Researches Regarding the Exploitation of the Temporary Pastures which are Resistant to Draught in the 2nd Year of Vegetation with Sheep

Abstract

The tests were made on a temporary pasture of perennial grain and vegetable plants with high resistance at draught, founded in 2008 and exploited with sheep of Merinos de Palas breed. There were organized two lots of young female sheep: the 1st lot fed by grazing the A1 mixture and the 2nd lot foddered by grazing the A2 mixture. Both lots received also a supplement of concentrated fodders (barley) of 0.3 kg/animal/day. The production of dry substance obtained in the 2nd year of vegetation reveals the high potential of production of A1 complex mixture, represented by species of perennial grain plants -Lolium perenne 20%, Dactylis glomerata 30%, Festuca pratensis 15%, Festuca arundinacea 20% and perennial vegetable plants -Trifolium repens 10% and Lotus corniculatus 5% from which it was obtained a production of 5 t/ha S.U. (25 t/ha green mass). The consumption of nutritive substances/animal/day presented almost equal values between the 2 lots, a little higher at the 2nd lot where the pasture had a higher value of vegetable plants. The final body weight was of 45.20-46.30 kg, higher with 2.43% at the 1st lot. The daily average increase was of 101 g at the 2nd lot and of 110g at the 1st lot, being superior at the latter, with 8.91 %.