Neem Extract
The mature neem leaves, were freshly harvested, washed and carefully cleaned
by using running tap water and then left to air-dry under the shade for two days. The
dried leaves were ground into a powder. An amount of 240 grams of powder was
mixed with 1200 ml of sterile distilled water in 2000 mL conical flask and heated
by using water bath at 70°C for 6 hours. The resulting extract was filtered through
filter paper (Whatman No. 1, USA) and concentrated later by using a rotary vacuum
evaporator (Heidolph Rotary Evaporator, USA) at 40°C. The concentrated extract
was left to dry in the oven at 40°C for 48 hours. The resulting sediment was stored
at 4°C until used. The feeding regime is 14.15 grams of the extract diluted with
250 ml of distilled water and 50 ml of the water extract was given to each goat with
an average body weight of 40 kg.