Digestibilité et activité biochimique intracæcale chez le poney recevant un même aliment complet présenté sous forme granulée, expansée ou semi-expansée

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Abstract
Ponies were fed with ordinary pellets, extruded or semi-extruded pellets (moist-heat treatment of the cereal part only) containing 16.5% crude fiber, 10% protein and marked with 0.2% chromic oxide. Six ponies were placed in digestibility cages and received 3 kg feed/aminal per day in 2 meals. Three ponies with permanent fistula of the cecum received only 2 kg feed/animal per day in 2 meals of 1 h each. Under severely restricted feeding of a rather concentrated diet distributed over 2 meals the 3 physical forms of the feed did not lead to large differences either with regard to the digestibility coefficient, partial digestibility and metabolism in the cecum (measured by pH, ammonia percentage, volatile fatty acids and lactic acid), or as regards glycemia and lactacidemia. Use of a natural marker such as lignin, according to Van Soest''s method, offers more reliability than the method using the chromic oxide marker.

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