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Abstract
Twelve lactating Baladi goats weighed 24-27 kg in the first week of lactation were randomly assigned among four experimental treatments (three animals each) using 4x4 Latin square design. The period of this trial extended for 120 days divided into four experimental periods each of 30 days. Animals were fed the following treatments: 60% concentrate feed mixture (CFM) and 40% berseem clover (Control), 60% CFM + 20% berseem clover + 20% dried rumen contents (T1), 60% CFM + 20% berseem clover + 20% dried rumen contents treated with biological compound ZAD (T2) and 60% CFM + 20% berseem clover + 20% dried rumen contents treated with ZAD compound + 20g biological compound ZADO /h/d (T3). Results showed that (T3) and (T2) groups recorded higher values of digestibilities coefficients compared with the control and (T1) groups. Total digestible nutrients (TDN) and digestible crude protein (DCP) increased with the two biological treated rumen contents (T2 and T3) in comparison with (T1) group. The groups contained rumen contents (T1, T2 and T3) recorded higher values (P>0.05) of ruminal pH and NPN than the control group. The biologically treated groups (T2 and T3) showed higher increase (P<0.05) for rumen liquor ammonia, NPN and TVFA’s (P>0.05) compared with (T1) group. However, (T3), (T2) and control groups increased (P>0.05) ruminal TN and True-PN (P<0.05) compared with T1 group. Moreover, results showed that inclusion of rumen contents in experimental rations decreased (P>0.05) blood serum total proteins, globulin, urea, creatinine and AST compared with those of the control ration. While, it increased (P>0.05) ALT compared with control. The treated group (T3) increased (P<0.05) blood serum albumin and total lipids compared with (T1) group. Also, (T3) and (T2) increased (P>0.05) blood serum total proteins, A/G ratio, ALT and glucose compared with (T1) group. However, (T1) group increased globulin, creatinine and AST compared with other groups. (T3) and (T2) groups increased (P>0.05) daily milk yield, 4% FCM, fat, TS, SNF and lactose yields compared with (T1) group. All the groups contained rumen contents slightly increased (P>0.05) milk pH compared with control group. However, the control ration increased (P>0.05) SNF, lactose, ash yields and milk acidity compared with groups fed rumen contents rations. Feed efficiency was insignificantly (P>0.05) improved with biological and control treatments