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2024-01-26Subject
630 Agriculture GeflügelproduktionHühnerrasseLegehenneJunghenneHahnAnwesenheitHühnerkrankheitMetadata
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Aufsatz
Presence of keel bone damage in laying hens, pullets and roosters of local chicken breeds
Abstract
In commercial laying hens, keel bone damage (KBD) is a severe health and welfare problem leading to pain, reduced mobility and decreased laying performance. Flocks of all production systems and hybrid lines can be affected. KBD is a multifactorial welfare issue and, among other factors, associated with a high laying performance which negatively affects the calcium deposit in the medullary bones. Therefore, mature hens of local breeds with much lower egg production than commercial hybrids may be expected to show less or even no keel bone damage. This study evaluates (i) the prevalence of KBD in local breeds, (ii) the difference in type and level of damages, and (iii) if roosters and pullets are also affected. In total, we palpated 343 mature hens, 40 pullets, and 18 roosters of 13 different local breeds and one commercial hybrid. The animals were kept on eight different farms in free-range or floor-housing systems. Our results showed that on average 44.2% of mature hens per local breed were affected by KBD (range: 11.1%-84.7%). We found deviation of less than 1 cm in 26.9%, deviations of more than 1 cm in 6.4% and palpable fractures in 23.8% of the mature hens of local breeds. The tip was damaged in 23.6% of the mature hens. Also, pullets and roosters were affected by KBD. Finally, we found that KBD also occurs in local breeds. Therefore, we conclude that even the low laying performance of local breeds does not prevent them from the occurrence of KBD.KBD in local breeds may rather be associated with genetics (breed) as well as management and housing. Thus, breeders of local breeds should include bone health as a selection trait. Owners of local breeds should also pay attention to the condition of the keel and ought to be trained about preventive measures.
Citation
In: Plos One Volume 19 / Issue 1 (2024-01-26) eissn:1932-6203Sponsorship
Gefördert durch den Publikationsfonds der Universität KasselCitation
@article{doi:10.17170/kobra-202402019502,
author={Jung, Lisa and Hillemacher, Sonja and Tiemann, Inga and Lepke, Mascha and Hinrichs, Dirk},
title={Presence of keel bone damage in laying hens, pullets and roosters of local chicken breeds},
journal={Plos One},
year={2024}
}
0500 Oax 0501 Text $btxt$2rdacontent 0502 Computermedien $bc$2rdacarrier 1100 2024$n2024 1500 1/eng 2050 ##0##http://hdl.handle.net/123456789/15421 3000 Jung, Lisa 3010 Hillemacher, Sonja 3010 Tiemann, Inga 3010 Lepke, Mascha 3010 Hinrichs, Dirk 4000 Presence of keel bone damage in laying hens, pullets and roosters of local chicken breeds / Jung, Lisa 4030 4060 Online-Ressource 4085 ##0##=u http://nbn-resolving.de/http://hdl.handle.net/123456789/15421=x R 4204 \$dAufsatz 4170 5550 {{Geflügelproduktion}} 5550 {{Hühnerrasse}} 5550 {{Legehenne}} 5550 {{Junghenne}} 5550 {{Hahn}} 5550 {{Anwesenheit}} 5550 {{Hühnerkrankheit}} 7136 ##0##http://hdl.handle.net/123456789/15421
2024-02-01T12:51:59Z 2024-02-01T12:51:59Z 2024-01-26 doi:10.17170/kobra-202402019502 http://hdl.handle.net/123456789/15421 Gefördert durch den Publikationsfonds der Universität Kassel eng Namensnennung 4.0 International http://creativecommons.org/licenses/by/4.0/ 630 Presence of keel bone damage in laying hens, pullets and roosters of local chicken breeds Aufsatz In commercial laying hens, keel bone damage (KBD) is a severe health and welfare problem leading to pain, reduced mobility and decreased laying performance. Flocks of all production systems and hybrid lines can be affected. KBD is a multifactorial welfare issue and, among other factors, associated with a high laying performance which negatively affects the calcium deposit in the medullary bones. Therefore, mature hens of local breeds with much lower egg production than commercial hybrids may be expected to show less or even no keel bone damage. This study evaluates (i) the prevalence of KBD in local breeds, (ii) the difference in type and level of damages, and (iii) if roosters and pullets are also affected. In total, we palpated 343 mature hens, 40 pullets, and 18 roosters of 13 different local breeds and one commercial hybrid. The animals were kept on eight different farms in free-range or floor-housing systems. Our results showed that on average 44.2% of mature hens per local breed were affected by KBD (range: 11.1%-84.7%). We found deviation of less than 1 cm in 26.9%, deviations of more than 1 cm in 6.4% and palpable fractures in 23.8% of the mature hens of local breeds. The tip was damaged in 23.6% of the mature hens. Also, pullets and roosters were affected by KBD. Finally, we found that KBD also occurs in local breeds. Therefore, we conclude that even the low laying performance of local breeds does not prevent them from the occurrence of KBD.KBD in local breeds may rather be associated with genetics (breed) as well as management and housing. Thus, breeders of local breeds should include bone health as a selection trait. Owners of local breeds should also pay attention to the condition of the keel and ought to be trained about preventive measures. open access Jung, Lisa Hillemacher, Sonja Tiemann, Inga Lepke, Mascha Hinrichs, Dirk doi:10.1371/journal.pone.0297586 Geflügelproduktion Hühnerrasse Legehenne Junghenne Hahn Anwesenheit Hühnerkrankheit publishedVersion eissn:1932-6203 Issue 1 Plos One Volume 19 false e0297586
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