Scanning Electron Microscopic Study of the Developing Vallate Papillaein the Korean Native Goat (Capra hircus)

Abstract

The purpose of the present study was to investigate the morphological characteristics of the developing vallate papillae (VP) of Korean native goats using scanning electron microscopy. In prenatal development of the VP, primordia of the VP were observed and the moat was shallowly spread in 60-day-old fetuses. The moat of the vallate papillae was shallowly spread and still undifferentiated in 90-day-old fetuses. The trench wall of the moat of the VP was well developed in 120-day-old fetuses. In neonates, the moat of the VP was more widely and deeply engraved and VP were developed as completely as those of adults. In postnatal development, VP were observed to have continually increased in size with slight morphological changes until 90-days after birth. Taste pores of the VP were shaped like flower leaves in 120-days after birth. The microridges and microplicaes were well developed on the epithelial surface of the VP in goats ranging from 120-day-old fetuses to 120-day-old postnatal animals. These results suppose that the sensing ability for gestation of VP was already well developed by the time of its birth and VP were differentiated into a variety of different shape and size during development.

Functional and Comparative Study of the Circumvallate Papillae in Four Species of Mammals

“…In SEM, each one was encircled by a prominent gustatory moat and a thick annular pad. These observations were in accordance toKorean native goat, 72 Jamunapari goats 73 and Markhoz Iranian goat. 74 Bargmann 1981 75 explained the presence of ridges, grooves and depressions on CVP surface along with the annular pad as to maintain the saliva thus make certain of more contact with the taste buds.…”