Abstract:
Black Bengal goat is the national pride of Bangladesh. Ovary is the key female
reproductive organ of all the vertebrates. With the aim to study the ovarian
morphometry of Black Bengal goat, both right and left ovaries were collected
from the slaughter houses. For each of the specimens, gross parameters such as
right, left, corpus luteum (CL) present and absent group and evaluated on the
basis of weight (g), length (cm), width (cm), follicles aspirated and number and
state of cumulus-oocyte-complexes (COCs), normal COCs and abnormal
COCs, the effect of collection techniques on cumulus oocyte complexes
(COCs) of goat oocytes
There is no
significant differences were found in right and left ovaries. On the other hand
significantly higher weight [(1.30±0.30) vs (0.98±0.17) g] and width
[(1.08±0.24) vs (0.89±0.22) cm] were found in CL-present group than those of
CL-absent group of ovaries. The recovery rates of grade A (31.11%) and B
(22.41%) oocytes were higher than that of grade C (19.83%) and D (26.61%).
It was observed that, the total number of COCs per ovary as well as the number
of abnormal COCs/ovary were significantly higher (p<0.05) in slicing (3.28
and 1.44, respectively) and dissection (3.44 and 1.76, respectively) followed by
aspiration (3.20 and 0.84, respectively) technique. In contrast, the number of
normal COCs/ovary was significantly higher (p<0.01) in aspiration (2.36)
followed by slicing (1.84) and puncture (1.68) techniques. Periods as 2, 4, 6
and 8 hours yield 78%, 69%, 60% and 53% oocytes counts of good, fair, poor
and bad quality oocytes respectively. Yield of oocyte was highest in dissection
technique compared with aspiration and slicing technique but maximum
number of normal oocyte obtained from aspiration technique.
Description:
A Thesis
Submitted to the Faculty of Animal Science & Veterinary Medicine,
Sher-e-Bangla Agricultural University, Dhaka-1207,
in partial fulfillment of the requirements
for the degree of
MASTER OF SCIENCE (MS)
IN
ANIMAL SCIENCE
SEMESTER: JANUARY- JUNE, 2019
