Browsing Animal Science by Title

Reducing Feed Costs While Maintaining Milk and Milk Component Production

Chase, L.E. (2020-10)

Refinement of an In Vitro Assay to Evaluate Intestinal Protein Digestability in Ruminants

Ross, D.A.; Gutierrez-Botero, M.; Van Amburgh, M.E. (2013-10-22)

Relationships between Starch and Physically Effective and Undegraded Fiber in Lactating Dairy Cows

Smith, K.M.; Grant, R.J.; Obata, A. (2020-10)

Typical rations without supplemental sugars contain about 1.5 to 3% sugar. Adding more dietary sugar often reduces rumen ammonia, suggesting that rapidly digestible sugars help the rumen microbes capture and use nitrogen. ...

Relationships Between Transition Cow Nutrition and Management Strategies and Outcomes in Large Dairy Herds in the Northeastern US

Kerwin, A.L.; Burhans, W.S.; Nydam, D.V.; Overton, T.R. (2021-10-19)

Given an increase in nutrient requirements for milk production, decrease in DMI, parturition, management factors such as frequent pen moves, and diet changes, the transition period is arguably the most demanding time in a ...

Relationships Between Undigested and Physically Effective Fiber in Lactating Dairy Cows

Grant, R. J.; Smith, W. A.; Miller, M. D.; Ishida, K.; Obata, A. (2018-10-16)

As we learn more about rumen fiber digestion pools, we must also focus on the proper physically effective fiber content that optimizes dry matter intake and productive response. For some diet types at least, the proper ...

Research Update: Energy Strategies for Dry Cows

Mann, S.; Leal Yepes, F.A.; Overton, T.R.; Wakshlag, J.J.; Ryan, C.M.; Nydam, D.V. (2014-10-21)

Research Update: Formulating Diets for Lactating Cattle Using Multiple Pools of NDF Digestibility

Zontini, A.; Foskolos, A.; Ross, D.A.; Metcalf, J.; Doane, P.H.; Van Amburgh, M.E. (2015-10-19)

Review of Hydroxy Trace Minerals in Dairy Cattle

Yasui, T.; Ryan, C.M.; Gilbert, R.O.; Perryman, K.E.; Overton, T.R. (2013-10-22)

Role of 16- and 18-Carbon Fatty Acids in Dairy Rations

Lock, A.L.; deSouza, J. (2015-10-19)

The Role of Energy Balance and Metabolism on Reproduction of Dairy Cows

Butler, W.R. (2012-10-17)

Ron Butler’s Range of Scientific Inquiry

Lucy, M. C. (2018-10-16)

Dr. Butler capitalized on one of the most exciting eras of science by applying new technology to research questions to fuel scientific discovery.

Ron’s Impact on the World Dairy Industry

Britt, J. H. (2018-10-16)

Modern dairy farmers have benefited greatly from Ron Butler's research on energy balance during the transition period and on effects of high blood urea nitrogen of fertility. Nutritionists, veterinarians, Extension educators ...

Ruminal Acidosis: Beyond pH and Rumen

Lean, I. J.; Golder, H. M. (2019-10-22)

Ruminant Farm Systems Model: Development Progress and Applications

Reed, K.F. (2021-10-19)

The Ruminant Farm Systems (RuFaS) model is a whole farm simulation model that tracks nutrient flows, transformations, losses, and exports from the herd, manure, fields, and feeds. In this update, progress is reviewed and ...

SAS Code for Technical note: Comparison among three methods for evaluating clinical mastitis frequency in dairy cows: cow-level risk, cow-level rate, and quarter–level rate

Alanis, Valeria M.; Tomazi, Tiago; Santisteban, Carlos; Nydam, Daryl V.; Ospina, Paula A. (2020-11-06)

The lack of standardization in reporting clinical mastitis incidence limits the ability to compare results across multiple studies without additional calculations. There is both a biological and statistical rationale for ...