“…Orsine et al (1989) observed no differences in digestibility when comparing basal diet without buffer additive with supplementation with Lithothamnium calcareum (1000 mg/kg DM or 2000 mg/kg DM) or limestone (1000 mg/ kg DM). Carvalho et al (2016) testing supplementation with limestone (7.1g/kg DM) or calcareous algae (7.4 g/kg DM), with or without addition of monensin (30 ppm) observed that limestone resulted in higher means of ruminal and blood pH, therefore being more efficient in pH control. Comparin et al (2013) testing performance of heifers in pastures consuming 1 kg DM/animal/day of protein-energy supplement and heifers in pastures consuming the same supplement at the amount 0.99 kg DM/animal day + 0.01 kg of Lithothamnium calcareum observed no differences in DMI, ADG, dressing or pH.…”