Understanding Transcriptomic and Serological Differences between Forced Molting and Natural Molting in Laying Hens

Molting is natural adaptation to climate change in all birds, including chickens. Forced molting (FM) can rejuvenate and reactivate the reproductive potential of aged hens, but the effect of natural molting (NM) on older chickens is not clear. To explore why FM has a dramatically different effect on...

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Main Authors: Tongyu Zhang, Zhonghua Ning, Yu Chen, Junhui Wen, Yaxiong Jia, Liang Wang, Xueze Lv, Weifang Yang, Changqing Qu, Haiying Li, Huie Wang, Lujiang Qu
Format: Article
Language:English
Published: MDPI AG 2021-12-01
Series:Genes
Subjects:
Online Access:https://www.mdpi.com/2073-4425/13/1/89
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author Tongyu Zhang
Zhonghua Ning
Yu Chen
Junhui Wen
Yaxiong Jia
Liang Wang
Xueze Lv
Weifang Yang
Changqing Qu
Haiying Li
Huie Wang
Lujiang Qu
author_facet Tongyu Zhang
Zhonghua Ning
Yu Chen
Junhui Wen
Yaxiong Jia
Liang Wang
Xueze Lv
Weifang Yang
Changqing Qu
Haiying Li
Huie Wang
Lujiang Qu
author_sort Tongyu Zhang
collection DOAJ
description Molting is natural adaptation to climate change in all birds, including chickens. Forced molting (FM) can rejuvenate and reactivate the reproductive potential of aged hens, but the effect of natural molting (NM) on older chickens is not clear. To explore why FM has a dramatically different effect on chickens compared with NM, the transcriptome analyses of the hypothalamus and ovary in forced molted and natural molted hens at two periods with feathers fallen and regrown were performed. Additionally, each experimental chicken was tested for serological indices. The results of serological indices showed that growth hormone, thyroid stimulating hormone, and thyroxine levels were significantly higher (<i>p</i> < 0.05) in forced molted hens than in natural molted hens, and calcitonin concentrations were lower in the forced molted than in the natural molted hens. Furthermore, the transcriptomic analysis revealed a large number of genes related to disease resistance and anti-aging in the two different FM and NM periods. These regulatory genes and serological indices promote reproductive function during FM. This study systematically revealed the transcriptomic and serological differences between FM and NM, which could broaden our understanding of aging, rejuvenation, egg production, and welfare issues related to FM in chickens.
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spelling doaj.art-6227f1be912042c0be4482fcf9e061262023-11-23T13:52:08ZengMDPI AGGenes2073-44252021-12-011318910.3390/genes13010089Understanding Transcriptomic and Serological Differences between Forced Molting and Natural Molting in Laying HensTongyu Zhang0Zhonghua Ning1Yu Chen2Junhui Wen3Yaxiong Jia4Liang Wang5Xueze Lv6Weifang Yang7Changqing Qu8Haiying Li9Huie Wang10Lujiang Qu11State Key Laboratory of Animal Nutrition, Department of Animal Genetics and Breeding, National Engineering Laboratory for Animal Breeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, ChinaState Key Laboratory of Animal Nutrition, Department of Animal Genetics and Breeding, National Engineering Laboratory for Animal Breeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, ChinaBeijing Animal Husbandry and Veterinary Station, Beijing 100107, ChinaState Key Laboratory of Animal Nutrition, Department of Animal Genetics and Breeding, National Engineering Laboratory for Animal Breeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, ChinaInstitute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, ChinaBeijing Animal Husbandry and Veterinary Station, Beijing 100107, ChinaBeijing Animal Husbandry and Veterinary Station, Beijing 100107, ChinaBeijing Animal Husbandry and Veterinary Station, Beijing 100107, ChinaEngineering Technology Research Center of Anti-Aging Chinese Herbal Medicine of Anhui Province, Fuyang Normal University, Fuyang 236037, ChinaCollege of Animal Science, Xinjiang Agricultural University, Urumqi 830052, ChinaCollege of Animal Science, Tarim University, Alar 843300, ChinaState Key Laboratory of Animal Nutrition, Department of Animal Genetics and Breeding, National Engineering Laboratory for Animal Breeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, ChinaMolting is natural adaptation to climate change in all birds, including chickens. Forced molting (FM) can rejuvenate and reactivate the reproductive potential of aged hens, but the effect of natural molting (NM) on older chickens is not clear. To explore why FM has a dramatically different effect on chickens compared with NM, the transcriptome analyses of the hypothalamus and ovary in forced molted and natural molted hens at two periods with feathers fallen and regrown were performed. Additionally, each experimental chicken was tested for serological indices. The results of serological indices showed that growth hormone, thyroid stimulating hormone, and thyroxine levels were significantly higher (<i>p</i> < 0.05) in forced molted hens than in natural molted hens, and calcitonin concentrations were lower in the forced molted than in the natural molted hens. Furthermore, the transcriptomic analysis revealed a large number of genes related to disease resistance and anti-aging in the two different FM and NM periods. These regulatory genes and serological indices promote reproductive function during FM. This study systematically revealed the transcriptomic and serological differences between FM and NM, which could broaden our understanding of aging, rejuvenation, egg production, and welfare issues related to FM in chickens.https://www.mdpi.com/2073-4425/13/1/89forced moltingnatural moltingserological indicestranscriptomic analysischickens
spellingShingle Tongyu Zhang
Zhonghua Ning
Yu Chen
Junhui Wen
Yaxiong Jia
Liang Wang
Xueze Lv
Weifang Yang
Changqing Qu
Haiying Li
Huie Wang
Lujiang Qu
Understanding Transcriptomic and Serological Differences between Forced Molting and Natural Molting in Laying Hens
Genes
forced molting
natural molting
serological indices
transcriptomic analysis
chickens
title Understanding Transcriptomic and Serological Differences between Forced Molting and Natural Molting in Laying Hens
title_full Understanding Transcriptomic and Serological Differences between Forced Molting and Natural Molting in Laying Hens
title_fullStr Understanding Transcriptomic and Serological Differences between Forced Molting and Natural Molting in Laying Hens
title_full_unstemmed Understanding Transcriptomic and Serological Differences between Forced Molting and Natural Molting in Laying Hens
title_short Understanding Transcriptomic and Serological Differences between Forced Molting and Natural Molting in Laying Hens
title_sort understanding transcriptomic and serological differences between forced molting and natural molting in laying hens
topic forced molting
natural molting
serological indices
transcriptomic analysis
chickens
url https://www.mdpi.com/2073-4425/13/1/89
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