[Histopathological evaluations of ureter and kidney after experimental ureteral anastomosis in dog]

To determine histomorphological changes of ureter and kidney following experimental ureteral anastomosis. The aim of this study was to evaluate more details about complications arising from ureteral anastomosis in dogs. Five healthy mongrel dogs weighing between 15-30 kg were used. Anesthesia was induced by acepromazine and thiopenthal sodium and maintained by halothane in oxygen in a closed circuit. After midline celiotomy, left ureter near trigon area was incised and immediately end to end anastomosis was performed in simple interrupted pattern by using polydiaxanon 6/0. All animals were euthanized at day 90 after operation and the ureters and their related kidneys were evaluated both macroscopically and microscopically. The gross observations of the ureters showed obstruction [one case] and mild hydroureter [three cases]. Microscopically, hyperplasia [in epithelial and muscularis layers], fibrosis [lamina properia-submucosa and serosal layers] and different phases of inflammation and repair [in lamina properia-submucosa, muscularis and serosal layers] were observed in the ureters. Histological sections in the related kidneys revealed hydronephrosis in one case. Although ureteral anastomosis is technically difficult in small animals and has a high rate of postoperative obstruction, in case of transected or damaged ureter, ureteral reanastomosis is one of the options for veterinary surgeons. In the present study, in spite of some complications, the anastomosis has been performed successfully in 80 percent of animals and certainly meticulous surgery is mandatory to prevent ureteral obstruction

[Developmental study of prenatal goat testis]

There are some reports about development of prenatal ruminants' testis. But there is not any report about it in goat; so the present study was performed on 23 goats fetuses collected from Ahvaz slaughterhouse. After measuring fetuses crown rump length [CRL], their approximate ages were determined. On the basis of the CRL, the fetuses were divided into 6 groups. Then testes were extruded out and fixed and tissue sections were prepared by routine procedures and then were stained with Hematoxylin and Eosin and Periodic Acid Schiff. The biometric results showed a reasonable increase in the number of sertoli cells and gonocytes, diameter of sex cord and tunica albuginea during the development age dependences. The number of sex cords in each microscopic field showed an increase first and decreased thereafter. There is no difference between prenatal goat testis developments with prenatal testicular stages in other ruminants

developmental study of ventricular and interventricular walls thickness of fetal heart in goats

The increasing processes of body and heart weight, the index changes of heart to body weight rat and of heart walls thickness [ventricular and inter ventricular] were studied on 160 goat fetus [2groups male and female] from 7 to 22 week ages [at the first to the end of fetal period]. Data analys in SPSS and by ANOVAshowed that the influence of age in all of 6 studied parameters was signifie [p < 0.01].conclusion: The increasing process of heart weight is followed by ageing and by Bod weight. The index of heart to body weight ratio decreases while the body weight increases. The Averag of maximum thickness of left ventricle wall is more than, interventricular [septum] and of this is mo than of right, frequently. The increasing processes of thickness for left ventricle and septum are simila while the right has an independence model

Survey on Frequency and Kinds of Foreign Bodies of Rumen and Reticulum and Reticular Adhesion in Buffaloes Slaughtered in Ahvaz Abattoir

Perforation of the wall of the reticulum by a sharp foreign body often produces peritonitis and can cause involvement of other organs. In cattle the disease is economically important because of severe loss of production and high mortality rate. The objective of this study was to determine the presence and kinds of foreign bodies in apparently healthy buffaloes which were slaughtered in Ahvaz abattoir. In addition, adhesion of reticulum was studied. The animals [n = 200] were selected from both sexes and divided into three age groups[group 1: less than 2.5 years old, group 2: 2.5-5.5 years old and group 3: more than 5.5 years old]. Adhesion of reticulum was seen in 43 buffaloes and there were significant difference between sexes and different age groups [p < 0.05]. In 73 buffaloes, foreign bodies were found. Furthermore, 14 pieces of metallic foreign bodies penetrated the wall of reticulum in 13 buffaloes. According to the presence of foreign bodies, there were no significant difference between sexes and among different age groups [p > 0.05]. A relation between adhesion and presence of metallic foreign bodies was seen

[Macroscopic and microscopic study of teniae uterina in water buffalo]

Band like structures were found on the dorsal surface of the body and the cornua of the uterus in water buffalo [Bubalus bubalis] in a macroscopic study and designated as uterine bands [Teniae uterine]. Among 174 uteri studied in 96.63% of cases [172 samples] these structures were observed at on or both cornua. Only 3.27% of the cases [96 samples] had no distinct bands. In microscopic study these bands were seen as projections of dense connective tissue and smooth muscle fibers extending in different directions. These bands were rest on top of the myometrium covered by mesometrium. According to our knowledge no report indicating the existence of these structures in ruminants as well as buffalo is reported so far. It is suggested that these bands play a supporting role on uterine muscular wall during pregnancy