Wyniki wyszukiwania - AGRO

1

Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik

The effect of age at first calving on the milking performance of primiparous Jersey cows

100%

Pytlewski J., Antkowiak I. R.

Roczniki Naukowe Polskiego Towarzystwa Zootechnicznego

|

2021

|

tom 17

|

nr 2

2

Course of mastitis treatment in cows with Mastisan PN-MC

100%

Malinowski E., Klossowska A., Szalbierz M., Biegala T.

Bulletin of the Veterinary Institute in Puławy

|

1994

|

tom 38

|

nr 1

3

Tickborne encephalitis epidemic caused by goat's milk

100%

Borosznoi E., Muller E.

Annals of Agricultural and Environmental Medicine

|

1994

|

tom 01

|

nr 2

4

Factors affecting the freezing point of milk from Polish Holstein-Friesian cows

88%

Otwinowska-Mindur A., Ptak E., Grzesiak A.

Annals of Animal Science

|

2017

|

tom 17

|

nr 3

5

Effect of daily yield of cows and date of first insemination on services per conception

88%

Sawa A., Jankowska M., Augustyniak A.

Acta Scientiarum Polonorum. Zootechnica

|

2018

|

tom 17

|

nr 1

6

Milk yield recording in tied- and loose-housed dairy cows

88%

Pogorzelska J., Lewarowski M.

Polish Journal of Natural Sciences

|

2005

|

tom 18

63-69

7

Interaction between different FSH drugs and selected factors affecting the rate of superovulation in cows

88%

Jaskowski J. M., Znaniecki R.

Bulletin of the Veterinary Institute in Puławy

|

1997

|

tom 41

|

nr 1

Analysis of multiple regression of data obtained on 347 donor cows revealed a statistically significant interaction (P<0.001) between FSH drugs and: 1- the age of cows. 2 - month of examination and the number of transferable embryos and month of their yields. 3 – the number of superovulations per cycle and the number of transferable embryos.

8

Rate of superovulation and embryo production in cows treated with pituitary gonadotropin containing definite FSH LH formulae

88%

Jaskowski J. M., Zbylut J., Hutnikiewicz I.

Bulletin of the Veterinary Institute in Puławy

|

1996

|

tom 40

|

nr 1

The rate of superovulation and embryo production in 120 beef and 177 Black-WhitexHolstein-Fresian (BWxHF) cows treated with a new generation of FSH preparations – Stimufol (Rhone Merieux) and Ovagen (ICP) were compared with those treated with frequently used FSH-P. BWxHF cows treated with Stimufol and Ovagen revealed a significantly higher (P<0.05) number of embryos suitable for a transfer than those treated with FSH-P. In contrast to FSH-P., Stimufol failed to increase the rate of embryo production in Aberdeen-Angus and Limousine cows.

9

Transvaginal aspiration and postmortem harvesting of oocytes in cows in different phases of the oestrous cycle

88%

Macak V., Balent P., Novotny F., Lazar G., Kacmarik J., Hajurka J.

Bulletin of the Veterinary Institute in Puławy

|

2004

|

tom 48

|

nr 2

10

Treatment of cystic ovarian disease [COD] in cows with a low fertility. II. The influence of some factors on the treatment efficacy

88%

Kuzma R., Romaniuk J.

Bulletin of the Veterinary Institute in Puławy

|

1994

|

tom 38

|

nr 1

11

Comparative study on the efficacy of hormonal and non hormonal treatment methods in ovarian afunction affected dairy cows

88%

Mwaanga E. S., Zdunczyk S., Janowski T.

Bulletin of the Veterinary Institute in Puławy

|

2004

|

tom 48

|

nr 3

12

Adrenergic and acetylcholinesterase-positive innervation of the bovine oviduct

88%

Czaja K., Majewski M., Klinkosz B., Kaleczyc J.

Folia Morphologica

|

1993

|

tom 52

|

nr 3

13

Therapeutic efficacy of ovary cyst rupture in cows of low fertility

88%

Kuzma R., Kuzma K., Markiewicz H.

Bulletin of the Veterinary Institute in Puławy

|

1995

|

tom 39

|

nr 1

14

LH release in response to GnRH in cows with puerperal endometritis

88%

Janowski T., Chmielewski A., Jaroszewski J., Zdunczyk S.

