Animal health

By Dr. Jenn Rowntree
Recently, a herd of cows in Dane County, Wisconsin recently tested positive for bovine tuberculosis (TB) and has been quarantined.  The herd will continue to be under quarantine while the Wisconsin Department of Agriculture, Trade and Consumer Protection (WI DATCP) traces all cattle that have entered and exited the herd in the last five years.  This event provides a great opportunity to reiterate how important it is to practice proper biosecurity protocols.

By Barry Visser
Dairy cattle behavior and appearance often make it easy to detect external parasites like flies, mange and lice. Severe internal parasite infiltrations can result in roughness of hair coat, anemia, edema and diarrhea. However, the subclinical impact of internal parasites is largely hidden, yet costly. According to a recent study at Iowa State University, undetected subclinical disease caused by internal parasites can cost $190 per animal.

By Cody Yanzick and Ann Hoskins
Calves are naturally herd animals, but, on many farms, the transition period is the first time they are grouped with others, bringing about a set of challenges that need specialized attention.  Limiting stress on calves can offer some of the greatest paybacks in terms of health and performance.

More than 175 calf raisers, Vita Plus consultants and industry peers came together June 20 and 21 for Vita Plus Calf Summit 2018 in Green Bay, Wisconsin.  Follow the links in this post to access full event coverage, including speakers' PowerPoint presentations, articles and more.

By Ann Hoskins
Many calves show subtle signs of sickness before it becomes clinical. The “look, listen, smell and feel” strategy will help you identify those calves much earlier and can be used in all calf-raising systems. The key is to closely observe calves in the moment without making assumptions or overlooking small signs.

By Dr. Mat Faulkner
In the past, we balanced micronutrients using the “holiday pie theory” – if some is good, more is better. 

But that isn’t the case anymore.  In fact, overfeeding micronutrients can not only be costly to the producer, but it can also be deadly to the animal.

More than 330 dairy producers, Vita Plus consultants and industry peers came together December 6 and 7 for Vita Plus Dairy Summit 2017 in Madison, Wisconsin.  Follow the links in this post to access full event coverage, including speakers' PowerPoint presentations, articles, videos and more.

By Dr. Zach Sawall
In early lactation, cows enter negative energy balance.  This comes from increased energy demands for milk production, which can’t be met from dry matter (DM) intake.  If cows can’t adjust to this negative energy balance, excess body reserves are mobilized, leading to higher counts of nonesterified fatty acids (NEFA) and ketones, specifically beta-hydroxy butyrate (BHBA).

By Stacy Nichols
A fresh cow pen should provide cows with a clean, comfortable environment to recover from calving and minimize the social stress they experience when being moved into new groups.  The primary goal of a fresh group must be to minimize health events to allow cows to reach their production potential.

By Dr. Andy Kniesly
Reproductive performance on dairies is one of many key areas that can have a huge impact on profitability. It is no surprise dairy farmers continue to look for ways to improve reproduction programs.

By Dr. Mat Faulkner
One of the amazing things about ruminant animals is their ability to turn feedstuffs with little or no nutritional value into nutritional products.  Ruminants accomplish this through a mixture of rumen microorganisms that convert feedstuffs into energy and protein sources to be used by the host animal.

Essentially, when you feed the cow, you are really feeding the rumen microorganisms.  What you feed them will affect the balance of these organisms and, subsequently, the function of the rumen.

By Dr. Noah Litherland
Maintaining nutrient intake balance and respiratory health can be a challenge during the first quarter of the calendar year.  Increased ambient temperature during the day, increased humidity, and cooler nights have clear impacts on heifer intake and health.

By Stacy Nichols
A shift in the metabolism of dietary oils in the rumen is now recognized as the major cause of milk fat depression.  The cause of this shift is related to two main factors: the amount of vegetable oil in the diet and rumen pH.

By Dr. Noah Litherland, Vita Plus dairy youngstock technical specialist
Fresh air is something we sometimes take for granted out in the country.  We give considerable thought and effort to making sure our milk replacer program is right or our pasteurizer is working correctly, but perhaps we should think more about the quality of air in our calf and heifer facilities. 

By Dr. Zach Sawall
A persistent concern on many dairy farms is the rising copper concentration levels in cattle liver samples. According to Dr. Jeremy Schefers, University of Minnesota Veterinary Diagnostic Laboratory, the concern stems from the common usage of copper sulfate in footbaths to control digital dermatitis and the subsequent higher copper concentrations in manure and on cropland.

By Stacy Nichols
With the current low margins, more emphasis needs to be placed on the factors that impact dairy farm profitability.   Dairies should milk as many profitable cows as possible to maximize the milking parlor – without exceeding the capacity to take care of cows.