The objective of this work was to evaluate the in situ disappearance of canola meal treated with water (control), in autoclave at 127oC for 30 min (CC), with 15% of Acacia mearnsii tannin (CT) and tannin followed by autoclaving (CTC). The effect of these treatments on in situ disappearance of dry matter (DM) and crude protein (CP) was evaluated by the nylon bag technique, using two rumen fistulated Holstein cows. The estimates of effective degradation of DM for control, CC, CT and CTC were 74.5, 64.2, 75.1, and 70.5%, and effective degradation of CP were 86.5, 64.0, 82.6, and 69.9%, respectively, assuming rumen of 5%/h outflow rate. No effect of tannin treatment on DM degradation was reported, however, there was a small influence on CP degradation. The treatments (CC and CTC) reduced DM and CP degradation. The heating effect, after tannin treatment, was smaller than its isolated effect, resulting in significant interaction. The heat treatment was the most effective to reduce ruminal degradation of canola meal DM and CP.
Degradabilidade in situ do farelo de canola tratado com calor e/ou tanino
V. Loyola,G. T. Santos,L. Zeoula,V. Bett,A. Pereira
Published 1999 in Revista Brasileira De Zootecnia
ABSTRACT
PUBLICATION RECORD
- Publication year
1999
- Venue
Revista Brasileira De Zootecnia
- Publication date
1999-05-01
- Fields of study
Agricultural and Food Sciences, Chemistry
- Identifiers
- External record
- Source metadata
Semantic Scholar
CITATION MAP
EXTRACTION MAP
CLAIMS
CONCEPTS
- acacia mearnsii tannin
A tannin treatment prepared from Acacia mearnsii and applied at 15% to the canola meal.
Aliases: tannin, A. mearnsii tannin
- autoclaving
A heat treatment applied at 127°C for 30 minutes to process the canola meal.
Aliases: autoclave treatment, heating
- canola meal
The feed ingredient being tested for ruminal disappearance after different treatments.
Aliases: canola-meal
- crude protein
The protein fraction of the canola meal used to assess in situ disappearance.
Aliases: CP
- dry matter
The non-aqueous fraction of the canola meal used to assess in situ disappearance.
Aliases: DM
- effective degradation
The estimated ruminal degradation measure calculated for dry matter and crude protein at a 5% per hour outflow rate.
Aliases: ED, effective ruminal degradation
- nylon bag technique
The in situ rumen incubation method used to measure disappearance of the treated canola meal.
Aliases: in situ nylon bag method, nylon-bag technique
REFERENCES
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