Effect of tannin treatment on protein protection of soybean meal and performance of buffalo heifers
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Date
2019
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Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana
Abstract
The present study was conducted to investigate the effect tannin on protein protection
of Soybean meal on in vitro degradability, in vivo nutrient utilization, blood profile,
and growth performance of buffalo heifers. The study was conducted in two phases.
In the phase I SBM was treated with quebracho and tannic acid, chemical composition
of treated SBM in comparison to control SBM was determined. In vitro studies were
conducted using treated SBMs, and TMRs (containing treated SBM) as substrates. In
Phase II, in vivo study was carried out to determine the effect of tannic acid treated
SBM on nutrient utilization, performance of buffalo heifers and blood metabolites.
The tannic acid lowered ammonical nitrogen significantly (P<0.05) compared to
Quebracho and control. Tannic acid improved partitioning factor non-significantly
(P<0.05). The TMR prepared by replacing 50% SBM with 1% tannic acid treated
SBM was selected for in vivo trial on the basis of in vitro because it reduced
ammonical nitrogen compared to control significantly, there was higher EMMP than
control and PF was numerically higher. A 90-day growth trial was conducted on
buffalo heifers. Sixteen animals were divided in to two groups. Animals were fed total
mixed ration with dry roughage, non-leguminous silage and concentrate in the
proportion of 10:50:40. There was no significant (P>0.05) difference between control
and treatment group in total DM but CP intake was significantly (P>0.05) lower in
treatment group. In vivo digestibility of CP, EE and cellulose decreased significantly
(P<0.05). The tannic acid treatment of SBM gave encouraging results in terms of
growth in buffalo heifers. Tannic acid significantly (P<0.05) increased weight gain/kg
CP intake. It also improved FCR. Tannic acid reduced alkaline phosphatase and
alanine transaminase significantly (P<0.05).
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