SABIIA - Sistema Aberto e Integrado de Informação em Agricultura (Sabiia)

Xie, Fang; Horan, Richard D.; Wolf, Christopher A..

Bovine tuberculosis (bTB) in cattle has caused significant economic losses to livestock producers and has proven difficult to eradicate. It is suspected that cattle movement across different farms and regions is one of the key factors of bTB transmission in the United States. Prior attempts to model the epidemiology of bTB infection within cattle to predict disease transmission have not adequately captured the behavioral aspects of trade. A better understanding of livestock trade patterns would help in predicting disease transmission and the associated economic effects. In this paper, we develop a gravity model of livestock trade and link it to an epidemiological model of bTB transmission, with the goal being that this information could lead to improved...

Disease and Behavioral Dynamics for Brucellosis in Elk and Cattle in the Greater Yellowstone Area

Palavras-chave: Bovine tuberculosis; Gravity model; Disease management; Resource /Energy Economics and Policy.

Ano: 2009

URL: http://purl.umn.edu/49382

Disease and Behavioral Dynamics for Brucellosis Control in Elk and Cattle in the Greater Yellowstone Area

Xie, Fang.

This paper investigates private responses to policies that have been proposed to confront a human-wildlife conflict that likely emerged as a result of a management regime designed to address an earlier human-wildlife conflict. The artificial elk feeding which is intended to conserve wildlife and reduce elk predation on cattle forage, now led to the emergence of brucellosis in elk and has allowed it to become endemic, in turn imposing great risk to the livestock. We propose a joint model of wildlife and livestock population and disease dynamics, and behavioral dynamics, to gain insight into the challenges of managing brucellosis infection between livestock and the Jackson elk herd in Wyoming. We examine population and disease dynamics under several...

Tipo: Thesis or Dissertation

Ano: 2008

URL: http://purl.umn.edu/42905

This paper investigates private responses and ecological impacts of policies proposed to confront the problem of brucellosis being spread from elk to cattle in Wyoming. The policies consist of combinations of changes in elk feeding and population levels. Farmers’ responses to these dynamics are modeled along with the associated impacts to livestock population dynamics. Our findings suggest that feedbacks between jointly determined disease dynamics and decentralized economic behavior matter, and the elk feedgrounds do not actually generate economic harm to the individual farmers.

Disease and Behavioral Dynamics for Brucellosis in Elk and Cattle in the Greater Yellowstone Area

Palavras-chave: Bioeconomics; Disease ecology; Epidemiology; Replicator dynamics; Susceptible-infected-recovered (SIR) model; Wildlife disease; Wildlife feeding; Resource /Energy Economics and Policy.

Ano: 2009

URL: http://purl.umn.edu/51707

We investigate private responses to policies that have been proposed to confront a human-wildlife conflict that likely emerged as a result of a management regime designed to address an earlier human-wildlife conflict: specifically, brucellosis in elk that has spread to cattle in Wyoming. We examine population and disease dynamics under several different management options for the Jackson elk herd, where each option involves a combination of changes in elk feeding and population levels. Farmer responses to these dynamics, when vaccination is not required, are modeled along with the associated impacts to livestock dynamics. We also examine livestock management when there is little-to-no consideration given to the risk posed by elk. In practice, the...

Disease and Behavioral Dynamics for Brucellosis Control in Elk and Cattle in the Greater Yellowstone Area

Palavras-chave: Livestock Production/Industries.

Ano: 2008

URL: http://purl.umn.edu/6404

Optimal Control of Brucellosis in Bison in the Yellowstone National Park Area

This paper investigates private responses and ecological impacts of policies proposed to confront the problem of brucellosis being spread from elk to cattle in Wyoming. The policies consist of combinations of changes in elk feeding and population levels. Farmers' responses to these dynamics are modeled along with the associated impacts to livestock population dynamics. Our findings suggest that feedbacks between jointly determined disease dynamics and decentralized economic behavior matter, and the elk feedgrounds do not actually generate economic harm to the individual farmers.

Tipo: Journal Article

Palavras-chave: Bioeconomics; Brucellosis; Disease ecology; Epidemiology; Replicator dynamics; Susceptible-infected-recovered (SIR) model; Wildlife disease; Wildlife feeding; Livestock Production/Industries; Resource /Energy Economics and Policy.

Ano: 2009

URL: http://purl.umn.edu/50165

Brucellosis is a highly infectious bacterial disease that causes infected females to abort their calves. It has caused devastating losses to U.S. farmers over the last century. The only known focus of Brucellosis left in the nation is wildlife such as bison and elk in the Greater Yellowstone Area. Vaccination and test-and-slaughter have been applied to brucellosis management in bison, and there has been discussion that a combination of both could potentially eradicate the disease in the Yellowstone National Park. However, there is no study on how to allocate resources between the two actions. This paper investigates the optimal allocation of these two selective management options, in a bioeconomic framework, when there are both existence and recreational...