scholarly journals Fear, stress, and feather pecking in commercial white and brown laying hen parent-stock flocks and their relationships with production parameters

2013 ◽  
Vol 92 (9) ◽  
pp. 2259-2269 ◽  
Author(s):  
E.N. de Haas ◽  
B. Kemp ◽  
J.E. Bolhuis ◽  
T. Groothuis ◽  
T.B. Rodenburg
2018 ◽  
Vol 24 ◽  
pp. 9-18 ◽  
Author(s):  
Miriam Zepp ◽  
Helen Louton ◽  
Michael Erhard ◽  
Paul Schmidt ◽  
Franziska Helmer ◽  
...  

Animals ◽  
2019 ◽  
Vol 9 (2) ◽  
pp. 43 ◽  
Author(s):  
Eija Kaukonen ◽  
Anna Valros

Pecking-related problems are common in intensive egg production, compromising hen welfare, causing farmers economic losses and negatively affecting sustainability. These problems are often controlled by beak trimming, which in Finland is prohibited. An online questionnaire aimed to collect information from farmers about pecking-related problems in Finnish laying hen flocks, important risk factors and the best experiences to prevent the problems. Additionally, the farmers’ attitudes towards beak trimming were examined. We received 35 responses, which represents about 13% of all Finnish laying hen farms with ≥300 laying hens. The majority of respondents stated that a maximum of 5–7% incidence of feather pecking or 1–2% incidence of cannibalism would be tolerable. The majority of respondents (74%) expressed that they would definitely not use beak-trimmed hens. Only two respondents indicated that they would probably use beak-trimmed hens were the practice permitted. Among risk factors, light intensity earned the highest mean (6.3), on a scale from 1 (not important) to 7 (extremely important). Other important problems included those that occurred during rearing, feeding, flock management and problems with drinking water equipment (mean 5.9, each). The most important intervention measures included optimal lighting and feeding, flock management, and removing the pecker and victim. Concluding, Finnish farmers had strong negative attitudes towards beak trimming. The study underlines the importance of flock management, especially lighting and feeding, in preventing pecking problems and indicates that it is possible to incorporate a non-beak-trimming policy into sustainable egg production.


2000 ◽  
Vol 60 (2) ◽  
pp. 211-216 ◽  
Author(s):  
E. Zeltner ◽  
T. Klein ◽  
B. Huber-Eicher

Animals ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 46
Author(s):  
Arda Sözcü ◽  
Aydın İpek ◽  
Züleyha Oğuz ◽  
Stefan Gunnarsson ◽  
Anja B. Riber

Free-range systems are considered to improve bird health and welfare, thereby satisfying consumer demands. Behavioral time budget, fear level and clinical welfare indicators were compared for two Turkish laying hen genotypes, Atak-S (brown) and Atabey (white), reared in a free-range system. A total of 420 laying hens (210 Atak-S, 210 Atabey) were studied between 19 and 72 weeks of age. Higher percentages of eating and drinking behavior, feather pecking, and explorative pecking were observed for Atak-S hens, whereas Atabey hens were preening, walking–standing, and resting more. The duration of tonic immobility was longer, and the number of inductions was lower in Atabey compared with Atak-S hens. Atabey hens had less keel bone damages and better plumage conditions on the breast, wing, and tail at 56 and 72 weeks of age than Atak-S hens. Footpad dermatitis was more common in Atabey hens at 40 weeks, whereas Atak-S hens had a higher prevalence of footpad dermatitis with moderate lesions at 72 weeks of age. These findings indicate that free-range Atak-S hens may be more prone to keel bone damage and development of feather pecking, but they showed less foot lesions and were less fearful.


Author(s):  
M. Aman Yaman ◽  
Dasrul Dasrul ◽  
Zulfan Zulfan

This study aimed to evaluate the genetic potential of local meat chickens (LMC) to get the candidate of parent stock through the development of the selection method applied, as well as economical and practical approach and adjusment of nutritional requirement, especially protein and energy balance. Research was divided into 2 groups, where the female and male parent was reared for 2 months and the offspring (F1) was reared for 4 months and selected. The parent was mated by the method of artificial insemination (AI). Method of selection was used on the orientation of the meat chicken production parameters with a positive correlation with the gene expression Diet treatments were formulated by optimal nutrition standards in order to drive maximum primary production of local meat chicken, contained 17, 19, and 21% of protein. The result showed that feeding diet with 19% protein can stimulate optimum growth and food conversion of ALPU male, whereas female growth LMC in line with the increasing availability of protein in the diet, wherein feeding 21% of protein result in optimal growth until age 4 months.


Animals ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 262 ◽  
Author(s):  
Hanna Iffland ◽  
Robin Wellmann ◽  
Markus Schmid ◽  
Siegfried Preuß ◽  
Jens Tetens ◽  
...  

Feather pecking (FP) is a longstanding serious problem in commercial flocks of laying hens. It is a highly polygenic trait and the genetic background is still not completely understood. In order to find genomic regions influencing FP, selection signatures between laying hen lines divergently selected for high and low feather pecking were mapped using the intra-population iHS and the inter-population FST approach. In addition, the existence of an extreme subgroup of FP hens (EFP) across both selected lines has been demonstrated by fitting a mixture of negative binomial distributions to the data and calculating the posterior probability of belonging to the extreme subgroup (pEFP) for each hen. A genomewide association study (GWAS) was performed for the traits pEFP and FP delivered (FPD) with a subsequent post GWAS analysis. Mapping of selection signatures revealed no clear regions under selection. GWAS revealed a region on Chromosome 1, where the existence of a QTL influencing FP is likely. The candidate genes found in this region are a part of the GABAergic system, which has already been linked to FP in previous studies. Despite the polygenic nature of FP, selection on these candidate genes may reduce FP.


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