Aliyu, M.A

This study was conducted with the aim of studying the variations by sex and genotype in morphometry of the Oropharyngeal Cavity in Nigerian indigenous chickens. Avian mouth and pharynx do not show any definite line of demarcation, but constitute a common Oropharyngeal Cavity. Generally, anatomical structures found in the dorsal wall of the oropharynx include the palate, choanal slit, and infundibulum, while structures in the ventral wall of the Oropharynx include a concave depression between the rami of the lower beak, laryngeal mound and glottis.

ABSTRACT: The present study was done to compare histological developmental features of the thyroid gland in Red Sokoto (RSG) and Sahel Goats (SG) during prenatal periods. A total of 90 fetuses and 60 postnatal heads and necks of the two breeds were used for the study.  Both periods were categorized into three age groups.