The nutritive value of alkali and manure treated corn stover silage
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Date
1981
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Sokoine Univesity of Agriculutre
Abstract
Chopped corn stover was reconstituted, treated and ensiled in 3
ply-nylon bags placed in 10 gallon plastic drums at room temperature
for 30 days.
The treatments were:
(1) control-corn stover + water,
(2) 4% NaOH, (3) 4% NH^OH, (4) 3% NaOH + 1% NH40H, (5) 2% NaOH + 2%
NH.OH,
35% manure + 65% corn stover on wet basis, (7) 35% manure
4
- (6)
• ■
i
+ 4% NaOH by weight on DM basis.
and examined for smell and color.
After 30 days the bags were opened
Sub-samples were collected for
chemical analysis.
While there was a significant Cp < 0.05) increase of crude
protein and ash there was significant (p < 0.05) decrease of neutral
detergent fiber and acid detergent fiber.
There was significant
(P < 0.05) decrease of hemicellulose and cellulose with alkali treat-
ment, but the differences between alkali containing samples were not
I
significant (p > 0.05).
There was no significant (p > 0.05) changes in
lignin content between the treatments.
The in vitro dry matter diges
tibility (IVDMD) was significantly (p < 0.05) improved by alkali
treatments and decreased by manure inclusion.
Both alkali and manure
treatment significantly (p < 0.05) improved IVDMD than manure alone.
Different levels of NaOH and NH^OH in combination did not have better
results than any of the alkali separately.
The physical fermentation characteristics indicated that fermen
tation had taken place.
The alkali treated silages had sweet "estery"
iiismell and yellow color.
The manure containing silage had butyric acid
smell and dark brown color.
Chemical fermentation parameters measured
were pH, lactic acid and volatile fatty acids.
There was a significant
(P < 0.05) decrease of pH of alkali and waste containing silages after
ensiling.
There was no significant (p > 0.05) change of pH of post-
ensiled untreated silage when compared to the pre-ensiled untreated
silage.
Lactic acid and propionic acid showed a significant (p < 0.05)
decrease between the untreated and treated samples, while acetic acid
and butyric acid showed significant (,p < 0.05) increase between the
untreated and treated samples.
Description
Keywords
Nutritive, value, alkali, manure, corn stover, silage