THE PHILIPPINE WATER BUFFALO
THE PHILIPPINE WATER BUFFALO
THE PHILIPPINE WATER BUFFALO
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cervical cyst, pyometra and ovarian hematoma. No<br />
correlation between these histopathological disorders and<br />
that of infertility was done since no breeding history can be<br />
obtained. It is presumed in this study however that the<br />
animals where the specimens used came from were<br />
slaughtered due to unproductiveness. Nevertheless, it was<br />
found in this study and in previous studies that parovarian<br />
cyst does not affect the fertility of the animals and that cystic<br />
corpora lutea are known to occur in normally fertile animals.<br />
Others may cause infertility while cervicitis, cystic glandular<br />
hyperplasia, uterine tumors and generalized adhesion may<br />
cause infertility if such conditions are extensive.<br />
Keywords: Philippine carabao, non-pregnant, internal<br />
reproductive organ, histopathological disorders<br />
Undergraduate Thesis. 1979. CVM-UP, Diliman, Quezon<br />
City. 44 p.<br />
R-55<br />
EARLY PREGNANCY DIAGNOSIS IN <strong>THE</strong><br />
<strong>PHILIPPINE</strong> CARABAOS*<br />
N. P. Roxas, Assistant Professor, IAS-CA, UPLB<br />
V. G. Momongan, Prof., IAS-CA, UPLB & Proj. Leader, PCRDC-PCARRD,<br />
UPLB<br />
Milk sample from twelve suckled carabao cows, 6 to 10<br />
years of age, were used in the study to assess the<br />
effectiveness of measuring progesterone concentration at<br />
20 to 24 days post–breeding in the diagnosis of early<br />
pregnancy and non-pregnancy of inseminated post-partum<br />
Philippine carabaos. Direct radioimmunoassay (RIA) was<br />
carried out and progesterone values obtained were used to<br />
classify the pregnant from non-pregnant animals. The<br />
early pregnancy determination using milk progesterone<br />
level indicated the highest accuracy (83%) of positive<br />
diagnosis (non-pregnant) on days 22 to 24 while in the<br />
negative diagnosis (non-pregnant), 100% accuracy was<br />
attained on days 24 post-breeding. In order to obtain the<br />
best result, it is recommended that the test should be<br />
performed in carabao cows with known breeding rates.<br />
Keywords: pregnancy diagnosis, Philippine carabao,<br />
milk progesterone, radioimmunoassay<br />
*Phil. Agric. 1989. 72(2):155-160. Also in Abstract of<br />
Water Buffalo Researches in the Philippines. 1981-1995.<br />
1996. PCC-DA. p. 69-70. Also in Annotated Bibliography<br />
on Philippine Biodiversity: Livestock and Poultry<br />
(Agrobiodiversity) 1949-1997, Carabaos. 2002. p. 263.<br />
R-56<br />
MILK PROGESTERONE PROFILE AND OVARIAN<br />
ACTIVITY DURING POSTPARTUM PERIOD IN<br />
84<br />
ABSTRACT OF RESEARCHES ON<br />
<strong>THE</strong> <strong>PHILIPPINE</strong> <strong>WATER</strong> <strong>BUFFALO</strong><br />
LACTATING <strong>PHILIPPINE</strong> CARABAOS*<br />
N. P. Roxas, Assistant Professor, IAS-CA, UPLB<br />
V. G. Momongan, Prof., IAS-CA, UPLB & Proj. Leader, PCRCD-PCARRD,<br />
UPLB<br />
M. Singh, FAO-UNDP Consultant for PCRDC<br />
O. A. Palad, Associate Professor, IAS-CA, UPLB<br />
Postpartum ovarian activity was studied by evaluating milk<br />
progesterone levels using rectal palpation in determining<br />
cyclicity and acyclicity (anestrus) in 12 suckled caracows<br />
during post-partum period. The onset of follicular development<br />
based on rectal palpation occurred 48.42 + 6.33 days (ranging<br />
from 25 to 96 days) after calving but the first postpartum<br />
estrous cycle did not start until after 95.58 + 22.9 days<br />
(ranging from 33 to 324 days) post-partum based on milk<br />
progesterone concentration. On the other hand, detection of<br />
first post-partum estrus by a vasectomized bull was observed<br />
at 134.92 + 19.95 days (ranging from 68 to 324 days) postpartum.<br />
Eighty-three percent of the animals exhibited ovarian<br />
activity as indicated by an increase in milk progesterone<br />
47.20 + 11.45 days earlier than estrus detection using a bull.<br />
This indicates that onset of ovarian activity precedes the first<br />
behavioral estrus in post-partum buffaloes by at least one<br />
cycle length. Based on progesterone elevation (>3 ng/ml),<br />
50% of the animals resumed ovarian activity before 60<br />
days post-partum. By day 100 post-partum, about 75%<br />
had cycling ovaries. Post-partum anestrus in three other<br />
animals (25%) was due to failure in the resumption of ovarian<br />
activity as indicated by the basal levels of milk progesterone<br />
(