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1
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Comparison of Limousine cattle with their crossbreds with Black-and-White breed managed under organic conditions on the Czarnocin farm in the years 2008–2009

100%
Czerniawska-Piatkowska E., Chocilowicz E., Mozdzynski T., Szewczuk M.
Acta Scientiarum Polonorum. Zootechnica
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2011
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tom 10
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nr 4
The aim of this study was to compare pure-bred Limousine cattle with their crossbreds with Black-and-White breed in regard to the selected zoometrical measurements, selected fertility indices as well as birth weight of calves and their daily body weight gains. The research was conducted on the Czarnocin organic farm located in theWest Pomerania Province. Purebred cows were characterized by a higher mean body weight, higher hip height and lower chest girth than crossbreds. Pure-bred individuals had slightly better fertility indices in comparison with their crossbred age mates. Significantly (P≤0.05) higher body weight and daily body weight gains at 210 days of age were found in bull calves compared with heifers.
2
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Comparison of milk production between Black-and-White Holstein-Friesian cows imported from Sweden and domestic peers

100%
Szewczuk M., Borcz A., Chocilowicz E., Czerniawska-Piatkowska E.
Acta Scientiarum Polonorum. Zootechnica
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2013
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tom 12
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nr 2
The aim of the study was to compare the milk performance, age of first calving and inter-calving interval in Holstein-Friesian black and whites imported from Sweden with domestic cows of the same breed. We also evaluated the process of birth of tested animals and body weight of newborn calves. Domestic cows were more productive and obtained better PFC (the difference between fat and protein content) and PFR values (protein to fat ratio) in both lactations. In the first lactation, animals from Poland were characterized by better average milk yield and average protein content whereas imported cows produced higher milk yields with higher fat content (P ≤ 0.01). In the second lactation Polish cattle achieved better results in terms of average yield of proteins and fat as well as protein and fat content when compared to Swedish cows (P ≤ 0.01 and P ≤ 0.05, respectively). Heifers imported from Sweden were younger at first calving (P ≤ 0.01) and required longer inter-calving intervals. Regardless of country of origin, births were not problematic, without any complications, and calves were of similar weight.
3
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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The comparison of yield, composition and quality of cow milk depending on twice-a-day and four-times-a-day milking

100%
Czerniawska-Piatkowska E., Gralla K., Szewczuk M., Chocilowicz E.
Acta Scientiarum Polonorum. Zootechnica
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2012
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tom 11
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nr 4
The aim of this study was the comparison of yield, composition and quality of cow milk depending on twice-a-day and four-times-a-day milking. The research was performed on Polish Holstein-Friesian cows of Black-and-White. It was found that milking frequency affected milk yield and composition. A higher daily milk yield was observed in winter, spring and summer for the four-times-a-day milking. Significant differences (P ≤ 0.01) were recorded in spring and summer. Somatic cell count in milk was found to be the highest in autumn in both compared groups. The differences between groups were significant (P ≤ 0.01). Is still necessary to have a real improvement quality of milk by following the appropriate procedures for its acquisition thereby enable the production of high-quality material.
4
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Comparison of Red Angus and Hereford primiparous cows based on the production parameters

100%
Czerniawska-Piatkowska E., Chocilowicz E., Szewczuk M., Wasiak A.
Acta Scientiarum Polonorum. Zootechnica
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2012
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tom 11
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nr 3
The aim of the study was to compare RedAngus and Hereford primiparous cows based on the age at first calving and body weight as well as to compare some indices of fertility, lactation yield and selected zoometrical measurements. The research was conducted on the farm located in theWest Pomerania Province. The age at first calving (AFC) and the variability of body weight were similar for both breeds. The primiparous Hereford cows were characterized by significantly (P ≤ 0.01) higher estimated lactation yield (2054.9 kg) compared with primiparous Angus cows (1992.8 kg) and significantly (P ≤ 0.01) higher values of zoometrical parameters: hip height (suitably: 135.5 cm i 132.5 cm) and chest girth (suitably: 197.0 cm and 191.6 cm).
5

Comparison of limousin and simmental primiparous cows based on the variability of age at first calving, body weight and the analysis of their growth and development

100%
Czerniawska-Piatkowska E., Szewczuk M., Chocilowicz E., Konstancik N.
Electronic Journal of Polish Agricultural Universities. Series Animal Husbandry
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2012
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tom 15
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nr 2
6

Kwasy tłuszczowe zawarte w mleku oraz ich znaczenie dla organizmu człowieka

100%
Czerniawska-Piatkowska E., Chocilowicz E., Szewczuk M., Rzewucka-Wojcik E.
Przegląd Hodowlany
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2012
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tom 80
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nr 05-06
7
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Association between beta-lactoglobulin (LGB) polymorphism and yield and composition of milk Holstein-Friesian cows imported from Sweden

