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Johanna Karlsson
Doctor of agronomy with a thesis on more efficient and sustainable milk production with feeding of by-products and forage to dairy cows.
Presentation
Interest areas: sustainability, technology and dairy cows.
Research
Mjölk på gräs och biprodukter (Milk on grass and by-products)
Mer grovfoder till grovfodereffektiva kor - bra för korna och miljön! (More forage to forage efficient cows - good for the cows and the environment!)
Hitta de grovfodereffektiva korna och öka lönsamheten (Find the forage efficient cows and increase profitablity)
Experiments:
Change-over study with high forage diets and by-product based concentrate Replacing human-edible feed ingredients with by-products increases net food production efficiency in dairy cows
Glycerol's effect on methane production in dairy cows Effects of replacing wheat starch with glycerol on methane emissions, milk production, and feed efficiency in dairy cows fed grass silage-based diets
High forage diets to 100 cows in early lactation
Forage efficient dairy cows - full lactation study
Background
Agronomist in Animal Science since 2009.
System tester and test leader of VMS on DeLaval International AB between 2010 and 2015.
PhD student at the Department of animal nutrition and management 2015-2020.
Supervision
Filippa Larsson, master thesis "Individuella skillnader i grovfoderintag hos mjölkkor – Sambandet mellan grovfoderintag och djuregenskaper" (Individual differences in forage consumption in dairy cows - correlations between forage intake and animal traits)
Matilda Johansson, master thesis "Kraftfoder baserat på spannmål eller betfiber i fullfodersystem till svenska mjölkkor : effekter på mjölkavkastning, foderkonsumtion och resursutnyttjande". (Concentrate based on cereal grain or sugar beet pulp in TMR to Swedish dairy cows: effects on milk yield, feed consumption and efficiency)
Selected publications
J. Karlsson, R. Spörndly, M. Lindberg and K. Holtenius. 2018. Replacing human-edible feed ingredients with by-products increases net food production efficiency in dairy cows. Journal of Dairy Science. 101 (8): 7146-7155. https://www.sciencedirect.com/science/article/pii/S0022030218304387
J. Karlsson, M. Ramin, M. Kass, M. Lindberg, and K. Holtenius. Effects of replacing wheat starch with glycerol on methane emissions, milk production, and feed efficiency in dairy cows fed grass silage-based diets. Journal of Dairy Science. 102 (9): 7927-7935. https://www.sciencedirect.com/science/article/pii/S0022030219305466