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1

Value of hematological indices in ducks during their reproduction period

100%
Kontecka H., Nowaczewski S., Ksiazkiewicz J., Witkiewicz K.
Animal Science. Scientific Papers of Agricultural University of Poznan
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2006
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tom 08
2

Examination of growth hormone (GH) gene polymorphism and its association with body weight and selected body dimensions in ducks

86%
Mazurowski A., Frieske A., Kokoszynski D., Mroczkowski S., Bernacki Z., Wilkanoska A.
Folia Biologica
|
2015
|
tom 63
|
nr 1
3
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Effect of rearing system on the microbiological quality of Pekin P44 and Muscovy MR71 ducks bowel

86%
Damaziak K., Michalczuk M., Kurek A.
Annals of Warsaw University of Life Sciences - SGGW. Animal Science
|
2014
|
tom 53
In this study, we analyzed the effect of rearing system of ducks on the quantitative and qualitative composition of their gut microfl ora. 180 ducks and 180 drakes of Pekin 44 and Muscovy MR71 lines were kept in the intensive system on litter; the same number of birds was kept in the semi-intensive system. In the latter, starting from the 3rd week of life the birds were allowed to use free ranges. After slaughter of 15 ducks and 15 drakes from each group, their intestinal digesta was subjected to microbiological analysis. The possibility of using the free ranges had a positive effect on the quantitative and qualitative composition of intestinal microfl ora of these birds. The count of aerobic mesophilic heterotrophs in the intestinal digesta of ducks was higher in the case of birds kept in the semi-intensive system. More benefi cial results were achieved in the case of Muscovy ducks considering mainly the coli/lacto ratio which was the lowest (0.08) in this group for both sexes kept on free range. Noteworthy is also that no pathogenic bacteria of the genera: Salmonella, Proteus, Pseudomonas, Staphylococcus, Clostridium perfringens and Escherichia coli were found in any of the analyzed samples.
4

A rare allelic isoform Z2 of erythrocyte histone H1 in a Pekin duck population

86%
Palyga J., Kowalski A., Gornicka-Michalska E., Kisiel T., Ksiazkiewicz J.
Cellular and Molecular Biology Letters
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2002
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tom 07
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nr Suppl.
5

Size of heart of the domestic Pekin duck [Anas platyrhynchos f.domestica] and wild duck [Anas platyrhynchos, L. 1758]

86%
Charuta A., Mankowska-Pliszka H., Bartyzel B. J., Wysocki J.
Acta Scientiarum Polonorum. Medicina Veterinaria
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2005
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tom 04
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nr 2
6

Effect of in ovo injection of vitamin C during incubation on hatchability of chickens and ducks

72%
Nowaczewski S., Kontecka H., Krystianiak S.
Folia Biologica
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2012
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tom 60
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nr 1-2
7
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Computed tomographic and densitometric analysis of tibiotarsal bone mineral density and content in postnatal Peking ducks (Anas platyrhynchos var. domestica) as influenced by age and sex

58%
Charuta A., Cooper R. G.
Polish Journal of Veterinary Sciences
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2012
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tom 15
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nr 3
The bone mineral density BMD and content BMC were analysed in the tibiotarsal bones of ducks in the postnatal development as influenced by age and sex. One hundred birds from the nesting till the slaughtering maturity were included in the experiment. The analysis was conducted using a densitometer, Norland - Excell Plus and pQCT computed tomography, XCT Research SA Plus. The statistical analysis was conducted using the Kruskal-Wallis one-way analysis of variance (age) and the U-Mann -Withney test (sex). All calculations were performed in Statistica 9.0 (StatSoft, Inc. Tulsa, USA), at P ≤ 0.05. Two-factor analysis of variance ANOVA was applied and Pearson’s correlation coefficients were calculated. The densitometer research showed that BMD and BMC increased in the postnatal development for both sexes. The volumetric bone mineral density vBMD analysis using computed tomography showed that volumetric bone mineral density vBMD of the middle of the diaphyses in situ gradually attenuated during the postnatal development both in males and females, i.e. from 620 mg/cm3 (2 wk) to 500 mg/cm3 (8 wk). The biggest vBMD loss was observed in the diaphyses of females in 4 and 6 wk (r = - 0.63 and r = - 0.79; P ≥ 0.05). The BMC decrease was observed in the proximal metaphyses between 4 and 6 wk for both sexes, r = - 0.52 (males), r = - 0.53 (females); P ≤ 0.05. The gradual loss may be the cause of deformities and fractures of the tibiotarsal bones observed from 4 wk in particular bone sections of both sexes. The achieved results may constitute a helpful source of information for water poultry breeders to prevent limb diseases.
8

Carcass composition and meat characteristics of Pekin ducks in relation to age at slaughter and level of maize distiller’s dried grains with solubles in diets

58%
Kowalczyk A., Lukaszewicz E., Adamski M., Kuzniacka J.
Journal of Animal and Feed Sciences
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2012
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tom 21
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nr 1
The effect of the level of maize distiller’s dried grains with solubles (DDGS) in diets for ducks and duration of the fattening period on feed efficiency, body weight, carcass and meat quality was studied. One hundred and sixty commercial Pekin ducklings were divided randomly into four groups (four replicates, each). From 1 to 21 days of age all birds received the same commercial feed, then from day 22 to 56 the ducks were fed with a diet containing one of four levels of DDGS (%): 0 (control), 15, 25 or 30. All ducks were weighed individually at 1, 21, 49 and 56 days of age and feed intake and feed efficiency were calculated. At 49 and 56 days of rearing, 10 birds with body weights close to the average weight for the group were chosen from each group, slaughtered and the following parameters were evaluated: weight of eviscerated carcass with neck, neck without skin, wings with skin, breast and leg muscle, edible giblets (heart, liver, gizzard), skin with subcutaneous fat, abdominal fat, remainder of carcass, as well as the physical and chemical characteristics of breast meat. Inclusion of maize DDGS in amounts up to 25% in the diet of ducks from day 22 of rearing had no adverse effect on the variables studied, regardless of age at slaughter. Moreover, it allowed decreasing the soyabean meal and wheat contents from 18.0 and 41.6% in the control feed to 10.0 and 24.1% in the 25% DDGS feed, respectively.
9

Ocena cech fizycznych i skladu morfologicznego jaj kaczek Pekin ze stada rezerwowego P44

58%
Kokoszynski D., Korytkowska H., Korytkowski B.
Acta Scientiarum Polonorum. Zootechnica
|
2007
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tom 06
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nr 2
21-27
10

Changes in body composition and content of fat and protein in carcass of male and female Pekin ducks during growth

51%
Bons A., Timmler R., Jeroch H.
Zeszyty Naukowe. Przegląd Hodowlany
|
1998
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tom 36
11
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Porownanie niektorych cech miesnych kaczek ze stad zachowawczych P11 i P22

44%
Kokoszynski D.
Acta Scientiarum Polonorum. Zootechnica
|
2009
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tom 08
|
nr 3
19-26
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