Preferencje help
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 23

Liczba wyników na stronie
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 2 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników

Wyniki wyszukiwania

help Sortuj według:

help Ogranicz wyniki do:
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 2 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
The article presents clinical cases of four cold-blooded stallions aged 6-9 years with diagnosed penile prolapse. The animals were referred to the Clinic relatively late: two horses in a period of 2-3 days from occurrence of prolapse, the third horse in the second week, and the fourth after 3 months. In three cases the penile prolapse was caused by mechanical trauma, in one case the cause was not established. Stallions undergoing treatment 2 and 3 days from the occurrence of prolapse did not suffered permanent or severe injuries to the copulative organ. Retraction of penis into the preputial cavity and using modified Büchner’s suture for a period of 7 days proved an efficient treatment. The procedure made it possible for the horses after recovery to continue as reproductive stallions on breeding farms. The horses with prolonged penile prolapse were in poor condition, emaciated and exhausted, with blood biochemical parameters indicating liver failure. As a result of the long-term condition one horse developed penile necrosis and suffered from strangury, whereas the second was diagnosed with penile paralysis. These two horses irretrievably lost their copulative abilities. In these clinical cases, in addition to general supportive treatment falectomy and surgical retraction of the penis to the area behind scrotum were performed in order to prevent more serious health complications. Considering the serious consequences following penile prolapse, the retraction of the prolapsed organ to the prepuce should be performed promptly in order to prevent irreversible lesions and enable it to retain reproductive ability.
The paper focuses on analyzing the reasons for abnormalities in follicular, ovulation and luteal function. Disturbances of these kinds are most often diagnosed in winter and transitional periods, and in old and lactating mares. These abnormalities affect ovulation cycles and cause sub fertility. Disturbances of follicular development, ovulations and luteal function can be diagnosed by anamnesis, estimation of sexual behavior, rectal palpation and ultrasonograph, and serum hormonal analysis. In order to give an accurate estimation and prognosis of follicular development and ovulation examinations of follicular vascularization (color-Doppler USG) and follicular fluid analysis (concentrations of: 17-β estradiol, inhibin-B, androstenedion, progesterone, heparin-like anticoagulant) must be performed. An accurate diagnosis of follicular abnormalities, ovulation and luteal function is necessary in order to choose the most suitable treatment.
Medycyna Weterynaryjna
|
2007
|
tom 63
|
nr 12
1534-1538
The paper focuses on presenting structural and functional disturbances that can be diagnosed in changed ovaries in mares. Anamnesis, sexual behavior assessment, rectal palpation and ultrasonography enable the diagnosis of most of the pathological changes. Determining some of the ovarian disturbances demands biopsy, hormonal and cytogenetic analyses. The presence of small and inactive ovaries can indicate hypofunction or chromosomal hypoplasia. Enlarged ovaries can be accompanied by tumors, hematomas, cysts and abscesses. Some pathological changes influence the ovulatory cycle, others are insignificant for ovarian activity and fertility in mares.
Illnesses of the genital tracts, often complicated with inflammation and degenerative processes in the endometrium and disturbances in ovarian function, reduce fertility in mares. The aim of the study was to estimate ovarian activity and assess intranuclear estrogen receptors in the endometrium of mares suffering from endometriosis. The study was performed prior to the breeding season (December.January) on 13 Arabian mares suffering from average to highly advanced degenerative changes in the endometrium. Ovarian ultrasonography and estimations of progesterone concentration in serum were performed three times over a 2 week period (examinations: I, II, III). Segments of endometrium were collected twice (at follicle sizes < 20 mm and > 25 mm) by biopsy and the quantity of intranuclear estrogen receptors were estimated in each layer of the endometrium. An ovarian cycle culminating with ovulation occurred in most of the mares over a period of 29 days (8 animals, 62%). The remaining 5 animals (38%) displayed: atresia of the dominant follicle (2 mares), anovulatory hemorrhagic follicles (2 mares), and persistent corpus luteum (1 mare). The average concentration of progesterone serum in two examinations (I and III) clearly exceeded the value of 1 ng/ml (p ≤ 0, 05 between I and II examinations). Stronger expressions and a greater score of immunoreactive estrogen receptors in each layer of the endometrium were noted when large follicles (p ≤ 0, 01) were found on the ovaries.
