Workplace and Gravity: Two Mechanized Cow Milking Systems Compared for Human Physiological Strains

Despite the development of dairy farm mechanization, milking operations are still associated with heavy workloads which result in human physiological strains. This study investigated the role of gravity force in the linkage between load carriage and workers’ physiological strains in milking work tas...

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Autores principales:	A Hayati, A Marzban, M. A Asoodar
Formato:	article
Lenguaje:	EN FA
Publicado:	Ferdowsi University of Mashhad 2022
Materias:	energy expenditure load carriage stanchion barn tandem parlor Agriculture (General) S1-972 Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/4667281cadf04bafa2d2120fc91da3ca
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spelling	oai:doaj.org-article:4667281cadf04bafa2d2120fc91da3ca2021-11-29T06:32:46ZWorkplace and Gravity: Two Mechanized Cow Milking Systems Compared for Human Physiological Strains2228-68292423-394310.22067/jam.2020.58607.0https://doaj.org/article/4667281cadf04bafa2d2120fc91da3ca2022-03-01T00:00:00Zhttps://jame.um.ac.ir/article_39305_7ea2674a9da05d9cd8c2ce524dfc6c44.pdfhttps://doaj.org/toc/2228-6829https://doaj.org/toc/2423-3943Despite the development of dairy farm mechanization, milking operations are still associated with heavy workloads which result in human physiological strains. This study investigated the role of gravity force in the linkage between load carriage and workers’ physiological strains in milking work tasks of two major cow milking systems (milking in stanchion barns and tandem parlors). These two milking methods similarly included washing the teats, attaching the cluster, and detaching the cluster. Human energy expenditure (EE) was calculated and load carriage direction in comparison with gravity (LCG) was tracked among twenty-four male workers. The highest heart rate (107 beats min-1) and EE (35.5 kJ min-1) were reported for attaching the cluster in the tandem parlor milking method. Tandem parlor milking caused higher human physiological strains and higher proportions of converse LCG compared with stanchion barn milking. By developing dairy farm mechanization from stanchion barn to tandem parlor, cow milking workers are induced to apply higher forces including converse LCG causing higher human physiological strains. Mechanization of dairy farms should be developed not only for improving the rate of work and performance but also for making conditions toward a reduction in the use of human physical forces.A HayatiA MarzbanM. A AsoodarFerdowsi University of Mashhadarticleenergy expenditureload carriagestanchion barntandem parlorAgriculture (General)S1-972Engineering (General). Civil engineering (General)TA1-2040ENFAJournal of Agricultural Machinery, Vol 12, Iss 1, Pp 21-32 (2022)
institution	DOAJ
collection	DOAJ
language	EN FA
topic	energy expenditure load carriage stanchion barn tandem parlor Agriculture (General) S1-972 Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	energy expenditure load carriage stanchion barn tandem parlor Agriculture (General) S1-972 Engineering (General). Civil engineering (General) TA1-2040 A Hayati A Marzban M. A Asoodar Workplace and Gravity: Two Mechanized Cow Milking Systems Compared for Human Physiological Strains
description	Despite the development of dairy farm mechanization, milking operations are still associated with heavy workloads which result in human physiological strains. This study investigated the role of gravity force in the linkage between load carriage and workers’ physiological strains in milking work tasks of two major cow milking systems (milking in stanchion barns and tandem parlors). These two milking methods similarly included washing the teats, attaching the cluster, and detaching the cluster. Human energy expenditure (EE) was calculated and load carriage direction in comparison with gravity (LCG) was tracked among twenty-four male workers. The highest heart rate (107 beats min-1) and EE (35.5 kJ min-1) were reported for attaching the cluster in the tandem parlor milking method. Tandem parlor milking caused higher human physiological strains and higher proportions of converse LCG compared with stanchion barn milking. By developing dairy farm mechanization from stanchion barn to tandem parlor, cow milking workers are induced to apply higher forces including converse LCG causing higher human physiological strains. Mechanization of dairy farms should be developed not only for improving the rate of work and performance but also for making conditions toward a reduction in the use of human physical forces.
format	article
author	A Hayati A Marzban M. A Asoodar
author_facet	A Hayati A Marzban M. A Asoodar
author_sort	A Hayati
title	Workplace and Gravity: Two Mechanized Cow Milking Systems Compared for Human Physiological Strains
title_short	Workplace and Gravity: Two Mechanized Cow Milking Systems Compared for Human Physiological Strains
title_full	Workplace and Gravity: Two Mechanized Cow Milking Systems Compared for Human Physiological Strains
title_fullStr	Workplace and Gravity: Two Mechanized Cow Milking Systems Compared for Human Physiological Strains
title_full_unstemmed	Workplace and Gravity: Two Mechanized Cow Milking Systems Compared for Human Physiological Strains
title_sort	workplace and gravity: two mechanized cow milking systems compared for human physiological strains
publisher	Ferdowsi University of Mashhad
publishDate	2022
url	https://doaj.org/article/4667281cadf04bafa2d2120fc91da3ca
work_keys_str_mv	AT ahayati workplaceandgravitytwomechanizedcowmilkingsystemscomparedforhumanphysiologicalstrains AT amarzban workplaceandgravitytwomechanizedcowmilkingsystemscomparedforhumanphysiologicalstrains AT maasoodar workplaceandgravitytwomechanizedcowmilkingsystemscomparedforhumanphysiologicalstrains
_version_	1718407521412055040

Workplace and Gravity: Two Mechanized Cow Milking Systems Compared for Human Physiological Strains

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