Cumulative effect of different acute stressors on physiological and hormonal responses and milk yield in lactating Saanen goats
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Semina. Ciências Agrárias (Online) |
Texto Completo: | https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/45601 |
Resumo: | This study addresses the hypothesis that acute stress can cumulatively cause a decrease in milk yield in Saanen goats. In fact, dairy animals are subject to several environmental and management challenges that may cause acute stress during the same lactation. However, the cumulative effect of acute stress on milk yield remains unclear. Thus, the objective of this study was to evaluate the effects of different acute stressors on milk yield and milk quality in goats. Thirty Saanen goats were either maintained on their usual routine and comfort conditions (control group) or subjected to different environmental stressors (heat stress, adrenocorticotropic hormone [ACTH] administration, hoof care, and rain). These stressful challenges were performed sequentially, one challenge per day, on four consecutive days to evaluate the influence of the challenge on milk yield and milk quality. The acute stress imposed on goats caused significant changes in respiratory rate, rectal temperature, cortisol, insulin, triiodothyronine, insulin-like growth factor 1, and glucose concentrations when compared to the control group. Although these acute-stress-triggered physiological responses are fundamental to restoring homeostasis, the cumulative effects of different imposed challenges caused a change in hormone release, an increase in somatic cell count (SCC), and a decrease in milk yield. In this context, the results of this study indicate that farmers should avoid concurrently subjecting goats to management and environmental challenges that can induce acute stress because these stressors have a negative and cumulative impact on SCC and milk yield. |
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Semina. Ciências Agrárias (Online) |
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Cumulative effect of different acute stressors on physiological and hormonal responses and milk yield in lactating Saanen goatsEfeito cumulativo de diferentes estressores agudos sobre as respostas fisiológicas, hormonais e produção de leite de cabras Saanen em lactaçãoAcute stressorsGoatLactationMammary gland.Estressores agudosCabraLactaçãoGlândula mamária.This study addresses the hypothesis that acute stress can cumulatively cause a decrease in milk yield in Saanen goats. In fact, dairy animals are subject to several environmental and management challenges that may cause acute stress during the same lactation. However, the cumulative effect of acute stress on milk yield remains unclear. Thus, the objective of this study was to evaluate the effects of different acute stressors on milk yield and milk quality in goats. Thirty Saanen goats were either maintained on their usual routine and comfort conditions (control group) or subjected to different environmental stressors (heat stress, adrenocorticotropic hormone [ACTH] administration, hoof care, and rain). These stressful challenges were performed sequentially, one challenge per day, on four consecutive days to evaluate the influence of the challenge on milk yield and milk quality. The acute stress imposed on goats caused significant changes in respiratory rate, rectal temperature, cortisol, insulin, triiodothyronine, insulin-like growth factor 1, and glucose concentrations when compared to the control group. Although these acute-stress-triggered physiological responses are fundamental to restoring homeostasis, the cumulative effects of different imposed challenges caused a change in hormone release, an increase in somatic cell count (SCC), and a decrease in milk yield. In this context, the results of this study indicate that farmers should avoid concurrently subjecting goats to management and environmental challenges that can induce acute stress because these stressors have a negative and cumulative impact on SCC and milk yield.Este estudo aborda a hipótese de que o estresse agudo pode causar cumulativamente uma diminuição na produção de leite de cabras Saanen. De fato, os animais leiteiros estão sujeitos a vários desafios ambientais e de manejo que podem causar estresse agudo durante a mesma lactação. No entanto, o efeito cumulativo do estresse agudo na produção de leite ainda não está claro. Assim, o objetivo deste estudo foi avaliar os efeitos de diferentes estressores agudos na produção e qualidade de leite de cabras Saanen. Trinta cabras Saanen foram mantidas em sua rotina habitual e condições de conforto (grupo controle) ou submetidas a diferentes estressores ambientais (estresse por calor, administração de hormônio adrenocorticotrófico [ACTH], cuidados com os cascos e chuva). Esses desafios estressantes foram realizados sequencialmente, um desafio por dia, em quatro dias consecutivos para avaliar a influência do desafio na produção e qualidade do leite. O estresse agudo imposto as cabras causou alterações significativas na frequência respiratória, temperatura retal, cortisol, insulina, triiodotironina, fator de crescimento semelhante à insulina 1 e concentrações de glicose quando comparado ao grupo controle. Embora essas respostas fisiológicas desencadeadas pelo estresse agudo sejam fundamentais para restaurar a homeostase, os efeitos cumulativos de diferentes desafios impostos causaram uma mudança na liberação de hormônios, um aumento na contagem de células somáticas (CCS) e uma diminuição na produção de leite. Neste contexto, os resultados deste estudo indicam que os produtores devem evitar submeter as cabras concomitantemente a desafios de manejo e ambientais que possam induzir estresse agudo, pois esses estressores têm impacto negativo e cumulativo na CCS e na produção de leite.UEL2022-06-15info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/4560110.5433/1679-0359.2022v43n5p1891Semina: Ciências Agrárias; Vol. 43 No. 5 (2022); 1891-1906Semina: Ciências Agrárias; v. 43 n. 5 (2022); 1891-19061679-03591676-546Xreponame:Semina. Ciências Agrárias (Online)instname:Universidade Estadual de Londrina (UEL)instacron:UELenghttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/45601/32165Copyright (c) 2022 Semina: Ciências Agráriashttp://creativecommons.org/licenses/by-nc/4.0info:eu-repo/semantics/openAccessVasconcelos, Marta Liliane deSilva, Priscila dos SantosMerighe, Giovana Krempel FonsecaOliveira, Sandra Aparecida deNegrão, João Alberto2022-11-17T13:29:38Zoai:ojs.pkp.sfu.ca:article/45601Revistahttp://www.uel.br/revistas/uel/index.php/semagrariasPUBhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/oaisemina.agrarias@uel.br1679-03591676-546Xopendoar:2022-11-17T13:29:38Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)false |
