| dc.description.abstract | This work evaluated the effect of replacing soybean paste with lupin bean (Lupinus mutabilis) in
a balanced feed for dairy cows. For this purpose, 12 Holstein Friesian dairy cows housed at the
Irquis Farm (University of Cuenca) were randomly divided into two groups according to feed
supplementation: group 1, (n = 6) lupine grain and group 2 (n = 6) soybean paste. The experiment
consisted of three six-day periods, with three days of adaptation each, giving a total of nine days
for each period. Two treatments were applied: T1 (balanced with lupine) and T2 (balanced with
soybean), these were administered in an amount of 2.75 kg/day, distributed in the morning and
in the afternoon after milking to each animal, group one consumed T1 in the first and third period
and T2 in the second period (T1-T2-T1); group two consumed T2 in the first and third period and
T1 in the second period (T2-T1-T2). A daily record was kept of the milk production of each cow in
the three periods. On the last day of each period, 50 ml of milk samples were taken from each
animal to analyze protein, lactose, fat, total solids, non-fat solids, density and pH. The results of
milk production, milk quality, fat percentage, total solids, density and pH showed no significant
difference (P ˃ 0.05) between both treatments. However, T2 presented significance (P < 0.05) in
protein, lactose and non-fat solids. Regarding milk production costs, to produce one kilogram of
milk using soybean or lupin requires $ 0.15 and $ 0.19 respectively. In conclusion, lupine can
effectively replace soybean paste in dairy cow feed because it can influence milk production at
similar levels as soybean. | |
