Reproduction and reproductive tract morphology of male and female pigs whose mothers were heat stressed during the second month of gestation
The primary objective was to assess the development of fetal gonads and measure the subsequent reproductive capacity of boars and gilts whose mother was either subjected to gestational heat stress (GHS) or thermoneutral (GTN; control) conditions during pregnancy. Gilts were subjected to either GHS (...
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ftpubmed:oai:pubmedcentral.nih.gov:7704028 2023-05-15T16:32:13+02:00 Reproduction and reproductive tract morphology of male and female pigs whose mothers were heat stressed during the second month of gestation Bernhard, Cathy J Sharp, Katharine G Safranski, Timothy J Lamberson, William R Lucy, Matthew C 2020-11-05 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7704028/ http://www.ncbi.nlm.nih.gov/pubmed/33150362 https://doi.org/10.1093/jas/skaa352 en eng Oxford University Press http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7704028/ http://www.ncbi.nlm.nih.gov/pubmed/33150362 http://dx.doi.org/10.1093/jas/skaa352 © The Author(s) 2020. Published by Oxford University Press on behalf of the American Society of Animal Science. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com. https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model This article is published and distributed under the terms of the Oxford University Press, Standard Journals Publication Model (https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model) J Anim Sci Reproduction Text 2020 ftpubmed https://doi.org/10.1093/jas/skaa352 2021-11-07T01:29:50Z The primary objective was to assess the development of fetal gonads and measure the subsequent reproductive capacity of boars and gilts whose mother was either subjected to gestational heat stress (GHS) or thermoneutral (GTN; control) conditions during pregnancy. Gilts were subjected to either GHS (28 to 38 °C; 65% to 88% relative humidity [RH]; n = 30) or GTN (17 to 22 °C; 56% to 65% RH; n = 29) for the second month of gestation (a period that coincides with a critical window of gonadal development). A subset of GHS (n = 12) and GTN (n = 11) gilts was sacrificed immediately following treatment for the collection of pregnancy data. The remaining gilts (n = 18 GHS and n = 18 GTN) were allowed to farrow. Female offspring from the farrowed gilts were studied through puberty, first insemination, and early pregnancy when fetal tissues were again collected. During the treatment period, GHS gilts had greater (P < 0.001) rectal temperature and respiration rate at both measurement time points (morning and afternoon) compared with GTN gilts. When assessed at the end of the second month of gestation, the total number of viable fetuses did not differ (P > 0.10) for GHS vs. GTN. Likewise, the weight of the fetus, placenta, fetal testes, and fetal ovaries were similar (P > 0.10) for GHS and GTN pregnancies. There was a tendency for an effect of treatment (63.3 ± 2.3 vs. 70.1 ± 2.6; GHS vs. GTN; P < 0.073) on the number of oogonia per histological section in the fetal ovaries. There was no effect of treatment on the number of prespermatogonia per histological section in the fetal testis. For gilts farrowing after treatment, litter size, piglet birth weight, and weaning weight were similar (P > 0.10) for the GHS and GTN gilts. Testes collected from castrated GHS boars had fewer prespermatogonia per seminiferous tubule cross section (P < 0.049). Female offspring from the GHS (n = 30) or GTN (n = 37) sows reached puberty at a similar age, and their pregnancies (ninth week of gestation) had fewer corpora lutea ... Text GTN-P PubMed Central (PMC) Journal of Animal Science 98 11 |
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Reproduction |
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Reproduction Bernhard, Cathy J Sharp, Katharine G Safranski, Timothy J Lamberson, William R Lucy, Matthew C Reproduction and reproductive tract morphology of male and female pigs whose mothers were heat stressed during the second month of gestation |
topic_facet |
Reproduction |
description |
The primary objective was to assess the development of fetal gonads and measure the subsequent reproductive capacity of boars and gilts whose mother was either subjected to gestational heat stress (GHS) or thermoneutral (GTN; control) conditions during pregnancy. Gilts were subjected to either GHS (28 to 38 °C; 65% to 88% relative humidity [RH]; n = 30) or GTN (17 to 22 °C; 56% to 65% RH; n = 29) for the second month of gestation (a period that coincides with a critical window of gonadal development). A subset of GHS (n = 12) and GTN (n = 11) gilts was sacrificed immediately following treatment for the collection of pregnancy data. The remaining gilts (n = 18 GHS and n = 18 GTN) were allowed to farrow. Female offspring from the farrowed gilts were studied through puberty, first insemination, and early pregnancy when fetal tissues were again collected. During the treatment period, GHS gilts had greater (P < 0.001) rectal temperature and respiration rate at both measurement time points (morning and afternoon) compared with GTN gilts. When assessed at the end of the second month of gestation, the total number of viable fetuses did not differ (P > 0.10) for GHS vs. GTN. Likewise, the weight of the fetus, placenta, fetal testes, and fetal ovaries were similar (P > 0.10) for GHS and GTN pregnancies. There was a tendency for an effect of treatment (63.3 ± 2.3 vs. 70.1 ± 2.6; GHS vs. GTN; P < 0.073) on the number of oogonia per histological section in the fetal ovaries. There was no effect of treatment on the number of prespermatogonia per histological section in the fetal testis. For gilts farrowing after treatment, litter size, piglet birth weight, and weaning weight were similar (P > 0.10) for the GHS and GTN gilts. Testes collected from castrated GHS boars had fewer prespermatogonia per seminiferous tubule cross section (P < 0.049). Female offspring from the GHS (n = 30) or GTN (n = 37) sows reached puberty at a similar age, and their pregnancies (ninth week of gestation) had fewer corpora lutea ... |
format |
Text |
author |
Bernhard, Cathy J Sharp, Katharine G Safranski, Timothy J Lamberson, William R Lucy, Matthew C |
author_facet |
Bernhard, Cathy J Sharp, Katharine G Safranski, Timothy J Lamberson, William R Lucy, Matthew C |
author_sort |
Bernhard, Cathy J |
title |
Reproduction and reproductive tract morphology of male and female pigs whose mothers were heat stressed during the second month of gestation |
title_short |
Reproduction and reproductive tract morphology of male and female pigs whose mothers were heat stressed during the second month of gestation |
title_full |
Reproduction and reproductive tract morphology of male and female pigs whose mothers were heat stressed during the second month of gestation |
title_fullStr |
Reproduction and reproductive tract morphology of male and female pigs whose mothers were heat stressed during the second month of gestation |
title_full_unstemmed |
Reproduction and reproductive tract morphology of male and female pigs whose mothers were heat stressed during the second month of gestation |
title_sort |
reproduction and reproductive tract morphology of male and female pigs whose mothers were heat stressed during the second month of gestation |
publisher |
Oxford University Press |
publishDate |
2020 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7704028/ http://www.ncbi.nlm.nih.gov/pubmed/33150362 https://doi.org/10.1093/jas/skaa352 |
genre |
GTN-P |
genre_facet |
GTN-P |
op_source |
J Anim Sci |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7704028/ http://www.ncbi.nlm.nih.gov/pubmed/33150362 http://dx.doi.org/10.1093/jas/skaa352 |
op_rights |
© The Author(s) 2020. Published by Oxford University Press on behalf of the American Society of Animal Science. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com. https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model This article is published and distributed under the terms of the Oxford University Press, Standard Journals Publication Model (https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model) |
op_doi |
https://doi.org/10.1093/jas/skaa352 |
container_title |
Journal of Animal Science |
container_volume |
98 |
container_issue |
11 |
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1766021975563567104 |