Anita Zaworska-Zakrzewska

Dr. Anita Zaworska-Zakrzewska

Department of Animal Nutrition, Faculty of Veterinary Medicine and Animal Science, Poznan University of Life Sciences,
orcid

Research Focus & Metrics

Academic Career Length

14Years (2013-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 November 2018 in Poultry Science
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Journal Article
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ADAleksandra Drażbo
Aleksandra Drażbo
KOKatarzyna Ognik
Katarzyna Ognik
Anita Zaworska-ZakrzewskaAnita Zaworska-Zakrzewska
Anita Zaworska-Zakrzewska
KFKarolina Ferenc
Karolina Ferenc
JJJan Jankowski
Jan Jankowski
This study evaluated the effects of including 15% of raw or fermented rapeseed cake (RRC and FRC, respectively) in turkey diets on the growth perform

1 January 2016 in Food Technology and Biotechnology
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Journal Article
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Małgorzata Kasprowicz-PotockaMałgorzata Kasprowicz-Potocka
Małgorzata Kasprowicz-Potocka
PBPaulina Borowczyk
Paulina Borowczyk
Anita Zaworska-ZakrzewskaAnita Zaworska-Zakrzewska
Anita Zaworska-Zakrzewska
WNWłodzimierz Nowak
Włodzimierz Nowak
AFAndrzej Frankiewicz
Andrzej Frankiewicz
PGPiotr Gulewicz
Piotr Gulewicz
The effect of 24-hour fermentation of lupin seeds by different yeast strains on their chemical composition was determined. After fermentation, the mass fraction of proteins increased and their in vitro digestibility and biological activity significantly improved. The amino acid profile of fermented products was similar to that of raw lupin seeds. The significant reduction in the mass fraction of oligosaccharides and phytate, but not of alkaloids was found. The pH level of fermented products decreased as a consequence of the increase of lactic and propionic acid mass fractions. The most favourable changes in the chemical composition of blue lupin seeds were obtained in fermentation with Saccharomyces cerevisiae baker's yeast and Fermivin 7013 strain.

19 February 2022 in Animals
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Anna BuzekAnna Buzek
Anna Buzek
KSKatarzyna Serwańska-Leja
Katarzyna Serwańska-Leja
Anita Zaworska-ZakrzewskaAnita Zaworska-Zakrzewska
Anita Zaworska-Zakrzewska
Małgorzata Kasprowicz-PotockaMałgorzata Kasprowicz-Potocka
Małgorzata Kasprowicz-Potocka
Dogs are a good starting point for the description and anatomical analysis of turbinates of the nose. This work aimed at summing up the state of knowledge on the shape of the nasal cavity and airflow in these domestic animals and dealt with the brachycephalic syndrome (BOAS) and anatomical changes in the initial airway area in dogs with a short and widened skull. As a result of artificial selection and breeding concepts, the dog population grew very quickly. Modern dog breeds are characterized by a great variety of their anatomical shape. Craniological changes also had a significant impact on the structure and physiology of the respiratory system in mammals. The shape of the nasal cavity is particularly distinctive in dogs. Numerous studies have established that dogs and their olfactory ability are of great importance in searching for lost people, detecting explosives or drugs as well as signaling disease in the human body. The manuscript describes the structure of the initial part of the respiratory system, including the nasal turbinates, and compares representatives of various animal species. It provides information on the anatomy of brachycephalic dogs and BOAS. The studies suggest that further characterization and studies of nasal turbinates and their hypertrophy are important.

30 November 2020 in Animals
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Min GaoMin Gao
Min Gao
ACAdam Cieslak
Adam Cieslak
Bartosz KierończykBartosz Kierończyk
Bartosz Kierończyk
HHHaihao Huang
Haihao Huang
Yulianri Rizki YanzaYulianri Rizki Yanza
Yulianri Rizki Yanza
MSMałgorzata Szumacher
Małgorzata Szumacher
The study was conducted to evaluate the effects of partial replacement of soybean meal (SBM) by 15% raw or fermented rapeseed cake (RRC or FRC) to broilers’ diets on growth performance, nutrient utilization, methane emission, and breast muscle fatty acid (FA) composition. A total of 420 one-day-old female Ros 308 broilers were used in three independent experiments (300 birds in the first experiment and 60 in the second and third experiments). In each trial, three treatments were set up: a control group (without rapeseed), and diets replaced soybean meal with 15% addition of RRC or FRC. Birds fed the FRC diet experienced no effect (p > 0.05) on performance or nutrients utilization. Methane emission and total methanogen population in the ceca was decreased (p < 0.05) with the FRC diet. The concentrations of n-3 and n-6 FAs in the breast tissue of fourteen-day-old birds were not affected (p > 0.05) by FRC. However, the n-6/n-3 ratio in the breast muscle of 28-day-old birds was reduced (p < 0.001). In conclusion, the replacement of SBM by FRC in the broiler diets did not show any unfavorable effects on performance or nutrient utilization. Furthermore, the breast meat FA profile was improved, methanogen counts significantly decreased, and methane emission was limited.

