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Behavior and physiology of two different sow breeds in a farrowing environment during late 35-day lactation

To improve the overall welfare levels of sows and to reduce stress levels at late 35-day lactation, we selected targeted behavioral indicators that might be associated with stress. Therefore, we monitored and evaluated the adaptive capability of two different breeds of sows to the farrowing environm...

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Autores principales: Liu, Honggui, Yi, Ran, Wang, Chao, Zhao, Peng, Zhang, Mingyue, Xu, Shiwen, Bao, Jun
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5951537/
https://www.ncbi.nlm.nih.gov/pubmed/29758053
http://dx.doi.org/10.1371/journal.pone.0197152
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author Liu, Honggui
Yi, Ran
Wang, Chao
Zhao, Peng
Zhang, Mingyue
Xu, Shiwen
Bao, Jun
author_facet Liu, Honggui
Yi, Ran
Wang, Chao
Zhao, Peng
Zhang, Mingyue
Xu, Shiwen
Bao, Jun
author_sort Liu, Honggui
collection PubMed
description To improve the overall welfare levels of sows and to reduce stress levels at late 35-day lactation, we selected targeted behavioral indicators that might be associated with stress. Therefore, we monitored and evaluated the adaptive capability of two different breeds of sows to the farrowing environment. In this study, Damin sows (Large White × Min pig sows, n = 20) and Large White sows (n = 20) were farrowed in individual pens. Saliva was collected and tested for cortisol density at –15 min, and then at +15, 30, 60, 90, 120, 180 and 240 min after an adrenocorticotropic hormone (ACTH) stimulation test conducted at 20, 27 and 34 d post-partum. The postures, including ventral and lateral recumbency to other postures, defecating, urinating, sham-chewing and bar-biting behavior, were observed by video from 07:00 to 09:00 and from 13:00 to 15:00 on the 7th day of each week from the 3rd to the 5th week post-parturition. In addition, the concentrations of salivary interleukin (IL)-6, tumor necrosis factor (TNF)-α and secretory immunoglobulin (SIgA) were assayed after the observed behaviors. The results showed no significant difference between Damin sows and Large White sows in terms of behaviors at the 3rd week. Additionally, there were no significant differences between Damin and Large White sows in terms of the behaviors of ventral recumbency and bar-biting with the exception of lateral recumbency to other postures, sham-chewing, defecation and urination in the fifth week. Meanwhlie, there was significant difference between two breeds in term of ventral recumbency at the 4th week. The result of the ACTH test showed a significant difference between the Damin and Large White sows by the 27th and 34th days postpartum (P<0.01). In addition, the serological concentrations of IL-6 and TNF-α were not significantly different between the two breeds at the 3rd week postpartum. However, these indicators were significantly different at the 5th week postpartum (P = 0.000, and P = 0.003, respectively). The SIgA concentrations in saliva were significantly different between breeds at the 3rd week postpartum (P<0.01). In conclusion, both breeds of sows maybe in a state of stress after the 4th week postpartum. However, the Damin sows may be better than the Large White sows in terms of adapting to this farrowing environment.
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spelling pubmed-59515372018-05-25 Behavior and physiology of two different sow breeds in a farrowing environment during late 35-day lactation Liu, Honggui Yi, Ran Wang, Chao Zhao, Peng Zhang, Mingyue Xu, Shiwen Bao, Jun PLoS One Research Article To improve the overall welfare levels of sows and to reduce stress levels at late 35-day lactation, we selected targeted behavioral indicators that might be associated with stress. Therefore, we monitored and evaluated the adaptive capability of two different breeds of sows to the farrowing environment. In this study, Damin sows (Large White × Min pig sows, n = 20) and Large White sows (n = 20) were farrowed in individual pens. Saliva was collected and tested for cortisol density at –15 min, and then at +15, 30, 60, 90, 120, 180 and 240 min after an adrenocorticotropic hormone (ACTH) stimulation test conducted at 20, 27 and 34 d post-partum. The postures, including ventral and lateral recumbency to other postures, defecating, urinating, sham-chewing and bar-biting behavior, were observed by video from 07:00 to 09:00 and from 13:00 to 15:00 on the 7th day of each week from the 3rd to the 5th week post-parturition. In addition, the concentrations of salivary interleukin (IL)-6, tumor necrosis factor (TNF)-α and secretory immunoglobulin (SIgA) were assayed after the observed behaviors. The results showed no significant difference between Damin sows and Large White sows in terms of behaviors at the 3rd week. Additionally, there were no significant differences between Damin and Large White sows in terms of the behaviors of ventral recumbency and bar-biting with the exception of lateral recumbency to other postures, sham-chewing, defecation and urination in the fifth week. Meanwhlie, there was significant difference between two breeds in term of ventral recumbency at the 4th week. The result of the ACTH test showed a significant difference between the Damin and Large White sows by the 27th and 34th days postpartum (P<0.01). In addition, the serological concentrations of IL-6 and TNF-α were not significantly different between the two breeds at the 3rd week postpartum. However, these indicators were significantly different at the 5th week postpartum (P = 0.000, and P = 0.003, respectively). The SIgA concentrations in saliva were significantly different between breeds at the 3rd week postpartum (P<0.01). In conclusion, both breeds of sows maybe in a state of stress after the 4th week postpartum. However, the Damin sows may be better than the Large White sows in terms of adapting to this farrowing environment. Public Library of Science 2018-05-14 /pmc/articles/PMC5951537/ /pubmed/29758053 http://dx.doi.org/10.1371/journal.pone.0197152 Text en © 2018 Liu et al http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Research Article
Liu, Honggui
Yi, Ran
Wang, Chao
Zhao, Peng
Zhang, Mingyue
Xu, Shiwen
Bao, Jun
Behavior and physiology of two different sow breeds in a farrowing environment during late 35-day lactation
title Behavior and physiology of two different sow breeds in a farrowing environment during late 35-day lactation
title_full Behavior and physiology of two different sow breeds in a farrowing environment during late 35-day lactation
title_fullStr Behavior and physiology of two different sow breeds in a farrowing environment during late 35-day lactation
title_full_unstemmed Behavior and physiology of two different sow breeds in a farrowing environment during late 35-day lactation
title_short Behavior and physiology of two different sow breeds in a farrowing environment during late 35-day lactation
title_sort behavior and physiology of two different sow breeds in a farrowing environment during late 35-day lactation
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5951537/
https://www.ncbi.nlm.nih.gov/pubmed/29758053
http://dx.doi.org/10.1371/journal.pone.0197152
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