A conceptual model to describe heat stress in dairy cows from actual to questionable loops
Thermal environment is recognized to be one the most important ecological factor to determine domestic animal growth, development and productivity for direct and indirect effects on its physiology and behavior. Despite having specific and individual adaptation, is very common, within seasonal or diu...
- Autores:
-
Molina Benavides, Raúl Andrés
Sánchez- Guerrero, Hugo
Stanislao Atzori, Alberto
- Tipo de recurso:
- Article of journal
- Fecha de publicación:
- 2018
- Institución:
- Universidad Nacional de Colombia
- Repositorio:
- Universidad Nacional de Colombia
- Idioma:
- spa
- OAI Identifier:
- oai:repositorio.unal.edu.co:unal/68123
- Acceso en línea:
- https://repositorio.unal.edu.co/handle/unal/68123
http://bdigital.unal.edu.co/69156/
- Palabra clave:
- 55 Ciencias de la tierra / Earth sciences and geology
63 Agricultura y tecnologías relacionadas / Agriculture
Climate change
global warming
grazing
livestock production systems
milk production
system dynamics
temperature.
Cambio climático
calentamiento global
dinámica de sistemas
pastoreo
sistemas de producción pecuaria
producción de leche
temperatura
- Rights
- openAccess
- License
- Atribución-NoComercial 4.0 Internacional
Summary: | Thermal environment is recognized to be one the most important ecological factor to determine domestic animal growth, development and productivity for direct and indirect effects on its physiology and behavior. Despite having specific and individual adaptation, is very common, within seasonal or diurnal temperature variations, animals deal with situations outside their thermal comfort zone. Due to heat stress, dairy cows reduce milk production and fertility, and therefore, had achieved an increasing in metabolic disorders incidence, causing low revenues to farm in short and medium periods. Climate change is perhaps one of the most important factors on animal responses. This study aimed to describe and understand the interactions of variables associated with heat stress in dairy cattle. System thinking approach to this specific physiological mechanism might help to better focus managerial aspects related to grazing conditions and animal needs. A causal loop diagram annotation used to connect biological variables included in system boundaries. Causal connections were validated with literature citations on the heat stress influence. The most important feedback loops highlighted underline dominant structure and expected patterns. Four balancing loops involved in physiological mechanisms used by animals in order to reduce metabolic heat production and to regulate homeostasis of the internal temperature, were found. |
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