Factors affecting the performance of Pantaneiro horses

Abstract

-This study aimed to assess the physical performance of Pantaneiro horses with and without equine infectious anemia (EIA) under functional conditions of cattle management. The horses were subjected to a performance test and split into two groups according to a completely randomized design: animals were chosen from populations testing positive and negative for EIA. Performance was measured as a function of a data envelopment analysis (DEA) model considering four outputs and one unitary input. The output measures were the distance achieved in the performance test, hematocrit as a weighted average over the test duration, respiratory rate as weighted average over the test duration, and the level of lactic acid at the test termination. Weights for the hematocrit and the respiratory rate output variables were determined by means of factor analysis. The performance score was a weighted average of the output variables with the weights defined by the averages of the optimum individual multipliers in the DEA analysis. Contextual variables of interest were age, horse weight, room temperature, and corporal temperature. Only groups and room temperature were statistically significant effects, as indicated by a bootstrap analysis. The performance of group positive for EIA is significantly lower than that of the group negative for EIA and room temperature has a negative effect.

High Genomic Variability in Equine Infectious Anemia Virus Obtained from Naturally Infected Horses in Pantanal, Brazil: An Endemic Region Case

“…In the northern Pantanal municipality of Poconé, MT, it was verified that 31.5% of working equids are infected [16]. Therefore, the situation in the Pantanal region is of particular concern, due to the important role of equids in local livestock production, in addition to the economic losses associated with the disease [17].…”

Identification of large genetic variations in the equine infectious anemia virus tat ‐ gag genomic region

“…Historically, equines such as horses, mules, and donkeys have been essential to the Pantanal livestock industry, the main economic industry in this region, due to the use of these animals for the management of cattle herds. However, EIA may compromise the physical performance of equines and indirectly affect livestock activity (Silva et al, 2001;Souza et al, 2018).…”

Modelagem matemática da anemia infecciosa equina considerando transmissões direta e por mutuca

“…Apesar de tratar da região Norte do Brasil, o estudo feito em (RIBEIRO; FREIRIA, 2018) também sugere como estratégia de controle da doença, o não compartilhamento de equipamentos equestres e a realização de exames sorológicos para monitoramento do rebanho. O controle da doença também é enfatizado por (GOMES et al, 2018), que constata que cavalos soropositivos podem ter um desempenho até 40% menor que um cavalo saudável. Esse desempenho menor é o motivo de haver a troca de cavalos durante o dia de trabalho.…”