TY  - JOUR
T1  - The Effect of Formaldehyde or Sodium Hydroxide on <I>In situ </I>Rumen Degradation of Low and High Fat Sunflower Meal
AU - , T. Mohammadabadi AU - , M. Danesh Mesgaran AU - , A.R. Heravi Moussavi AU - , M.R. Nasiri AU - , M. Chaji 
JO  - Research Journal of Biological Sciences
VL  - 3
IS  - 9
SP  - 1115
EP  - 1118
PY  - 2008
DA  - 2001/08/19
SN  - 1815-8846
DO  - rjbsci.2008.1115.1118
UR  - https://makhillpublications.co/view-article.php?doi=rjbsci.2008.1115.1118
KW  - Degradability
KW  -formaldehyde
KW  -sodium hydroxide
KW  -sunflower meal (high fat
KW  - low fat)
AB  - The objective of this study was to determine <I>in situ</I> dry matter (DM) and crude protein (CP) degradability of sunflower meal containing 25 and 165 g fat kg<SUP>-1</SUP> DM and untreated and treated with sodium hydroxide (NaOH, 40 g kg<SUP>-1</SUP> DM) and formaldehyde ( 30 and 60 g kg<SUP>-1</SUP> DM). DM and CP degradation of the samples were determined using <I>in situ </I>technique in two fistulated Holstein steers (400±12 kg, body weight) and data were analysed to estimate soluble fraction (a), potentially degradable fraction (b), degradation rate (c) and effective degradability (ED). Formaldehyde decreased (a) fraction of DM (p<0.05). NaOH treated high fat sunflower meal had the highest (a) fraction and the lowest of (b) fraction of DM, (0.43 and 0.31, respectively). Formaldehyde and NaOH significantly decreased degradation rate (c) of DM. Formaldehyde (30 g kg<SUP>-1</SUP> DM) treated low fat sunflower meal had the lowest ED of DM (0.44, k = 0.03 h <SUP>1</SUP>) (p<0.05). Fraction of (a) and ED of DM of low fat sunflower meal was less than high fat sunflower meal. Formaldehyde and NaOH significantly were affected fractions of a, b, c and ED of CP (p<0.05). Fraction of (a) of CP decreased by formaldehyde and NaOH. Treatment of sunflower meal (low and high fat) with formaldehyde at 60 g kg<SUP>-1</SUP> DM resulted in the highest (b) fraction and the lowest of (c) fraction and ED of CP. Crude protein (b) fraction of low fat sunflower meal was more than high fat sunflower meal but there was not any significant difference for (a) fraction and ED. DM and CP disappearance after 24 h was decreased by formaldehyde and NaOH. Therefore, it is appears that formaldehyde, NaOH and fat content of sunflower meal can affect DM and CP degradability parameters.
ER  -