milk traits
-
Diagnosis of the bovine leukaemia virus infection in Polish Holstein-Friesian cows and comparison of their milk productivity
Małgorzata Szewczuk, Sławomir Zych, Sylwia Katafiasz
2012, Vol. 81, Issue 4, pp. 353-358
Małgorzata Szewczuk, Sławomir Zych, Sylwia Katafiasz