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Ruminal acidosis in beef cattle: the current microbiological and nutritional outlook.
Ruminal acidosis continues to be a common ruminal digestive disorder in beef cattle and can lead to marked reductions in cattle performance. Ruminal acidosis or increased accumulation of organicExpand
Rumen Microbial Population Dynamics during Adaptation to a High-Grain Diet
ABSTRACT High-grain adaptation programs are widely used with feedlot cattle to balance enhanced growth performance against the risk of acidosis. This adaptation to a high-grain diet from aExpand
Effects of form of the diet on anatomical, microbial, and fermentative development of the rumen of neonatal calves.
Eight neonatal, Holstein bull calves were paired by birth date and birth weight and randomly assigned to either a finely ground or unground control diet (chopped hay and rolled grain) to study theExpand
Ruminal microbial and fermentative changes associated with experimentally induced subacute acidosis in steers.
We used six ruminally cannulated steers in a two-period crossover design to study ruminal fermentative and microbial changes associated with induced subacute acidosis. Steers were adapted to eitherExpand
Effects of different supplemental sugars and starch fed in combination with degradable intake protein on low-quality forage use by beef steers.
Twenty ruminally fistulated steers (Exp. 1, 448 kg and Exp. 2, 450 kg) were used in two consecutive randomized complete block experiments with five treatments in each experiment. The purpose was toExpand
Ruminal microbial development in conventionally or early-weaned calves.
Eight bull calves (four Holsteins and four Ayrshire calves with mean birth weight of 38.8 kg) were ruminally cannulated at 3 d of age and allocated to one of two weaning programs. All calves were fedExpand
Effect of Forage or Grain Diets with or without Monensin on Ruminal Persistence and Fecal Escherichia coli O157:H7 in Cattle
ABSTRACT Twelve ruminally cannulated cattle, adapted to forage or grain diet with or without monensin, were used to investigate the effects of diet and monensin on concentration and duration ofExpand
Manipulation of ruminal fermentation
Ruminant animals have two metabolic systems that differ in their nutrient requirements: microbial metabolism in the rumen and mammalian metabolism in the tissues. Maximizing or optimizing ruminantExpand
Fusobacterium necrophorum infections in animals: pathogenesis and pathogenic mechanisms.
Fusobacterium necrophorum, a Gram-negative, non-spore-forming anaerobe, is a normal inhabitant of the alimentary tract of animals and humans. Two subspecies of F. necrophorum, subsp. necrophorumExpand
A multiplex PCR procedure for the detection of six major virulence genes in Escherichia coli O157:H7.
A multiplex PCR procedure that detects six major virulence genes, fliC, stx1, stx2, eae, rfbE, and hlyA, in Escherichia coli O157:H7 was developed. Analyses of the available sequences of the sixExpand