THE PHILIPPINE WATER BUFFALO
THE PHILIPPINE WATER BUFFALO
THE PHILIPPINE WATER BUFFALO
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It was noted that regardless of the stage of estrous cycle,<br />
all the experimental animals responded to PRID treatment<br />
as evidence by the progesterone profile. Upon the duration<br />
of PRID insertion, all animals maintained a level of<br />
progesterone, which is at the luteal stage (1.08 to 3.51 ng/<br />
ml). One day after PRID withdrawal, progesterone value<br />
declined to basal level (average of 0.55 ng/ml). These low<br />
levels were maintained until 7 days after PRID withdrawal<br />
for carabaos that did not become pregnant, and until 4<br />
days for those that<br />
became pregnant. In non-pregnant group, progesterone<br />
level became elevated 5 days after AI and the level declined<br />
17 days after AI. On the other hand, the pregnant group<br />
exhibited an elevated progesterone level, commencing the<br />
day after predetermined AI, and maintained it beyond 23<br />
days after AI. The conception rate at first service with the<br />
used of PRID to synchronize heat was 41% and could be<br />
increased up to 65% if the PRID treated animals that did<br />
not conceive will be closely monitored and inseminated<br />
three to four cycles after the PRID heat include service.<br />
These results indicate that PRID is also an effective heat<br />
synchronizing agents for caracows.<br />
Keywords: carabao cows, conception rate, estrus<br />
synchronization, plasma progesterone, progesterone<br />
releasing intravaginal device<br />
*Abstracts of Completed Researches 1981-1995. (1986).<br />
PCC-UPLB, College, Laguna. Also in Abstracts of Water<br />
Buffalo researches in the Philippines 1981-1995. 1996.<br />
PCC-DA. p. 57-58. Also in Annotated Bibliography on<br />
Philippine Biodiversity: Livestock and Poultry<br />
(Agrobiodiversity) 1949-1997, Carabaos. 2002. p. 300.<br />
R-32<br />
SPERM PRODUCTION OF <strong>PHILIPPINE</strong> CARABAOS<br />
AND CROSSBREED <strong>BUFFALO</strong>ES WITH OR<br />
WITHOUT ULTRASTRUCTURAL ALTERATION IN<br />
<strong>THE</strong> TESTES*<br />
O. M. Nuñeza, Ph.D. Student, IAS-CA, UPLB<br />
V. G. Momongan, Prof., IAS-CA, UPLB & Proj. Leader, PCRDC-PCARRD,<br />
UPLB<br />
S. S. Capitan, Assistant Professor, IAS-CA, UPLB<br />
This research was conducted to evaluate and compare the<br />
semen characteristics of Philippine carabao bulls, crossbred<br />
buffaloes with normal testicular morphology and crossbreds<br />
with ultrastructural alterations in the testes. Weekly<br />
ejaculates obtained for a duration of one month were<br />
assessed based on semen volume, initial motility, sperm<br />
concentration, percentage of live and dead spermatozoa<br />
and percent sperm abnormalities. Data were analyzed<br />
using analysis of variance (ANOVA) for split plot in<br />
REPRODUCTION<br />
completely randomized design (CRD). Crossbred buffaloes<br />
with testicular alterations were found to have inferior semen<br />
quality compared to Philippine carabaos and crossbred<br />
buffaloes without testicular alterations.<br />
Keywords: Philippine carabao, crossbred bulls, semen<br />
characteristics, testicular alterations<br />
* Phil. J. Vet. Anim Sci. 1992. 18(4):331-338. Also in<br />
Abstracts of Completed Researches 1981-1995. (1991).<br />
PCC-UPLB, College, Laguna. Also in Abstracts of Water<br />
Buffalo Researches in the Philippines 1981-1995. 1996.<br />
PCC-DA. p. 61-62. Also in Annotated Bibliography on<br />
Philippine Biodiversity: Livestock and Poultry<br />
(Agrobiodiversity) 1949-1997, Carabaos. 2002. p. 354.<br />
R-33<br />
MINERAL STATUS AND ONSET OF POST-PARTUM<br />
HEAT IN LACTATING <strong>PHILIPPINE</strong> CARABAOS<br />
UNDER LUCBAN CONDITION*<br />
A. R. Obsioma, University Researcher, PCRDC-PCARRD, UPLB<br />
R. M. Lapitan, Science Research Associate, PCRDC-PCARRD, UPLB<br />
A study was conducted to relate blood mineral status and<br />
onset of postpartum heat in 24 lactating Philippine carabaos.<br />
Blood samples were collected at 10-14 days interval for 5<br />
consecutive days. Samples were analyzed for mineral<br />
levels (P, Ca, Cu, Mn, Fe, and Zn) and for progesterone<br />
levels to monitor ovarian activity. Results showed that<br />
values of mineral levels were above the critical values set<br />
for cattle. Values obtained were also either comparable or<br />
higher compared to a previous study using those obtained<br />
in concentrate fed carabaos. Levels obtained were 7.4<br />
mg/100 mg, 10.64 mg/100 ml, 4.53 ppm, 0.162 ppm,<br />
0.352 ppm and 1.79 ppm for P, Ca, Fe, Cu, Mn, and Zn,<br />
respectively. Onset of postpartum heat started as early as<br />
39 days and as late as more than 150 days. The results<br />
suggested that under Lucban condition, mineral deficiency<br />
is nor a problem during months of August to December. In<br />
spite of the absence of the mineral deficiency among<br />
experimental animals, variations in the onset of postpartum<br />
heat were observed.<br />
Keywords: lactating carabao, Lucban, Quezon, plasma<br />
minerals, postpartum heat, progesteorne level<br />
*Abstract of Completed Researches 1981-1995. (1992).<br />
PCC-UPLB, College, Lagua. Also in Abstracts of Water<br />
Buffalo Researches in the Philippines 1981-1995. 1996.<br />
PCC-DA. p. 64. Also in PCC R & D Highlights 1994-<br />
1996. p. 13-14. Also in Annotated Bibliography on<br />
Philippine Biodiversity: Livestock and Poultry<br />
(Agrobiodiversity) 1949-1997, Carabaos. 2002. p. 383.<br />
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