Comparative study of six alternative solutions for embalming dogs for gross dissection and as fixatives for histological studies
/ Jojo D. Cauilan
- Los Baņos, Laguna : University of the Philippines Los Baņos ,2018.
- xvi, 121 pages 27 x 21 cm.
Thesis (Master of Science in Veterinary Medicine) -- University of the Philippines Los Baņos,May2018.
This study was conducted to compare the efficiency of six alternative fixative solutions with formalin fixation of dog specimen for gross and histological studies. thirty-five non-descript dogs with the body condition score range of 3-5 out of 1-9 were used and euthanized via the common carotid artery. They were divided into seven treatment groups with five animals per treatment by stratified sampling. Animals in each treatment group were embalmed with formaldehyde (Tl), Soap Ethanol-based Fixing Solution (T2), Weigner's Solution (T3), modified SEFS 1 (T4), modified SEFS 2 (T5), modified Weigner's Solution 1 (T6) and modified Weigner's Solution 2 (T7). Color, texture, haptic property and conjunctival irritation scoring was done once a month for five months.
Bacterial and fungal isolation was conducted to determine the presence of microbes. One non-descript dog was used for histological study and tissue samples were collected, fixed with the six alternative solutions and formalin solution, then subjected to routine paraffin technique at 24 hours, 48 hours and 72 hours post-fixation. Results revealed that dog specimen fixed with solution from Treatment 6 presented a life-like color and consistencies which are very important in studying gross anatomy.
However, histological studies revealed that alternative fixing solutions were less effective with formalin fixation. Fungal and bacterial identification revealed the presence of microbes while no fungal growths were observed. Cost analysis showed that formalin solution remains the cheapest of the solutions. In conclusion, Treatment 6 can be used as an alternative fixative for gross anatomical studies considering the factors in selection of the type of fixative required for dissection. Histologically, formalin solution was still the best solution for tissue fixation although alternative fixative solutions presented in the study can be used but only for a limited time period of24 hours.
Embalming Dogs Dissection Histology Fixatives (Histology) Veterinary Medicine