaire   +3 more sources

Determining the variation in premaxillary and dentary bone morphology that may underlie beak shape between two pure layer lines

Poultry Science, 2021
: Beak treatment is an effective method of reducing the damage inflicted by severe feather pecking (SFP) but there is significant pressure to eliminate these treatments and rely solely on alternative strategies. Substantial variation in beak shape exists
S. Struthers, B. Andersson, M. Schmutz, H.A. McCormack, P.W. Wilson, I.C. Dunn, V. Sandilands, J.J. Schoenebeck   +7 more
doaj   +1 more source

Effect of beak trimming at hatch and the inclusion of oat hulls in the diet on growth performance, feed preference, exploratory pecking behavior, and gastrointestinal tract traits of brown-egg pullets from hatch to 15 weeks of age

Poultry Science, 2022
: The influence of infrared beak trimming at hatch (IRBT) and the inclusion of oat hulls (OH) in the diet on growth performance, feed preference, exploratory pecking behavior, and gastrointestinal tract (GIT) development, was studied in brown-egg pullets
J. Ben-Mabrouk, G.G. Mateos, A.F. de Juan, L. Aguirre, L. Cámara   +4 more
doaj   +1 more source

Effect of Hydrogen Dioxide Treatment on the Osteogenic Potential of Duck-beak Bone-derived Natural Bioceramic Microparticles [PDF]

In Vivo, 2017
As an alternative material to the autogenous bone, duck-beak bone particle for bone substitute have been attracting great attention due to their biological properties. To deliver the most favorable outcome of medical treatment, it is essential to study the effect of various processing methods of the duck-beak bone.
Joong-Hyun, Kim, Min-Ho, Park, Seok Jin, Jang, Soo Jin, Son, Jae Yeon, Lee, Jun Sik, Son, Se Eun, Kim, Seong Soo, Kang, Seok Hwa, Choi   +8 more
openaire   +2 more sources

Avian magnetoreception: elaborate iron mineral containing dendrites in the upper beak seem to be a common feature of birds [PDF]

, 2010
The magnetic field sensors enabling birds to extract orientational information from the Earth’s magnetic field have remained enigmatic. Our previously published results from homing pigeons have made us suggest that the iron containing sensory dendrites ...
Mouritsen, H., Kühbacher, Markus, Kuehbacher, M., Markus Kuehbacher, Fleissner, Gerta, Fleissner, G., Wellenreuther, G., Thalau, Peter, Mouritsen Henrik, Heyers, D., Dominik Heyers, Fleissner Guenther, Wellenreuther, Gerd, Kirsten Schuchardt, Thalau Peter, Mouritsen, Henrik, Thalau, P., Fleissner Gerta, Wellenreuther Gerd, Henrik Mouritsen, Schuchardt Kirsten, Falkenberg Gerald, Gerd Wellenreuther, Schuchardt, Kirsten, Gerald Falkenberg, Guenther Fleissner, Heyers Dominik, Heyers, Dominik, Fleissner, Günther, Falkenberg, G., Schuchardt, K., Peter Thalau, Gerta Fleissner, Falkenberg, Gerald, Kuehbacher Markus   +34 more
core   +1 more source

Interaction of magnetite-based receptors in the beak with the visual system underlying "fixed direction" responses in birds [PDF]

, 2010
Background: European robins, Erithacus rubecula, show two types of directional responses to the magnetic field: (1) compass orientation that is based on radical pair processes and lateralized in favor of the right eye and (2) so-called 'fixed direction ...
Onur Güntürkün, Gehring, Dennis, Güntürkün Onur, Güntürkün, Onur, Denzau Susanne, Wolfgang Wiltschko, Susanne Denzau, Wiltschko, Roswitha, Denzau, Susanne, Wiltschko, Wolfgang (Prof. Dr.), Roswitha Wiltschko, Wiltschko Roswitha, Gehring Dennis, Wiltschko Wolfgang, Dennis Gehring   +14 more
core   +1 more source

Infrared beak trimming protocols as an alternative to hot blade in commercial laying hens [PDF]

Revista Brasileira de Zootecnia
This study aimed to compare hot blade with infrared beak trimming with different protocols on performance, beak length, digestive system organ biometry, intestinal histomorphometry, and egg quality in white laying hens. One hundred and twenty chicks were
Verônica Letícia da Silva, Lilian Francisco Arantes de Souza, Rafael Victor Nunes Lima, Diogo Tsuyoshi Ito, Gustavo do Valle Polycarpo   +4 more
doaj   +1 more source