The present study used surveys of the cattle sector over the period of 2009-2015 to develop a typology of cattle farms to evaluate their evolution over time and to identify variables that may be associated with systems' adaptive changes and continuance. Four groups of farms were defined using multivariate analyses as follows: Group I are small calf-cow operations using non-specialized beef breeds; Group II is similar to Group I but employs specialized beef breeds; Group III is dedicated to finishing cattle, and Group IV are larger farms (>1000 animals) with a complete cycle of breeding and fattening. In general, beef cattle production in the temperate-Mediterranean Southern Zone of Chile is declining in response to the opening up of the economy that allows for ample imports, the high opportunity cost of land, and recurrent droughts associated with climate change. Current policies and regulations have modified farms' businesses models depending on their ease of access to markets, farm size and financial capacity. The defined groups require different development paths and strategies. Sustainable intensification is an alternative strategy for farms in Group I and II, particularly if they were to contract the finishing stage of their cattle with Group III farms. In contrast, it is suggested that Group IV farms concentrate on pastoral production using low external inputs to enhance the production of "natural" beef for high-value niche markets, with positive externalities.
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http://dx.doi.org/10.3390/ani9121135 | DOI Listing |
Biology (Basel)
January 2025
Instituto de Ciencias Marinas y Limnológicas, Universidad Austral de Chile, Independencia 631, Valdivia 5090000, Chile.
Intersexuality is a reproductive phenomenon that occurs in some gonochoric species and refers to the simultaneous presence of both male and female gametes within the same individual. Although this phenomenon has been reported in various invertebrate species, many aspects remain poorly understood, especially in marine mussels. However, it has been suggested that the prevalence of parasites within populations could induce the occurrence of intersex animals.
View Article and Find Full Text PDFSci Rep
January 2025
Geology Department Middlebury College, Middlebury, Vermont, 05753, USA.
Inland-normal faulting is recognised as an important process following large subduction earthquakes. The lack of data limits the understanding of how normal fault reactivation relates to the subduction earthquake cycle. We characterised the palaeoseismology of the Atacama fault system (AFS) in the Chilean subduction zone.
View Article and Find Full Text PDFJ Funct Morphol Kinesiol
December 2024
Integrative Laboratory of Biomechanics and Physiology of Effort, (LIBFE), School of Kinesiology, Faculty of Medicine, Universidad de los Andes, Santiago 7620001, Chile.
Unlabelled: The purpose of this study was to assess the methodology for selecting sports talent in the Chilean Promising Athletes Program (CPAP).
Methods: The standing broad jump (SBJ), medicine ball chest throw (MBCT), thirty-meter running sprint (RS-30), Agility-T (T-test), and height were analyzed in 3060 schoolchildren from Chile, grouped by sex, age, geographical area (north, central and south) and maturity status at peak height velocity (PHV) in pre-, circa- and post-PHV.
Results: Superior differences were found in boys for all age ranges in SBJ, RS-30, T-test, and MBCT ( < 0.
Int J Retina Vitreous
December 2024
Federal University of São Paulo, São Paulo, Brazil.
Med Clin (Barc)
December 2024
Laboratorio Regional de Salud Pública, Consejería de Salud de la Región de Murcia, Murcia, Spain.
Introduction: Soils contaminated by heavy metals such as lead, cadmium, and arsenic represent a significant health risk. The Sierra Minera of Cartagena (Spain) is an area historically contaminated by mining activities. This study evaluates the exposure to heavy metals and proposes a clinical screening model for its management in primary care.
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