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    Tytuł:
    Resistivity and Temperature Coefficient of Resistivity of the Fe/Zr Multilayer Films
    Autorzy:
    Luciński, T.
    Stobiecki, F.
    Powiązania:
    https://bibliotekanauki.pl/articles/1930608.pdf
    Data publikacji:
    1994-02
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.50.-y
    Opis:
    The resistivity (ρ) and temperature coefficient of resistivity (TCR) dependencies on modulation wavelength (λ) were examined in Fe/Zr multi-layer thin films. It was shown that the ρ(λ) and TCR(λ) behaviours can be explained on the basis of the assumption that the amorphous phase can be spontaneously formed during the deposition process. We found that the effective thickness of the amorphous phase was ≈2 nm per single interface.
    Źródło:
    Acta Physica Polonica A; 1994, 85, 2; 443-447
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Giant Magnetoresistance in Permalloy/Copper Multilayers
    Autorzy:
    Luciński, T.
    Stobiecki, F.
    Powiązania:
    https://bibliotekanauki.pl/articles/1955449.pdf
    Data publikacji:
    1997-02
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.30.Jt
    75.70.Cn
    Opis:
    The oscillatory behaviour of the giant magnetoresistivity versus Cu sublayer thickness was observed in Ni$\text{}_{83}$Fe$\text{}_{17}$/Cu multilayers with an oscillation period of 1 nm independently of buffer layer and substrates used in the experiment. The giant magnetoresistance field sensitivity equal to 0.02%/Oe and 0.15%/Oe for the first and the second maximum respectively, were found. It was shown that the giant magnetoresistance effect in our multilayers is not only due to the antiferromagnetic coupling between adjacent permalloy layers but also due to the superparamagnetic-like behaviour related to the existence of the intermixed interfacial areas.
    Źródło:
    Acta Physica Polonica A; 1997, 91, 2; 273-275
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Hall Effect and Magnetoresistance in Magnetic Multilayers with Alternating In-Plane and Out-of-Plane Anisotropies
    Autorzy:
    Błaszyk, M.
    Luciński, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/1813492.pdf
    Data publikacji:
    2008-02
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    73.21.Ac
    73.40.-c
    75.47.De
    75.70.-i
    72.15.Gd
    Opis:
    A direct comparison between the Hall effects and giant magnetoresistance of ferromagnetic multilayers of similar composition $(Ni_{80}Fe_{20}//Au//Co//Au)_N$ with alternating in-plane and out-of-plane magnetization direction of Co layers is presented. The characteristic features at magnetic field-dependence of giant magnetoresistance were correlated with the creation and annihilation of the stripe domains in Co layer, with perpendicular anisotropy. The nucleation field values were investigated as an Au layer thickness function. Furthermore, the in situ conductance measurement results characterised the island growth mode of the ferromagnetic layers. The percolation thicknesses were also indicated.
    Źródło:
    Acta Physica Polonica A; 2008, 113, 2; 663-668
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of the Deposition Temperature οn Magnetotransport Properties οf Ni-Fe/Au/Co/Au Multilayers
    Autorzy:
    Błaszyk, M.
    Chomiuk, P.
    Buchta, K.
    Luciński, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/1810589.pdf
    Data publikacji:
    2009-01
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    73.21.Ac
    73.40.-c
    75.47.De
    75.70.-i
    72.15.Gd
    Opis:
    A correlation between the growth process and electrical properties of $[Ni_{80}Fe_{20}(2 nm)//Au(2 nm)//Co(0.8 nm)//Au(2 nm)]_{15}$ multilayers is presented. A set of multilayers of identical composition was deposited in different temperatures. The changes in giant magnetoresistance amplitude were correlated with the changes in Co layers growth process that occur in different temperatures. The in situ conductance measurement leads to the growth mechanism identification in high temperatures as formation of Co islands. Intensified islandisation of Co was eventually confirmed by the temperature changes in shape of the Hall voltage loops, and the evolution of Co layers contribution.
    Źródło:
    Acta Physica Polonica A; 2009, 115, 1; 363-365
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Superparamagnetic Grains as Source of Giant Magnetoresistance Effect in Discontinuous Co/Ag Multilayers
    Autorzy:
    Luciński, T.
    Stobiecki, F.
    Dubowik, J.
