Cumulative effect of different acute stressors on physiological and hormonal responses and milk yield in lactating Saanen goats

Detalhes bibliográficos
Autor(a) principal: Vasconcelos, Marta Liliane de
Data de Publicação: 2022
Outros Autores: Silva, Priscila dos Santos, Merighe, Giovana Krempel Fonseca, Oliveira, Sandra Aparecida de, Negrão, João Alberto
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.
id UEL-11_b17ad385faf865dd01cec778de2e8e6a
oai_identifier_str oai:ojs.pkp.sfu.ca:article/45601
network_acronym_str UEL-11
network_name_str Semina. Ciências Agrárias (Online)
repository_id_str
spelling 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