Effects of inclusion of neutral detergent soluble fiber sources in diets of Holstein cows on feed intake, energy balance, digestibility and feeding behavior during the transition period

Document Type : Research Paper

Authors

1 Ph.D. student, Department of Animal Science, Faculty of Agricultural Sciences, Isfahan University of Technology, Iran

2 Associate professor in the Department of Animal Science, Faculty of Agricultural Sciences, Isfahan University of Technology, Iran

3 Professor in the Department of Animal Science, Faculty of Agricultural Sciences, Isfahan University of Technology, Iran

4 Graduated M. Sc. student, Department of Animal Science, Faculty of Agricultural Sciences, Isfahan University of Technology, Iran

Abstract

This study examined the effect of replacing dietary beet pulp with (BP) with barley in the diet of lactating cows on energy balance, feed intake, digestibility and feeding behavior during the transition period. 24 multi-parity Holstein cows, within 28 d relative to parturition up to day 24 of lactation were tested. Cows were assigned randomly to three dietary treatments containing before and after calving, respectively, were as follows: 1) Control (100% barley), 2) 75% barley +25% BP, and 3) 50% barley + 50% BP. During the pre and postpartum period, daily feed intake and energy intake was highest in 25% BP treatment (P < 0.0001). Dry matter intake as percentage of BW was highest in 50 and 25% beet pulp (P < 0.0001) before and after calving, respectively. Apparent digestibility of nutrients were not significantly different between treatments before and after calving. In postpartum, ruminal pH was lowest in cows fed control diets (P > 0.05). Before calving, cows sorted in favor of large particles (>19.0 mm) (P < 0.05) and against of short particles (>1.18 mm) (P < 0.01) when fed diets without BP (Control). Our results indicate that replacing 25% barley with BP in diets of transition cows improved performance and rumen health.

Keywords


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