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The nutritional value of pig diets containing about 30% field beans characterized by various levels of condensed tannins was studied. In a 54-day experiment on 24 Polish Large White x Duroc barrows (25-63 kg BW) four diets were fed: HT containing high-tannin field beans (cv. Nadwislahski), LT with low-tannin field beans (cv. Caspar), DHT with hulled high-tannin field beans, and DHTF with hulled high-tannin field beans and added white flowering pea hull fibre. The proanthocyanidin content of the HT, LT, DHT and DHTF diets was 591, 8, 70 and 70 mg/kg, respectively. Nutrient and energy digestibility, nitrogen balance, daily weight gain, and feed utilization were determined.
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Flis et al. (1999) studied this question.
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