Fermented soybean meal affects the ruminal fermentation and the abundance of selected bacterial species in Holstein calves: a multilevel analysis

Leila Kaviani Feizi, Sabihe Soleymanian Zad, Seyed Amir Hossein Jalali, Hassan Rafiee, Masoud Boroumand Jazi, Khaled Sadeghi1 & Rasoul Kowsar