However, greater hay levels in the ration were associated with lower weight gain.
Dacron bags containing the CON total mixed ration were inserted on d 11 at 0 h and were removed at 6, 12, 24, and 36 h after insertion.
Physiologically, plasma cortisol levels were elevated in soles at high density (45-fold higher than at 7 kg m−2) whereas no differences associated to the feeding ration were observed.
The effects of monensin premix supplementation on ruminal pH characteristics and forage degradability, and total tract diet digestibility during grain-induced subacute ruminal acidosis (SARA) in lactating dairy cows receiving a total mixed ration were investigated.
Ingredients of the ration were offered separately to the cows; dietary hay and low-level concentrate were offered twice daily at 0800 and 1600 h, whereas concentrate of the high-level treatment was offered in 4 meals a day at 0800, 1200, 1600, and 1900 h.
The effects of monensin, administered either as a controlled release capsule (CRC) or a premix, on attenuating grain-induced subacute ruminal acidosis (SARA) and on ruminal fermentation characteristics in Holstein cows receiving a total mixed ration were investigated in two experiments.