Penile prolapse can be a result of trauma, administration of phenotiazine tranquilizers, habronemiasis, large tumours, neuropathies, equine infectious anemia, purpura hemmorrhagica, spinal cord lesions and infammation (EHV-1, rabies). Penile prolapse is often associated with paraphimosis or results from the relaxation of musculus retractor penis which is caused by senility, severe general debilitation or exhaustion and starvation. Prolonged prolapse can be confused with the penile paralysis or priapizm. This article presents the case of a seven-year-old stallion with irreversible changes in the penile resulting from the lack of veterinary care after trauma as well as general severe debilitation. The lesions involved the glans penis, the free part of the penis and the inner lamina of the preputial fold. Those structures could not be identified for they composed an ulcerative, granulomatous mass with areas of fibrosis which was limited by the fibrotic preputial ring. Considering the irreversible injury of the prolapsed penis and the horse’s inability to copulate or properly urinate, it was referred for phalectomy. In the presented case a direct complication after penile amputation was an abscess of corpus cavernosum penis. One month after surgery, impeded urination resulting from the narrowing of the urethra was observed. Then a plastic surgery of the urethra was performed. Examinations performed three and six months after urethroplasty revealed no disturbances in urination or protruding and retraction of the penile stump. Considering serious consequences that may occur after the penile prolapse, one should immediately provide proper medical treatment, which can help to avoid the development of irreversible changes in the prolapsed organ and preserve the stallion’s reproductive function.
Insulin-like growth factor I (IGF-I) is a polipeptyde hormone produced mainly by the liver in response to the endocrine growth hormone stimulus, but it is also secreted by multiple tissues for autocrine or paracrine purposes. IGF-I represents one of the most important growth regulators, playing a central role in fetal and neonatal growth. However, the role of IGF-I in the reproductive physiology of horses is still little known. Therefore, the aims of this work were 1) to evaluate the IGF-I serum concentration in mares during the first 4 days after parturition and in their newborn foals during the first 4 days of life, and 2) to determine whether the IGF-I concentration may be influenced by the type of parturition. Two groups of subjects were examined: 7 healthy mares and their foals born by spontaneous parturition (group F), and 10 healthy mares and their foals born by non-spontaneous parturition, requiring medical assistance (group P). From each animal, the first blood samples were collected within 30 min of birth, and then, daily, during 4 days after parturition. The samples were collected once a day at 8.00 a.m. IGF-I was analyzed by the radioimmunoassay method with the IGF-RIA-CT kit (BioSource, Belgium). The results revealed that the mares from the group P had a statistically significantly higher concentration of IGF-I compared with the mares from the group F (90.9 ± 7.02 vs. 40.9 ± 5.94 ng/ml, respectively, p ≤ 0.01). Similarly, the statistically higher values of this factor were found in the foals from the group P than in those from the group F (130 ± 8.59 vs. 83.1 ± 6.56 ng/ml, respectively, p ≤ 0.01). Furthermore, a positive correlation was found between the concentration of IGF-I in the blood serum of mares and their foals on the first day of the study (r = 0.50, p ≤ 0.05). In summary, disturbances in the course of parturition did not have a negative impact on the IGF-I level in either mares or their newborn foals.
The article presents a case of a newborn foal (32 hours of life) with an acute abdominal pain. The foal was sent to the clinic after 24 hours of conservative treatment in the field. Physical examination revealed acute obstruction of the small intestine. The patient was admitted for emergency surgery. General multimodal anaesthesia with endotracheal tube placement and oxygen supplementation was performed. During medial laparotomy, about one meter of necrotic small intestine was resected, and the right ovary was removed. This surgical procedure was performed under general infusion multimodal anaesthesia with intratracheal administration of a mixture of oxygen and air. Postoperative recovery was uneventful, and no complications were observed. During the 5-month observation period, no disturbances in the somatic development and general condition of the patient were found.
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 2 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.