Effects of drought and wet and growth periods on production and consumption of Hammada salicornica species (case study: Changooleh, Mehran, Iran)

Each species during the grazing season and in different years has specified production.livestock in any point of grazing season and in different years had Consumes a certain amount of forage That according of conditions and varies races are different.In order to investigate the growth characteristics and production and forage consumption in different stages of vegetative by livestock This project was carried out in Rangeland Changouleh at five-year.Therefore, in early growing season the production of forage species inside enclosed components and residual forage in fields grazed by livestock, harvested at intervals of one month.And the difference between them, the amount of consump for each species was determined.This action continued until the livestock departure from rangeland. Finally, in order to study the effect of year and month of harvest on production and consumption of species under consideration in the study area, the data were obtained and analyzed.growth of species Hammada salicornica was in most years in April and production of it between 14 to 51 kg per hectare, which consume between 6 and 12 kg.finally these species has 9.7 percent relative production and 5.1 percent relative consumption in rangeland.Analysis of variance showed that year has a significant effect on the production and consumption