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    Wyświetlanie 1-6 z 6
    Tytuł:
    Induction of haploids in the genus Secale L. via androgenesis
    Autorzy:
    Bazylewska, J.
    Broda, Z.
    Mikolajczyk, S.
    Pluta, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/951248.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    haploid induction
    androgenesis
    homozygous plant
    haploid plant
    breeding cycle
    Secale
    Źródło:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2015, 96, 1
    0860-7796
    Pojawia się w:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of long-term vaccination of a breeding herd of pigs against PCV2 on reproductive parameters
    Autorzy:
    Pejsak, Z.
    Kusior, G.
    Pomorska-Mol, M.
    Podgorska, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/32499.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    long-term vaccination
    vaccination
    breeding herd
    animal breeding
    pig
    PCV2 virus
    reproductive parameter
    porcine circoviral disease
    circovirus
    sow
    animal reproduction
    reproductive cycle
    Opis:
    The objective of the study was to evaluate an efficacy of sows vaccination protocols in the herd with serious problems affecting efficacy of reproduction. The study was performed in a large pig herd with about 1200 sows. Before vaccination against PCV2, farrowing rate in this farm was about 65%. Sows, boar and replacement gilts were immunized using Circovac vaccine (Merial, France) according to producer’s recommendations. Parameters of production were analyzed since 2007 until 2010 in selected batches of sows inseminated at the same weeks of the year (17th, 18th, 19th and 20th) to eliminate seasonal variability. In total, 940 sows were subjected to the study. No significant changes in management during these years were introduced. The applied protocol of sow herd long-term vaccination proved to be very efficient. All measured production parameters: reproduction rate, number of piglets born alive, birth weight of piglets and number of piglets weaned per a litter improved after implementation of immunization program. Moreover, further improvement was observed with vaccination in the following reproduction cycles. The most spectacular effect of vaccination regarded average farrowing rate that increased from 64.76% in control group to 86.93% after basic vaccination. Two years after implementation of vaccination program this parameter reached 93.6%. Number of piglets weaned per sow per a litter improved from 10.31 to 11.74 after one year of vaccination and remained relatively stable through the following year. Simultaneously, the percentage of newborn piglets with birth weight < 1 kg decreased significantly (p < 0.05). To summarize, vaccination against PCV2 influenced positively the insemination rate, number of piglets born alive and weaned per litter as well as birth body weight and percentage of piglets weighing < 1 kg.
    Źródło:
    Polish Journal of Veterinary Sciences; 2012, 15, 1
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The possible role of cell cycle stage in mammalian cloning
    Autorzy:
    Modlinski, J A
    Grabarek, J.
    Plusa, B.
    Karasiewicz, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/2041988.pdf
    Data publikacji:
    2001
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    pig
    goat
    cell cycle
    mammal
    mice
    sheep
    animal breeding
    rat
    mouse
    cattle
    cloning
    experimental embryology
    rabbit
    cloning embryo
    Źródło:
    Journal of Applied Genetics; 2001, 42, 2; 153-176
    1234-1983
    Pojawia się w:
    Journal of Applied Genetics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Reproductive cycle and the related spatial and temporal distribution of the ninespine stickleback (Pungitius pungitius L.) in Puck Bay
    Autorzy:
    Sokolowska, E.
    Skora, K.E.
    Powiązania:
    https://bibliotekanauki.pl/articles/48433.pdf
    Data publikacji:
    2002
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    Pungitius pungitius
    ninespine stickleback
    reproductive cycle
    temporal distribution
    Puck Bay
    breeding period
    spawning
    spatial distribution
    maturity stage
    Opis:
    The cycle of gonad development and related changes in the length structure and spatial-temporal distribution of ninespine sticklebacks (Pungitius pungitius L.) in Puck Bay were studied. Observations were carried out in the shallow shore zones, as well as in the deeper epipelagic zone of the Bay. Ninespine sticklebacks reproduce in the brackish environment of Puck Bay, breeding in its warmer, inshore zones. Reproduction takes place in the spring and summer months, from April to July. One female spawns several clutches of eggs during one breeding season. The average length of ninespine sticklebacks in Puck Bay was about 40 mm, and the sex ratio in the population was close to 1:1. However, both length structure and sex ratio were subject to local and periodic variations, resulting from possible breeding-related territorial divisions. Higher gonadosomatic indices in females in early spring represented the transition of fish to the advanced vitelligenous phase. The lowest GSI of males during the breeding season indicated the termination of spermatogenesis. The completion of spawning in August started a new process of gonad restoration to prepare the fish for the next breeding season.
    Źródło:
    Oceanologia; 2002, 44, 4
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Annual reproductive cycle in two free living populations of three-spined stickleback (Gasterosteus aculeatus L.): patterns of ovarian and testicular development
    Autorzy:
    Sokolowska, E.
    Kulczykowska, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/47889.pdf
    Data publikacji:
    2006
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    free living population
    stickleback
    gonad
    environment change
    reproductive cycle
    wild population
    Oliva Stream
    natural habitat
    fresh water
    breeding
    Vistula River
    Gasterosteus aculeatus
    spermatogenesis
    vitellogenesis
    Opis:
    The annual reproductive cycle in two wild populations of three-spined stickleback was studied. Sticklebacks from the Dead Vistula River (Martwa Wisła) (brackish water) and the Oliva Stream (Potok Oliwski) (freshwater) were exposed to annual environmental changes in their natural habitats. Ovaries and livers (females), and testes and kidneys (males) were collected during 1–2 years. The gonadosomatic IG, hepatosomatic IH, nephrosomatic IN indices, kidney epithelium height (KEH) and size of oocytes were calculated. The number of mature oocytes and percentage of ovulating females were determined during the spawning season. Histological changes in the ovaries and testes were described throughout a year. Annual reproductive cycles were similar in both populations of sticklebacks. This is the first histological and morphological study carried out throughout a year, simultaneously in two wild populations of three-spined sticklebacks inhabiting different environments. An improved scale of gonadal development in conjunction with the determined indices and fecundity give a comprehensive description of the reproductive cycle. These newobserv ations, in combination with previously reported features, provide a universal scale that can be successfully used to distinguish all phases of gametogenesis in sticklebacks in different habitats.
