The effect of Resistant Starch and pistachio hull phenolic extract feeding on feed intake, performance, Hematological and blood parameters of suckling Holstein calf

The present study was performed to determine the effect of resistant starch as a type of prebiotic and phenolic compound extract on performance, hematological and blood parameters of suckling Holstein calf. For this, 54 suckling Holstein calves (27 male and 27 female) were randomly assigned in 9 treatments including: RS1 (8 g resistant starch), RS2 (16 g resistant starch), PE1 (1800 mg phenolic compounds), PE2 (3600 mg phenolic compounds), RS1+PE1 (8 g resistant starch+1800 mg phenolic compounds), RS1+PE2 (8 g resistant starch+3600 mg phenolic compounds), RS2+PE1 (16 g resistant starch+1800 mg phenolic compounds), RS2+PE2 (16 g resistant starch+3600 mg phenolic compounds) in a completely randomized factorial design with 9 treatments and 6 replications. The weight gain, feed intake and feed conversion ratio of calves, hematological and blood parameters were measured. The results showed that weight gain didn’t affected by experimental treatments and feeding of resistant starch and phenolic extracts had no effect on daily weight gain, daily feed intake and feed conversion ratio of Holstein calves. The hematological and metabolic parameters did not affected by experimental treatments. But the effect of period on blood glucose, triglyceride, cholesterol and total protein was significant.