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ABSTRACT
This study was conducted to examine the effects of ginger (Zingiber officinale), turmeric (Curcuma longa), red pepper (Capsicum annuum) and black pepper (Piper nigrum) on the mormetric and histologial studies of some internal organs and intestinal gut physiology of broiler. A total of 100 day old chicks were used for the study which lasted for ten weeks. Birds were randomly allotted to five treatments in a completely randomized design, with each treatment having 20 birds, with 3 replicates. Ginger, turmeric, black pepper, red pepper were administered in the broiler at (5weeks of age) at 5g per every 10litres of water offered to the birds. The result shows that the levels of administering these test ingredients were not deleterious to the broiler birds. The resultshows that there was no significant difference between the weights of liver administered different phytogenic additives. However, the highest value of (64.43g) was recorded in broilers administered ginger additives while the least (45.77g) was observed in broilers without phytogenic additives. Furthermore, the weight (99.23g) of gizzard was significant with black pepper but insignificant with addition of turmeric, ginger and red pepper. The least (74.27g) gizzard was observed in the group without phytogenic additives. The result also shows that phytogenic additives had no significant (p>0.05) effect on broilers heart. When the intestinal tissues were viewed under the microscope, it was observed that the tissues were not seriously damage or eroded, as most of the tissues were normal and where the integrity of tissues were eroded it mild.
