ECONOMICAL RESULTS IN A DAIRY SYSTEM WITH A PROTEIN BANK OF GLYCINE (NEONOTONIA-WIGHTII)

An economical analysis was performed during two years (1986-1988) at t he Institute of Animal Science on the use of a dairy production system based on the grass and legume combination Panicum maxi mam Jacq (guin ea) and Neonotonia wightii (glycine) grazings. The cost of production and the performance of some economic indicators were analyzed (product ion value, returns, unit costs, milk production, grams of feed/kg of m ilk produced and others). The relationship between the principal eleme nts of cost (x) and milk production (Y) was estimated through regressi ons. The cost of production of the litre of milk was 0.18 cents, the p roduction values were stable and economically satisfactory. The level of feed expenses did not surpass 50 %. with respect to the total produ ction expenses Feed and salary were the most significant elements of c ost (P<0.05), with linear adjustments of R(2)=0.64 and 0.94 in the rai ny and dry seasons, respectively. The system could be a favorable alte rnative taking into account productions above 12 kg/animal/day, as wel l as the low costs of production end the advantages of using as a prin cipal element in the diet, graminae and legume grasslands.