March 2011

Optimizing Respiratory Health in Calf Barns

As dairy farms grow and expand their milking herd numbers, so does the dairy replacement herd.

With 8 percent of the total number of cows represented by preweaned calves, the number of calves for operations 500 cows and larger can be a minimum of 40 calves on milk at one time. With more calves to feed as the dairy operations grow, time, labor and facilities devoted to the replacement herd also increases.


Ten Strategies to Battle Calf Scours

Sick calves are no fun. At the beginning of July, my research group started a study with sixty newborn bull calves from commercial dairy farms. Our objective was to find combinations of milk replacer and starter grain additives that promote calf performance and health in the absence of medicated milk replacer.


Managing Calf Health Through Nutrition

Calf health, as reflected in morbidity and mortality, is a consistent and major issue facing the dairy farmer. Data from Europe and the U.S. clearly show that dairy calf mortality remains above 5 to 8 percent year after year, representing a significant economic impact on the dairy farm economy.


Colostrum: More than just '4 quarts equals passive transfer'

Ask a student about colostrum, and the response will be passive immunity. That’s correct, but it is only part of the story with respect to the biological activity of


Genetic Defect FAQs - RAAA

This PDF contains questions and answers regarding the RAAA's policies in dealing with genetic defects.


Congenital hypotrichosis with anodontia in cattle: A genetic, clinical and histological analysis


Discovery Zone:

Congenital Hypotrichosis and Partial Anodontia in a Crossbred Beef Calf

Abstract — Clinical examination, skin biopsies, skull radiographs, and DNA analysis of a 2-day-old Red Angus- Charolais-Simmental cross bull calf confirmed the diagnosis of congenital hypotrichosis and anodontia defect (HAD), also called anhidrotic ectodermal dysplasia, which is a rare anomaly caused by a deletion in the bovine EDA gene on the X chromosome............

Discovery Zone:

Avoid Cattle Defects With Mating Decisions

With expected progeny differences and genomic testing, beef cattle breeders can predict calf structure and performance traits.

Researching pedigrees and sire summaries creates a forecast of the future, but one of the most important genetic predictions is often overlooked.

Many beef cattle genetic deformities are now tested for in pedigrees and should be evaluated when making mating decisions. Being aware of potential defects and then breeding based on probabilities can keep herd size growing and herd quality admirable.

New Tests Available for Cattle Genetic Disorders

Genetic defects in cattle have made their way to the forefront again. The changing breeding landscape and intense selection have led to the presence of these defects.

Although not a new problem, genetic defects have been seen as far back as the 50s in some breeds. Recently, however, they’ve become more prevalent than producers and breed associations would like.

Treatment for Ringworm


My calves always seem to get ringworm. What is the best treatment and can
I eradicate it from my herd?

Discovery Zone:


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