High‐production dairy cattle exhibit different rumen and fecal bacterial community and rumen metabolite profile than low‐production cattle

Rumen Acidosis in Dairy Cattle: Bunk Management Considerations

Despite diet formulation for chemical (15) and physically-effective fiber (12) minimums, nonstructural carbohydrate (NSC) and starch maximums (16), and the use of total mixed rations (TMR), some degree of SARA may be inevitable in high-producing dairy herds because total chewing and rumination times per kg of rumen-fermentable organic matter (RFOM) intake declines as RFOM intake increases (Figu...

Rumen-protected choline: A significance effect on dairy cattle nutrition

Choline is a vitamin-like substance it has multi-function in animal production, reproduction, and health. The transition period is most crucial stage in lactation cycle of dairy cows due to its association with negative hormonal and energy balances. Unfortunately, unprotected choline easily degrades in the rumen; therefore, choline added to the diet in a rumen-protected form. The use of rumen-p...

Seasonal changes in the digesta-adherent rumen bacterial communities of dairy cattle grazing pasture

The complex microbiota that resides within the rumen is responsible for the break-down of plant fibre. The bacteria that attach to ingested plant matter within the rumen are thought to be responsible for initial fibre degradation. Most studies examining the ecology of this important microbiome only offer a 'snapshot' in time. We monitored the diversity of rumen bacteria in four New Zealand dair...

Slime from the Rumen of Cattle

Previous work has shown the percentage of encapsulated bacteria increased when cattle were placed on a feed-lot bloat type diet (Jacobson et al., 1957) and a recent investigation has shown Streptococcus bovis and Peptostreptococcus elsdenii increases in numbers as the onset of bloat symptoms occurred in cases of feed-lot bloat (Gutierrez et al., 1959). Slime produced by ruminal microorganisms i...

Development of rumen escapable capsules for cattle