تعيين ارزش غذايي پنج گونه غالب از گياهان شورپسند مناطق كويري استان خراسان

Vegetation cover of arid and desert areas are mainly formed from halophyte plant species. These species are important in terms of feed resources for domestic animals such as sheep, goat and camel in desert areas and also for soil conservation. Because of there is not available information about nutritive value of these annual species, an experiment was conducted to determine the nutritive value of five annual halophyte species including Gamantus gamacarpus, Petrosimonia gluaca, Salsoia crassa. Haiotis occulta and Halocaris sulpharea. Chemical composition, digestibility {by in-vivo method, pepsin- serolas), preference value (by cafeteria fashion) and voluntary intake were measured by using some Baluchi male sheep. Dry matter digestibiliy, digestibility of organic matter and digestibility of organic matter in dry matter were statistically different among treatments (p<0.05) and H. su, H. oc and P. gl showed higher digestibility relative to the other species. The amount of crude protein, fat and crude fiber of species were between 6 to 11.6, 4.2 to 6.8 and 8.5 to 20.4 percent, respectively. The voluntary intake of animals were different, so that the highest daily consumption of animal was 362 gram from H.su and the lowest was 215 gram from H.oc. The preference value of H.oc with 18.09 percent was significantly (p<0.05) lower than the other species.