Transmission electron microscopic studies of eosinophil of horse, dog, pig and rabbit were carried out on six apparently healthy animals of each species. Ultrastructurally the eosinophils appeared round to oval in shape with few, short and narrow cytoplasmic processes in horse, oval with numerous long and wide cytoplasmic processes in dog and round with thin and broad small cytoplasmic processes in pig. While in rabbit it was round to oval in shape with long cytoplasmic processes. The nucleus had two to three lobes in all the animals. In all the four species it was observed that the heterochromatin was concentrated towards the periphery. Granules were mostly oval in outline and more or less similar in shape and size in horse while in dog the granules were rounded in shape and medium sized. In pig the double membrane bound cytoplasmic granules were roughly rounded to oval in shape and distributed throughout the cytoplasm. The granules in rabbit were mostly oval in outline and more or less similar in dimension. Cell organelles were clearly visible in the cytoplasm of horse while poorly visible in dog, pig and rabbit.

<p>The present study was undertaken to explore the immunohistochemical localisation of TRPV6 calcium channels in rabbit gut epithelium that are actively involved in calcium absorption. To undertake the research, twelve apparently healthy adult female rabbits with a body weight between 1.0 to 1.5 kg were procured, acclimatised and divided into two groups: control and test. Both groups were kept on same feed along with exogenous calcium supplementation in test group animals only. The serum calcium level revealed that normally a high value of serum calcium is maintained in the rabbit as compared to other mammals, thus indicating that the homeostatic mechanism might be poorly developed. Immunohistochemistry and reverse transcription polymerase chain reaction analysis revealed that the caecum was the site of maximum calcium absorption in rabbit, followed by the duodenum and jejunum. The expression pattern of TRPV6 protein/mRNA was weaker in test group animals than in the control group, indicating that the channel was functional in low calcium concentration in the gut.</p>

This study involved morphologic and morphometric postnatal development on thirty spleens of the Chotanagpuri sheep. The spleen was collected and biometrical parameters were recorded. The spleen was found high in the abdominal cavity adjacent to the vertebral column in the region of 10-13 th ribs in all age group. The colour of spleen varied with advancement of age which was creamish in early age and gradually became reddish brown. The shape of the spleen was roughly triangular in all age groups. The mean weight, maximum length, maximum width, length of dorsal, anterior and posterior borders and thickness of dorsal border at anterior, middle and posterior ends, thickness of anterior border at dorsal and middle ends, thickness of posterior border at dorsal end of spleen and distance of hilus from dorsoanterior and ventro-anterior angle significantly increased among different groups of sheep with advancement of age. However, there was no significant difference in thickness of anterior border at ventral end, thickness of posterior border at middle and ventral ends.

No abstract

Female rabbits from the age of 9 weeks till age of maturity were reared in two separate groups under long (16L: 8D) and short (12L: 12D) photoperiods. Does reared under long photoperiod showed increased body weight and ovary weight body weight ratio as compared to does reared under short photoperiod. At 15 weeks of age Graafian follicles appeared for the first time in long photoperiod group while the same appeared in the short photoperiod group at 19 weeks of age. At prepubertal and pubertal age the serum concentration of FSH and LH were more in long photoperiod animals as compared to those of short photoperiod animals.