Kamal Sarma

Micrometrical, Histological and Histochemical Studies on the Seminal Vesicles of Bakerwali Goat ( Kangani )

The seminal vesicles glands of adult (29) and senile (6) Bakerwali goat were utilized for recording micrometrical and histological parameters. The seminal vesicles were paired lobular glands with distinct lobulations. Histologically glands were compact compound tubulo-alveolar with lobulated surface. The glands were divided into lobes with a fibro muscular capsule. The glandular parenchyma consisted of alveoli, tubules and ducts which were lined with pseudostratified columnar epithelium. In the epithelium three types of cell had been identified viz A, B, C. The central collecting ducts of each lobule was lined with pseudostratified columnar epithelium. Moderate cholesterol was observed at apical and basal border of alveoli and tubules. The secretion and apical blebs exhibited mild to moderate reaction for cholesterol. Many blood vessels, nerves and parasympathetic ganglia were seen in tunica adventitia.

Morphometrical changes of the seminiferous tubules and Leydig cells in Assam goats (Capra hircus) from birth to 10 months

ABSTRACT There is a definite pattern of the growth of seminiferous tubules at different post natal ages in mammals. The present work involves recording the changes of the seminiferous tubules, the cellular components of the seminiferous epithelium and the Leydig cells in male Assam goats. Different micrometrical parameters of the seminiferous tubules were found to increase with the increase in age of the male goats and they showed a significant (P < .05) increase between the age of 6 and 8 months. Also, the micrometrical parameters of different spermatogenic cells showed a significant (P < .05) increase between 6- and 8-month-old goats. The Leydig cells could be marked in the intertubular tissue right from birth. Various micrometrical parameters of the Leydig cells were found to increase with the advancement of age of the male goats. The nuclear diameter of the Leydig cells did not show a definite pattern during their postnatal growth. The other micrometrical measurements of the Leydig cells denoted their highest values at the age of 8 months.

Postnatal Gross Morphological and Histoenzymic Studies on the Thyroid Gland of Assam Goat

The thyroid gland was composed of right and left lateral lobes connected by a narrow isthmus. The location of the isthmus over the trachea varied in male goats which ranged from 4th to 9th tracheal rings. Various biometrical parameters viz. length, width, thickness and weight of the thyroid gland showed a highly significant (P<0.01) increase between various age groups as well as between the thyroids of right and left sides of the body in Assam goats. Accessory thyroid tissue was not observed in any of the male goats. Different biometrical parameters of the isthmus showed an increasing trend with the advancement of age and the variations were found to be highly significant (P<0.01) between various age groups, except in respect of their weight. The activity of LDH in the follicular epithelium of the thyroid gland varied from weak to intense from 4 to 10 months of age (groupsIII to VI). However, MDH showed a strong activity in these cells at birth (group-I), which was reduced to moderate in 4 month old kids (group-III) and again elevated in older goats. The enzymic activity of G-6-PDH was variable from mild to moderate in the male goats. The intertubular stroma of the thyroid gland showed no activity for MDH and G-6-PDH in all the age groups. But a mild activity of LDH enzyme was seen in goats from 6 month of age (group-IV) onwards.

Post Natal Changes in the Concentration of certain Serum Biochemicals, Metabolic and Steroid Hormones in Male Assam Goats (Capra hircus) from Birth to Ten Months of Age

The mean concentration of blood glucose showed an increasing pattern with advancing age in the male Assam goats ranging from 39.32 ± 0.12 mg percent at birth to 51.92 ± 0.05 mg percent in 10 months old bucks. Serum cholesterol concentration showed a declining trend that varied from 108.93 ± 1.35 mg percent at birth to 62.23 ± 0.66 mg percent in 10 months old goats. Similarly, the levels of serum total protein increased from 3.96 ± 1.35 to 8.16 ± 0.02 g percent at birth and at 10 month of age, respectively. The serum thyroid hormones showed a declining trend in the male Assam goats with increasing age. The mean concentrations of Triiodothyronine (T3) and Thyroxine (T4) were recorded as 1.65 ± 0.03 and 114.38 ± 0.62 ng/ml at birth and 0.81 ± 0.01 and 24.47 ± 0.31 ng/ml at 10 months of age respectively. On the other hand, serum concentrations of testosterone hormone raised from 0.11 ± 0.01 ng/ml in 2 months old kids to 1.13 ± 0.01 ng/ml in the goats at 10 month of age. Testosterone could not be estimated in the serum of day-old kids because the level was too low to measure. Serum concentrations of all the hormones showed a highly significant (P<0.01) variation between different age groups under study.

Gross and Morphometrical Studies on Mandible of Civet Cat (Viverricula indica)

The small Indian civet (Viverricula indica) is a civet native to South and Southeast Asia. It is listed as Least Concern on the IUCN (International Union for Conservation of Nature and Natural Resources) Red List because of its widespread distribution, widespread habitat use and healthy populations living in agricultural and secondary landscapes of many range states (Choudhury et al., 2015). Dorsal crest and absence of long black hairs distinguish it from the large civet. It is a smaller animal with a body length of 3 ft, a tail length of 1 ft and weighs 6-8 lbs. the general colour varies from brownish or olive grey to light grey. There are longitudinal dark stripes and rows of spots International Journal of Current Microbiology and Applied Sciences ISSN: 2319-7706 Volume 7 Number 10 (2018) Journal homepage: http://www.ijcmas.com

Histomorphological Development of Lingual Taste Buds in Goat (Capra hircus)

The present study was conducted on the tongue of 18 goat foeti, divided into 3 prenatal age groups viz., group 1 ( 100 days of gestation) containing 6 foeti in each group, to assess sequential events in the development of taste buds. The first appearance of primitive taste buds was observed on the apical surface of circumvallate and fungiform papillae in 93 days old goat foetus (CRL = 20.6 cm). The fungiform papillae located on the apex and body region of tongue were devoid of any taste buds. At 120 days of gestation (CRL = 31.1 cm), the taste buds were ovoid in shape and contained elongated or spindle shaped cells. The taste pores were apparent in taste buds at 146 days of gestation (CRL= 35.5 cm). Themeannumberoftaste buds in circumvallate papillae in this group was 2.0±0.36. The mean number of taste buds in fungiform and circumvallate papillae in tongue of goat foeti in group III was 1.83±0.3 and 5.5±1.08, respectively. A significant increase in the number of taste buds was observed in circumvallate papillae between group II and III.