Effects of the Calls and Presence of Roosters on Egg Incubation Behavior of Nagoya Laying Hens
The incubation behavior of the Japanese Nagoya chicken breed is a commercial issue because it often causes a sudden and sharp drop in egg production. In this study, whether the incidence of incubation behavior in Nagoya laying hens was associated with calls and the presenc...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Japan Poultry Science Association
2023-12-01
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| Series: | The Journal of Poultry Science |
| Subjects: | |
| Online Access: | https://www.jstage.jst.go.jp/article/jpsa/60/2/60_2023030/_pdf/-char/en |
| _version_ | 1797382754001747968 |
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| author | Akihiro Nakamura Keizou Kobayashi Hiromitsu Miyakawa Norio Kansaku |
| author_facet | Akihiro Nakamura Keizou Kobayashi Hiromitsu Miyakawa Norio Kansaku |
| author_sort | Akihiro Nakamura |
| collection | DOAJ |
| description | The incubation behavior of the Japanese Nagoya chicken breed is a commercial issue because it often causes a sudden and sharp drop in egg production. In this study, whether the incidence of incubation behavior in Nagoya laying hens was associated with calls and the presence of roosters in the same laying house was investigated. Four experiments were conducted using commercial layer-type Nagoya hens where the hatching time of the experimental birds and the treatment order in the presence of males were changed . In Experiment 1, the proportion of incubation behavior in the presence of roosters kept in another pen located between pen-rearing hens (51.3%) was higher than that in their absence (15.9%) or with only rooster calls (23.8%). In Experiments 2, 3, and 4, the proportion of incubation behavior in the presence of roosters (47.3%, 33.3%, and 37.9%, respectively) was higher than that in their absence (33.3%, 17.4%, and 25.6%, respectively). In all experiments, approximately 70% of the incubating hens observed in the absence of roosters exhibited incubation behavior, even in the presence of roosters. Therefore, the presence of roosters may enhance egg incubation behavior in Nagoya laying hens. |
| first_indexed | 2024-03-08T21:10:03Z |
| format | Article |
| id | doaj.art-08c2f78dc2994f1381352f6c566c0ded |
| institution | Directory Open Access Journal |
| issn | 1346-7395 1349-0486 |
| language | English |
| last_indexed | 2024-03-08T21:10:03Z |
| publishDate | 2023-12-01 |
| publisher | Japan Poultry Science Association |
| record_format | Article |
| series | The Journal of Poultry Science |
| spelling | doaj.art-08c2f78dc2994f1381352f6c566c0ded2023-12-22T06:27:16ZengJapan Poultry Science AssociationThe Journal of Poultry Science1346-73951349-04862023-12-0160210.2141/jpsa.2023030jpsaEffects of the Calls and Presence of Roosters on Egg Incubation Behavior of Nagoya Laying HensAkihiro Nakamura0Keizou Kobayashi1Hiromitsu Miyakawa2Norio Kansaku3Animal Husbandry Research Division, Aichi Agricultural Research Center, Yazakosagamine, Nagakute, Aichi 480-1193, JapanAnimal Husbandry Research Division, Aichi Agricultural Research Center, Yazakosagamine, Nagakute, Aichi 480-1193, JapanAnimal Husbandry Research Division, Aichi Agricultural Research Center, Yazakosagamine, Nagakute, Aichi 480-1193, JapanLaboratory of Animal Genetics and Breeding, Azabu University, Fuchinobe, Chuo-Ku, Sagamihara, Kanagawa 252-5201, JapanThe incubation behavior of the Japanese Nagoya chicken breed is a commercial issue because it often causes a sudden and sharp drop in egg production. In this study, whether the incidence of incubation behavior in Nagoya laying hens was associated with calls and the presence of roosters in the same laying house was investigated. Four experiments were conducted using commercial layer-type Nagoya hens where the hatching time of the experimental birds and the treatment order in the presence of males were changed . In Experiment 1, the proportion of incubation behavior in the presence of roosters kept in another pen located between pen-rearing hens (51.3%) was higher than that in their absence (15.9%) or with only rooster calls (23.8%). In Experiments 2, 3, and 4, the proportion of incubation behavior in the presence of roosters (47.3%, 33.3%, and 37.9%, respectively) was higher than that in their absence (33.3%, 17.4%, and 25.6%, respectively). In all experiments, approximately 70% of the incubating hens observed in the absence of roosters exhibited incubation behavior, even in the presence of roosters. Therefore, the presence of roosters may enhance egg incubation behavior in Nagoya laying hens.https://www.jstage.jst.go.jp/article/jpsa/60/2/60_2023030/_pdf/-char/enincubation behaviorlaying hennagoyarooster |
| spellingShingle | Akihiro Nakamura Keizou Kobayashi Hiromitsu Miyakawa Norio Kansaku Effects of the Calls and Presence of Roosters on Egg Incubation Behavior of Nagoya Laying Hens The Journal of Poultry Science incubation behavior laying hen nagoya rooster |
| title | Effects of the Calls and Presence of Roosters on Egg Incubation Behavior of Nagoya Laying Hens |
| title_full | Effects of the Calls and Presence of Roosters on Egg Incubation Behavior of Nagoya Laying Hens |
| title_fullStr | Effects of the Calls and Presence of Roosters on Egg Incubation Behavior of Nagoya Laying Hens |
| title_full_unstemmed | Effects of the Calls and Presence of Roosters on Egg Incubation Behavior of Nagoya Laying Hens |
| title_short | Effects of the Calls and Presence of Roosters on Egg Incubation Behavior of Nagoya Laying Hens |
| title_sort | effects of the calls and presence of roosters on egg incubation behavior of nagoya laying hens |
| topic | incubation behavior laying hen nagoya rooster |
| url | https://www.jstage.jst.go.jp/article/jpsa/60/2/60_2023030/_pdf/-char/en |
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