    Czajka, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/1955447.pdf
    Data publikacji:
    1997-02
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.70.Cn
    Opis:
    The as-deposited and annealed Co/Ag discontinuous multilayer-like structures were examined. Discontinuous Co sublayers are thought to consist of fine superparamagnetic and ferromagnetic grains. Using the bimodal superparamagnetic grain sizes distribution the GMR(H) dependencies were successfully modelled with the use of two Langevin functions simulating the magnetization of the superparamagnetic grains.
    Źródło:
    Acta Physica Polonica A; 1997, 91, 2; 269-272
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Interface Mixing in Fe/Si Multilayers Observed by the In Situ Conductance Measurements
    Autorzy:
    Chomiuk, P.
    Błaszyk, M.
    Szymański, B.
    Luciński, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/1810582.pdf
    Data publikacji:
    2009-01
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    73.40.Sx
    73.50.-h
    Opis:
    In this contribution the in situ conductance vs. deposition time dependences of Fe/Si multilayers are analysed. The plot of resistance multiplied by the square of the thickness as a function of iron thickness shows that during the iron deposition initially amorphous-like Fe-Si mixture is formed, next the mixture crystallises, and finally bcc-Fe phase appears. The interface mixing is also manifested by the reduction of the total multilayer thickness measured by small angle X-ray diffraction.
    Źródło:
    Acta Physica Polonica A; 2009, 115, 1; 355-356
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Electronic Transport Properties and Growth Mechanisms of Ni-Fe/Au/Co/Au Multilayers from In Situ Conduction Measurements
    Autorzy:
    Błaszyk, M.
    Kempiński, M.
    Buchta, K.
    Chomiuk, P.
    Luciński, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/1534187.pdf
    Data publikacji:
    2010-11
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    73.50.-h
    73.61.-r
    75.70.Cn
    72.15.-v
    Opis:
    In the following we present the role of surface scattering at Au/Co and Au/Ni-Fe interfaces in Ni-Fe/Au/Co/Au multilayers deposited in different temperatures. Specularity parameter, which describes the electron scattering, is calculated from fitting in situ collected conductance data with the Fuchs-Namba-Tesanovic model. Application of the parallel resistors model enabled to depict changes between Au/Co and Au/Ni-Fe interfaces within multilayers for each repetition. The correlation between enhanced grain boundary scattering for higher deposition temperatures and surface roughness of Ni-Fe/Au/Co/Au multilayers is found.
    Źródło:
    Acta Physica Polonica A; 2010, 118, 5; 861-863
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    In Situ Conductance of Fe/Si and Fe/Ge Multilayers
    Autorzy:
    Chomiuk, P.
    Błaszyk, M.
    Luciński, T.
    Wróblewski, M.
    Susła, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/1813491.pdf
    Data publikacji:
    2008-02
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    73.40.Sx
    73.50.-h
    75.70.Cn
    Opis:
    In this paper we study Fe/Si and Fe/Ge multilayers prepared at room temperature by magnetron sputtering. In situ conductance measurements reveal the formation of interfacial Fe-Si and Fe-Ge mixtures. During the Fe deposition a modification of growth mode is noticed. Deposition of Si (or Ge) onto Fe leads to the reduction of the Fe layer thickness due to interdiffusion, and Fe-Si (or Fe-Ge) structures appear. Above about 1.3 nm of deposited Si (1.5 nm of Ge) nominally pure Si (Ge) starts growing. Surface topography of the Fe/Si multilayers is studied by atomic force microscopy.
    Źródło:
    Acta Physica Polonica A; 2008, 113, 2; 657-662
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Néels Magnetostatic Coupling in Sputtered Cu/Py/V/Py/MnIr/Cu Multilayers
    Autorzy:
    Urbaniak, M.
    Brückl, H.
    Stobiecki, F.
    Luciński, T.
    Reiss, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/2037183.pdf
    Data publikacji:
    2004-03
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.70.Cn
    68.65.Ac
    Opis:
    The correlation between magnetostatic or Néel's coupling and roughness of interfaces in sputtered Cu/Py/V/Py/MnIr/Cu multilayers was investigated with the help of atomic force microscopy and magnetometry. It is shown that the coupling strongly depends on the roughness of seed Cu layer which in turn depends on sputtering power. Roughness levels off after deposition of consecutive layers to about 0.2 nm rms.
