Buffering Ability of Several Compounds In Vitro and the Effect of a Selected Buffer Combination on Ruminal Acid Production In Vivo

Herod, Edward L.; Bechtle, R. M.; Bartley, E.E.; Dayton, A. D.

doi:10.3168/jds.s0022-0302(78)83695-9

Cited by 28 publications

(13 citation statements)

References 4 publications

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“…Several compounds have been evaluated for their buffering capacity, mostly by in vitro procedures (Herod et at., 1978;Counotte et at., 1979;Schaefer et at., 1982;Le Ruyet and Tucker, 1992;Miller et at., 1992). Herod et at.…”

Section: Buffering Compoundsmentioning

confidence: 99%

The Rumen Microbial Ecosystem

Hobson¹,

Stewart²

1997

347

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Section: Buffering Compoundsmentioning

confidence: 99%

The Rumen Microbial Ecosystem

Hobson¹,

Stewart²

1997

347

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“…A wide variety of substances have been used more or less successfully as buffering agents, such as sodium bicarbonate, 9 -11 potassium bicarbonate, 3,12 sodium carbonate, 12 -14 potassium carbonate, 3,12 calcium carbonate, 15 -17 magnesium carbonate, 16,18 sodium sesquicarbonate, 19 -21 magnesium oxide, 10,22,23 bentonite, 12 phosphates, 3,12 sodium chloride, 9,11,13 potassium chloride, 13,14 sodium propionate, 9 etc.…”

Section: Introductionmentioning

confidence: 99%

“…14,27,28 In vitro studies showed greater differences, but using too high and sometimes unrealistic proportions of antacid, even 1%. 12,29,30 This 1% amounts to dosing about 1.5 kg antacid/day −1 per dairy cow, a quite unrealistic quantity. Other works measured buffer capacity between extreme, non-physiological pH values of 3 and 11.…”

Section: Introductionmentioning

confidence: 99%

“…Other works measured buffer capacity between extreme, non-physiological pH values of 3 and 11. 3,12 Several authors 17,18,23 studied total acid consuming capacity and reactivity of different buffer substances, but at acid pH values lower than that of ruminal fluid. This also led to an overestimation of the acid consuming capacity of some substances, because the solubility and hence performance of antacids such as calcium carbonate, magnesium carbonate, magnesium oxide, etc depends strongly on pH.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A new methodology for studying the performance of products against ruminal acidosis

2003

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This paper describes a new and convenient methodology for studying the performance of products used in the treatment of ruminal acidosis. The method is based on potentiometric titration of the increase in buffer capacity and acid consuming capacity after the addition of products to a suitable medium at physiological rumen pH values. The testing medium is a mixture of buffer substances (phosphate, maleate and volatile fatty acids) that mimics real ruminal fluid in chemical composition, pH and temperature, providing useful experimental results allowing easy testing of antacids. This methodology was applied to the testing of four raw materials (sodium bicarbonate, two calcium carbonates and magnesium oxide). Results in good agreement with theoretical predictions and field experience were obtained.

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“…Consequently, in vitro feed evaluation systems that are independent of animal effects are developed. Herod et al (1978) (Herod's Buffer) as non-organic buffers on AV, pH, and IVDMD using rumen mixed microbiota.…”

Section: Introductionmentioning

confidence: 99%