Substitution of concentrate feed with fresh mulberry (Morus alba), in the diet of dairy cattle.
compared four balanced diets in which different percentages
of 84-day-old fresh mulberry dry matter (0%, 20%, 40% and
60%) substituted its equivalent of dry matter in the concentrate.
The total intake of dry matter varied between 3.12%
and 3.24% in relation to live body weight (BW). No significant
differences were observed (P≥0.05) in the total consumption
of dry matter among cows with the same trial. In
the ration without mulberry (0%), forage made up 42% of the
total dry matter intake and in the 60% mulberry ration, 86%.
The intake of mulberry was close to 2%/BW in the 60% ration.
The substitution ratio was 677 g/animal/day of concentrated
dry matter per kg of mulberry dry matter added to the
diet, in addition to the substitution of 323 g/animal/day of
black sorghum and soybean mix. The protein replaced was
576 g/animal/day of concentrate and 424 g/animal/day of
black sorghum and soybean mix per each kg of mulberry crude
protein. Each megacalorie of digestible energy of mulberry
added to the diet, substituted 0.675 mcal/animal/day of
energy in the concentrate feed and 0.325 mcal/animal/day of
the black sorghum and soybean mix. Significant differences
(P<0.05) appeared among the four different levels of added
mulberry in relation to the live body weight of the cattle and
in their daily milk production. Within the same diet there were
no differences (P>0.05) between the initial and final body
weight of the animals and the variations in daily milk production