THE PHILIPPINE WATER BUFFALO

Keywords: caraheifers, chromic oxide-lignin ratio,
digestibility, voluntary intake
* Abstracts of Completed Researches. 1981-1986.
PCRDC-PCARRD, CLSU, Muñoz, Nueva Ecija. Also
in OED-PCC-DA Abstracts: Water Buffalo Researches
in the Philippines. 1981-1995. p. 27
F-58
DIGESTIBILITY AND VOLUNTARY FEED INTAKE
STUDIES OF GRAZING CARABAO UNDER
THEMEDA (THEMEDA TRIANDRA FORKS) RANGE
PASTURE. IV. DETERMINATION OF VOLUNTARY
INTAKE AND DIGESTIBILITY BY CHROMIC OXIDE
CHROMOGEN RATIO TECHNIQUE WITH
CARAHEIFERS DURING SUMMER*
B. H. Romulo, Instructor, Department of Animal Science, College of
Agriculture, Central Luzon State University
L. Constantino, Student, Department of Animal Science, College of
Agriculture, Central Luzon State University
D. L. Aquino, Science Research Assistant, Philippine Carabao Research
and Development Center, Philippine Council for Agriculture and Resources
Research Development, Central Luzon State University
G. T. Concepcion, Science Research Aide, Philippine Carabao Research
and Development Center, Philippine Council for Agriculture and Resources
Research Development, Central Luzon State University
A total of six caraheifers, two to three years old, with
body weights ranging from 280 to 297 kg were used to
determine the voluntary intake and digestibility of Themeda
during summer. The calculated mean of voluntary dry
matter intake was 3.78 ± 0.18% kg, equivalent to 1.31 ±
0.06% of the body weight. Digestion coefficient for crude
fiber (CF), crude protein (CP), nitrogen-free extract (NFE)
and ether extract (EE) were 40.61 ± 1.32, 56.58 ± 2.21,
17.00 ± 3.63, 52.41 ± 1.77 and 59. 61 ± 5.10%,
respectively. Total digestible nutrient was found to be
45.26 ± 1.56% and digestible energy was 356.08 ±
74.84 cal/gram.
Keywords: caraheifers, chromic oxide chromogen ratio,
digestibility. Voluntary feed intake
*Abstracts of Completed Researches. 1981-1986.
PCRDC-PCARRD, CLSU, Muñoz, Nueva Ecija. Also
in OED-PCC-DA Abstracts: Water Buffalo Researches in
the Philippines. 1981-1995. p. 27-28.
F-59
DETERMINATION OF VOLUNTARY DRY MATTER
INTAKE AND DIGESTIBILITY OF THEMEDA
(THEMEDA TRIANDRA FORSK) PASTURE BY
CHROMIC OXIDE-ACID INSOLUBLE ASH RATIO
TECHNIQUE ON CARACOWS (BUBALUS BUBALIS
LINN.)*
FEEDING AND NUTRITION
N. P. Rosete, Student, Department of Animal Science, College of Agriculture,
Central Luzon State University
S. P. Neric, Professor, Department of Animal Science, College of Agriculture,
Central Luzon State University
S. S. Bumagat, Instructor, Department of Animal Science, College of
Agriculture, Central Luzon State University
Ten heads of native caracows weighing 351 to 375 kg with
ages ranging from 3 to 4 years, were used in a grazingdigestibility
trial to determine the voluntary herbage dry
matter intake and digestibility of Themeda pasture by chromic
oxide-acid insoluble ash method. Animals were grazed in
the native pasture during the dry season from February to
May at the Philippine Carabao Research and Development
Center in Carranglan, Nueva Ecija. Laboratory analyses
were conducted at the analytical laboratory of the Central
Luzon State University. All animals before the start of the
actual experiment were subjected to a preliminary trial
lasting for seven (7) days and a collection period of seven
(7) days. Forages were obtained by the plucking method
and feces were sampled daily using the grab technique.
These were pooled and analyzed according to standard
procedure of AOAC (1970). Percent acid insoluble (AIA)
was determined according to Van Keulen and Young (1977).
Voluntary herbage dry matter intake and digestion coefficient
of crude protein, crude fiber, ether extract and nitrogen free
extract (NFE) were calculated according to Reid et al.
(1952). Proximate analysis indicated lower values of
crude protein and ash on forage samples compared to
feces (4.32% vs. 6.21% and 17.74% vs. 28.36%). Acid
insoluble ash contents in forage was 1.089 vs. 0.752
percent in fecal samples. Fecal output per head daily was
calculated as 3.23 kg. Voluntary dry matter intake as
percent of the body weight was 2.22 kg or 97.07 gram per
kilogram metabolic body size of the experimental animals.
Digestion coefficient of crude protein, crude fiber, ether
extract, nitrogen free extract based on percent AIA obtained
were 40.88, 69.61, 61.82 and 62.20 percent, respectively.
Total digestible nutrients calculated was 54.50% and
digestible dry matter was 59.98%. Values obtained in all
the parameters had small variations and patterns tend to
agree closely with results of earlier studies.
Keywords: caracows, chromic oxide-acid insoluble ash
method, themeda range pasture, voluntary intake
*Abstracts of Completed Researches. 1981-1986.
PCRDC-PCARRD, CLSU, Muñoz, Nueva Ecija. Also
in OED-PCC-DA Abstracts: Water Buffalo Researches in
the Philippines. 1981-1995. p. 139-140.
F-60
EFFECTS OF SOAKING RICE STRAW ON GROWTH
PERFORMANCE OF PHILIPPINE CARABAOS*
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