Thirteen Philippine carabao bulls and 35 crossbred male buffaloes with ages three years and above were used in the study. Testicular biopsy was used to get tissue samples from the experimental animals. A JEOL transmission electron microscope was used to observe the ultrastructure of spermatogenetic cells. Incidence of ultrastructural alterations were analyzed by means of Fisher exact probability test. Twenty-four percent (24%) of crossbred buffaloes had spermatogenic cell alterations while a significant 40% (P
methods. The diameter of the seminiferous tubules increased with age, the increase being abrupt at 10½ months of age, then became more or less stabilized at 25 months of age. Intratubular cells remained primodial cells in 1½ to 4½ months old animals and then these gradually differentiated to spermatogonia in 8 months old animals which could indicate the start of spermatogenesis. Lumen formation manifested its first clear-cut appearance in 15 months old animals. With advance in age, the lumina also increased in size. The interstitial cells were most numerous in 1½ month old carabull testes and decreases in number as the animal grew older until 8 months of age. Regeneration of the interstitial cells occurred when the animals approached pre-pubertal stage at 10½ months of age. Keywords: carabulls, interstitial cells, post-natal development, pre-pubertal stage, seminferous tubules, testes *Abstracts of Completed Researches (1983), PCRDC- PCARRD, UPLB. Also in PCC-OED, DA Abstracts: Water Buffalo Researches in the Philippines 1981-1995 (1996) p. 62. Also in Philippine Journal of Veterinary Animal Science 1984, 10 (3 & 4):40 (Abstr.). Also in Annotated Bibliography on Philippine Biodiversity: Livestock and Poultry (Agrobiodiversity) 1949-1997, Carabaos (2002) p. 367. A-58 HISTOLOGICAL OBSERVATION OF FOLLICULAR ATRESIA IN SWAMP <strong>BUFFALO</strong>* M. B. Ocampo, PhD Student, Hokkaido University A. T. de Asis, Student, CVM, CLSU L. C. Ocampo, M. S. Student, Hokkaido University H. Kanagawa, Professor, JFVM, Hokkaido University Swamp buffalo ovaries were collected and fixed for histological examination of follicular atresia. The follicles were classified according to size into three groups: 1.0-4.0 mm (small, 4.1-9.9 mm (medium) and 10.0 mm and above (large) in diameter. Also, the size of the corpus luteum on the surface of each pair of ovary was used to estimate the stage of estrus cycle. Of 312 follicles examined, 286, 18 and 8 were classified as small, medium and large follicles. Of these, 238 (83.2%), 10 (55.5%) and 8 (100%), respectively were observed to manifest signs of atresia. The number of follicles examined under follicular and luteal phase of estrus cycle were 168 (53.8%) and 144 46.2%), respectively. Of these, 120 (71.04%) and 136 (94.4%), were found to have signs of atresia. The results presented here provided the basic information for studying follicular atresia in swamp buffalo. That follicle diameter and stage of the estrus cycle are both a convenient and appropriate ANATOMY basis to use in the classification and description of the course of atresia. Keywords: follicular atresia, swamp buffalo ovaries *Buffalo Bulletin. 1994. 13:51-55. Also in PCC-OED, DA Abstracts: Water Buffalo Researches in the Philippines 1981-1995 (1996), p.66. Also in Annotated Bibliography on Philippine Biodiversity: Livestock and Poultry (Agrobiodiversity) 1949-1997, Carabaos (2002) p. 356. A-59 A STUDY ON SOME HISTOCHEMICAL CHARAC- TERISTICS OF <strong>THE</strong> OVARY OF SEXUALLY MATURE NON-PREGNANT <strong>PHILIPPINE</strong> CARABAO (Bubalus bubalis)* T. G. Pallasigue, Student The results of some histochemical studies on the ovaries of fifty (50) sexually mature Philippine carabao are presented in the study. During the follicular phase, the intensity of PAS reaction was persistent in the zona pellucida and Call-Exner’s bodies of the growing follicle compared with the other cellular structures of the ovary. Variations in the PAS reaction were observed in the basement membrane and liquor folliculi. These structures gave an intense PAS reaction during their developmental phase but weakens as the follicle approaches maturity. During the luteal phase, developing and regressing corpus luteum gave an intense PAS reaction than the fully developed corpus luteum. However, this phase showed less intense PAS reaction than the follicular phase. PASpositive materials were observed to be saliva resistant. Using the silver impregnation and mallory’s phosphotungstic acid hematoxylin stains, the different connective tissue elements in the ovary were identified and differentiated. In both stains used, collagen fibers were observed in the tunica albuginea, connective tissues surrounding the corpus luteum and in the stroma of the ovary. Reticular fibers were abundant in the ovarian stroma and theca interna and theca externa. Elastic fibers, which gave similar reaction as collagen were present in the walls of blood vessels. Keywords: Philippine carabao, non-pregnant, histochemical characteristics of ovaries *Undergraduate Thesis, College of Veterinary Medicine, University of the Philippines, Diliman, Quezon City, 1979. A-60 HISTOLOGICAL AND HISTOCHEMICAL STUDIES OF <strong>THE</strong> INTERNAL PARATHYROID OF <strong>THE</strong> MALE 23
- Page 1 and 2: ABSTRACT OF RESEARCHES ON THE PHILI
- Page 3 and 4: USER’S GUIDE The book contains pu
- Page 5 and 6: ACKNOWLEDGMENT Grateful recognition
- Page 7 and 8: CONTENTS Inoc, J. G. and C. P. Maal
- Page 9 and 10: CONTENTS Viernes, Jr., V. D. 2004.