    Źródło:
    Acta Physica Polonica A; 2004, 105, 3; 307-313
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Annealing Effect of Equiatomic Co/Pt Alloy Films
    Autorzy:
    Gontarz, R.
    Luciński, T.
    Uba, L.
    Uba, S.
    Kudryavtsev, Yu. V.
    Powiązania:
    https://bibliotekanauki.pl/articles/1930605.pdf
    Data publikacji:
    1994-02
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    81.40.Ef
    75.70.Fr
    61.50.Ks
    Opis:
    Polycrystalline as-sputtered CoPt alloy films near the equiatomic composition were characterized as consisting of a disordered fcc phase with preferred texture along [111] orientation perpendicular to the film plane. The film annealing at 600°C/16 h induces the disorder-order phase transition confirmed by X-ray diffraction. As a result of the transition an appearance of the ordered tetragonal (fct) phase of AuCuI type with c/a = 0.974 is observed. The c-axis is the easy axis of magnetization. Both longitudinal and polar Kerr hysteresis loops reveal a dramatic increase in the coercivity from 0.1 to 4.5 kOe in annealed CoPt alloy films due to ordering.
    Źródło:
    Acta Physica Polonica A; 1994, 85, 2; 427-431
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Magnetization Reversal in Cobalt Nanocolumn Structures Obtained by Glancing Angle Deposition
    Autorzy:
    Buchta, K.
    Schmidt, Ch.
    Trykowski, G.
    Biniak, S.
    Kempiński, M.
    Luciński, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/1428548.pdf
    Data publikacji:
    2012-05
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.70.Ak
    73.50.-h
    73.61.-r
    Opis:
    An advanced deposition technique known as glancing angle deposition was used to fabricate randomly seeded magnetic cobalt columnar nanostructures. The existence of nanocolumns was confirmed by the cross-section scanning electron microscopy. The evolution in the magnetization reversal mechanism as a function of the film thickness was investigated. The coercivity $H_{C}$ and $M_{R}//M_{S}$ ratio (where $M_{R}$ and $M_{S}$ denote the remanent and saturation magnetization, respectively), derived from the magnetic hysteresis loops, are discussed as a function of the angle between the external magnetic field and the surface normal. The direction of the magnetization easy/hard axis and the columns inclination angle were determined on the basis of the angular dependences of the $H_{C}$ and the $M_{R}//M_{S}$. A crossover from the coherent rotation, based on the Stoner-Wohlfarth model, to the curling reversal mode was observed.
    Źródło:
    Acta Physica Polonica A; 2012, 121, 5-6; 1222-1224
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of Temperature and Annealing on GMR in Sputtered Permalloy/Cu Multilayers
    Autorzy:
    Urbaniak, M.
    Stobiecki, F.
    Luciński, T.
    Kopcewicz, M.
    Grabias, A.
    Aleksiejew, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/2013168.pdf
    Data publikacji:
    2000-03
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.70.Ak
    75.70.Pa
    Opis:
    The influence of temperature and annealing on giant magnetoresistance of Si(100)/Cu(20 nm)/Py(2 nm)/(Cu(2 nm)/Py(2 nm))$\text{}_{100}$ multilayer (Py = Ni$\text{}_{83}$Fe$\text{}_{17}$) sputtered at room temperature in double face-to-face configuration is reported. It was found that giant magnetoresistance value, ΔR$\text{}_{GMR}$/R$\text{}_{sat}$ (where R$\text{}_{sat}$ is the resistance in saturation), monotonically decreases with increasing temperature (4.5% at 173 K to about 1% at 373 K). This results from the decrease in magnetic change of resistance, ΔR$\text{}_{GMR}$, and to the lesser extent from an increase in R$\text{}_{sat}$, though both of them are caused by the shortening of electrons mean free path. The observed almost linear decrease in giant magnetoresistance saturation field with increasing temperature is explained by temperature changes of magnetization profile. Vibrating sample magnetometer measurements revealed that the increase in temperature results in pronounced decrease in remnant to saturation magnetization ratio (M$\text{}_{r}$/M$\text{}_{s}$) suggesting that at low temperatures magnetic bridges between Py layers play an important role in magnetization process. It is shown that proper annealing, by an annihilation of bridges and/or lateral decoupling, leads to an increase in giant magnetoresistance ratio from 3.4% in as deposited state to 4.7%.
