Effect of feeding a negative DCAD diet prepartum

Historically, negative dietary cation-anion difference (DCAD) diets have been fed for 2 to 3 weeks prepartum to reduce the incidence of clinical milk fever. Limited information is available on the effect of feeding a negative DCAD for extended time, this trial looks at feeding such a diet for 3, 4, or 6 weeks prepartum. FULL STORY »

Effects of dairy slurry on alfalfa silage fermentation

Dairy producers frequently ask questions about the risks associated with applying dairy slurry to growing alfalfa. The objectives of this study were to determine the effects of applying dairy slurry on nutritive value and fermentation characteristics of alfalfa balage. FULL STORY »

Late gestation heat stress impacts calves, too

Calves born to cows exposed to heat stress and fed their dams’ colostrum have compromised passive immunity. It is unknown if this compromised immune response is caused by effects of heat stress to the calf in utero or factors of heat stress effecting colostrum. FULL STORY »

Effect of pomegranate-residue supplement in neonatal calves

Cryptosporidium parvum is considered one of the most common enteropathogens, responsible for the high incidence of diarrhea and deleterious implications on immunity and health in neonatal calves. FULL STORY »

No adverse effects of GE feeds in livestock diets

An article published in the peer-reviewed Journal of Animal Science concludes feeding livestock diets that contain genetically engineered (GE) crops has no impact on the health or productivity of those animals. FULL STORY »

Statistical filtering improves feed composition database accuracy

Dairy ration formulation models assume the nutrient composition of individual ingredients is known with certainty, and that the dietary concentration of a nutrient equals the weighted average of the nutrients provided by each ingredient. Both assumptions are invalid to varying degrees. FULL STORY »

Corn bran vs. corn grain at two forage levels

The objective of this study was to determine the effect of substituting corn bran (CB) for dried ground corn grain (CG) in the nonforage portion of high-forage (HF) and low-forage (LF) diets. Twelve multiparous and 12 primiparous Holsteins were assigned to four diets. The effects of these treatments on performance, intake, and apparent total-tract digestibility of the diets were evaluated. FULL STORY »

Low-starch, low-forage diets can support normal rumen function

Many factors, including ethanol production, have led to lower starch rations using more non-forage fiber sources. We know that lower starch does not generally lead to problems in the rumen, but the combination of low starch and lower forage has been relatively unexplored. This trial looked at the effect of feeding a lower-starch diet with different amounts of forage. FULL STORY »

Effects of PMRs on rumen and milk production

With the increase of robot milking systems, this study may lend some insight as to feeding strategies that may be most effective for stabilizing rumen environment. FULL STORY »

Viseral fat concentration not captured through BCS

Relatively little is known about changes in mass or function of internal fat deposits in dairy cows, particularly during the periparturient period. FULL STORY »

Accurate tools for cow-side measurement of BHBA concentrations

Hyperketonemia is defined as an abnormally high concentration of circulating ketone and is an indicator of excessive negative energy balance in transition dairy cows. The gold standard for diagnosing hyperketonemia is the measurement of BHBA in serum or plasma. Implementing a hyperketonemia surveillance program using DHI monthly milk test data could be a practical approach. FULL STORY »

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