Comparison of Holstein-Friesian and Norwegian Red dairy cattle for estrus length and estrous signs

Autor: Sveberg, G., Rogers, G.W., Cooper, J., Refsdal, A.O., Erhard, H.W., Kommisrud, E., Buckley, F., Waldmann, A., Ropstad, E.
Zdroj: In Journal of Dairy Science April 2015 98(4):2450-2461
Databáze: ScienceDirect