The reduced efficiency of antibiotic growth promoters in livestock, and the unavoidable residual effects on livestock products such as egg, meat and milk have pushed researchers to rush towards the use of phytobiotics in animal feed. This study was conducted at the Teaching and Research Farm of the University of Dschang to evaluate the Effect of Curcuma longa powder as feed additive on hemato-serological parameters in Guinea pigs. A total of 120 three weeks old Guinea pigs (60 males and 60 females), with an average weight of 150 ± 20 g were used. The animals were randomly distributed into four treatments in a completely randomized design with 30 animals per treatment (15 males and 15 females). Four experimental treatments were used by adding 0%, 0.25%, 0.5% and 1% C. longa in the diet corresponding to R 0 , R 0.25% , R 0.5% and R 1% respectively. At the 8th week of age, 12 Guinea pigs (6 males and 6 females) per treatment were fasted for 12 hours and sacrificed by cervical dislocation. Blood was rapidly collected from the jugular vein for the evaluation of haematological and biochemical parameters. Results revealed that the inclusion of Curcuma longa at 0.25% significantly (p < 0.05) increased the concentration of hematocrit, lymphocytes, monocytes, granulocytes and platelets. A significant decrease (p < 0.05) was observed in hemoglobin, red blood cells, white blood cells, serum lipids, globulin, AST, ALT, and urea. It was concluded that the use of Curcuma longa powder at 0.25% as feed additive positively regulates blood serum parameters of Guinea pigs.

The present study was assigned to evaluate the Effect of Dracaena arborea roots powder in ration on growth performances and some hematological parameters in the guinea pig on diet supplemented with graded levels of incorporation. A total of 40 guinea pigs weaned of local breed and aged 3 weeks were divided into 4 identical batches. Each of the groups was randomly assigned one of 4 rations containing different levels of the powder from Dracaena arborea (Da) roots: Da0; Da0.25; Da0.5 and Da0.75. The results at the 11th week of breeding showed that the highest intake (21.13 g/d) was obtained with the Da0.5 ration. The highest live weight (372.50 g) and total weight gains were obtained with the Da0.25 ration. In addition, the highest commercial (161.75 g) and conventional (307.75 g) carcass weights and large intestine length (99.5 cm) were obtained with the D0.25 ration. The highest values for granulocytes (0.250.10 3 /µl), platelets (805.10 3 /µl) and lymphocytes (6.92.10 3 /µl) were respectively, obtained with the rations containing Da0; D0.5 and D0.75. In view of the above, Dracaena arborea roots powder can be used at a rate of 0.25% in the ration, to improve the productivity of the guinea pig (Cavia porcellus).