A design for flexible intestinal cannulas

Buttle, H. L.; Clapham, Crochley; Oldham, J. D.

doi:10.1258/002367782780935832

Cited by 7 publications

(4 citation statements)

References 8 publications

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“…Because of these variables, flexible plastic cannulas (polyvinyl chloride [PVC], Tygon, polyethylene, and silicone) may be preferable to rigid cannulas in some cases (Buttle et al, 1982;Banks et al, 1989;Rodhouse et al, 1988). The choice of cannula depends on several factors, such as the size of the lumen of the organ to be fistulated, the particle size and viscosity of the material to be sampled or infused, the site of exteriorization of the cannula, and, in the case of reentrant fistulas, the volume and consistency of ingesta expected to flow through the cannulas to avoid producing excessive resistance to flow.…”

Section: G Intestinal Cannulationmentioning

confidence: 99%

Techniques of Experimentation

Talcott

Akers

Marini

2015

Laboratory Animal Medicine

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Section: G Intestinal Cannulationmentioning

confidence: 99%

Techniques of Experimentation

Talcott

Akers

Marini

2015

Laboratory Animal Medicine

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“…The design and construction of a flexible duodenal cannula for sheep manufactured by molding silicone was reported by Horigane et al (1992). Little leakage was noted using these cannulas, with function maintained for more than 1 yr. Buttle et al (1982) also described the preparation of a silicone T cannula. Their cannula differed from that of Horigane et al (1992), in that it was constructed from silicone tubing and had a machined stainless steel inner T flange.…”

Section: Cannula Typesmentioning

confidence: 99%

“…However, flexible cannulas are also more likely to become dislodged. A unique approach to counter this problem was described by Buttle et al (1982) using a silicone cannula that is flexible but has a rigid T flange.…”

Section: Cannula Materialsmentioning

confidence: 99%

Considerations for gastrointestinal cannulations in ruminants.

Harmon

Richards

1997

Journal of Animal Science

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The complexity of ruminant digestion necessitates a greater variety and complexity of experimental methods than with any other species. The fact that dietary ingredients are first subjected to microbial fermentation requires elaborate measures to ascertain nutrients presented for absorption. Numerous approaches have been attempted to obtain representative samples of digesta at sites throughout the gastrointestinal tract. The choices of a researcher before an experiment include animal(s), site(s) for cannula placement, style of cannula, cannula material, and numerous other more subtle factors that may contribute to the success of an experiment. This review compares the advantages and disadvantages of various approaches, cannula types, and cannula materials that should be considered before experiments are conducted.

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“…Four Friesian steers (average initial weight 205 + 5-4 kg) were used in a 4 x 4 Latin square design experiment. They had been previously fitted with a rumen cannula and a simple T-piece cannula at the proximal duodenum (anterior to the pancreatic duct) and distal ileum (Buttle et al 1982).…”

Section: Animalsmentioning

confidence: 99%

A comparison between ytterbium acetate, ruthenium phenanthroline and indigestible acid detergent fibre in a double-marker system for intestinal flow measurements in steers

Ortigues¹,

Oldham²,

Smith³

et al. 1990

J. Agric. Sci.

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S U M M A R YThree double-marker systems were used in cannulated steers offered straw-based diets supplemented with barley, fishmeal or a combination of both, in an attempt to reduce the risks of misinterpreting biological results based on calculations of digesta flows using markers. Ruthenium phenanthroline (Ru-phe), ytterbium acetate (Yb-ac) and the indigestible acid detergent fibre fraction (IADF) were used as markers of the particulate phase of digesta in conjunction with Cr-EDTA as a liquid-phase marker to estimate duodenal and ileal digesta flows. The present paper presents the difficulties met in the application of marker techniques.The particulate marker used in a double-marker system for calculation of nutrient flow modified the degree of statistical significance observed for dietary treatment effects on digesta flow parameters.The data suggest that the type of diet used affects the behaviour of individual markers in different ways and could incur some bias in the results. It is hypothesized that the physical and chemical characteristics of digesta, in different dietary conditions, can be responsible for differential attachment of markers to particles of the solid phase. In such cases, the distinction made in the double-marker technique between particulate and liquid phases may not be sufficient to correct for lack of representativeness of digesta contents sampled from T-shaped cannulae.For the diets studied it was concluded that the interpretation of digestion parameters should be based on both Ru-phe and Yb-ac results.

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A design for flexible intestinal cannulas

Cited by 7 publications

References 8 publications

Techniques of Experimentation

Techniques of Experimentation

Considerations for gastrointestinal cannulations in ruminants.

A comparison between ytterbium acetate, ruthenium phenanthroline and indigestible acid detergent fibre in a double-marker system for intestinal flow measurements in steers

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