Resumen:
This study aimed to assess impacts of fungal treatment
on the nutritional value of peanut hulls (PH) or urea at the
rate of 5 kg/100 g of PH. Fermented sugar beet pulp inoculated
with Trichoderma viride was supplemented to PH at rates of
5.0, 10.0 and 15.0 g/100 g air dry of PH andmixed well before
aerobic incubation for 21 days. Organic matter (OM) content of
PH declined with increased levels of fermented sugar beet pulp
inoculums, while crude protein (CP), ether extract (EE), and ash
increased. Fiber contents were decreased with both treatments
of fermented sugar beet pulp and urea. Total N of PH increased
with urea treatment, which reduced the true protein N to total
protein N ratio. In sacco degradabilities of dry matter (DM),
OM, and CP with urea treatment increased compared with
fungal treatment. The DM intake of peanut hulls treated with
fungus (PHF) was higher (P <0.05) than with peanut hulls
treated with urea (PHU). Digestibility of OM, CP, neutral
detergent fiber, and non-fiber carbohydrate by native breed
Ossimi sheep with PH were higher (P <0.05) than with PH or
urea treated PH. The intakes, losses, and balance of N increased
(P <0.01) with PHF versus PH feeding. Feeding PHF increased
(P <0.01) ruminal concentrations ofNH3-N, acetic acid, butyric
acid, and the acetic to propionic acid ratio. Bacterial and protozoal
counts increased (P <0.05) with feeding PHF or PHU
versus PH. Overall, this fungal treatment of peanut hulls created
a higher nutritive value feed for ruminants.
