03132naa a2200253 a 450000100080000000500110000800800410001910000180006024500950007826000090017352023260018265300160250865300190252465300120254365300220255570000200257770000200259770000200261770000230263770000180266070000170267870000220269577301610271711264702017-08-07       2017    bl uuuu     u00u1 u    #d1 aFAVARO, V. R.  aBeef cattle performance in pastures of rye or double purpose wheat.h[electronic resource]  c2017  aIn southern Brazil, one of the main limitations of livestock activity is the shortage of forage between autumn and early winter. Rye (Cecale cereale) is strategic specie for the autumn and winter cultivation, because of its precocity. It stands out for its rusticity and ability to adapt to poor soils, especially the sandy ones. The double purpose wheat (Triticum aestivum) can be used as forage because it presents high dry matter production, tolerance grazing or cutting and high grain yield under grazing. Considering the variability of available materials, the evaluation of the different species is fundamental to the exploration of the potentialities of each one of them. The objective of this work was to verify if there are differences in animal performance in pastures formed by rye (cultivar Temprano) and double purpose wheat (cultivar Tarum??), under rotational grazing. Each species was implanted in an area of 2 ha, subdivided into four paddocks. It was evaluated available dry matter before animals input, residual dry matter after animals output to calculate total dry matter (DM) production. Sixteen crossbred steers were used for performance evaluation (mean live-weight: 177 kg; aged approximately 5 months on Day 0). The forage offer was regulated by ?put and take? system and the tester animals were maintained in the plots for the entire period of experiment. The experimental design was completely randomized and the data analyzed by the statistical program R with significance level of 5%. It was realized three grazing periods for rye and wheat. The total forage production was similar between treatments on average 5487.4 kg of DM ha-1 (P&gt0.05). Animal performancewas also similar among treatments, the average daily gain was 0.89 kg animal-1. However double-purpose wheat supported higher stocking rate (2.9 AU ha-1; P&lt0.05) totalizing a live weight gain per hectare of 275 kg in 70 days. Rye cultivation allowed a mean stocking rate of 2.6 AU ha-1 totaling a live weight gain per hectare of 264.5 kg in 70 days. In this study the use of double purpose wheat provided greater gain per area when used exclusively for grazing. The evaluation ofthe various species available for cultivation during autumn-winter supports the diversification and economy of rural properties in southern Brazil.  aanimal gain  aCecale cereale  agrazing  aTriticum aestivum1 aC??RDOVA, U. A.1 aPINTO, M. G. L.1 aFLARESSO, J. A.1 aSTRADIOTO NETO, J.1 aWERNER, S. S.1 aRECH, ??. F.1 aBALDISSERA, T. C.  tIn: REUNI??O ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 54., 2017, Foz do Igua??u. Resumos... Bras??lia, DF: Sociedade Brasileira de Zootecnia - SBZ, 2017.