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Comparison of service period and lactation milk yields in dairy cows with single- and twin-calving / Upoređivanje dužine servis perioda i proizvodnje mleka u laktaciji između krava sa jednim teletom i krava sa blizancima
(Univerzitet u Beogradu - Fakultet veterinarske medicine, Beograd, 2018)
Introduction. Twin-calving occurs in 3 to 5 % of Holstein Friesian cattle, and it is mostly followed by reproductive and economic problems. This evaluation will compare the service period and the milk yield in cows with ...