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Use of Exogenous Fibrolytic Enzymes to Improve Feed Utilization by Ruminants
- K. Beauchemin, D. Colombatto, D. Morgavi, W. Yang
- Chemistry
- 1 February 2003
Research has demonstrated that supplementing dairy cow and feedlot cattle diets with fiberdegrading enzymes has significant potential to improve feed utilization and animal performance. Ruminant feed…
A review of plant-derived essential oils in ruminant nutrition and production
- C. Benchaar, S. Calsamiglia, K. Beauchemin
- Biology
- 14 August 2008
Effects of an enzyme feed additive on extent of digestion and milk production of lactating dairy cows.
- W. Yang, K. Beauchemin, L. Rode
- Biology, MedicineJournal of Dairy Science
- 1 February 1999
The results demonstrated the benefits of using a fibrolytic enzyme additive to enhance feed digestion and milk production by dairy cows.
Effect of concentrate level and feeding management on chewing activities, saliva production, and ruminal pH of lactating dairy cows.
- M. Maekawa, K. Beauchemin, D. Christensen
- Biology, MedicineJournal of Dairy Science
- 1 May 2002
Results indicated increased chewing time did not increase total daily saliva secretion because increased eating and ruminating saliva was associated with decreased resting saliva, and feeding SI increased the risk of acidosis, because cows ate a higher proportion of concentrate than intended.
Effects of grain processing, forage to concentrate ratio, and forage particle size on rumen pH and digestion by dairy cows.
- W. Yang, K. Beauchemin, L. Rode
- Chemistry, MedicineJournal of Dairy Science
- 1 October 2001
In this study, extent of grain processing and intake of ruminal available starch were the most influential factors affecting milk production and reducing the ratio of F:C improved total digestion and actual milk production.
Severity of ruminal acidosis in primiparous holstein cows during the periparturient period.
- G. Penner, K. Beauchemin, T. Mutsvangwa
- Biology, MedicineJournal of Dairy Science
- 2007
It is concluded that, under the conditions imposed, feeding additional concentrate prepartum does not reduce postpartum RA, and the incidence and severity of RA increases immediately post partum, emphasizing the need to develop and implement feeding strategies that reduce this risk.
A comparison of methods of adding fibrolytic enzymes to lactating cow diets.
- W. Yang, K. Beauchemin, L. Rode
- Biology, MedicineJournal of Dairy Science
- 1 November 2000
The results indicate that fibrolytic enzymes have the potential to increase digestibility and milk production in dairy cows because digestion is low relative to potential Digestibility and when digestion is higher, as was observed in lambs or in vitro, no improvement in digestibility occurs.
Frequency of feed delivery affects the behavior of lactating dairy cows.
- T. DeVries, M. V. von Keyserlingk, K. Beauchemin
- Biology, MedicineJournal of Dairy Science
- 1 October 2005
The results indicate that frequent delivery of feed improves access to feed for all cows, particularly during peak feeding periods when fresh feed is provided, and reduces the amount of feed sorting.
Effects of forage particle size and grain fermentability in midlactation cows. II. Ruminal pH and chewing activity.
- K. M. Krause, D. Combs, K. Beauchemin
- Biology, MedicineJournal of Dairy Science
- 1 August 2002
DMI of particles retained on a screen equivalent in size to the top screen of the Penn State particle separator was the intake parameter explaining most of the variation in mean ruminal pH and was correlated to time spent ruminating and chewing, but not to intake or chewing variables.
Methane emissions from dairy cows measured using the sulfur hexafluoride (SF6) tracer and chamber techniques.
- C. Grainger, T. Clarke, R. Eckard
- Chemistry, MedicineJournal of Dairy Science
- 1 June 2007
The SF6 tracer technique is reasonably accurate for inventory purposes and for evaluating the effects of mitigation strategies on CH4 emissions, and was higher for the SF6 technique than for the chamber technique.
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