100%
Czerniawska-Piatkowska E., Szewczuk M., Olszewska A., Chocilowicz E.
Acta Scientiarum Polonorum. Zootechnica
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2011
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tom 10
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nr 2
The study involved 102 Holstein-Friesian cows imported from Sweden, kept on a farm in the West Pomerania Province. Beta-lactoglobulin (LGB) genotypes were determined using PCR (Polymerase Chain Reaction) method according to Medrano andAquilar-Cordova [1990]. It was found that cows with the LGB AA genotype had the highest milk yield in all analysed 305-day lactations. The differences were significant in the third lactation (P≤0.01, P≤0.05). For the same genotype, the highest milk protein yield and content for the three analysed lactations were recorded. The highest milk fat content and yield were found in the BB homozygotes for all the analysed lactations.
8

The comparison of yield, nutritive value and technological usefulness of milk from Holstein-Friesian cows of black-and-white strain depending on the IGFI/SnaBI and IGF1R/HinfI polymorphisms

100%
Czerniawska-Piatkowska E., Szewczuk M., Chocilowicz E., Cioch B.
Electronic Journal of Polish Agricultural Universities. Series Animal Husbandry
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2013
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tom 16
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nr 3
9

Biology of Bubalus bubalis

100%
Czerniawska-Piatkowska E., Chocilowicz E., Szewczuk M.
Annals of Animal Science
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2010
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tom 10
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nr 2
107-115
10
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Związek polimorfizmu kappa-kazeiny (CASK) z wydajnością i składem mleka krów rasy polskiej holsztyńsko-fryzyjskiej odmiany czarno-białej

100%
Cioch B., Czerniawska-Piatkowska E., Chocilowicz E., Szewczuk M.
Folia Pomeranae Universitatis Technologiae Stetinensis. Agricultura, Alimentaria, Piscaria et Zootechnica
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2012
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tom 24
11

Comparison of organically raised Limousin cattle and their crosses with Black-and-White

100%
Czerniawska-Piatkowska E., Kucharski G., Chocilowicz E., Cioch B.
Zeszyty Naukowe Uniwersytetu Przyrodniczego we Wrocławiu. Biologia i Hodowla Zwierząt
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2014
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tom 74
12
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Ocena produkcyjnosci krow rasy holsztynsko-fryzyjskiej importowanych ze Szwecji i Niemiec

100%
Chocilowicz E., Czerniawska-Piatkowska E., Szewczuk M.
Acta Scientiarum Polonorum. Zootechnica
|
2010
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tom 09
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nr 3
9-18
Celem pracy było porównanie produkcyjności krów rasy hf importowanych ze Szwecji i Niemiec. Ocenie poddano również przebieg porodów badanych zwierząt w zależności od płci i masy ciała cieląt przy urodzeniu. Badania przeprowadzono w gospodarstwie zlokalizowanym w województwie zachodniopomorskim. Krowy importowane ze Szwecji uzyskały istotnie (P ≤ 0,01) wyższą wydajność mleka w pierwszej 305-dniowej laktacji w porównaniu z rówieśnicami z Niemiec. Zwierzęta z Niemiec przewyższały istotnie (P ≤ 0,01 i P ≤ 0,05) osobniki ze Szwecji pod względem wydajności tłuszczu oraz zawartości białka i tłuszczu w mleku. Krowy niemieckie charakteryzowały się korzystniejszymi wskaźnikami płodności w porównaniu z rówieśnicami ze Szwecji.
13
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Level of reproduction traits of ewes in blackhead sheep and growth of their offspring

88%
Szewczuk M., Lachowski W., Zurawski G., Chocilowicz E., Czerniawska-Piatkowska E.
Acta Scientiarum Polonorum. Zootechnica
|
2011
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tom 10
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nr 2
The investigations were carried out in a sheepfold located in the Pomeranian Province, Poland. Sheep were evaluated in terms of reproduction traits of ewes, nursing success, and the weight at birth of their lambs. The herd achieved a generally high level of reproduction traits, similar to reference values for the breed published by the Polish Sheep BreedingAssociation for the years 2005–2009. The mean fertility index for the studied period remained at a level 78.2%, prolificacy 133.8%, and lamb nursing success 86.8%, whereas the mean index of reproduction performance was 90.8%. Equally high values were observed for the growth of the offspring. Until 75 days of age, both body weight and daily gains of singles were higher compared to those of lambs born from multiple births. The ram lambs attained higher body weight and daily gains as compared to the ewe lambs of the same age.
14

Systemy odchowu piskląt indyczych

44%
Chocilowicz E.
Indyk Polski
|
2016
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nr 4
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