The aim of this study was to evaluate the losses that occur in the sugarcane crop during the harvesting, based on the performance of two harvester models operated at different displacement speeds. The variety harvested was CTC4, with total productivity of 95.0 Mg ha-1. The experimental design was completely randomized in a 2 x 3 factorial scheme with five replications. The treatments consisted of two harvester models (John Deere 3520 and John Deere CH570), operated in three different displacement speeds (3.0 km h-1, 4.0 km h-1 and 5.0 km h-1) in sugarcane harvesting. The quality indicators that assessed after sugarcane harvesting were the following loss types: stump cane, whole cane, tip cane, loose piece cane, shrapnel cane and total cane loss in Mg ha-1. The increase in displacement speed resulted in lower total losses in sugarcane harvesting. The 3520 harvester was superior to the CH570 at the highest speed tested. The reduction of sugarcane harvesting loss indexes was proportional to the increase of the displacement speeds for the parameters such as stump cane, whole cane, tip cane, loose piece cane and total loss cane for 3520 harvester and stump cane, whole cane and total loss cane for CH570 harvester, showing strong negative correlations (> 0.85).

We aimed to follow the epidemiologic evolution of bovine digital dermatitis (BDD) and other podal diseases grouped in a dairy farm in Central Brazil between the years 2010 and 2016. This study was carried out in a farm in Jataí, Goiás, Central Brazil, where the prevalence data of bovine digital dermatitis (BDD) and other podal diseases, as well as the composition, history, and management of the herd, was collected. We analyzed the collected data into the two annual pluviometric precipitation values in Central Brazil: rainy season and dry season. The cumulative frequency for comparison of prevalence between seasons throughout the years was calculated from 2011 to 2016. The comparison was carried out by post hoc chi-square test with the Bonferroni correction adopting a level of significance of 5% (p < 0.05). BDD was not diagnosed at the property in 2010; however, the disease became endemic from 2011, which coincides with the arrival of new animals to the herd. The comparison of the accumulated frequencies for prevalence of the diseases in the herd between 2011 and 2016 revealed BDD, as well as the grouped nutritional and metabolic foot diseases, has the highest prevalence in the period of lower annual precipitation in Central Brazil, which occurs between May and October. For a better control of BDD, we recommend greater attention in cattle management in the dry season of the year in Brazil, as well as in any other place in the world in which rainfall is seasonal.

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