Abstract
Full-fat soya beans from two different producers, and a chemically similar combination of soya bean meal plus oil, were tested for their metabolizable energy (ME) content and nutrient digestibility, with both adult cocks and young broilers, in meal and in pelleted feeds. For both type of birds the ME content was significantly higher when full-fat soya beans were fed in pelleted feeds, as compared with feeds in meal form, the effect being larger with young broilers. The average ME values of the soya beans, per kg dry matter, were: Cocks-meal 3812 Kcal (15.93 MJ); cocks-pellets 3972 Kcal (16.62 MJ); broilers-meal 3271 Kcal (13.69 MJ); broilers-pellets 3654 Kcal (15.29 MJ). With cocks there was no influence of pelleting on the nutritive value of soya bean meal plus oil. For broilers, which showed a lower ME content and fat digestibility of the feedstuffs, pelleting did increase the ME content and fat digestibility of soya bean meal plus oil.
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