Research Article: Changes in the Seminiferous Epithelium of the Testes during Postnatal Development in Assam Goat

Date Published: February 14, 2012

Publisher: Hindawi Publishing Corporation

Author(s): Kamal Sarma, J. Devi.


The present work is conducted to elucidate the postnatal development of the seminiferous epithelium of the testes of the Assam goats from 0 day to 10 months of age. A total of eighteen Assam goats divided into six age groups, namely, group-I (0-day), group-II (2 months), group-III (4 months), group-IV (6 months), group-V (8 months), and group-VI (10 months), consisting of 3 animals in each group were used in this study. The seminiferous tubules did not have lumina up to the age of 2 months, hence called the sex cords, and these contained centrally placed gonocytes and peripherally located sustentacular cells. Initiation of spermatogenesis started in 4-month old kids. Luminization process was completed by 6 months of age with all the seminiferous tubuyes having well-developed lumina at this age. These seminiferous tubules contained all the spermatogenic cells of the adult testis. Onset of puberty was observed to be established at 6 months of age in the Assam goats as evidenced by presence of spermatozoa adhering to the adluminal border of the Sertoli cells as well as in the tubular lumen. The histomorphology of various cells of the seminiferous epithelium has been described.

Partial Text

India possesses 122.92 millions of goats of which 29.06 lacs are found in Assam [1]. Goat rearing has tremendous potential in the northeastern states particularly among the small and marginal farmers and landless laborers because of very low initial investment and adequate financial returns. More than 85 percent of the population in this region is nonvegetarian, and chevon is preferred by all as it has no religious taboo.

A total of 18 male Assam goats varying in age from 0-day to 10 months were used in the present study. The animals were divided into six age groups, namely group-I (0-day), group-II (2 months), group-III (4 months), group-IV (6 months), group-V (8 months), and group-VI (10 months) consisting of three animals in each group. The age of the goats were estimated from birth records. Each animal was weighed using Spring Balance to record the body weight. The animals were sedated by intramuscular injection of Siquil @ 1 mg/Kg body weight and subsequently anaesthetized by intravenous injection of Intravel Sodium @ 15 mg/Kg body weight [7]. After induction of proper level of anesthesia, the animals were sacrificed.