13-Title: Studies on gross morphological development of the tongue in goat foetii (Capra hircus)
Authors: Yousuf Dar, Kamal Sarma and Jonali Devi
Source: Ruminant Science (2013)-2(2):175-178.
How to cite this manuscript: Dar Yousuf, Sarma Kamal and Devi Jonali (2013). Studies on gross morphological development of the tongue in goat foetii (Capra hircus). Ruminant Science 2(2):175-178.
The present study was conducted on the tongue of 18 goat foetii divided into three prenatal age groups based on their estimated ages viz. Group 1 (below 50 days of gestation), Group 2 (between 50-100 days of gestation) and Group 3 (above 100 days of gestation up to full term) containing 6 number of foetii in each group. The tongues were disected out to study the sequential events in regard to gross morphological development of the same. In group I, the tongue of goat foetii was elongated in antero- posterior direction with a thin apex. In group II, the tongue was comparatively large and with further progression of age in group III, the tongue became thicker and more elongated. The apex was thin, narrow and pointed with sharp borders and formed the free part of tongue in group I. With the progression of age it became thicker with rounded borders in group II and group III. The root had smooth surface and sloped caudoventrally in the foetii of group I. In 40 to 49 days old foetiii (CRL= 2.40 to 5.9 cm), the transverse ridges of hard palate were visible on the dorsum linguae of the body and tip. A median groove was evident which extended upto future torus linguae. Filliform, fungiform, vallate, lenticular and conical papillae were not seen. In 80 to 83 day old foetii (CRL= 15.3cm to 20.6 cm) the tongue appeared rough indicating intiation of formation of filliform papillae. Initiation of formation of vallate papillae were noticed on the developing torus linguae. In 146 day old foetus filliform papillae were distributed all over the tongue. Button like fungiform papillae were distributed at the tip on dorsal as well as lateral edges. Torus linguae was well developed with well developed vallate papillae 7 on right side and 5 on left side.
Dhingra LD and Barnwal AK (1979). Gross anatomical studies in the tongue of Indian buffalo (Bubalus bubalis). HAU Journal of Research 9:63-68.
Dyce KM, Sack WO and Weinsing CJG (1996). Text Book of Veterinary Anatomy. 2nd Edn, WB Saunders Co, Philadelphia.
Getty R (1975). The Anatomy of Domestic Animals. 5th Edn, WB Saunders Co, Philadelphia, p 1583.
Habel RE (1975). Sisson and Grossman’s The Anatomy of the Domestic Animals. Eds: R Getty, Vol 1. 5th Edn, WB Saunders Co, Philadelphia, pp 861-915.
Labh PN and Mitra NL (1969). A comparative histological study of mammalian tongue. Journal of Anatomical Society of India 16:106-109.
Mack A, Singh A, Gilroy C and Ireland W (1997). Porcine lingual taste buds: A quantitative study. Anatomical Record 247:33-37.
Parmar ML, Malik MR and Taluja JS (1999). Morphology of tongue in goat foetuses. Indian Journal of Animal Science 69:79-81.
Prakash P and Rao GS (1980). Anatomical and neurohistological studies on the tongue of Indian buffalo (Bubalus bubalus). Acta Anatomica 107(4):373-83.
Qayyum MA and Beg MA (1975). Anatomical and neurohistological observations on the tongue of Indian goat. Acta Anatomica 93:554-567.
Reece WO (2004). Physiology of Domestic Animals. 12th Edn, Williams and Wilkins, USA, p 502.
Sarma K, Goswami RN, Kalita SN, Baishya G and Devi J (2003). Morphogenesis of tongue in cross bred pig foetuses. Indian Journal of Animal Science 73:1029-30.
Scala G, Corona M, Persella A, Girolamo P, Vittoria A, Scala F and Pelagalli GV (2005). The innervation of the fetal buffalo tongue (Bubalus bubalis). Anatomia, Histologia, Embryologia 29:203-72.
Singh Y, Sharma DN and Dhingra LD (1979). Morphogenesis of the testis in goats. Indian Journal of Animal Sciences 49:925-931.
Sisson S and Grossman JD (1975). The Anatomy of Domestic Mammals. 4th Edn, WB Saunders Co, Philadelphia, pp 558-563.
Verma D (2008). Gross and hitomorphological studies on prenatal development of tongue in buffalo (Bubalus bubalis). MVSc thesis submitted to GADVASU, Ludhiana (Punjab).
Yamane A (2005). Embryonic and postnatal development of masticatory and tongue muscles. Cell Tissue Research 322:183-189.