    Źródło:
    Oceanologia; 2006, 48, 1
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of dietary arginine supplementation on body weight changes and productivity of sows
    Wpływ dodatku argininy w żywieniu loch na zmiany masy ciała i ich produkcyjność
    Autorzy:
    Bielinski, P.
    Rekiel, A.
    Wiecek, J.
    Sonta, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/2884.pdf
    Data publikacji:
    2017
    Wydawca:
    Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
    Tematy:
    animal breeding
    animal feeding
    animal nutrition
    pig
    sow
    pregnant sow
    primiparous sow
    multiparous sow
    piglet
    body mass
    weight change
    animal productivity
    reproductive cycle
    reproduction result
    piglet rearing
    rearing performance
    hybrid
    feeding experiment
    arginine
    supplementation
    Opis:
    Effect of dietary arginine supplementation on body weight changes and productivity of sows.The objective of this study was to determine whether provision of additional arginine to pregnant and lactating sows could influence body weight changes in females during reproductive cycle as well as reproductive and rearing performance of the piglets. The study included 36 F1 crossbred sows (Polish Landrace ´Polish Large White), including 12 primiparous and 24 multiparous sows, which after insemination were randomly allocated to experimental group E (6 primiparous – P and 12 multiparous – M) and control group C (6 P and 12 M). Sows from both groups received complete diets, which were fed to meet requirements. Sows from group E were supplemented with amino acid (L-arginine 98%) at 0.3 kg/ton for pregnant sows (from 4 weeks after insemination) and at 0.5 kg/ton for lactating sows. C sows were not supplemented. Feeding group (C, E) had a significant effect on sow body weight at weaning (P ≤0.01), while lactation (P, M) had a significant effect on sow body weight at mating and weaning, and also on body weight change during the weaning-to-mating period (P ≤0.01). The number of piglets born to primiparous sows from group E vs C was higher by 1.3 piglets (11.11%) (P >0.05). 28-day-old weaned piglets, reared by primiparous sows, were significantly heavier than the progeny of multiparous sows (P ≤0.01), by 0.76 kg/animal (10.08%) in group C and by 0.97 kg/animal (12.63%) in group E. Piglets from group E vs C were heavier at weaning by 0.35 kg (4.22%) when born to primiparous sows, and by 0.14 kg (1.86%) when born to multiparous sows. No group ´lactation interaction has been shown for any of the parameters studied. It seems appropriate to supplement pregnant and nursing primiparous sows with dietary arginine.
    Wpływ dodatku argininy w żywieniu loch na zmiany masy ciała i ich produkcyjność.Celem badań było wykazanie czy dodatkowa podaż argininy w żywieniu loch prośnych i karmiących ma wpływ na zmiany masy ciała samic w cyklu reprodukcyjnym oraz wyniki rozrodu i odchowu prosiąt. Badaniami objęto łącznie 36 loch mieszańców F1 (pbz x wbp), w tym 12 pierwiastek i 24 wieloródki, które po inseminacji podzielono losowo na grupy: doświadczalną - E (6 pierwiastek - P i 12 wieloródek - M) i kontrolną - C (6 - P i 12 - M). Lochy z obu grup żywiono mieszankami pełnoporcjowymi, których podaż była zgodna z zapotrzebowaniem. Dla loch z grupy E zastosowano dodatek aminokwasu (L-arginina 98%), w ilości odpowiednio: 0.3 kg/tonę dla loch prośnych (od 4. tygodnia po inseminacji) i 0.5 kg/tonę dla loch karmiących. Lochy C nie otrzymywały w/w dodatku. Stwierdzono istotny wpływ grupy żywieniowej (C, E) na masę loch przy odsadzeniu (P ≤0.01) oraz laktacji (P, M) na masę loch przy kryciu, odsadzeniu i zmianę masy w okresie odsadzenie-krycie (P ≤0.01). Liczba prosiąt urodzonych przez pierwiastki z grupy E vs C była większa o 1.3 prosięcia (11.11%) (P >0.05). 28. dniowe, odsadzone prosięta, odchowywane przez lochy pierwiastki, były istotnie cięższe niż potomstwo loch wieloródek (P ≤0.01), w grupie C o 0.76 kg/szt. (10.08%), a w grupie E o 0.97 kg/szt. (12.63%). Prosięta z grupy E vs C pochodzące od pierwiastek były cięższe przy odsadzeniu odpowiednio o 0.35 kg (4.22%), a od wieloródek o 0.14 kg (1.86%). Nie wykazano interakcji grupa x laktacja dla wszystkich badanych wskaźników. Stosowanie dodatku argininy do paszy wydaje się być uzasadnione dla prośnych i odchowujących prosięta loch pierwiastek
    Źródło:
    Annals of Warsaw University of Life Sciences - SGGW. Animal Science; 2017, 56[2]
    1898-8830
    Pojawia się w:
    Annals of Warsaw University of Life Sciences - SGGW. Animal Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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