EFFECT OF CONCENTRATE LEVEL AND THE LENGTH OF FATTENING ON THE GROWTH, FEED INTAKE AND FEED CONVERSION EFFICIENCY OF PESISIR COWS

Abstract

A study was done to examine the effects of concentrate level and the length of fattening on the daily weight gain (DWG), feed intake and feed conversion efficiency of Pesisir Cows. Twelve cows between 2 and 2.5 years old with live weights of 126 to 170 kg were used. The study used a randomized block design in factorial arrangement with two factors. The first factor was concentrate level (CL) with either 50 % concentrate and 50 % of ammoniated rice straw or 75 % concentrate and 25 % ammoniated rice straw (defined as A1 and A2, respectively). The second factor was the duration of fattening, either 3 or 4 months (B1 and B2, respectively). There were significant effects of CL on DWG (P<0.05), no significant (P>0.05) effect of LF on DWG and no CL X LF interaction on DWG. There were no significant (P>0.05) effects of CL on DMI but LF significantly affected (P<0.05) on DMI. There were no interaction effects of CL and LF on DMI. CL significantly (P<0.05) decreased FCR while LF did not significantly affect FCR. There were no significant effects of interaction between CL and LF on FCR