    Źródło:
    Acta Physica Polonica A; 2000, 97, 3; 539-542
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    High-Quality Ni-Fe/Cu Multilayer Films with Antiferromagnetic Coupling
    Autorzy:
    Stobiecki, F.
    Dubowik, J.
    Luciński, T.
    Szymański, B.
    Rohrmann, H.
    Röll, K.
    Schmidt, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1955455.pdf
    Data publikacji:
    1997-02
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.50.Tt
    76.50.+g
    Opis:
    We report structural and magnetic properties of Ni$\text{}_{83}$Fe$\text{}_{17}$/Cu multilayer films with various buffer layer and sublayer thicknesses of copper d$\text{}_{Cu}$ and Permalloy d$\text{}_{Py}$ deposited by face-to-face sputtering. The following features prove a good quality of our films: a well-layered structure, complete antiferromagnetic coupling with a low coupling strength (2×10$\text{}^{-5}$ J/m$\text{}^{2}$ for d$\text{}_{Cu}$=1 nm and 10$\text{}^{-6}$ J/m$\text{}^{^2}$ for d$\text{}_{Cu}$=2.1 nm) and a low coercive field which make them attractive for possible applications as giant magnetoresistance sensors.
    Źródło:
    Acta Physica Polonica A; 1997, 91, 2; 277-280
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Optical Studies of Non-Magnetic Spacer in Thin Fe/Si Multilayers
    Autorzy:
    Szuszkiewicz, W.
    Jouanne, M.
    Morhange, J.
    Chernyshova, M.
    Kowalczyk, L.
    Łusakowska, E.
    Wandziuk, P.
    Luciński, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/2044545.pdf
    Data publikacji:
    2005-11
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    68.55.-a
    75.70.-i
    78.30.-j
    Opis:
    Structures containing magnetic metallic layers attract a lot of attention because of their possible applications in the area of spintronics. The hybrid structures compatible with the Si crystal lattice parameter are of special interest. In this work the short-period Fe/Si multilayers were grown by the sputtering onto (001)-oriented Si substrate and investigated by various techniques. After the deposition, all multilayers were characterized by atomic force microscopy. The goal of the present paper was to determine the chemical composition of thin layer created at the interface in Fe/Si multilayers due to the Fe diffusion into Si, as well as to analyze the phenomena, which take place in this area. The results of the optical characterization by the Raman scattering were correlated with the magnetic properties of investigated structures (determined by means of the Kerr rotation).
    Źródło:
    Acta Physica Polonica A; 2005, 108, 5; 891-896
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Chloroplast protease/chaperone AtDeg2 influences cotyledons opening and reproductive development in Arabidopsis
    Autorzy:
    Adamiec, M.
    Jagodzik, P.
    Wyka, T.P.
    Ludwikow, A.
    Mitula, F.
    Misztal, L.
    Lucinski, R.
    Jackowski, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/56435.pdf
    Data publikacji:
    2018
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Opis:
    AtDeg2 is a chloroplast protein with dual protease/chaperone activity. Since data on how the individual activities of AtDeg2 affect growth and development of Arabidopsis thaliana plants is missing, two transgenic lines were prepared that express mutated AtDeg2 versions that have either only protease or chaperone activity and a comprehensive ontogenesis stage-based study was performed comprising wild type (WT) plants and insertional mutants that do not express AtDeg2, as well as the two transgenic lines. The repression of both AtDeg2 activities in deg2-3 mutants altered just a few phenotypic traits including the time when cotyledons were fully opened, the time when 10% flowers were open as well as the number of inflorescence branches and seed length in plants which have completed their generative development. It was demonstrated that complete opening of cotyledons as well as the number of inflorescence branches and seed length in plants which have completed their generative development required involvement of both AtDeg2 activities, whereas the time when 10% of flowers were open was controlled by AtDeg2 protease activity. These results show for the first time that the chaperone activity of AtDeg2 is needed for some elements of generative development of A. thaliana plants to proceed normally. So far, the chaperone activity of AtDeg2 was confirmed based on in vitro assays only.
