The definition of acidosis in dairy herds predominantly fed on pasture and concentrates.

摘要: Abstract This cross-sectional survey examined the prevalence of ruminal acidosis and effects on production dairy cattle. Eight fresh cows, 3 primiparous 5 multiparous ( M ), 100.74±23.22, 94.79±18.13, 62.81±15.65; mean ammonia concentration (m 2.46±2.02, 7.79±3.75, 3.64±2.03; d-lactate 0.34±0.86, 0.28±0.97, 0.12±0.51. Category 1 cows had higher propionate, valerate, isovalerate, caproate concentrations were lower parity than in other categories. Cows category milk but fat content 2 cows. Herds assigned to groups according numbers each category. with ≥3 8 classified as acidotic. having suboptimal rumen function, herds normal. that or more (acidotic herds) diets energy nonfiber carbohydrate contents a neutral detergent fiber high The lack significance herd effect statistical models developed suggests categories robust across systems, which varied from all pasture total mixed rations. A point 10% (95% credible interval, 12%) an acidotic profile indicates risk for cattle sampled. there may be opportunities reduce by dietary manipulation.