THE PHILIPPINE WATER BUFFALO
THE PHILIPPINE WATER BUFFALO
THE PHILIPPINE WATER BUFFALO
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ng/ml and dropped sharply at parturition time to 0.543 +<br />
0.157 ng/ml. Rectal palpation indicated that uterine horns<br />
returned to normal size and shape on day 33.15 + 2.64<br />
post-partum although the cervix became stabilized at a<br />
diameter of 2.68 + 0.09 cm on days 51.8 + 2.29 postpartum<br />
based on ovarian palpation. Post-partum estrus<br />
occurred on 101.0 + 17.5 and 116.1 + 19.9 days, as<br />
determined by a vasectomized bull and plasma progesterone<br />
level, respectively. Suckling tends to increase post-partum<br />
anestrus.<br />
Keywords: Philippine carabao cow, plasma progesterone,<br />
pregnancy, parturition, involution, postpartum ovarian<br />
activity.<br />
*Phil. J. Vet. Anim. Sci. 1985. 11(3&4):36 (Abstr.). Also<br />
in Abstracts of Completed Researches, 1981-1995. (1985).<br />
PCC-UPLB, College, Laguna. Also in Abstracts of Water<br />
Buffalo Researches in the Philippines 1981-1995. 1996.<br />
PCC-DA. p. 73. Also in Annotated Bibliography on<br />
Philippine Biodiversity: Livestock and Poultry<br />
(Agrobiodiversity) 1949-1997, Carabaos. 2002. p. 328.<br />
R-62<br />
BLOOD PLASMA PROGESTERONE PROFILE<br />
DURING PREGNANCY AND PARTURITION IN<br />
<strong>PHILIPPINE</strong> CARABAOS (Bubalus bubalis Linn.)*<br />
A. S. Sarabia, University Researcher, PCRDC-PCARRD, UPLB<br />
N. P. Roxas, Assistant Professor, IAS-CA, UPLB<br />
M. Singh, FAO-UNDP Consultant for PCRDC<br />
O. A. Palad, Associate Professor, IAS-CA, UPLB<br />
V. G. Momongan, Prof., IAS-CA, UPLB & Proj. Leader, PCRDC-PCARRD,<br />
UPLB<br />
Caracows examined had a mean plasma progesterone<br />
concentration of 0.17 + 0.05 ng/ml on the day of insemination<br />
(estrus), the level increasing to 2.90 + 0.56 ng/ml between<br />
days 36 and 42 of pregnancy. The concentration declined<br />
and remained fairly constant (2.20 + 0.31 ng/ml on days<br />
43-49 to 1.89 + 0.28 ng/ml on days 169-182) through out<br />
the duration of pregnancy, and decreased in value (1.47 +<br />
0.24 ng/ml on days 281-294) with the advance of pregnancy.<br />
However, the level increased from 0.97 + 0.17 ng/ml<br />
between day 1 and 7 pre-partum, and drastically dropped<br />
to 0.54 + 0.16 ng/ml on the day of parturition. The mean<br />
gestation period was 311.64 + 2.39 days (n=11). The<br />
progesterone level remains at basal values during early<br />
post-partum, which ranged from 0.001 to 0.08 ng/ml until<br />
day 29 to 35 post-partum.<br />
Keywords: gestation period, parturition, plasma<br />
progesterone, post-partum ovarian activity<br />
*Abstracts of Completed Researches 1981-1995. (1986).<br />
REPRODUCTION<br />
PCC-DA, UPLB, College, Laguna. Also in Abstracts of<br />
Water Buffalo Researches in the Philippines 1981-1995.<br />
1996. PCC-DA. p. 73. Also in Annotated Bibliography on<br />
Philippine Biodiversity: Livestock and Poultry<br />
(Agrobiodiversity) 1949-1997, Carabaos. 2002. p. 329.<br />
R-63<br />
FOLLICULAR DYNAMICS IN <strong>PHILIPPINE</strong> <strong>WATER</strong><br />
<strong>BUFFALO</strong> (Bubalus bubalis)*<br />
O. F. Smith, Ph.D. Student, IGS, CLSU<br />
P. G. Duran, Science Research Specialist, PCRDC-PCARRD, CLSU<br />
H. V. Venturina, Science Research Specialist, PCRDC-PCARRD, CLSU<br />
F. A. Adriano, Science Research Specialist, PCRDC-PCARRD, CLSU<br />
L. C. Cruz, Prof., DAS-CA, CLSU and Project Leader, PCRDC-PCARRD,<br />
CLSU<br />
The results showed that the mean number of small-sized<br />
follicles (103 mm) was greater (P