The effect of molasses distiller condenses soluble on performance and blood biological metabolite of Holstein fattening calves

This study was conducted to determine the effect of molasses distiller condenses soluble as dietary energy and protein feedstuff on average daily gain (ADG), feed convention rate and blood biological metabolite of Holstein calves. Molasses distiller condenses soluble (MDCS) is a by-product from Alcohol fuels production. This by product is a contaminated matter to environment. It is reasonable to take advantage of the large amounts of MDCS being produced. The MDCS have a substantial value as animal feedstuff by raising the PH and removing its water. This pH adjustment can be achieved by adding sodium hydroxide or ammonia. Total 18 male Holstein calves (118±1. 4 kg) were used in 83 days experiment at Misagh dairy farm in Hamadan province. A completely randomized design was performed with 3 treatments (6 calves in each group). The treatments were 0; 9; 18; percent of MDCS per Kg/DM of total mixed ration replaced with cereal and soy meal. The diets were balanced by using NRC (2001), with regard to animal requirements maintenance and daily gain (1200 g/day). Approximately 10 ml blood was taken from calves by jugular vein-puncture on day 45 and 83 of experiment. Blood samples were centrifuged and aliquot in different fractions and the serum samples analyzed for glucose, creatinine, triglycerides, cholesterol and liver’s enzymes. The results indicated that dry matter intake, live weight gains, feed efficiency and ADG were not significantly different between treatment groups (P>0. 05). The results indicated there were no significant differences in serum metabolites and liverٴs enzymes of calves. The total protean was significantly higher in treated animal at day 45 but not at day 83 when compared with control. It can be concluded that MDCS could be safely used up to %18 as a part of ration in fattening calves without any negative effect on blood biological metabolite and performance.