Estimativa do impacto econômico da mastite: estudo de caso em um rebanho da raça Holandesa em condições tropicais

Abstract

The objectives were to simulate, analyze and quantify the economic impact of the presence of mastitis in a herd of Holstein located in the Zona da Mata of Minas Gerais in three different situations. In the first situation (I) were considered ideal data health of the mammary gland, in the second situation (II) were considered real data mammary gland health status and third (III) actual data were considered after treatment of subclinical cases and disposal of chronic cases of mastitis. The survey was conducted by means of simulation using the tool "Mastitis calculation tool at farm level" (Huijps et al., 2008), developed for the dairy herds in the Netherlands and estimates the cost of mastitis in a retrospective period of twelve months. In situation I, the number of clinical cases per year and somatic cell count considered ideal positively impacted the results of the annual total economic impact of mastitis. Situation In II, there was a 30% increase in annual total economic impact of mastitis in relation to I situation, and as more representative, losses due to subclinical mastitis in response to high somatic cell count of the tank and individual animal. In situation III, after treatment of subclinical cases and disposal of animals with chronic mastitis, the representativeness of the losses due to subclinical mastitis decreased, however, the annual total economic impact of mastitis increased over the situation II, mainly due to the increase of economic impact of drug spending and disposal of animals. The results of the economic impact of mastitis coupled with analysis of CCS and knowledge of the dynamics of subclinical allowed see the factors that influence the losses due to the presence of mastitis in the herd.