Academic Journal
Sustained heat stress elevated corneal and body surface temperatures and altered circulating leukocytes and metabolic indicators in wether lambs supplemented with ractopamine or zilpaterol
| العنوان: | Sustained heat stress elevated corneal and body surface temperatures and altered circulating leukocytes and metabolic indicators in wether lambs supplemented with ractopamine or zilpaterol |
|---|---|
| المؤلفون: | Barnes, Taylor L, Burrack, Rachel M, Schmidt, Ty B, Petersen, Jessica L, Yates, Dustin T |
| المساهمون: | National Institute of Food and Agriculture, National Institute of General Medical Sciences, Nebraska Agricultural Experiment Station, Biomedical and Obesity Research Core, Nebraska Center for Prevention of Obesity Diseases, National Institutes of Health |
| المصدر: | Journal of Animal Science ; volume 99, issue 9 ; ISSN 0021-8812 1525-3163 |
| بيانات النشر: | Oxford University Press (OUP) |
| سنة النشر: | 2021 |
| الوصف: | Understanding how β adrenergic agonists influence the physiology of heat stress could lead to mitigation options. We sought to investigate body surface temperatures in feedlot wethers supplemented with ractopamine or zilpaterol and exposed to heat stress for 18 d. Corneal and skin temperatures were assessed via infrared thermography at 1- and 2-m distances. Rectal temperatures and circulating leukocytes, metabolites, and electrolytes were also measured. Heat stress increased (P < 0.05) rectal temperatures in unsupplemented and zilpaterol-supplemented lambs but not in ractopamine-supplemented lambs. Heat stress also increased (P < 0.05) surface temperatures of the cornea, nose, ear, and back, regardless of supplement. Observations were comparable between thermography performed at 1 and 2 m, and higher emissivity settings generally produced less variation. Heat stress tended to increase (P = 0.08) blood monocytes in unsupplemented but not ractopamine- or zilpaterol-supplemented lambs. Granulocytes were increased (P < 0.05) by heat stress in ractopamine-supplemented lambs but decreased (P < 0.05) in zilpaterol-supplemented lambs. Blood glucose, triglycerides, and cholesterol did not differ among groups, and blood lactate was reduced (P < 0.05) by heat stress in zilpaterol-supplemented lambs only. Blood Na+ was reduced (P < 0.05) and Ca2+ increased (P < 0.05) by heat stress, regardless of supplement. These findings indicate that β1- and β2-adrenergic agonists differentially relieve some but not all heat stress-induced changes in stress indicators. Moreover, corneal and skin surface temperatures measured by infrared thermography reasonably identified body temperature changes at a distance of 2 m. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| DOI: | 10.1093/jas/skab236 |
| DOI: | 10.1093/jas/skab236/39620785/skab236.pdf |
| الاتاحة: | http://dx.doi.org/10.1093/jas/skab236 http://academic.oup.com/jas/advance-article-pdf/doi/10.1093/jas/skab236/39620785/skab236.pdf https://academic.oup.com/jas/article-pdf/99/9/skab236/40327851/skab236.pdf |
| Rights: | https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model |
| رقم الانضمام: | edsbas.8EB9599 |
| قاعدة البيانات: | BASE |
| ResultId |
1 |
|---|---|
| Header |
edsbas BASE edsbas.8EB9599 849 3 Academic Journal academicJournal 848.9462890625 |
| PLink |
https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&scope=site&db=edsbas&AN=edsbas.8EB9599&custid=s6537998&authtype=sso |
| FullText |
Array
(
[Availability] => 0
)
Array ( [0] => Array ( [Url] => http://dx.doi.org/10.1093/jas/skab236# [Name] => EDS - BASE [Category] => fullText [Text] => View record in BASE [MouseOverText] => View record in BASE ) ) |
| Items |
Array
(
[Name] => Title
[Label] => Title
[Group] => Ti
[Data] => Sustained heat stress elevated corneal and body surface temperatures and altered circulating leukocytes and metabolic indicators in wether lambs supplemented with ractopamine or zilpaterol
)
Array ( [Name] => Author [Label] => Authors [Group] => Au [Data] => <searchLink fieldCode="AR" term="%22Barnes%2C+Taylor+L%22">Barnes, Taylor L</searchLink><br /><searchLink fieldCode="AR" term="%22Burrack%2C+Rachel+M%22">Burrack, Rachel M</searchLink><br /><searchLink fieldCode="AR" term="%22Schmidt%2C+Ty+B%22">Schmidt, Ty B</searchLink><br /><searchLink fieldCode="AR" term="%22Petersen%2C+Jessica+L%22">Petersen, Jessica L</searchLink><br /><searchLink fieldCode="AR" term="%22Yates%2C+Dustin+T%22">Yates, Dustin T</searchLink> ) Array ( [Name] => Author [Label] => Contributors [Group] => Au [Data] => National Institute of Food and Agriculture<br />National Institute of General Medical Sciences<br />Nebraska Agricultural Experiment Station<br />Biomedical and Obesity Research Core<br />Nebraska Center for Prevention of Obesity Diseases<br />National Institutes of Health ) Array ( [Name] => TitleSource [Label] => Source [Group] => Src [Data] => Journal of Animal Science ; volume 99, issue 9 ; ISSN 0021-8812 1525-3163 ) Array ( [Name] => Publisher [Label] => Publisher