MORPHOMETRIC EVALUATION OF CERVIX AND ITS INFLUENCE ON INTRACERVICAL PASSAGE OF INSEMINATION PIPETTE IN NATIVE SHEEP
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Date
2017-06
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SRI VENKATESWARA VETERINARY UNIVERSITY TIRUPATI – 517 502. (A.P) INDIA
Abstract
ABSTRACT:
Morphometric evaluation of native sheep genitalia from slaughter
house was carried out and biometry revealed a significant difference
(P<0.01) was observed between the size of ovaries and uterus in ewe lambs
and adult ewes where as no significant difference (P>0.05) was observed in
these parameters between the adult ewes during follicular and luteal
phases. The mean length (cm) and diameter (cm) of cervix of ewe lambs, adult
ewes during follicular and luteal phases in present study were 2.94±0.13
and 0.81±0.05; 5.23±0.11 and 1.04±0.03 and 4.83±0.12 and 0.9±0.03 cm,
respectively. The predominant type of external os in ewe lambs was papilla,
while in adult ewes it was rose. The mean depth of penetration (cm) and
number of cervical folds recorded in ewe lambs, adult ewes during follicular
and luteal phases were 0.75±0.03, 3.10±0.21 and 0.87±0.05 and 3.30±0.12,
3.92±0.07 and 4.00±0.00, respectively. The occurence of grade 1 cervix was
more in ewe lambs and adult ewes with least occurence of grade 3 while the
occurence of grade 2 was intermediate with a similar trend for average depth
of penetration for cervix. In the present study the measurements of the cervical moulds of ewe
lambs and adult ewes revealed a significant difference (P<0.01) in the length
(cm), weight (gm), number of folds, height of fold, diameter of fold (cm),
internal diameter of fold (cm) and distance from os to folds (cm) between the
ewe lambs and adult ewes. From the current study it was concluded that the alignment of the
second or third cervical ring, in relation to the first ring was the principal
determinant of depth of penetration and the major impediment to
transcervical AI. Thus, it was opined that application of transcervical AI and
ET could be practically possible at ages greater than 4 years, or at 3-4 years
of age.
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