M²-magazine conversation with Paulina Lingers

Paulina Lingers is a veterinarian working with Växa in Sweden. Växa is the largest association of cattle farmers in the country with 200,000 dairy cows registered in their database, Kokontrollen.
She is a project leader and participant in a range of projects including communication and animal health. Her role includes developing new ways for better collaboration within the company’s various departments. M²-magazine asked Paulina about her background and her work.

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Research MSc thesis

Effects of intramammary infections on mammary gland growth and development in nulligravid heifers

Dairy heifers are a sizable financial investment for producers and therefore should enter first lactation healthy in order to yield good return on investment. Most mammary growth and development occur during a dairy heifer’s first gestation and this initial development determines the number of secretory mammary epithelial cells in the lactating gland. The heifer mammary gland prior to first gestation is primarily composed of the mammary fat pad and contains minimal mammary epithelium. With the initiation of pregnancy, this previously existing mammary fat pad is replaced by secretory mammary epithelium. Unfortunately, coupled at this time is the increased prevalence of intramammary infections (IMI) as a result of pathogenic bacteria entering the mammary gland via the teat canal and establishing an infection. Such IMI are expected to shortchange future mammary maturation and ultimately reduce the number and/or functional capacity of secretory mammary epithelial cells. However, how these IMI affect mammary gland growth and development in rapidly growing and developing mammary glands has not been investigated. Therefore, Dr. Pari Baker explored the effects of intramammary infections on mammary gland growth and development in nulligravid heifers.

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Post-milking teat protection

Post-milking teat disinfection, is there still something interesting to write about this topic? It has been widely covered since it has been proven to reduce the incidence of new intramammary infections. Although the state-of-the-art is well-known, we are often surprised by how this step is performed daily on the farm. This article will underline the importance of teat disinfection after milking. The worldwide regulatory positioning will give us some insights on how a teat dip is evaluated during the registration process. We’ll have a close look at the EU biocide directive, the main active substances, and other ingredients such as emollients and film forming agents that can be found in the teat dip/spray formulations in order to prevent mastitis. Finally, because post-milking teat disinfection is not effective if not properly applied on the teats, the principles of a correct application will be reviewed. The terms teat dip/teat dip solution/post-milking teat dip (PMTD) or teat disinfectant products will be used equally as general terms to describe solutions applied on the teats after milking.

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