This study was conducted to evaluate the starchy feed effect (the wheat flour and the wheat starches grade1 and 2) on alfalfa hay digestibility using
in vivo and
in vitro methods. The
in vivo experiment was achieved with 4 ruminally fistulated Makui sheep (BW, 43.20±1.2 kg) in a completely randomized design with a change over arrangement and the
in vitro Telly and Terry experiment was conducted in a completely randomized design. In either experiment the DM and OM digestibility for mixed (starchy) rations was significantly higher than those of basal (alfalfa hay) ration, but the NDF digestibility of basal ration was higher than that of mixed ration. The rumen pH for alfalfa was the
highest, and the lowest pH was obtained with the
starch grade1 containing diet. The highest and the lowest correlation of regression equations were related to in vivo DM digestibility and the experimental mixed rations NDF digestibility, respectively. Results of this study showed that the starch grade 1 containing diet had a highest negative effect on the alfalfa hay fibre digestibility. Moreover, the regression equations may encompass better prediction of DM digestibility of mixed rations than that of the fibre digestibility.
Type of Study:
Research |
Subject:
Special Received: 2014/02/9 | Revised: 2019/02/27 | Accepted: 2014/02/9 | Published: 2014/02/9