Effects of Palm Kernel Shell Ash on Lime-Stabilized Lateritic Soil

The research investigated the effects of palm kernel shell ash (PKSA) on lime-stabilized lateritic soil. Preliminary tests were performed on three soil samples, i.e., L1, L2 and L3 for identifi- cation; the results showed that L1 was A-7-6, L2 was A-7-6, and L3 was A-7-6. The optimum amount of lime for each of the soil samples was achieved. The optimum amount for L1 was 10%, for L2, 8% and for L3, 10%; at these values they recorded the lowest plasticity indexes. The further addition of PKSA was per- formed by varying the amount of PKSA and lime added to each of the soil samples. The addition of 4% PKSA+ 6% lime, the ad- dition of 4% PKSA + 4% lime, and the addition of 4% PKSA + 6% lime increased the California Bearing Ratio (CBR) to the highest values for L1, L2 and L3 from 8.20%. It was concluded that PKSA can be a suitable complement for lime stabilization in lateritic soil

EFFECTS OF PALM KERNEL SHELL ASH ON LIME-STABILIZED LATERITIC SOIL

The research investigated the effects of palm kernel shell ash (PKSA) on lime-stabilized lateritic soil. Preliminary tests were performed on three soil samples, i.e., L1, L2 and L3 for identification; the results showed that L1 was A-7-6, L2 was A-7-6, and L3 was A-7-6. The optimum amount of lime for each of the soil samples was achieved. The optimum amount for L1 was 10%, for L2, 8% and for L3, 10%; at these values they recorded the lowest plasticity indexes. The further addition of PKSA was performed by varying the amount of PKSA and lime added to each of the soil samples. The addition of 4% PKSA+ 6% lime, the addition of 4% PKSA + 4% lime, and the addition of 4% PKSA + 6% lime increased the California Bearing Ratio (CBR) to the highest values for L1, L2 and L3 from 8.20%. It was concluded that PKSA can be a suitable complement for lime stabilization in lateritic soil

Use of Rosmarinus officinalis in sheep diet formulations: Effects on ruminal fermentation, microbial numbers and in situ degradability

This study investigated the effects of rosemary dietary supplementation on the rumen degradability of alfalfa hay, the ruminal bacterial population and rumen metabolism in sheep. The experiment was designed as a 4. ×. 4 Latin square balanced for carry-over effects using four ruminally cannulated sheep fed a basal diet consisting of 1.5. kg/day of alfalfa hay supplemented (400. g/day) with one of four different concentrates as follows: (1) control (CTR); (2) CTR with the addition of 1.75% rosemary essential oil adsorbed on an inert support (EO); (3) CTR with the addition of 2.50% dried and ground rosemary leaves (RL); and (4) same as (3), except that rosemary leaves were included in the concentrate before pelleting (RL pellet). No effects were recorded in the volatile fatty acid or lactic acid production. Ruminal ammonia concentration tended to be lower (P = 0.077) with the RL pellet diet. The crude protein degradability, after incubation times of 2 and 48. h, decreased (P <. 0.001) in sheep fed with the RL pellet diet. The dry matter degradability followed the same trend, with lower (P <. 0.001) rates of disappearance resulting from the RL pellet diet after 24. h of incubation. The pelleting process may influence the availability of the active compounds of rosemary leaves, allowing greater antibacterial activity. Supplementation of sheep diets with rosemary leaves could potentially be used to manipulate ruminal degradation patterns