Autor: Zduńczyk, S. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Comparison of efficacy of Ovsynch protocol to single PGF2α administration in treatment of individual dairy cows with post-service subestrus
Autorzy:: Barański, W.
Nowicki, A.
Zduńczyk, S.
Powiązania:: https://bibliotekanauki.pl/articles/2087095.pdf
Data publikacji:: 2021
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: Ovsynch
prostaglandin F2α
post-service
subestrus
cow
Źródło:: Polish Journal of Veterinary Sciences; 2021, 24, 3; 351-354
1505-1773
Pojawia się w:: Polish Journal of Veterinary Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Effect of an integrated veterinary herd health program on fertility performance and incidence of reproductive disorders in five dairy herds
Autorzy:: Barański, W.
Nowicki, A.
Zduńczyk, S.
Powiązania:: https://bibliotekanauki.pl/articles/2087102.pdf
Data publikacji:: 2021
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: integrated herd health program
high yield
cows
fertility performance
Źródło:: Polish Journal of Veterinary Sciences; 2021, 24, 3; 433-437
1505-1773
Pojawia się w:: Polish Journal of Veterinary Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Late embryonic and foetal losses in eight dairy herds in north-east Poland
Autorzy:: Baranski, W.
Zdunczyk, S.
Janowski, T.
Powiązania:: https://bibliotekanauki.pl/articles/30348.pdf
Data publikacji:: 2012
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:: The information about the occurrence of embryonic and fetal losses in dairy herds in Poland is limited. Thus, the objective of this study was to assess the pregnancy loss between days 30 and 45 (late embryonic mortality) and between days 45 and 260 after artificial insemination (AI) (foetal loss). The study was carried out in 8 dairy herds in north-east Poland. In total 954 cows were examined for pregnancy on day 30 after AI using an ultrasound scanner. Cows diagnosed pregnant were re-examined on day 45 and 260 after AI using transrectal palpation. The pregnancy rate on day 30 after AI was 62.0%, after re-examination on day 45 after AI the pregnancy rate was 56.4%. The late embryonic loss rate was on an average 9.1%. The occurrence of late embryonic mortality differed not significantly (p > 0.05) among herds and ranged from 13.1% to 19.3%. The pregnancy rate on day 260 after AI was 53.5%. The average foetal loss after day 45 of pregnancy was 5.0%, ranged between herds from 0 to 9.2% (p > 0.05) and was significantly lower than embryonic loss rate (p < 0.05). The study revealed that in 8 dairy herds in north-east Poland the overall pregnancy loss between days 30 and 260 averaged 13.7% and therefore it is an important factor affecting economic efficiency of dairy production. The foetal loss was less prevalent than the late embryonic loss. Future strategies to minimizing late embryonic loss are needed.
Źródło:: Polish Journal of Veterinary Sciences; 2012, 15, 4
1505-1773
Pojawia się w:: Polish Journal of Veterinary Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: The effects of osaterone acetate on clinical signs and prostate volume in dogs with benign prostatic hyperplasia
Autorzy:: Socha, P.
Zduńczyk, S.
Tobolski, D.
Janowski, T.
Powiązania:: https://bibliotekanauki.pl/articles/2087646.pdf
Data publikacji:: 2018
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: dogs
benign prostatic hyperplasia
osaterone acetate
prostate volume
Źródło:: Polish Journal of Veterinary Sciences; 2018, 21, 4; 797-802
1505-1773
Pojawia się w:: Polish Journal of Veterinary Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Effect of repeated low doses of GnRH on follicular development and ovulation in anovulatory dairy cows with follicle growth to emergence size
Autorzy:: Barański, W.
Nowicki, A.
Zduńczyk, S.
Tobolski, D.
Powiązania:: https://bibliotekanauki.pl/articles/16539311.pdf
Data publikacji:: 2022
Wydawca:: Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:: cows
anovulation
repeated doses of GnRH
ovulation
Opis:: The aim of the study was to evaluate the effect of repeated low doses of GnRH agonist buserelin once a day for 5 days on follicle development and ovulation in anovulatory dairy cows with follicles growth only to emergence. The study was conducted on 71 anovulatory Polish Holstein Friesian cows. Anovulation with growth of follicles to emergence was defined as small ovaries with follicles of ≤ 5 mm in diameter and without corpus luteum on two examinations in a 7-10 day interval between 50-60 days after parturition. Cows were allocated to one of two group. Cows from group 1 (n = 58) received 0.4 μg of buserelin (Receptal, MSD, Poland) i.m. once a day for 5 days. Control cows from group 2 (n = 13) received saline. Ovarian structures were monitored weekly after the end of treatment by ultrasound for 4 weeks. The diameter of ovarian follicles on the ovaries was measured and recorded. Occurrence of ovulation was determined by the presence of corpus luteum. Overall, ovulation occurred in 46.6% (27/58) of cows treated with repeated doses of GnRH, while no corpus luteum was observed in the control group during the study period. There were significantly (p<0.05) more follicles 6-9 mm in diameter and 10-20 mm in diameter in cows treated with GnRH than in control cows. In conclusion, repeated low doses of GnRH analogue buserelin once a day for 5 days stimulate the development of ovarian follicles in anovulatory dairy cows with small ovarian follicles and led to ovulation in 46.6% of cows during 4 weeks after the end of the treatment.
