QUAIS ALTERAÇÕES O USO DA SEGADEIRA CONDICIONADORA PODE PROMOVER NA PRODUÇÃO DO FENO DE AVEIA PRETA 139?

Abstract

The objective of the experiment was to evaluate the efficiency of two types of mowers in cutting Embrapa 139 black oat plants for hay production. The cuts were evaluated with a common mower and with a conditioning mower with free-iron finger beaters, both with 6 cutting disks. The use of these beaters causes injuries to the stem of the plant in order to accelerate the rate of dehydration in the field. The dry matter content of the plants before cutting and during exposure to the sun, until the moment of baling and the time to reach the ideal storage humidity were also evaluated. The experimental design was in randomized blocks with split-plots in time with 5 replications. In the main plots the two cutting systems will be allocated and in the subplots the evaluation times (8, 24, 32, 44, 52, 64, 72, 84 and 92 hours after cutting). All statistical data were analyzed using the SISVAR statistical analysis and experiment planning program, to test the difference in the two treatment means, the F variance analysis was performed, and the mean test used was the Tukey test with a level of significance to 5%. The bromatological analysis of the plants was also carried out before cutting and at the time of baling. Chemical composition analyzes were: dry matter, crude protein, insoluble protein in neutral detergent, insoluble protein in acid detergent, neutral detergent fiber, acid detergent fiber, lignin, cellulose and hemicellulose. And the result obtained was that the use of the conditioner mower reduces the time of the cut forage in the field, causing no loss in its nutritional value, reaching a percentage of dry matter, it was also observed that there was no chemical change between the two methods.