author(s)
P Konwar, SP Tiwari, M Gohain and M Buragohain

abstract
The study was conducted on twenty indigenous non-descript goat kids allocated into four different groups. T₁ was the negative control without concentrate supplement. T₂, T₃ and T₄ were supplemented with different levels of concentrate mixtures having 16, 20 and 24% DCP respectively. The animals were naturally infected with gastrointestinal nematodes and the experiment lasted for 60 days. The DM, DCP and TDN intake were found significant (P<0.01) and being highest in T₃ group. The body weight gain and feed conversion efficiency, N and P balance were significantly (P<0.01) highest in T3 and lowest in T1 whereas Ca balance was highest in T₃ and lowest in T₄. At the 45^th day of experiment, ruminal pH significantly (P<0.05) increased in protein supplemented groups. The total nitrogen, TCA precepitable nitrogen, soluble nitrogen, microbial protein and total bacterial count were significantly (P<0.01) higher in T₃ while the total protozoal counts were significantly (P<0.01) lower in T₃.