Duodenal flows of protein, essential amino acids in dairy cows

The objective of this analysis was to compare the rumen submodel predictions of four commonly used dairy ration programs to observed values of duodenal flows of crude protein (CP), protein fractions and essential AA. FULL STORY »

The association of serum metabolites in the transition period

The objective was to examine the associations of peripartum concentrations of nonesterified fatty acids (NEFA), ß-hydroxybutyrate (BHBA) and calcium with milk production in early lactation and pregnancy at the first artificial insemination (AI) across different management systems. FULL STORY »

Does dry-period nutrition affect colostrum quality?

To find out, University of Illinois researcher Jim Drackley set out to answer the following questions. FULL STORY »

Value of propionic acid preservatives questioned

When it comes to putting up alfalfa hay, you want to capture plants at peak nutritional value. However, weather can be a problem. FULL STORY »

Effects of a propionic acid-based preservative for alfalfa hays

During 2009 and 2010, alfalfa (Medicago sativa L.) hays from two cuttings harvested from the same field site were used to evaluate the effects of a propionic acid-based preservative on the storage characteristics and nutritive value of hays stored as large round bales. FULL STORY »

Is d-methionine bioavailable to the dairy cow?

Rumen-protected forms of Met contain an equimolar mixture of the d- and l-isomers. FULL STORY »

Good news on the bypass methionine front

Bypass methionine supplements are about a 50:50 mixture of D-methionine and L-methionine. FULL STORY »

Looking behind, looking ahead

Research focusing on the feeding and performance of calves and heifers over the past two decades has impacted the way replacements are raised in the United States. FULL STORY »

Avoiding lameness: Another reason to watch body condition scores

Researchers at Cornell University have found an association between body condition score and lameness, which means it is more important than ever to advise your clients on proper body condition — especially in early lactation. FULL STORY »

Phosphorus supplementation may not be necessary for heifers

The phosphorus requirement of a dairy heifer is 0.20 to 0.35 percent of dry matter intake, depending upon bodyweight. FULL STORY »

Monensin helps with heat stress

Over the years, Lance Baumgard has documented the physiological effects of heat stress on a cow. FULL STORY »

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