Results 211 to 220 of about 1,714,269 (250)

Prevalence of keel bone deformities in Swiss laying hens

British Poultry Science, 2011
The goal of this study was to evaluate the prevalence of keel bone deformities of laying hens in Switzerland. The keel bones of 100 end-of-lay hens from each of 39 flocks (3900 in total) were palpated. On average, 25·4% of the hens had moderately or severely deformed keel bones and the overall prevalence including slight deformities was 55%.
S, Käppeli, S G, Gebhardt-Henrich, E, Fröhlich, A, Pfulg, M H, Stoffel   +4 more
openaire   +2 more sources

The effect of keel bone damage, housing system, hybrid, and phase of production cycle on the plumage condition of laying hens

Veterinarski arhiv (Tisak)
The aim of this study was to investigate the effect of keel bone damage, housing system, hybrid, and phase of production cycle on the plumage condition of laying hens.
A. Dedousi, Mirjana Đukić Stojčić, Evangelia N. Sossidou   +2 more
semanticscholar   +1 more source

Prevalence Of Health-Based Welfare Indicators, Feather And Keel Bone Damages In Commercial Broiler Breeder Hens

Harran Üniversitesi Veteriner Fakültesi Dergisi
This study was made to investigate the on-farm welfare of commercial broiler breeder hens using data collected during ante-mortem inspections of flocks at a commercial slaughterhouse in Bursa, Türkiye, during spring season between February to April.
Metin Petek, E. Çavuşoğlu
semanticscholar   +1 more source

Factors associated with keel bone damage – a longitudinal study of commercial layer flocks during the laying period

British Poultry Science
1. Keel bone damage, such as deformations and fractures, is a severe problem regarding animal welfare in layers. To identify risk factors under commercial conditions, 33 layer flocks (22 barn, 11 free range) with white (n = 18), brown (n = 11) and mixed (
J. Marggraff, E. Gernand, C. Ahlers, M. Huchler, S. Rautenschlein, K. Donat   +5 more
semanticscholar   +1 more source

Keel bone condition in laying hens: a histological evaluation of macroscopically assessed keel bones.

Berliner und Munchener tierarztliche Wochenschrift, 2008
The objective of the present study was to conduct a corresponding histological analysis of 162 macroscopically assessed keel bones (1: severe, 2: moderate, 3: slight, 4: no deformity). Four layer lines were used and hens were kept in furnished cages, small group systems (both allowing more activities due to the provision of perches) and an aviary ...
Britta, Scholz, Swaantje, Rönchen, Henning, Hamann, Marion, Hewicker-Trautwein, Ottmar, Distl   +4 more
openaire   +1 more source

The Mineral Profile of the Keel Bone of Laying Hens in Alternative and Cage Housing Systems

Acta Fytotechnica et Zootechnica
The aim of the study was to compare the keel bone profile of hens reared in cage and cage-free rearing systems. Experiments were carried out on a poultry farm on two alternative rearing systems and on one cage hall and measurements were carried out in ...
J. Petrovič, Martin Mellen
semanticscholar   +1 more source

Incidence, pathology and prevention of keel bone deformities in the laying hen

British Poultry Science, 2004
1. As a baseline study of the nature and incidence of keel deformities in laying hens, keel condition was examined in three different strains of hen from a total of 4 different caged environments (two commercial farms and two experimental farms). Incidence of keel deformity on farms in end of lay hens ranged from 2.6 to 16.7%.
R H, Fleming, H A, McCormack, L, McTeir, C C, Whitehead   +3 more
openaire   +2 more sources

Influence of housing system and design on bone strength and keel bone fractures in laying hens

Veterinary Record, 2011
The main objectives of the study were to provide an accurate assessment of current levels of old breaks in end‐of‐lay hens housed in a variety of system designs and identify the important risk factors. Sixty‐seven flocks housed in eight broad subcategories were assessed at the end of the production period.
L J, Wilkins, J L, McKinstry, N C, Avery, T G, Knowles, S N, Brown, J, Tarlton, C J, Nicol   +6 more
openaire   +2 more sources

Influence of Keel Shape of Salto TalarisTM Total Ankle Prosthesis on the Biomechanical Performance on the Bone-implant Interface: A Finite-element Analysis.

Journal of Foot and Ankle Surgery
PURPOSE This study aimed to evaluate the effects of changing the keel shape of the tibial component of a keel-type total ankle prosthesis on its biomechanical behavior and to identify possible directions for further prosthesis selection and improvement.
Yingdong Zhang, Li Heng, Xiangyu Xu, Wu Yong   +3 more
semanticscholar   +1 more source

Thermal Stability of Chicken Keel Bone Collagen

Journal of Food Biochemistry, 2013
J.N. Losso, M. Ogawa
openaire   +1 more source