Polish Journal of Veterinary Sciences

|

1998

|

tom 01

|

nr 1

Ten cows with and 5 cows without puerperal endometritis were treated with 20 μg GnRH analogue, buserelin, intramuscularly. Blood samples were taken every 20 min for 8h before and for 8h after injection of GnRH. All cows responded to GnRH with significant increase of LH 20 min after treatment. The LH peak was significantly lower in cows with puerperal endometritis than that in clinically normal cows (27.91 ± 5.47 ng/ml vs 80.60 ± 17.2 ng/ml; p ≤ 0.01). The total AUC of LH was also significantly smaller in cows with puerperal endometritis compared to cows without it (p ≤ 0,01). The results suggest that the delayed resumption of ovarian function in cows with uterine infection may be caused by reduced responsiveness of the pituitary to endogenous GnRH. Further studies are needed in order to investigate the mechanism of this phenomenon.

15

Seasonal results of transfer of fresh and frozen embryos and the effectiveness of superovulation in cows

88%

Jaskowski J. M., Znaniecki R., Zbylut J.

Bulletin of the Veterinary Institute in Puławy

|

1996

|

tom 40

|

nr 1

Seasonal differences were found in the rate of fertilisation in 1641 cows implanted with fresh embryos. The rate of fertilisation was higher (P<0.01) than the respective mean values in October, January, April, June and February and lower (P<0.01) in July and November. However, the rate of fertilisation differed insignificantly in cows implanted with frozen embryos. The month of superovulation significantly affected the number of produced embryos and oocytes, embryos suitable for transfer and total embryos; the number of embryos was lowest in Summer, and highest in January, February, and March.

16

Influence of various treatment methods on bacteriological findings in cows with puerperal endometritis

88%

Kaczmarowski M., Malinowski E., Markiewicz H.

Polish Journal of Veterinary Sciences

|

2004

|

tom 07

|

nr 3

The aim of the study was to identify the species of microorganisms isolated from the uterus of healthy cows (control group) and cows affected with puerperal metritis (PM) before and after an experimental therapy with an immunomodulator and antibiotics versus commonly applied methods (antibiotic + ß-blocker or antibiotic + PGF2a). Examinations were carried out on 110 cows with PM in three farms with similar system of rearing and nutrition. The control group consisted of 21 cows without postpartum disturbances. Smears from the uterus were taken before treatment and then at 21st day of observation. Escherichia coli and other species of Enterobacteriaceae family were isolated from 48.2%of PM cows and 47.6% of healthy cows. The degree of Arcanobacterium pyogenes infection was statistically lower in healthy than in sick cows (9.5% versus 30.0%). Streptococcus sp. was isolated from 13.6% of PM cows and from 16% of control ones. Staphylococci were isolated from 10% of PM and from 30% of control cows. Other bacteria species were isolated from about 10% of the examined cows. The best elimination of infections (66%) was noted in cows treated with the intrauterine antibiotic in combination with PGF2a i.m. injection. Examination showed that species of bacteria in the postparturient uterus were similar in healthy and sick cows. However, Arcanobacterium pyogenes was isolated 3 times more often from the sick animals. This pathogen was identified in 11 cows out of 19 (57.9%) culled subsequently because of infertility after the metritis puerperalis was clinically cured.

17

Involvement of arachidonic acid and its products in the mechanism of progesterone influence on its own production in vitro in bovine corpus luteum

88%

Kotwica J.

Bulletin of the Veterinary Institute in Puławy

|

2004

|

tom 48

|

nr 3

18

Milk proteins of Jersey cows

75%

Antkowiak I., Pytlewski J.

Animal Science. Scientific Papers of Agricultural University of Poznan

|

2003

|

tom 05

The examined population of Jersey cows was characterised by the occurrence of three genotypes of the casein protein fraction and four genotypes of whey protein.

19

Comparison of two methods of housing primiparous cows

75%

Winnicki S., Jugowar J. L., Sobek Z.

Annals of Animal Science

|

2014

|

tom 14

|

nr 2

20

The length of interpregnancy period vs. longevity and selected production factors of Black-and-White cows

75%

Pytlewski J., Antkowiak I., Stanislawski D.

Animal Science. Scientific Papers of Agricultural University of Poznan

|

2006

|

tom 08

Ograniczanie wyników