Niveles de inclusion de ensilaje de maiz en la racion de vacas lecheras con parto de otono.
1993
Klein R Fernando | Lanuza A Francisco | Navarro D Humberto
An experiment was conducted during the winter of 1989 at the "Eduviges" farm, Futrono, X Region, Medium quality grass and maize silage ensiled separately, were offered ad libitum to 120 Friesian cows in four mixtures with maize silage included at 0, 30, 60 or 100% of the forage on a dry matter basis. The same total protein level was provided in all ration by including increasing levels of rapeseed meal. The total daily concentrate allowance including rapeseed meal was 5 kg D.M., 1.6 kg D.M. forage col was also given. Silage intake was higher for mixtures containing a higher proportion of maize. Also, milk production increases (18.5, 18.8, 19.9 and 20.3 L/day, R2 - 0.94) whereas no changes in live weight or milk fat % (3.50, 3.62, 3.65 and 3.66) were observed. No health problems were detected even at the highest silage maize intake but from an economical viewpoint, the 60% corn silage inclusion represented the most convenient ratio.
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