Thiamin Supplementation of an All-Concentrate Diet for Feedlot Steers

Grigat, G. A.; Mathison, G. W.

doi:10.4141/cjas82-098

Cited by 12 publications

(5 citation statements)

References 14 publications

(9 reference statements)

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“…However, little is known about micro-organisms which produce thiaminases in pathological conditions, and nutritional conditions which lead to the selection of thiaminase-producing strains cannot be reproduced experimentally. Moreover, high thiaminase activity had frequently been measured either in the rumen or in other parts of the digestive tract without associated pathological manifestations (Linklater et al 1977;Grigat & Mathison, 1982). In Europe, CCN is often associated with intensive feeding systems and high-concentrate diets which favour rumen acidogenic conditions (Tournut et al 1967;Lusby & Brent, 1972;Loew, 1975;Harmeyer & Kollenkirchen, 1989).…”

Section: Thiamin: Sulfur Excess: Cerebrocortical Necrosismentioning

confidence: 99%

Microbial thiamin metabolism in the rumen simulating fermenter (RUSITEC): the effect of acidogenic conditions, a high sulfur level and added thiamin

et al. 1997

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The effects of acidogenic conditions, a high S level and the addition of thiamin on the rumen microbial metabolism of thiamin were investigated in vitro in a semi-continuous fermenter (RUSITEC), using a factorial design. Acidogenic conditions were obtained by simultaneously increasing the starch : cellulose ratio and the amount of solid substrate fed, and by decreasing the buffering capacity of the liquid phase of the fermenter. S in the form of sulfate was supplied at two levels, one corresponding to a control amount of S (2 g/kg dietary DM), the second to an excess (5 g/ kg DM) which is sufficient to trigger cerebrocortical necrosis (CCN) when used in vivo. Acidogenic conditions decreased the pH of the fermenters, CH4 production and cellulose digestibility, increased the short-chain fatty acid production, but had no effect on thiamin production. The high S level enhanced the production of sulfide considerably, had no effect on the microbial metabolism of energy and N, and decreased thiamin production (326 Y. 266nmoYd). The added thiamin was rapidly converted into phosphorylated compounds which largely decreased the apparent synthesis of this vitamin by the rumen microflora. The total thiamin flow was increased by added thiamin. In no case was thiaminase activity in the fermenter liquid phase significantly modified. The high level of S induced only a limited decrease of total thiamin flow. Consequently, it is unlikely that the investigated factors could be considered to be high risk factors for the thiamin-dependent CCN.

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Section: Thiamin: Sulfur Excess: Cerebrocortical Necrosismentioning

confidence: 99%

Microbial thiamin metabolism in the rumen simulating fermenter (RUSITEC): the effect of acidogenic conditions, a high sulfur level and added thiamin

et al. 1997

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“…The sulfate content in drinking water Grigat and Mathison (1982) concluded that decreased production in cattle fed all-concentrate diets is possibly due to marginal thiamine inadequacies.…”

Section: Population Studymentioning

confidence: 99%

Association of sulfate-water and blood thiamine concentration in beef cattle: Field studies

Olkowski¹,

Christensen²,

Rousseaux³

1991

Can. J. Anim. Sci.

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“…As opposed to Experiment 1, a n effect on intake due to inclusion of thiamin was not found (P>O.lO) in Experiment 2. No effect of supplemental thiamin was seen on feed intake in a study reported by Grigat and Mathison (1982). However, Zinn et al (1987) reported that calves on diets supplemented with B vitamins at two levels (containing 20 or 200 mg of thiamin/calf) had reduced intake, particularly in the calves on the higher level of supplemental thiamin.…”

Section: Resultsmentioning

confidence: 90%

“…Conversely, Grigat and Mathison (1982) reported ADG and carcass weights were increased for thiamin-supplemented calves (1.9 mg thiaminkg diet) fed an all-concentrate, feedlot diet for 98d. But, when they repeated a similar study at a higher supplementation level (6.25 mg thiamin/ kg diet) on sale barn calves for 98d, there was no significant change in growth performance (Grigat and Mathison, 1983).…”

Section: Resultsmentioning

confidence: 94%

Effects of Supplemental Thiamin on Growth Performance and Immune Function in Stressed Stocker Cattle

Silzell

Hellwig

Kegley

et al. 2002

Journal of Applied Animal Research

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Thiamin Supplementation of an All-Concentrate Diet for Feedlot Steers

Cited by 12 publications

References 14 publications

Microbial thiamin metabolism in the rumen simulating fermenter (RUSITEC): the effect of acidogenic conditions, a high sulfur level and added thiamin

Microbial thiamin metabolism in the rumen simulating fermenter (RUSITEC): the effect of acidogenic conditions, a high sulfur level and added thiamin

Association of sulfate-water and blood thiamine concentration in beef cattle: Field studies

Effects of Supplemental Thiamin on Growth Performance and Immune Function in Stressed Stocker Cattle

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