Hadjipanayiotou, M.
(1988)
The feeding value of peanut hay and silage made from peanut shells and citrus pulp with the addition of urea.
Other.
Ministry of Agriculture and Natural Resources, Nicosia, Cyprus.
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Abstract
Chemical analyses, and in vitro and in vivo digestibility studies, showed that peanut shells are of low nutritional value. On the other hand, peanut hay had relatively high apparent digestion coefficients (dry matter 0.60, organic matter 0.64, crude protein 0.62, gross energy 0.65). Urea added as an aqueous solution to silages (20 g urea/kg mixture) prepared in the laboratory from different proportions of citrus pulp (18% DM) and peanut shells (89% DM), i.e. 1:0, 2:1, 4:1 and 0:1, was mostly retained. Citrus pulp had very low pH values before and after ensiling (3.5 and 3.3, respectively). All silages containing citrus pulp had a nice aroma and colour, and low pH values, characteristic of good quality silages. Silages made of peanut shells with or without urea were mouldy and of very poor quality. Finally, a silage composed of 4 parts citrus pulp and 1 part peanut shells made in an earthem pit silo, and fed at different ratios to concentrates (0, 0.33 or 0.66) to growing Friesian heifers and dry Damascus goats, was of poor to moderate quality (pH 4.9, dark colour). Apparent digestion coefficients measured in dry Damascus goats decreased with increasing level of silage in the finished diet (OM digestibility: control 0.69, 0.3 silage 0.63, 0.6 silage 0.56). Similarly, heifers fed on silages had a poorer performance than those on the control diet (daily liveweight gain: control 0.65 kg, 0.2 silage 0.48 kg, 0.4 silage 0.03 kg)
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