- Page 11 and 12: CONTENTS Harada, H., et al. Ultraso
- Page 13 and 14: CONTENTS Ocampo, M. B., et al. Clea
- Page 15 and 16: CONTENTS Aranas, T. J., et al. 1968
- Page 17 and 18: CONTENTS Romulo, B. H., et al. Dige
- Page 19 and 20: ANATOMY A-1 DISTRIBUTION AND MICROS
- Page 21 and 22: of the islet. The pancreatic- polyp
- Page 23 and 24: (P>0.05) from that of the Philippin
- Page 25 and 26: A-15 THE MODIFIED HORN RING METHOD
- Page 27 and 28: undifferentiated cells. Mucigenous
- Page 29 and 30: *Abstracts of Completed Researches,
- Page 31 and 32: A-31 SCANNING ELECTRON MICROSCOPIC
- Page 33 and 34: cells” had fewer zymogen granules
- Page 35 and 36: is recommended that two years old P
- Page 37 and 38: Their secretions, together with tho
- Page 39: elated peptide (CGRP), vasoative in
- Page 43 and 44: appearance to the fungiform papilla
- Page 45 and 46: of pyknotic nuclei in the follicula
- Page 47 and 48: observed. Continuous medullary patt
- Page 49 and 50: examination of the muzzle prints no
- Page 51 and 52: conspicuously absent in the tunica
- Page 53 and 54: esembles closely that of the lympho
- Page 55 and 56: obtained for total serum protein, a
- Page 57 and 58: A study in the conception rate of t
- Page 59 and 60: significantly (P
- Page 61 and 62: and Philippine-Murrah in health. Ei
- Page 63 and 64: months to 3 years. Erythrocyte size
- Page 65 and 66: were highly significant level (P
- Page 67 and 68: THE CATTLE AND CARABAO BREEDING PRO
- Page 69 and 70: estimated breeding values of (EBVs)
- Page 71 and 72: and broken horn were common among t
- Page 73 and 74: the Alb A Alb B and Alb B Alb B gen
- Page 75 and 76: different in trms of shear force va
- Page 77 and 78: stock farms which practiced backyar
- Page 79 and 80: Ravi was at the top. The heterosis
- Page 81 and 82: & 4):61-66. Also in Annotated Bibli
- Page 83 and 84: Series of experiment were conducted
- Page 85 and 86: Keywords: embryo, in vitro fertiliz
- Page 87 and 88: The percentages of pregnant cattle
- Page 89 and 90: after the second injection. The con
- Page 91 and 92:
INSEMINATION OF PHILIPPINE CARABAO
- Page 93 and 94:
It was noted that regardless of the
- Page 95 and 96:
the presence or absence of cysteami
- Page 97 and 98:
R. de Vera, Laboratory Aid, PCC-OED
- Page 99 and 100:
on the factors affecting embryo rec
- Page 101 and 102:
Expanded blastocysts did nor surviv
- Page 103 and 104:
Early pregnancy diagnosis was condu
- Page 105 and 106:
ng/ml and dropped sharply at partur
- Page 107 and 108:
R-67 MANAGEMENT AND CLIMATIC FACTOR
- Page 109 and 110:
Keywords: carabao heifers, estrous
- Page 111 and 112:
animal draft power was designed and
- Page 113 and 114:
Water Buffalo Researches in the Phi
- Page 115 and 116:
D-13 SOME PHYSIOLOGICAL AND BIOCHEM
- Page 117 and 118:
FEEDING AND NUTRITION F-1 OBSERVATI
- Page 119 and 120:
W. L. Johnson, Former Graduate Assi
- Page 121 and 122:
in a majority of the carcass compon
- Page 123 and 124:
F-16 FEEDING VALUE OF CORN STOVER-M
- Page 125 and 126:
(DDMI) of rice straw per 100 kg bod
- Page 127 and 128:
D. D. Lorenzo, Instructor, Departme
- Page 129 and 130:
Tethering, soiling, communal pastur
- Page 131 and 132:
C. R. Legaspino, Former Student, De
- Page 133 and 134:
70.97 mg percent. Age and sex seeme
- Page 135 and 136:
levels (8.3 mg/100 ml vs. 11.0 mg/1
- Page 137 and 138:
for the first 7 months. Tethering p
- Page 139 and 140:
L. S. Castillo, Professor, Departme
- Page 141 and 142:
Keywords: caraheifers, chromic oxid
- Page 143 and 144:
similar. Addition of 1% urea in the
- Page 145 and 146:
espectively. Detergent fiber analys
- Page 147 and 148:
V. S. Subere, Former M. S. Student,
- Page 149 and 150:
serovars were used namely: Leptospi
- Page 151 and 152:
was conducted in the abattoirs of M
- Page 153 and 154:
Pseudomonas sp. (2.86%), Pasteurell
- Page 155 and 156:
*Undergraduate thesis, College of V
- Page 157 and 158:
upper respiratory tract of normal c
- Page 159 and 160:
studies are necessary to find possi
- Page 161 and 162:
permanent cheek teeth, 26 permanent
- Page 163 and 164:
uy back operation, 11 calving inter
- Page 165 and 166:
caraheifers, 2, 27, 45 carcass qual
Change language