Title: Studies on seasonal and sexual variation on gross morphology and biometry of the thyroid gland in local sheep (Ovis aries) of Kashmir

Authors: Neelofar Nabi, MA Baba, Taziyun, Kamal Sarma and Ajaz Quadir

Source: Ruminant Science (2017)-6(1):39-41.

Cite this reference as: Nabi Neelofar, Baba MA, Taziyun, Sarma Kamal and Quadir Ajaz (2017).Studies on seasonal and sexual variation on gross morphology and biometry of the thyroid gland in local sheep (Ovis aries) of Kashmir. Ruminant Science 6(1):39-41.

Abstract

The present study was conducted on thyroid gland of health male sheep. Six samples were collected during summer and six during autumn season. The paired gland was almond shaped and reddish brown in colour. It was related to parathyroid glands, jugular vein and its branches, vagus nerve, esophagus and trachea. The topographical features of the thyroid gland including position, color, blood and nerve supply in sheep were similar irrespective of season. Biometrical parameters (weight, length, width and thickness) were recorded for right lobe, left lobe and isthmus in male of summer and autumn season. Majority of parameters pertaining to biometry of the thyroid gland showed non-significant variations in both the seasons. However, the average contribution of thyroid gland to the body weight was higher in male sheep during summer season.

References

Bhardwaj RL, Rajesh  R, Virender  P and Kailash  T (2006). Comparative anatomy of thyroid gland of small ruminants. Indian Journal of Animal Sciences 76:46-47.

Cerny  H (2002). Veterinary Anatomy for Study and Practice. NOVIKO AS, Brno, p 528.

Choudhary OP and Doley PJ (2016). Histomorpho-logical and scanning electron microscopic studies of thyroid gland in Jamunapari goats. Indian Journal of Small Ruminants 23(1):120-122.

Dyce KM, Sack WO and Wensing CJG (2002). Textbook of Veterinary Anatomy. 3rd Edn, Elsevier India Private Limited. pp 213-215.

Evans J (1993). Miller’s Anatomy of the Dog. 3rd Edn, WB Saunders Company. pp 567-571.

Getty  R (2012). Sission and Grossman’s The Anatomy of Domestic Animals. WB Saunders Company. Philadelphia, USA.

Joshi S and Mathur R (2015). Gross anatomical studies on the thyroid gland of goat. Ruminant Science 4(2):153-156.

Joshi S and Mathur R (2016). Light microscopic studies on the thyroid gland of goats. Ruminant Science 5(1):25-28.

Karsch FJ, Dahi GE, Hachigian TM and Thrun LA (1995). Involvement of thyroid hormones in seasonal reproduction. Journal of Reproduction and Fertility 49:409-422.

Kausar R and Shahid RU (2006). Gross and microscopic anatomy of thyroid gland of one-humped camel (Camelus dromedarius). Pakistan Veterinary Journal 26:88-90.

Sarma K, Kalita SN and Devi J (2016). Gross and biometrical study on postnatal development of thyroid gland in Assam goat (Capra hircus). Ruminant Science 5(1):29-32.

Snedecor GW and Cochran WG (2004). Statistical Methods. 8th Edn, Oxford and IBH Pub Co, Kolkata.