Potencial forrageiro da jitirana (Merremia aegyptia) para a produção de feno no semiárido nordestino.

Abstract

The hay is a good altemative to the use of jitirana ( Merremia aegyptial.) lince this species forms denso population , has high crude protein content and is quite palatable to animais. The hay should be performed when the planta have the best combination of productivity and nutricional vague. During the dry season the small producer is struggling to feed their herda , given that keep a herd of animais having to buy feed that usually demand very high preces, some producers are required to sell some of his flock . An altemative is the preparation of fodder plant hay during periods of ram and can stock up and store food to ensure that feeding caule during the dry season . This study aimed to evaluate the productivity and the nutritional value of jitirana planas ( Merremia aegyptia L. ) in semi-arid conditions. Fortnight]y samp]es from ]5 to 120 days ater planting were perfomled , analyzing the productivity of both the fresh matter ( kg / ha ) and dry matter ( kg / ha and% ) and crude protein (kg / ha and% ) , calcium (kg / ha %) and phosphorus (kg / ha %). It was observed that with increasing phenological stage , an increase in productivity of both natural materiais ( 1597.93 kg / ha to 15 days to 30470.21 kg/ ha at 120 days) and dry weight( 93.00 kg/ ha to 15 days to 4333.00 kg / ha to 120 days) . The crude protein content decreased with advancing age cut- stabilizing at approximately 17 % CP between 75 and 120 days of age . The phosphorus and calcium leveis remained constant in all periods . Based on crude protein , calcium and phosphorus , haymaking of jitirana can be performed between 1 05 and 1 20 days after planting or early fruiting , the conditions of semi-arid northeastem Brazil.