Preferencje help
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 83

Liczba wyników na stronie
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 5 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 / 5 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
The study was carried out on 120 sows divided into two groups comprising 80 animals in the experimental group and 40 in the control. The sows of the experimental group were given Ursoselevit at a dose of 1 ml per 20 kg of body weight at week 5 and 3 before parturition. In control sows no drugs were applied. It was found that morbidity of sows due to the MMA syndrome decreased after Ursoselevit administration. The drug had a beneficial influence on the fertility of sows. It also diminished the frequency of diarrhoea occurrence and the number of death in piglets coming from sows which had received the drug.
Tests were made to show how administration of Uterotonic-Polfa preparation, which contained 50 mg of propranolol in 10 ml of solvent, influenced occurrence of MMA syndrome and the fertility in pigs. It has been proved that application of this preparation after the birth of the first piglet limits occurrence of MMA and decreases the percentage of piglets which die shortly after birth (first 7 days). What is more, applying the preparation has beneficial influence on the fertility of sows and gilts. In percentage terms, the number of females which were rejected because of inability to become pregnant was considerably higher in control groups rather than experimental ones.
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.
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 5 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.