Information [Group] => PubInfo [Data] => Oxford University Press (OUP) ) Array ( [Name] => DatePubCY [Label] => Publication Year [Group] => Date [Data] => 2021 ) Array ( [Name] => Abstract [Label] => Description [Group] => Ab [Data] => Understanding how β adrenergic agonists influence the physiology of heat stress could lead to mitigation options. We sought to investigate body surface temperatures in feedlot wethers supplemented with ractopamine or zilpaterol and exposed to heat stress for 18 d. Corneal and skin temperatures were assessed via infrared thermography at 1- and 2-m distances. Rectal temperatures and circulating leukocytes, metabolites, and electrolytes were also measured. Heat stress increased (P < 0.05) rectal temperatures in unsupplemented and zilpaterol-supplemented lambs but not in ractopamine-supplemented lambs. Heat stress also increased (P < 0.05) surface temperatures of the cornea, nose, ear, and back, regardless of supplement. Observations were comparable between thermography performed at 1 and 2 m, and higher emissivity settings generally produced less variation. Heat stress tended to increase (P = 0.08) blood monocytes in unsupplemented but not ractopamine- or zilpaterol-supplemented lambs. Granulocytes were increased (P < 0.05) by heat stress in ractopamine-supplemented lambs but decreased (P < 0.05) in zilpaterol-supplemented lambs. Blood glucose, triglycerides, and cholesterol did not differ among groups, and blood lactate was reduced (P < 0.05) by heat stress in zilpaterol-supplemented lambs only. Blood Na+ was reduced (P < 0.05) and Ca2+ increased (P < 0.05) by heat stress, regardless of supplement. These findings indicate that β1- and β2-adrenergic agonists differentially relieve some but not all heat stress-induced changes in stress indicators. Moreover, corneal and skin surface temperatures measured by infrared thermography reasonably identified body temperature changes at a distance of 2 m. ) Array ( [Name] => TypeDocument [Label] => Document Type [Group] => TypDoc [Data] => article in journal/newspaper ) Array ( [Name] => Language [Label] => Language [Group] => Lang [Data] => English ) Array ( [Name] => DOI [Label] => DOI [Group] => ID [Data] => 10.1093/jas/skab236 ) Array ( [Name] => DOI [Label] => DOI [Group] => ID [Data] => 10.1093/jas/skab236/39620785/skab236.pdf ) Array ( [Name] => URL [Label] => Availability [Group] => URL [Data] => http://dx.doi.org/10.1093/jas/skab236<br />http://academic.oup.com/jas/advance-article-pdf/doi/10.1093/jas/skab236/39620785/skab236.pdf<br />https://academic.oup.com/jas/article-pdf/99/9/skab236/40327851/skab236.pdf ) Array ( [Name] => Copyright [Label] => Rights [Group] => Cpyrght [Data] => https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model ) Array ( [Name] => AN [Label] => Accession Number [Group] => ID [Data] => edsbas.8EB9599 ) |
| RecordInfo |
Array
(
[BibEntity] => Array
(
[Identifiers] => Array
(
[0] => Array
(
[Type] => doi
[Value] => 10.1093/jas/skab236
)
)
[Languages] => Array
(
[0] => Array
(
[Text] => English
)
)
[Titles] => Array
(
[0] => Array
(
[TitleFull] => Sustained heat stress elevated corneal and body surface temperatures and altered circulating leukocytes and metabolic indicators in wether lambs supplemented with ractopamine or zilpaterol
[Type] => main
)
)
)
[BibRelationships] => Array
(
[HasContributorRelationships] => Array
(
[0] => Array
(
[PersonEntity] => Array
(
[Name] => Array
(
[NameFull] => Barnes, Taylor L
)
)
)
[1] => Array
(
[PersonEntity] => Array
(
[Name] => Array
(
[NameFull] => Burrack, Rachel M
)
)
)
[2] => Array
(
[PersonEntity] => Array
(
[Name] => Array
(
[NameFull] => Schmidt, Ty B
)
)
)
[3] => Array
(
[PersonEntity] => Array
(
[Name] => Array
(
[NameFull] => Petersen, Jessica L
)
)
)
[4] => Array
(
[PersonEntity] => Array
(
[Name] => Array
(
[NameFull] => Yates, Dustin T
)
)
)
[5] => Array
(
[PersonEntity] => Array
(
[Name] => Array
(
[NameFull] => National Institute of Food and Agriculture
)
)
)
[6] => Array
(
[PersonEntity] => Array
(
[Name] => Array
(
[NameFull] => National Institute of General Medical Sciences
)
)
)
[7] => Array
(
[PersonEntity] => Array
(
[Name] => Array
(
[NameFull] => Nebraska Agricultural Experiment Station
)
)
)
[8] => Array
(
[PersonEntity] => Array
(
[Name] => Array
(
[NameFull] => Biomedical and Obesity Research Core
)
)
)
[9] => Array
(
[PersonEntity] => Array
(
[Name] => Array
(
[NameFull] => Nebraska Center for Prevention of Obesity Diseases
)
)
)
[10] => Array
(
[PersonEntity] => Array
(
[Name] => Array
(
[NameFull] => National Institutes of Health
)
)
)
)
[IsPartOfRelationships] => Array
(
[0] => Array
(
[BibEntity] => Array
(
[Dates] => Array
(
[0] => Array
(
[D] => 01
[M] => 01
[Type] => published
[Y] => 2021
)
)
[Identifiers] => Array
(
[0] => Array
(
[Type] => issn-locals
[Value] => edsbas
)
)
[Titles] => Array
(
[0] => Array
(
[TitleFull] => Journal of Animal Science ; volume 99, issue 9 ; ISSN 0021-8812 1525-3163
[Type] => main
)
)
)
)
)
)
)
|
| IllustrationInfo |