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Abstract
Castellanos-Ruelas, A.F., Tepal-Chalé, J.A., Bores-Quintero, R.A., Chel-Guerrero, L.A. and Betancur-Ancona, D.A. 2007. Alkali treatment of swine manure solids for inclusion in sheep diets. J. Appl. Anim. Res., 31: 21–24.
In order to reduce the risk of pollution of swine manure, as well as making its profitable use as a feed for ruminants, it was treated with urea and I or a legume seed. In the first experiment in situ dry matter digestibility was estimated after addition of 30g urea or 50g raw legume seed/kg of swine manure solids (SMS) using two fermentation periods, 5 and 7 days. In the second experiment 0, 15 or 30g urea and/or soybean per kg SMS was fermented for 3 or 5 days. In the third experiment the effect of incorporating treated SMS in sheep diets on growth and body composition was evaluated. Generation of ammonia by the urea- legume system in the SMS increased its digestibility and was reflected in weight gain in the experimental animals. SMS treated with 30g urea and 15g soybean/kg SMS fermented for 5 days could be included in sheep diets up to 15% of feed dry matter with positive growth results over short growth periods.
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