Research Nuggets

Oral calcium bolus supplementation on early-lactation health

The objective of this study was to evaluate the effect of supplementation with oral Ca boluses after calving on early-lactation health and milk yield. FULL STORY »

Cow and herd variation in milk urea nitrogen concentrations

Milk urea nitrogen (MUN) is correlated with N balance, N intake, and dietary N content, and thus is a good indicator of proper feeding management with respect to protein. FULL STORY »

Extra trace minerals may pay big dividends for early-lactation co

Hypocalcemia, immunosuppresson, negative energy balance ― they’re all part of the early-lactation experience. But what about trace mineral deficiency? Do early-lactation cows experience this problem, as well? FULL STORY »

A potential cost-savings

When profit margins get tight, it’s not uncommon for dairy operations to look for opportunities to cut costs. FULL STORY »

What causes heifer weights to be so variable?

Canadian researchers took a look at just how variable heifer growth rates are between farms. FULL STORY »

Yeast-derived protein as a substitute for soybean meal

Everyone knows about the high cost of soybean meal. FULL STORY »

The power of meta-analysis

In the January 1998 issue of Dairy Herd Management, an initial effort was made to show the positive benefit of yeast culture on milk production. FULL STORY »

Soybean meal substitution with a yeast-derived microbial protein

The objective of this study was to examine the effects substituting soybean meal with a yeast-derived microbial protein on rumen and blood metabolites, dry matter intake and milk production of high-producing dairy cows. FULL STORY »

Meta-analysis of the effects of feeding yeast culture

The purpose of this study was to use meta-analytic methods to estimate the effect of a commercially available yeast culture product on milk production and other production measures in lactating dairy cows using a meta-analysis of randomized controlled trials. FULL STORY »

Hot topic: Organic matter digestibility and how to measure it

New lab techniques are making it easier (and more accurate) to predict ration quality and dairy cow performance. FULL STORY »

Pasteurized waste milk and gut bacteria

While research has documented conclusively that pasteurizing waste milk significantly reduces bacterial levels in the liquid calf feed source, USDA researchers have taken an interesting look at how the feeding practice affects long-term gut flora in the animals. FULL STORY »

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