Źródło:: Polish Journal of Veterinary Sciences; 2022, 25, 3; 391-396
1505-1773
Pojawia się w:: Polish Journal of Veterinary Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Effect of repeated low doses of GnRH analogue (buserelin) on fertility performance of dairy cows with anovulation type I
Autorzy:: Barański, W.
Nowicki, A.
Zduńczyk, S.
Polak, Z.
Powiązania:: https://bibliotekanauki.pl/articles/16647577.pdf
Data publikacji:: 2023
Wydawca:: Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:: anovulation type I
cows
fertility
repeated doses of GnRH
Opis:: The aim of this study was to evaluate the fertility response of dairy cows with anovulation type I on repeated low doses of GnRH agonist buserelin. The study was conducted on 83 anovulatory and 60 cyclic Polish Holstein Friesian cows. Anovulation type I was defined as small ovaries with follicles of ≤ 5 mm in diameter and without corpus luteum on two examinations in a 7-10 day interval between 50–60 days after parturition. Cows from the experimental group (n=58) received 0.4 μg of buserelin i.m. once a day for 5 consecutive days. Cows from the negative control group (n = 25) received saline. Sixty cyclic cows receiving no treatment served as positive controls. Intervals from calving to estrus and from calving to conception, pregnancy rate 30-35 days and 260 days after AI, and pregnancy loss were calculated. The anovulatory cows had a substantially prolonged calving to conception interval, decreased pregnancy rate and increased pregnancy loss and culling rate compared to cyclic herd mates. The average calving to conception interval was significantly (p<0.05) shorter in treated cows compared to non-treated anovulatory cows (153.7 days vs 209.3 days). In conclusion, repeated low doses of GnRH analogue buserelin led to a significant shortening of calving to conception interval. More clinical trials are needed to determine the practical usefulness of this method for the treatment of anovulation type I in dairy cows.
Źródło:: Polish Journal of Veterinary Sciences; 2023, 26, 2; 223-229
1505-1773
Pojawia się w:: Polish Journal of Veterinary Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Incidence of clinical form of anestrus after unsuccessful service in cows in eight dairy herds in north-east of Poland
Autorzy:: Barański, W.
Nowicki, A.
Zduńczyk, S.
Janowski, T.
Powiązania:: https://bibliotekanauki.pl/articles/2087730.pdf
Data publikacji:: 2018
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: anestrus after service
dairy cows
silent heat
Źródło:: Polish Journal of Veterinary Sciences; 2018, 21, 2; 377-381
1505-1773
Pojawia się w:: Polish Journal of Veterinary Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Concentrations of oestrogens in blood plasma and seminal plasma of boars during the postpuberal period
Autorzy:: Zdunczyk, S.
Janowski, T.
Ras, A.
Baranski, W.
Powiązania:: https://bibliotekanauki.pl/articles/30944.pdf
Data publikacji:: 2011
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:: Concentrations of oestrogens in the blood plasma and seminal plasma of mature boars are high. However, little is known about their concentrations after reaching sexual maturity. The aim of this study was to determine the concentration of oestrogens in blood plasma and seminal plasma of boars during the postpuberal period. Free and conjugated oestrone and oestradiol-17β were determined by radioimmunoassay in blood from the testicular vein and artery, and peripheral circulation as well as in seminal plasma collected from 18 Polish Landrace boars. The animals were divided into three groups (n = 6) according to age (8, 12 and 16 months, respectively). Oestrone was predominant free and conjugated oestrogen. The highest values of oestrogens were measured in the testicular vein (p ≤ 0.05). The concentrations of oestrogens in seminal plasma did not differ from those found in the peripheral circulation. An age-dependent increase in levels of all four oestrogens (p ≤ 0.05) was observed. This can be associated with biochemical maturation of the reproductive system during the postpuberal period.
Źródło:: Polish Journal of Veterinary Sciences; 2011, 14, 4
1505-1773
Pojawia się w:: Polish Journal of Veterinary Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Effect of progesterone-releasing intravaginal device on reproductive performance of cows with cystic ovarian follicles after puerperium
Autorzy:: Rudowska, M.
Barański, W.
Zduńczyk, S.
Tobolski, D.
Janowski, T.
Powiązania:: https://bibliotekanauki.pl/articles/2087479.pdf
Data publikacji:: 2019
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: cows
cystic ovarian follicles
progesterone insert
fertility
Źródło:: Polish Journal of Veterinary Sciences; 2019, 3; 489-494
1505-1773
Pojawia się w:: Polish Journal of Veterinary Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Second prostaglandin F2α treatment during Ovsynch protocol does not improve fertility outcomes in dairy cows
Autorzy:: Nowicki, A.
Barański, W.
Tobolski, D.
Zduńczyk, S.
Janowski, T.
Powiązania:: https://bibliotekanauki.pl/articles/2087597.pdf
Data publikacji:: 2019
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: cows
Ovsynch
second PGF2α treatment
fertility
Źródło:: Polish Journal of Veterinary Sciences; 2019, 1; 157-161
1505-1773
Pojawia się w:: Polish Journal of Veterinary Sciences
Dostawca treści:: Biblioteka Nauki

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