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Matching Livestock Systems with Available Resources |
MEKARN Regional Conference 2007 |
Three cattle calves and three buffalo calves were weaned after receiving colostrum and reared by bottle feeding of milk. During the first month the animal were not have access to solid food. Determine of basal purine excretion (fasting), glomerular filtrate rate (GFR) and purine derivative (PD) recovery rate from purines given with milk. After one month the animals were have access to solid feed (urea-treated rice straw) to stimulate ruminant development. After three months of age, at which time the solid food were given, again to determine basal purine excretion and GFR.
This study showed that basal purine (fasting diet) excretion not difference , from buffaloes to cattle in milk fed period (not access to solid feed yet) (P>0.05) and the recovery rate of purine not difference either, but there were differences happened when the animal after 3 months of age and two months of access to solid feed (P<0.01). The GFR lower in buffaloes on both milk fed and solid fed (rumen development) (P<0.01) while the excretion of PD in milk fed period is similar between two types of animal (P>0.05).
So GFR lower in buffaloes is condition for PD were stay longer in the blood thus more time for recycling to the rumen and metabolized by bacteria.