Using New Protein Sources in Feeding Ruminants. 2- Using Guar Korma Meal in Rations of Lactating Buffalo Cows.

Abstract

This study was carried out to evaluate using different levels of guar korma meal as a source of protein in rations of lactating buffalo cows. Thirty animals were chosen and divided into six similar groups (5 in each). Animals were at the 2 nd season of lactation and assigned to receive guar korma meal at the rate of 0, 3.3, 6.7, 10.0, 13.3 and 16.7% to cover 0,10,20,30,40 and 50% from protein content of concentrate feed mixture (CFM) of rations A,B,C,D,E and F, respectively. Experimental rations consisted of CFM, berseem hay (RH) and wheat straw (WS) with rate 60:25:10, respectively. Feeding trial lasted 240 days, during which six digestibility trials were carried out to determine digestibility coefficients and nutritive values. Samples of blood and rumen liquor were taken to measure some parameters. In addition , feed cost and economical efficiency were conducted. The results obtained can be summarize as follows: • Increasing guar korma meal level in the experimental rations tended to slightly increase total DM intake (Kg/h) with little increase in DM, CP and EE but somewhat decrease of OM contents of calculated composition of experimental rations. • Experimental rations containing guar korma meal (rations E and F) significantly (P < 0.05) increased DM, OM, CP, EE and CF digestibility coefficients. The highest digestibility coefficients were recorded with ration F (containing 16.7% guar korma), recording 85.20, 93.15, 74.25, 70.82 and 65.16% for DM, OM, CP, EE and CF, respectively. Feeding values as TDN (%), DCP (%) and DE (Mcal/Kg DM) were significantly (P < 0.05) higher with increasing guar korma meal in experimental rations. Ration F (containg 16.7% guar korma) had the highest feeding values, being 71.03%, 10.15% and 3.13Mcal/Kg DM for TDN, DCP and DE, respectively.

Analysis of buffaloes fed roasted guar korma with regard to rumen fermentation

“…At three and six hours after feeding, the pH was somewhat lower in the E2 group due to the fact that they produced more TVFAs and less ammonia than the other two groups. These results concur with those of Soliman et al (2014) [18] and El-Monayer et al (2015) [25] in studies of sheep and buffaloes, respectively.…”

“…This is also connected to the rapid rumen degradable nitrogen from GNC, which causes the C and T 1 group levels to sharply rise and fall at three and six hours, respectively. The results aligned with research conducted on buffaloes by El-Monayer et al (2015) [25] and sheep by Soliman et al (2014) [18] , wherein the concentrate mixture's total N was enhanced by replacing cottonseed cake and soyabean meal with guar korma. The total N content of SRL in guar korma has increased since cottonseed cake (48.3) and soyabean meal (68.27) have lower rumen degradable nitrogen levels than guar korma (69.13).…”

“…The outcomes corroborated the findings of Goswami et al (2012) [8] , who found that replacing GNC with guar meal reduced NH3N in vitro. However, because guar korma is more biodegradable than cottonseed cake and soyabean meal, El-Monayer et al (2015) [25] found that the guar korma fed group of buffaloes had more NH3.…”