    Źródło:
    Acta Societatis Botanicorum Poloniae; 2018, 87, 2
    0001-6977
    2083-9480
    Pojawia się w:
    Acta Societatis Botanicorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ poziomu zinbredowania na wyniki odchowu prosiąt w obrębie ras objętych programem ochrony
    Effect of inbreeding on reproduction performance in breeds included in conservation programs
    Autorzy:
    Szyndler-Nedza, M.
    Mucha, A.
    Rozycki, M.
    Cieminski, L.
    Blicharski, T.
    Babicz, M.
    Szulc, K.
    Lucinski, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/843656.pdf
    Data publikacji:
    2014
    Wydawca:
    Polskie Towarzystwo Zootechniczne
    Tematy:
    trzoda chlewna
    rasy rodzime
    swinia zlotnicka biala
    swinia zlotnicka pstra
    swinia pulawska
    inbred
    lochy
    wspolczynnik inbredu
    uzytkowosc rozplodowa
    prosieta
    odchow zwierzat
    Opis:
    W Polsce szczególnie zagrożone obniżeniem produkcji na skutek wzrostu inbredu są rasy świń objęte programem ochrony (złotnicka biała, złotnicka pstra oraz puławska). W rasach tych, mimo hodowli ukierunkowanej na minimalizację inbredu, stwierdza się w ostatnich latach stopniowy wzrost tego parametru. W związku z powyższym podjęto badania, których celem była ocena wpływu zinbredowania loch ras objętych hodowlą zachowawczą i inbredu prosiąt na wyniki ich odchowu. Badaniami objęto 6025 loch ras rodzimych (2971 loch rasy puławskiej, 1323 loch rasy złotnickiej białej i 1731 loch rasy złotnickiej pstrej), urodzonych w latach 2003-2011. Zebrano dane dotyczące ich miotów, tj. liczbę prosiąt urodzonych i odchowanych. Łącznie zebrano informacje o 23 829 miotach. Na podstawie uzyskanych wyników stwierdzono, że w rasach złotnickich wzrost zinbredowania matek do wartości 6,25% wpływa na poprawę wyników ich użytkowości rozpłodowej, zwiększając liczbę urodzonych prosiąt w czwartych i kolejnych miotach rasy złotnickiej pstrej (P≤0,05) oraz liczbę odchowanych prosiąt w miotach drugich i trzecich rasy złotnickiej białej (P≤0,05). Lochy o inbredzie przekraczającym 12,5% rodziły i odchowywały nieco mniej prosiąt w miotach drugich i kolejnych, jednak różnice nie były statystycznie istotne. Zinbredowanie potomstwa o wartości powyżej 12,5% miało istotny wpływ na zmniejszenie liczby urodzonych i odchowywanych prosiąt, przede wszystkim w pierwszych miotach ras złotnickich (P≤0,05). W rasie puławskiej nie stwierdzono powyższych zależności.
    In Poland, the pig breeds included in the conservation program (Złotnicka White, Złotnicka Spotted and Puławska) are at particular risk of decreased production due to an increase in inbreeding. In recent years, despite mating designed to minimize inbreeding, this parameter has gradually increased within these breeds. Therefore, a study was undertaken to determine the effect of inbreeding of sows and their litters on the rearing performance of the piglets. The subjects were 6,025 sows of native breeds (2,971 Puławska, 1,323 Złotnicka White and 1,731 Złotnicka Spotted) born between 2003 and 2011. Data were collected for a total of 23,829 litters and the number of piglets born and reared was noted. The results showed that in comparison to dam inbreeding, litter inbreeding had a greater effect on the number of piglets born and reared. Among the Złotnicka breeds, sows in which inbreeding was greater than 12.5% gave birth to and reared slightly fewer piglets in the second and later parities, but the differences were not significant. An increase in dam inbreeding to 6.25% was found to improve the reproductive performance of sows, increasing the number of piglets born in the fourth and later parities in the Złotnicka Spotted breed (P≤0.05) and the number of piglets reared in the second and third litters of Złotnicka White sows (P≤0.05). Litter inbreeding greater than 12.5% had significantly reduced the number of piglets born and reared, especially in the first parities of the Złotnicka breeds (P≤0.05). These relationships were not observed for the Puławska breed.
    Źródło:
    Roczniki Naukowe Polskiego Towarzystwa Zootechnicznego; 2014, 10, 3
    1733-7305
    Pojawia się w:
    Roczniki Naukowe Polskiego Towarzystwa Zootechnicznego
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-16 z 16

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