Results 21 to 30 of about 1,990,934 (252)

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

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

COMPARISON OF SOME LINEAR BODY MEASUREMENT TRAITS OF LOCAL AND COMMERCIAL CHICKEN BREEDS OF SOUTH AFRICA

Siberian Journal of Life Sciences and Agriculture, 2021
Linear body measurement traits are used for the estimation of body weight in animal breeding to aid livestock farmers where the weighing scale is not available. The objective of the work was to determine the effect of breed on body weight (BW) and linear
Thobela Louis Tyasi, Khomotso Mashiloane, Kwena Mokoena   +2 more
doaj   +1 more source

Is Beak Morphology in Darwin's Finches Tuned to Loading Demands? [PDF]

PLoS ONE, 2015
One of nature's premier illustrations of adaptive evolution concerns the tight correspondence in birds between beak morphology and feeding behavior. In seed-crushing birds, beaks have been suggested to evolve at least in part to avoid fracture.
Joris Soons, Annelies Genbrugge, Jeffrey Podos, Dominique Adriaens, Peter Aerts, Joris Dirckx, Anthony Herrel   +6 more
doaj   +1 more source

Image_4_Identification of Key Candidate Genes for Beak Length Phenotype by Whole-Genome Resequencing in Geese.PNG

, 2022
The domestic goose is an important economic animal in agriculture and its beak, a trait with high heritability, plays an important role in promoting food intake and defending against attacks. In this study, we sequenced 772 420-day-old Xingguo gray geese
Hongbo Tang (4722957), Jianhua Huang (206865), Jing Ouyang (136686), Yanpeng Xiong (9984512), Hao Chen (5190), Yuren Gao (12241409), Luping Wang (7069874), Xueming Yan (136677), Cong Wang (107450), Sumei Zheng (6527579), Yongfei Wu (10186084)   +10 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

Feed and nutrient utilization efficiency and juvenile traits of Vezaguda chicken of Odisha in floor rearing system

Indian Journal of Animal Sciences, 2022
A study was conducted to evaluate the performance of Vezaguda, an indigenous chicken population of Odisha, up to 8 weeks of age in floor rearing system. Unsexed day-old chicks (100) were selected for this study.
A L PATRA, L SAMAL, N C BEHURA, N SAHOO, D P DAS, A CHAMPATI, S MUDULI, H K POPALGHAT   +7 more
doaj   +1 more source

Effect of beak length on feed intake in pigeons (Columba livia f. domestica)

Animal Welfare, 2007
AbstractThis study was undertaken to investigate the effect of beak length on feed intake with regard to animal welfare. The study involved two treatments groups; short beak pigeons (G-SB; n = 7) and normal beak pigeons (G-NB; n = 7) and was carried out in two consecutive trials.
KONYALI, COŞKUN, Savas, TÜRKER, YURTMAN, I. Y., DAS, G.   +3 more
openaire   +2 more sources

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

Image_1_Identification of Key Candidate Genes for Beak Length Phenotype by Whole-Genome Resequencing in Geese.TIF

, 2022
The domestic goose is an important economic animal in agriculture and its beak, a trait with high heritability, plays an important role in promoting food intake and defending against attacks. In this study, we sequenced 772 420-day-old Xingguo gray geese
Hongbo Tang (4722957), Jianhua Huang (206865), Jing Ouyang (136686), Yanpeng Xiong (9984512), Hao Chen (5190), Yuren Gao (12241409), Luping Wang (7069874), Xueming Yan (136677), Cong Wang (107450), Sumei Zheng (6527579), Yongfei Wu (10186084)   +10 more
core   +1 more source