تعيين ارزش غذايي ضايعات بوجاري بذر چغندرقند و استفاده از آن در جيره بره هاي نر پرواري نژاد شال

Study of nutritive value of sugarbeet seed waste (SBSW) and itʹs utilization on fattening Chal male lambs

The nutritive value of sugarbeet seed (Beta vulgaris) wastes (SBSW) was determined and utilized on fattening Chal male lambs. The proximate chemical analysis of SBSW for crude protein, crude fibre, ether extract were 14.3. 32.5 and 1.3 percent based on dry matter respectively. In vivo and in vitro digestibility for DM and OM were 40.7 and 54.2, 47.5 and 46.7 percent respectively. Rumen degradability of SBSW measured by the nylon bag and gas production technique (GP).DM and OM disappearance were subjected to the equation of Macdonald and Orscov. The 24 hour GP values used to calculate OMD and ME. The nylon bag results were shown to be low. The mean value of GPT for total gas volume and fermentation potential were 10.8 ml/24h for 200 mg DM and 13.3%. The values of OMD and ME calculated from data gas volumes which were 414 gr/kg DM and 914 kcal/kg DM. TDN and DE values by in vivo have been measured for (SBSW), that were respectively 37% and 721 kcal/kg DM. Thrity six 6-7 month age Chal male lambs with the average body weight 29.5 (2.4) kg were used. SBSW was utilized on fattening lambs diet.A 100-d experiment lambs was conducted to use the dietary inclusions of 0, 8, 16 and 32% (SBSW) on lambs rations. A randomized complete block design with three weight groups (block) and four treatment was employed. At the end of experiment total lambs were slaughtered .The results showed that average daily gain, carcass weight, fat and tail fat weight were not affected by treatments. It was concluded that substitution of (SBSW) up to 32% by alfalfa hay in diet of lambs reduced the cost of fattening.