Comparative Histomorphologic Studies of the Heart in Three Mammalian Species: Rabbits (Oryctolagus guniculus), Wistar Rats (Rattus norvegicus) and African Giant Rats (Cricetomys gambianus)

Augustine Ibegbu,, Buhari Yahaya, Paul Adubazi, Sunday Musa
2014 Journal of Veterinary Anatomy  
Comparative morphologic, morphometric and histological studies was carried out on adult male hearts of the three mamalian species namely the Rabbit (Oryctolagus cuniculus), Wistar rats (Rattus norvegicus) and African giant rats (Cricetomys gambianus). Five animals from each species were weighed, lightly anasthetized with chloroform and humanely sarcrificed. The thoracic cage was carefully opened and the hearts were removed, morphologically observed andfixed in Bouins fluid. The tissues were
more » ... he tissues were processed for histological studies and stained using Haematoxylin and eosin (H & E) and Rafferty's stain. The hearts were physically observed to be reddish in colour and pear shaped. The heart of the three mamalian species showed the aorta, superior and inferior vena cava and the pulmunary vessels similar to that of the humans. The mean total body weight of the African gaint rats, Rabbits and Wistar rats are 1.167±0.153 kg, 1.233±0.252 kg and 20.333±5.774 g respectively, which showed a significant difference (P≤ 0.01) between the body weight of the African gaint rats, Rabbits and the Wistar rats. The mean weight of the hearts of African giant rats, Rabbits and Wistar rats are 4.367±1.620, 3.306±0.115, 0.766±0.164 gms respectively which showed a significant difference (P≤0.01) between the hearts of African gaint rats, Rabbits and Wistar rat. Histologically, the atrial and ventricular parts of the heart of the three species showed great similarities in
doi:10.21608/jva.2014.44815 fatcat:krgieom3yfhozb5j3axswzifuu