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The effects of various forms of gastrointestinal cannulation on digestive measurements in sheep

Published online by Cambridge University Press:  24 October 2018

J. C. MacRae  and
S. Wilson
J. C. MacRae
Affiliation:
Hill Farming Research Organisation, Bush Estate, Penicuik, Midlothian EH26 OPY
S. Wilson
Affiliation:
Hill Farming Research Organisation, Bush Estate, Penicuik, Midlothian EH26 OPY
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Abstract

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  1. 1. There was little difference in digestive (voluntary food intake, dry matter digestibility and nitrogen balance) and blood measurements (venous concentrations of corticosteroids, serum aspartate aminotransferase (EC 2.6.1.1), protein-bound iodine, urea and glucose) of intact sheep (eight animals) and of sheep prepared with rumen cannulas (sixteen animals) and subsequently with either simple 'T-shaped' (eight animals) or re-entrant cannulas (eight animals) at the duodenum and ileum, when fed ad lib. a chopped, medium-quality-hay ration.

  2. 2. Wool growth rates of the intact sheep were similar to those in sheep with rumen cannulas and with rumen cannulas plus simple 'T-shaped' cannulas, but higher (P < 0-01) than those with rumen cannulas plus re-entrant cannulas.

  3. 3. When the sheep were subsequently given a restricted intake (800 g/d) of dried grass, retention times of solid- and liquid-phase digesta markers in the rumen and caecum were similar in all sheep.

  4. 4. The use of the different preparations in digestive physiology studies is discussed.

Type
Papers on General Nutrition
Information
British Journal of Nutrition , Volume 38 , Issue 1 , July 1977 , pp. 65 - 71
Copyright
Copyright © The Nutrition Society 1977

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