Ruminal pH in dairy cows follows a diurnal fluctuation; low values are indicative of subacute ruminal acidosis and associated with alterations rumen fatty acids concentrations. The objective the present study was to prospectively associations between fluid concentrations short, medium, long chain acids, under field conditions during first half lactation 53 Holstein farm. obtained by rumenocente...

Four ruminal cannulated Texel wethers were used to study the long-term effects of an acidotic diet on ruminal parameters and blood acid-base status. The short-term events around feeding and the recovery of the animals were followed after this nutritional disturbance. Sheep were limit-fed consecutively a control diet H (100% hay) (one week), an acidotic diet W (60% wheat + 40% hay) (2 weeks), an...

Studies show that acidosis is a very significant disorder of cattle. Studies in Wisconsin found that 20.1 and 23% of cows had subacute acidosis as defined by rumen pH < 5.5 (Oetzel et al., 1999, Oetzel, 2004) and others in Ireland had 11% (O'Grady et al., 2008). A large Australian study found that 10% of dairy cows less than 100 days in milk had acidosis, as defined by assessment of ruminal VFA...

The objective of this study was to investigate the effect of the pattern of concentrate-rich feeding on subacute ruminal acidosis (SARA), its severity, and the corresponding changes in VFA concentration. Eight rumen-cannulated Holstein cows were assigned to a 2 × 2 crossover design with 2 SARA challenge models and 2 experimental runs ( = 8 per treatment). Each run lasted for 40 d, consisting of...

Lameness in dairy cows includes many disease conditions, and a systematic approach is required to diagnose the predominant causes and identify the important risk factors. Lameness prevalence can be quantified using locomotion scoring systems. Entire herds can be scored quite easily as they walk access lanes. If lameness prevalence exceeds 15% of the herd, it is important to differentiate the ca...

  Distal renal tubular acidosis is a syndrome of abnormal urine acidification and is characterized by hyperchloremic metabolic acidosis, hypokalemia, hypercalciurea, nephrocalcinosis and nephrolithiasis. Despite the presence of persistent hypokalemia, acute muscular paralysis is rarely encountered in males.Here, we will report an eighteen year old male patient who presented with flaccid quadrip...

We investigated the relationship between ruminal pH and bacteria in calves fed calf starter with and without forage during weaning transition. First, 16 Holstein bull calves were obtained from dairy farms and equipped with rumen cannulas by cannulation surgery. Then, calves (73.5 ± 4.2 kg; mean ± SE) were assigned to groups fed calf starter either with forage (HAY, n = 8) or without forage (CON...