dc.title.none.fl_str_mv |
Cumulative effect of different acute stressors on physiological and hormonal responses and milk yield in lactating Saanen goats Efeito cumulativo de diferentes estressores agudos sobre as respostas fisiológicas, hormonais e produção de leite de cabras Saanen em lactação |
title |
Cumulative effect of different acute stressors on physiological and hormonal responses and milk yield in lactating Saanen goats |
spellingShingle |
Cumulative effect of different acute stressors on physiological and hormonal responses and milk yield in lactating Saanen goats Vasconcelos, Marta Liliane de Acute stressors Goat Lactation Mammary gland. Estressores agudos Cabra Lactação Glândula mamária. |
title_short |
Cumulative effect of different acute stressors on physiological and hormonal responses and milk yield in lactating Saanen goats |
title_full |
Cumulative effect of different acute stressors on physiological and hormonal responses and milk yield in lactating Saanen goats |
title_fullStr |
Cumulative effect of different acute stressors on physiological and hormonal responses and milk yield in lactating Saanen goats |
title_full_unstemmed |
Cumulative effect of different acute stressors on physiological and hormonal responses and milk yield in lactating Saanen goats |
title_sort |
Cumulative effect of different acute stressors on physiological and hormonal responses and milk yield in lactating Saanen goats |
author |
Vasconcelos, Marta Liliane de |
author_facet |
Vasconcelos, Marta Liliane de Silva, Priscila dos Santos Merighe, Giovana Krempel Fonseca Oliveira, Sandra Aparecida de Negrão, João Alberto |
author_role |
author |
author2 |
Silva, Priscila dos Santos Merighe, Giovana Krempel Fonseca Oliveira, Sandra Aparecida de Negrão, João Alberto |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Vasconcelos, Marta Liliane de Silva, Priscila dos Santos Merighe, Giovana Krempel Fonseca Oliveira, Sandra Aparecida de Negrão, João Alberto |
dc.subject.por.fl_str_mv |
Acute stressors Goat Lactation Mammary gland. Estressores agudos Cabra Lactação Glândula mamária. |
topic |
Acute stressors Goat Lactation Mammary gland. Estressores agudos Cabra Lactação Glândula mamária. |
description |
This study addresses the hypothesis that acute stress can cumulatively cause a decrease in milk yield in Saanen goats. In fact, dairy animals are subject to several environmental and management challenges that may cause acute stress during the same lactation. However, the cumulative effect of acute stress on milk yield remains unclear. Thus, the objective of this study was to evaluate the effects of different acute stressors on milk yield and milk quality in goats. Thirty Saanen goats were either maintained on their usual routine and comfort conditions (control group) or subjected to different environmental stressors (heat stress, adrenocorticotropic hormone [ACTH] administration, hoof care, and rain). These stressful challenges were performed sequentially, one challenge per day, on four consecutive days to evaluate the influence of the challenge on milk yield and milk quality. The acute stress imposed on goats caused significant changes in respiratory rate, rectal temperature, cortisol, insulin, triiodothyronine, insulin-like growth factor 1, and glucose concentrations when compared to the control group. Although these acute-stress-triggered physiological responses are fundamental to restoring homeostasis, the cumulative effects of different imposed challenges caused a change in hormone release, an increase in somatic cell count (SCC), and a decrease in milk yield. In this context, the results of this study indicate that farmers should avoid concurrently subjecting goats to management and environmental challenges that can induce acute stress because these stressors have a negative and cumulative impact on SCC and milk yield. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-06-15 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/45601 10.5433/1679-0359.2022v43n5p1891 |
url |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/45601 |
identifier_str_mv |
10.5433/1679-0359.2022v43n5p1891 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/45601/32165 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2022 Semina: Ciências Agrárias http://creativecommons.org/licenses/by-nc/4.0 info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2022 Semina: Ciências Agrárias http://creativecommons.org/licenses/by-nc/4.0 |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
UEL |
publisher.none.fl_str_mv |
UEL |
dc.source.none.fl_str_mv |
Semina: Ciências Agrárias; Vol. 43 No. 5 (2022); 1891-1906 Semina: Ciências Agrárias; v. 43 n. 5 (2022); 1891-1906 1679-0359 1676-546X reponame:Semina. Ciências Agrárias (Online) instname:Universidade Estadual de Londrina (UEL) instacron:UEL |
instname_str |
Universidade Estadual de Londrina (UEL) |
instacron_str |
UEL |
institution |
UEL |
reponame_str |
Semina. Ciências Agrárias (Online) |
collection |
Semina. Ciências Agrárias (Online) |
repository.name.fl_str_mv |
Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL) |
repository.mail.fl_str_mv |
semina.agrarias@uel.br |
_version_ |
1799306086136676352 |