THE PHILIPPINE WATER BUFFALO
THE PHILIPPINE WATER BUFFALO
THE PHILIPPINE WATER BUFFALO
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tract and ovaries, there was no significant difference<br />
(P>0.05) among breedtypes indicating that size and weight<br />
of the animal at puberty had no bearing on the development<br />
of the reproductive system. At pre-pubertal and follicular<br />
stages, the plasma progesterone concentration was below<br />
0.5 ng/ml. As sexual maturity was attained, the plasma<br />
progesterone level subsequently increased, as the corpus<br />
luteum {C} was formed after ovulation. The mean plasma<br />
progesterone concentrations at first luteal stage were 2.68<br />
+ 1.16 ng/ml for the PC, and 2.5 + 1.03 ng/ml and 2.32 +<br />
0.93 ng/ml for PM and PR crossbreeds, respectively.<br />
Breedtypes did not differ in their post-partum reproductive<br />
performance with respect to uterine and cervix involutions,<br />
ovarian activity, behavior estrus, service period and calving<br />
interval.<br />
Keywords: Philippine carabao, crossbreed, confinement,<br />
puberty, progesterone concentration,<br />
*Proceedings of the PSAS at the 32 nd Annual Convention,<br />
PICC, October 26-27, 1995. p. 245-260. Also in PCC R<br />
& D Highlights 1994-1996. 1997. p. 14-16. Also in Abstracts<br />
of Water Buffalo Researches in the Philippines 1981-1995.<br />
1996. PCC-DA. p. 74. Also in Annotated Bibliography on<br />
Philippine Biodiversity: Livestock and Poultry<br />
(Agrobiodiversity) 1949-1997, Carabaos. 2002. p. 285.<br />
R-60<br />
POST-PARTUM UTERINE INVOLUTION AND<br />
OVARIAN ACTIVITY IN <strong>PHILIPPINE</strong> CARABAO<br />
COWS*<br />
A. S. Sarabia, Science Research Specialist, PCRDC-PCARRD, UPLB<br />
O. A. Palad, Associate Professor, IAS-CA, UPLB<br />
V. G. Momongan, Prof., IAS-CA, UPLB & Proj. Leader, PCRDC-PCARRD,<br />
UPLB<br />
Sixty-four post partum suckled carabao-cows, five to ten<br />
years old, which calved between January, 1983 and<br />
December 1986 were used in the study to establish the<br />
post-partum uterine involution and resumption of ovarian<br />
activity so that recommendations can be made with regards<br />
to subsequent breeding of carabaos after calving to reduce<br />
service period. Results of the study indicated that uterine<br />
and cervical involution in female carabao-cow was<br />
completed on day 50.33 + 11.77 post-partum. Based on<br />
this observation, carabao-cow could be bred as early as<br />
55 days post-partum provided it shows cyclicity and nothing<br />
abnormal is detected in its reproductive organs by rectal<br />
palpation. However, the first post-partum estrus did not<br />
come until after 133.32 + 78.92 days. Findings of rectal<br />
palpation showed that of the 64 pregnancies, 59% was<br />
maintained in the left horn while 41% was in the right horn.<br />
The gestation period in carabao-cows averaged 316.94 +<br />
86<br />
ABSTRACT OF RESEARCHES ON<br />
<strong>THE</strong> <strong>PHILIPPINE</strong> <strong>WATER</strong> <strong>BUFFALO</strong><br />
8.99 days. The service period or the duration from the time<br />
of parturation until conception was classified into (a) early<br />
(between 60-150 days); (b) medium (151-240 days); and<br />
(c) late (241 days above). It was observed that more than<br />
50% of the experimental carabaos fall under the late service<br />
period category. The overall calving interval or the duration<br />
between two consecutive calvings averaged 627.84 +<br />
190.77 days or 1.72 + 0.52 years. The results indicated<br />
that the return of the reproductive tract of carabao-cows to<br />
normal non-pregnant condition was longer than in the other<br />
buffalo breeds reported. Furthermore, the results of other<br />
reproductive parameters showed the reproductive efficiency<br />
of the female Philippine carabao. This implies that there<br />
are a lot more to be done to improve the reproductive<br />
performance of the animal, particularly the shortening of the<br />
service period or the early induction of the post-partum<br />
ovarian activity.<br />
Keywords: calving interval, gestation period, post-partum<br />
ovarian activity, service period, uterine and cervical<br />
involution<br />
*Abstract of Completed Researches 1981-1995. (1985).<br />
PCC-DA, UPLB, College, Laguna. Also in Phil. J. Vet.<br />
Anim. Sci. 1985. 11 (3 & 4): 37 (Abstr.). Also in Abstracts<br />
of Water Buffalo Researches in the Philippines. 1981-1995.<br />
1996. PCC-DA. p. 72-73. Also in Annotated Bibliography<br />
on Philippine Biodiversity: Livestock and Poultry<br />
(Agrobiodiversity) 1949 - 1997, Carabaos. 2002. p. 326.<br />
R-61<br />
BLOOD PLASMA PROGESTERONE PROFILES<br />
DURING PREGNANCY, PARTURITION AND POST-<br />
PARTUM IN <strong>PHILIPPINE</strong> CARABAO COWS (Bubalus<br />
bubalis Linn.)*<br />
A. S. Sarabia, University Researcher, PCRDC-PCARRD, UPLB<br />
N. P. Roxas, Assistant Professor, IAS-CA, UPLB<br />
O. A. Palad, Associate Professor, IAS-CA, UPLB<br />
M. Singh, FAO-UNDP Consultant for PCRDC<br />
V. G. Momongan, Prof., IAS-CA, UPLB & Proj. Leader, PCRDC-PCARRD,<br />
UPLB<br />
Studies were conducted to establish the plasma<br />
progesterone levels in relation to pregnancy, parturation<br />
and post-partum in thirteen pregnant and twenty post-partum<br />
carabao cows in confinement. Both plasma progesterone<br />
and rectal palpation were utilized to determine post-partum<br />
ovarian changes. The result indicated that plasma<br />
progesterone was very low at the time of insemination<br />
(1.45 + 0.145 ng/ml). The value gradually increased<br />
above 2.07 + 0.25 ng/ml on the third trimester of pregnancy<br />
(days 183-320). However, at about 15 days pre-partum,<br />
plasma progesterone increased to a peak of 2.590 + 0.906