Effect of harvest stage on the chemical composition, in vitro gas and methane production of Bituminaria bituminosa
The aim of the current experiment was to determine the effect of harvest stage on the chemical composition, in vitro gas and methane production, organic matter digestibility and metabolisable energy of Bituminaria bituminosa. After determination of chemical composition, Bituminaria bituminosa hay...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Ondokuz Mayıs University
2019-02-01
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| Series: | Anadolu Tarım Bilimleri Dergisi |
| Subjects: | |
| Online Access: | https://dergipark.org.tr/omuanajas/issue/43320/440508 |
| Summary: | The aim of the current experiment was to determine the effect of harvest stage on the chemical
composition, in vitro gas and methane production, organic matter digestibility and metabolisable energy
of Bituminaria bituminosa. After determination of chemical composition, Bituminaria bituminosa hay
was subjected to the test of in vitro gas production. The metabolisable energy and organic matter
digestibility of Bituminaria bituminosa hay were determined using the gas production at 24 h incubation.
Harvest stage had a significant effect on the chemical composition of Bituminaria bituminosa hay. Dry
matter, neutral detergent fiber and acid detergent fiber contents of Bituminaria bituminosa hay increased
while crude ash, crude protein contents and relative feed value decreased with advancing maturity. Dry
matter, neutral detergent fiber, acid detergent fiber, condensed tannin and relative feed value of
Bituminaria bituminosa hay ranged from 20.1 to 33.9 %, 45.0 to 66.1 %, 25.8 to 42.5 %, 0.96 to 1.25 %
and 78.3 to 141.85 respectively. On the other hand, crude ash and crude protein of Bituminaria bituminosa
hay ranged from 7.96 to 9.51 and 14.2 to 23.6% respectively. In vitro gas production, methane production
(as ml), metabolizable energy and organic matter digestibility of Bituminaria bituminosa hay ranged from
41.8 to 50.4 ml, 6.95 to7.70 ml, 9.28 to 11.0 MJ kg-1 DM and 63.6 to76.5 % respectively and decreased
with increasing maturity whereas the percentage of methane increased with increasing maturity. Although
the inevitable loss in nutritive value of Bituminaria bituminosa plant with advancing maturity, even at the
seeding stage, Bituminaria bituminosa plant could provide hay of acceptable quality for ruminant animals
to meet their requirements. In addition, low level of condensed tannin in Bituminaria bituminosa offers
an opportunity to decrease the risk of bloat for grazing ruminant animals. But this needs verification with
further testing. |
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| ISSN: | 1308-8750 1308-8769 |