Resumen

COSTA, Lucas Teixeira et al. Economical analysis of different concentrate levels for dairy crossbred fed sugar cane based diets. R. Bras. Zootec. [online]. 2011, vol.40, n.5, pp. 1155-1162. ISSN 1806-9290.  http://dx.doi.org/10.1590/S1516-35982011000500030.

Sixteen crossbred Holstein × Zebu cows (groups from ½ to ¾ of Holstein × Zebu) at third of fourth lactation were allotted to four 4 × 4 Latin squares to evaluate the economical viability of increasing dietary concentrate level. Cows presented previous milk yield from 2,500 to 3,000 kg, adjusted for 300 days, and grazed pasture during the rainy season, and with 110 days of laction in the beginning of the experimental period. Because of the prices of milk and concentrate during the experiment, it is not interesting to use concentrate in the diets of milk cows fed sugar cane. If the productive and economical aspects toghther and the prices of R$ 0.70 and R$ 0.50 for the milk and the concentrate, respectively are considered, the use of 24% concentrate in the diet is the most interesting option for dairy cows fed sugar cane.

Palabras llave : concentrated; costs, milk; price; productive; systems of production.