7 November 2024 in Antioxidants
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MMMalgorzata Muzolf-Panek
Malgorzata Muzolf-Panek
Anita Zaworska-ZakrzewskaAnita Zaworska-Zakrzewska
Anita Zaworska-Zakrzewska
Anna CzechAnna Czech
Anna Czech
DLDariusz Lisiak
Dariusz Lisiak
Małgorzata Kasprowicz-PotockaMałgorzata Kasprowicz-Potocka
Małgorzata Kasprowicz-Potocka
This work investigated the effect of a plant-based phenolic supplement on the color, myoglobin forms, lipid oxidation, and antioxidative status of fresh and stored (10 days at 4 °C) meat (Longissimus thoracis et lumborum), as well as the antioxidative status of the blood and liver. The sensory quality of the meat was also evaluated for color, aroma, texture, juiciness, and palatability. Twenty-four finishing pigs, divided into two groups, were fed a basal diet and a diet with a phenolic supplement (0.1%). The supplementation increased the redness of the meat (+36% for a* and +28% for redness index), the myoglobin (Mb) content (+7%), the antioxidant activity, and the juiciness. The treatment increased the antioxidant status of meat, reflected by superoxide dismutase (SOD) activity and total glutathione (GSH + GSSG). The catalase and SOD activities and GSH + GSSG of the blood and liver were also elevated in the supplemented samples when compared to the control group. A significant effect of time was observed for all tested parameters (pH, color attributes, Mb forms, the antioxidant activity, lipid oxidation) except for the Mb content. For the stored samples, only TBARSs (thiobarbituric acid reagent substances) were affected by the diet. The slope of the plot for TBARS changes with time was significantly different between the control and treated groups (p = 0.017), which indicated a significant effect of dietary supplementation. A higher rate of lipid oxidation was observed in the control samples.

23 October 2017 in Archives of Animal Nutrition
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Closed access
PNPiotr Nowak
Piotr Nowak
Małgorzata Kasprowicz-PotockaMałgorzata Kasprowicz-Potocka
Małgorzata Kasprowicz-Potocka
Anita Zaworska-ZakrzewskaAnita Zaworska-Zakrzewska
Anita Zaworska-Zakrzewska
WNWłodzimierz Nowak
Włodzimierz Nowak
BSBarbara Stefańska
Barbara Stefańska
AFAndrzej Frankiewicz
Andrzej Frankiewicz
The aim of this study was to compare the effect of probiotic bacteria, prebiotics, phytobiotics and their combinations on performance and microbial activity in the digestive tract of growing pigs. The experiment was conducted over 28 d on 48 male pigs of about 12 kg body weight (BW), which were allocated to following treatments.: (1) Control Group (Con) without additive, (2) Group I, addition of a prebiotic (inulin), (3) Group Ph, a phytobiotic (herbal water extracts), (4) Group P, a probiotic composed of four strains of lactic acid bacteria, (5) Group PhP, phytobiotic and probiotic bacteria and (6) Group PhPI, a phytobiotic, probiotic bacteria and a prebiotic. Animal performance was recorded and at d 28 six pigs from each group were euthanised to collect digesta samples. In all groups except for Group I, diarrhoea incidents were observed. Groups Ph and P had significantly higher daily gains and final BW, and Group Ph utilised feed better than other groups. The pH of ileal digesta was significantly lower in Group PhPI. In the caecal digesta of Groups I, P and PhP, the pH level was lower than in the other groups but dry matter contents was significantly higher in Groups Con and I. The short-chain fatty acids and particular acid content differed significantly only in the colonic digesta. The yeast and mould numbers in caecal digesta was highest in Group Con. No treatment effects were observed for the number of lactic acid bacteria, coli group bacteria or Clostridium. However, the observed significantly higher number of total bacteria suggests that a multi-component eubiotic treatment changes the bacterial composition and distribution more effectively. Our findings indicated that all used additives changed the intestinal microflora, but the multi-component eubiotics were not beneficial as feed additives offered separately. Moreover, supplementation of phytobiotics and probiotic bacteria also improved the animal performance significantly.