بررسی تعیین ارزش غذایی کاه کمپوست باقیمانده از تولید قارچ خوراکی (آگاریکوس) در تغذیه دام

Spent compost wheat straw is an available by-product, remained from edible mushroom production, which is constitutes a potential pollutant and cost effective for disposal. This experiment was conducted to determine the nutritive value of spent wheat straw compost from Agaricus bisporus mushroom as ruminant feed. Spent compost was provided from a mushroom farm and the casing soil was removed from the whole compost. The spent straw was sun dried and sampled for chemical analysis. A pre test was carried out to determine the possibility free choice intake of the straw, using of 8 mature male sheep for 7 days. Then the main trial was conducted, in which four wheat straw based diets including; control (I), 10% spent straw (II), 20% spent straw (Ill) and 30% spent straw (IV) were tested in sheep. The diets were formulated to provide the maintenace requirements and fed to 8 sheep for 56 days experiment in a latin square based design (change over) in 4 periods of time. Dry matter intake (DMI), organic matter intake (OMI). digestible dry matter intake (DDMI) I digestible organic matter intake (DOMI). digestibility of dry matter (DMD), organic matter (OMD), crude protein (CPD), crude fiber (CFD), acid detergent fiber (ADFD), neutral detergent fiber (NDFD) and nitrogen balance were determined. Data obtained from the pre-test indicated that the spent wheat straw could not be accepted by sheep as a sale feed. The DMI were 74.0, 73.8, 70.2 and 57.1; aMI 62. 7, 63.4, 58.0 and 44.4 g per kg ofWBo.75 for the diets I, II, III and IV respectively which were significantly (P