Ultrasonographic features of the ovaries at different physiological stages in dairy water buffalo (Bubalus bubalis L.)

Date

6-2015

Degree

Doctor of Veterinary Medicine

College

College of Veterinary Medicine (CVM)

Adviser/Committee Chair

Jesalyn L Constante

Co-adviser

Jezie A Acorda

Abstract

This study was conducted to describe the features of water buffalo ovaries at various physiological stages using ultrasonography. Twenty-four apparently healthy pure and crossbred dairy water buffalo were grouped as non-pregnant (10), pregnant (9) and in estrus (8). B-mode ultrasonography of the ovaries was conducted transrectally using an ultrasound machine equipped with a 5.0 MHz linear array scanner. The ovaries appeared as non-homogenous hypoechoic ovoid structures. Follicles, most often found in animals in estrus, are round, homogenous anechoic structures found within the hypoechoic ovary. Measurements for length, height, circumference and volume were similar among physiologic stages, the highest mean measurements were consistently found in animals that were in estrus, while lowest mean measurements were in pregnant water buffalo. The mean echogenicity of buffalo in estrus are significantly lower (P<0.05) than non-pregnant and pregnant buffalo. The results of this study suggest that ovarian size and echo mean values, in conjunction with breeding records and timing of estrous synchronization, may be used to determine the physiological stage and best time for artificial insemination in mature female water buffaloes.

Language

English

Location

UPLB College of Veterinary Medicine (CVM)

Call Number

LG 993.5 2015 V4 C35

Document Type

Thesis

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