Buffalo Bulletin (December 2014) Vol.33 No.4
http://ibic.lib.ku.ac.th/e-bulletin/IBBU201404015.pdf
Vo Thi Kim Thanh
ABSTRACT
The objective of this study is to contribute
to the information on the requirement of non protein
nitrogen in swamp buffalo.
In the first experiment, the animals were
daily fed rice straw and urea-molasses cakes (UMC).
The amount of UMC the buffalo consumed on the
first day was 16% of that consumed by the cattle.
After 10 days the daily consumption increased in
both types of animal, but buffaloes consumption
was only 35% that of cattle.
In the second experiment, the rumen fluid
NH3
was determined. The results show that NH3
concentration of buffaloes was significantly higher
than that of yellow cattle (P<0.001). This proves
that if the nitrogen stays longer in plasma, they
should recycle to the rumen by rumen amiability
function.
In the third experiment, four female cattle
and four female buffaloes were used. The animal
were daily fed 70 g dry matter per kg M0·75 by
difference types of food as king grass, ensiled
groundnut vice, ensiled maize leaves and stems
and rice straw according to a Latin Square (4x4)
design for each type of animal. The results show
that feed intake and CP digest not significant
difference, but allantoin excretion very low in
urine of buffaloes (P<001) and rumen fluid NH3
are
higher (P<0.001). The results from this study may contribute
to understanding of the mechanisms of physiological
adaptation to efficient recycling of urea as well as
PD in buffalo.
Keyworld: swamp buffalo, NPN require, nitrogen
cycling, adaptation
