Wyniki wyszukiwania - Biblioteka Nauki

1

Sperm parameters and DNA fragmentation of balanced chromosomal rearrangements carriers

100%

Pastuszek E. , Kiewisz J. , Kulwikowska P. M. , Lukaszuk M. , Lukaszuk K.

Folia Histochemica et Cytobiologica

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2015

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tom 53

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nr 4

2

An assessment of the breeding maturity of insemination boars based on ejaculate quality changes

84%

Banaszewska D. , Kondracki S.

Folia Biologica

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2012

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tom 60

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nr 3-4

3

Sexual maturation in common vole (Microtus arvalis) males raised under laboratory conditions

84%

Miska A. , Kruczek M. , Kapusta J.

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2014

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tom 62

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nr 2

4

The conductivity of the bulls ejaculate in correlation with the qualitative parameters of the ejaculate and the concentration of Cu, Ca and P in seminal plasma

84%

Machal L. , Krivanek I. , Klupczynski J.

Polish Journal of Natural Sciences

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2002

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tom 10

5

Post-cervical insemination of sows with low sperm concentration dose in the commercial pig farm

67%

Dimitrov S. , Zmudzki J.

Bulletin of the Veterinary Institute in Puławy

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2009

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tom 53

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nr 2

225-228

EN

The advantages of the insemination through the cervix into the uterus using a lower number of spermatozoa were investigated. Two hundred Danube White breed sows housed on a commercial pig farm were used in the study. The sows were randomly assigned to one of the following two equal treatment groups: group 1 - post-cervical insemination (PCI) with 1.5 x 10⁹ spermatozoa in 50 ml with a SOFT QUICK® catheter, and group 2 - cervical insemination (CI) with 3.0 x 10⁹ spermatozoa in 100 ml with a spiral type catheter. The animals were inseminated twice after the onset of standing reflex. Pregnancy was diagnosed at 28 to 30 d after the insemination by ultrasonography. Prior to data analysis, the sows were categorised into two weaning-to-oestrus intervals (WEI) of ≤6 d or >6 d. The highest farrowing rate - 100% was obtained after cervical insemination with 3.0 x 10⁹ spermatozoa in sows cycling within 6 d after weaning. In both methods, there was a tendency for low farrowing in sows in the >6 d WEI category in comparison with the animals at ≤6 d WEI. Similarly, the mean litter size with the standard device (CI) were 10.35 and 11.67 and with the PCI device 10.23 and 10.35. The average number of piglets born alive per litter was greater (P<0.5) for sows inseminated by the CI method of at >6 d category. The results show that SOFT QUICK® could be used in sows in a successful way as an intrauterine method in commercial farms. The main effect of the number of spermatozoa per dose and the weaning-to-oestrus interval did not significantly influence the overall birth weight of the litter and the average birth weight of the piglets.

6

The effect of sperm concentration in the ejaculate on morphological traits of bull spermatozoa

67%

Kondracki S. , Banaszewska D. , Wysokinska A. , Iwanina M.

Folia Biologica

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2012

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tom 60

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nr 1-2

7

The relationship between plasma cholesterol and lipids and qualitative indicators of the ejaculate of Holstein and Czech Spotted bulls

67%

Machal L.

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tom 10

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nr 2

8

Wplyw rasy i wieku mlodych knurow na wybrane cechy ich nasienia

51%

Szostak B. , Przykaza L.

Acta Scientiarum Polonorum. Zootechnica

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2010

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tom 09

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nr 3

93-99

PL

Celem badań była analiza wpływu rasy/wariantu krzyżowania młodych knurów, w wieku od rozpoczęcia użytkowania do ukończenia pierwszego roku życia, na wybrane cechy biologiczne ich nasienia i liczbę dawek, jaka może być sporządzona z jednego ejakulatu. Podjęto również próbę określenia wpływu wieku na cechy nasienia w obrębie rasy wielkiej białej polskiej (wbp) i mieszańców – hampshire x duroc (hamp x dur).Materiał badawczy stanowiło łącznie 7719 ejakulatów pobranych od osobników rasy polskiej białej zwisłouchej (pbz) i wbp, oraz mieszańców hamp x dur, użytkowanych w stacji unasieniania loch w Kraśniku. Badane osobniki podzielono na dwie grupy, w zależności od wieku: I gr. – młode knury w wieku od rozpoczęcia użytkowania do ukończenia pierwszego roku życia, II gr. – knury w drugim roku życia. Ejakulaty oceniano na podstawie: objętości, koncentracji plemników, odsetka plemników o ruchu postępowym i liczby dawek inseminacyjnych uzyskanych z ejakulatu. W badaniach stwierdzono, że parametry ejakulatów młodych knurów ocenianych ras były istotnie zróżnicowane. Największą objętością ejakulatu, odsetkiem plemników o ruchu postępowym i liczbą sporządzonych dawek inseminacyjnych z jednego ejakulatu charakteryzowały się młode knury pbz. Knury mieszańce hamp x dur charakteryzowały się najwyższą koncentracją plemnikow (422,76 tys. na mm3). Stwierdzono istotny wpływ wieku na analizowane cechy u knurów rasy wbp oraz mieszańców (z wyjątkiem koncentracji plemników).Wysoki potencjał reprodukcyjny, wyrażony liczbą dawek inseminacyjnych (powyżej 20 szt.) prezentowały knury rasy wbp i mieszańce hamp x dur w drugim roku życia.

EN

The aim of the study was to analyse the influence of a breed/crossbreed of young boars, at the age from starting the exploitation till the end of their first year of life on selected biological features of their semen and on the number of doses which can be made from one ejaculate. An attempt has been made to determine the influence of age on features of semen in Polish LargeWhite (PLW) breed and crossbreed boars – Hampshire x Duroc (Hamp x Dur). The material under investigation consisted of the total of 7 719 ejaculates taken from boars belonging to Polish Landrace (PL) breed, PLWbreed and from crossbreed boars Hamp x Dur, used at the insemination station in Kraśnik. The investigated boars were divided into two groups, depending on their age: the first group comprised boars at the age from starting the exploitation till the end of their first year of life, and the second group consisted of boars at the second year of life. Ejaculates were compared with respect to their volume, concentration of spermatozoa, percent of progressive motility spermatozoa and the number of insemination doses obtained from one ejaculate. The results of the study have shown that the parameters of ejaculates of young boars of the investigated breeds varied considerably.Young boars belonging to PL breed were characterized by the largest volume of ejaculate and the largest percent of progressive motility spermatozoa; also the largest number of insemination doses which could be made from one ejaculate in the case of these boars. Crossbreed boars Hamp x Dur were characterized by the highest concentration of spermatozoa (422.76 thousand per mm3). Age of young boars belonging to PLWbreed had a significant impact on all the analysed features; in the case of crossbreed boars Hamp x Dur no distinct changes in ejaculates taken from boars which were up to up to 24 months old were observed only in the concentration of spermatozoa. High breeding potential, which manifested itself in the number of insemination doses (above 20), was also observed in the case of boars belonging to PLWbreed and crossbreed boars Hamp x Dur at the second year of life.

9

Jakosc ejakulatow knurow czystorasowych urodzonych w roznych porach roku

42%

Pokrywka K. , Ruda M. , Tereszkiewicz K.

Acta Scientiarum Polonorum. Zootechnica

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2009

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tom 08

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nr 4

33-39