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1

Zn and Pb concentration in seminal plasma in reference to selected parameters of semiological assessment of bull semen

100%
Janicki B., Cygan-Szczegielniak D.
Folia Biologica
|
2008
|
tom 56
|
nr 1-2
97-101
2
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Content available

Amino acids content and basic chemical composition of roe deer (Capreolus capreolus L.) meat

100%
Cygan-Szczegielniak D., Janicki B.
Polish Journal of Veterinary Sciences
|
2012
|
tom 15
|
nr 4
The aim of this study was to determine the chemical composition of roe deer meat considering the animals’ sex and age and to estimate the content of amino acids in the meat from two selected groups of the animals, i.e. 2-3-year-old males and females. A further goal was to assess the biological value of proteins as compared to the FAO standard. The study has revealed that in proteins from the roe deer muscle tissue the content of exogenous amino acids (in g/100g) is higher by 20-30% on average comparing to the level of amino acids, in the FAO/WHO (1973) standard protein. Among the endogenous amino acids, the highest (in g/100 g of protein) and the lowest concentrations were found for glutamic acid and proline, respectively. The research has also shown that roe deer meat possesses a high content of protein and a relatively low content of fat.
3
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Wpływ wieku i płci saren na kruchość oraz inne cechy jakości mięśnia Longissimus lumborum

100%
Cygan-Szczegielniak D., Janicki B.
Żywność Nauka Technologia Jakość
|
2012
|
tom 19
|
nr 6
Kruchość jest jedną z najważniejszych cech jakości mięsa, a jej wartość zależy od rodzaju włókien mięśniowych, ilości i typu tkanki łącznej oraz od innych czynników, takich jak: wiek i płeć zwierząt. Celem pracy była ocena wpływu wieku i płci saren na kruchość oraz inne cechy jakości ich mięsa. Badania przeprowadzono na mięśniu longissimus lumborum (LL). Najwyższą kruchością, a zarazem najniższą wartością siły cięcia (20,37 N/cm) charakteryzowało się mięso 2 ÷ 3-letnich kóz. Najniższą zaś kruchością charakteryzowało się mięso 2 ÷ 3-letnich kozłów (38,2 N/cm). Kwasowość mięsa osiągnęła zbliżone wartości we wszystkich badanych grupach: pH₂₄ wynosiło od 5,53 do 5,57, a pH₄₈ od 5,40 do 5,46. Wodochłonność mięsa kóz była większa, a równocześnie mniejsza była w nim zawartość wody wolnej tj. od 18,96 % w mięsie 2 ÷ 3-letnich zwierząt do 19,54 % w mięsie osobników 4 ÷ 5-letnich. W przypadku kozłów zawartość wody wolnej w mięsie 2 ÷ 3-letnich samców wynosiła 20,74 %, a w mięsie osobników najstarszych (6 ÷ 7-letnich) 22,43 %. Uzyskane wyniki wskazują na zróżnicowanie wartości niektórych cech pomiędzy rozpatrywanymi grupami. Ponadto stwierdzono dodatnią zależność pomiędzy wodochłonnością a kruchością mięsa (r = 0,54; p < 0,05).
4

Influence of age and sex on the cholesterol content in roe deer's meat

100%
Cygan-Szczegielniak D., Janicki B.
Medycyna Weterynaryjna
|
2009
|
tom 65
|
nr 03
5

Hibernacja zwierzat

100%
Janicki B., Cygan-Szczegielniak D.
Medycyna Weterynaryjna
|
2006
|
tom 62
|
nr 04
366-369
The adaptation of animals to certain environmental changes increases their chances of survival. The animals which have undergone adaptation are able to synchronize their vital processes with the cyclic changes of the environment in which they exist. This process leads to establishing a certain biological balance, constantly controlled by endogenic factors. Due to the considerable drop in temperature, deficiency or lack of food, or shortening of the photoperiod, heterothermic animals, including hibernators, cease physical activities and allow for the lowering of their body temperature, thus saving large amounts of energy. This state of winter lethargy, connected with the fall of the body temperature and metabolism is called hibernation.
6

Influence of age and sex on the CLA and other fatty acids content in roe deer meat (Capreolus capreolus L.)

100%
Cygan-Szczegielniak D., Janicki B.
Folia Biologica
|
2011
|
tom 59
|
nr 1-2
7

Wpływ diety na wybrane parametry oceny poubojowej tuszek oraz jakość mięsa królików

81%
Cygan-Szczegielniak D., Stasiak K., Janicki B.
Medycyna Weterynaryjna
|
2010
|
tom 66
|
nr 12
s.839-842,tab.,bibliogr.
The aim of the study was to compare the values of selected parameters of post-slaughter carcass evaluation and rabbit meat quality indices (protein, fat and water content) depending on the type of diet used. The experiment involved 12 rabbit - crossbreeds at the age of 2 months and at a body weight of 1.5 kg. The animals were divided into two groups with regard to the type of diet administered. Group I consisted of rabbits fed on an all-mash diet, whereas group II was fed according to the typical ecological model. After 7 months of the experiment all the animals were slaughtered and afterwards the slaughter analysis was performed taking into consideration the following: pre-slaughter body weight, hot carcass weight, weight of the stomach (with or without digesta). After the cooling of the carcasses, muscle samples of the saddle and the thigh were taken for subsequent analyses. Meat quality was estimated on the basis of the determination of protein, fat and water content. It was found that the diet significantly influenced fat and water content in rabbit meat. The muscle samples taken from the ecologically fed rabbits (group II) had a higher water level (saddle - 73.58%; thigh - 74.87%) and a lower fat content (saddle - 1.31%; thigh - 1.51%) compared to the samples taken from the rabbits fed on granulated feed. No significant differences in protein content between the two experimental groups were found. The slaughter yield in both groups did not exceed 50%. The higher but statistically unconfirmed slaughter yield was obtained from rabbits fed ecologically.
8

Fundamentals of exercise physiology in horses

81%
Janicki B., Kochowicz A., Cygan-Szczegielniak D., Krumrych W.
Medycyna Weterynaryjna
|
2012
|
tom 68
|
nr 06
The aim of this paper was to assess the effect of physical exertion on horses. In the course of evolution the horse was forced to develop a number of adaptations which enabled it to survive under unfavourable natural conditions. These adaptations surpassed the ones developed by other animals and of man. During a maximal effort the horse’s heart rate as well as maximal oxygen consumption increase significantly, which is possible, among others, due to a favourable lung volume to body mass ratio in this animal. As the horse’s use always involved and still involves its physical exertion, the assessment of respiratory and circulatory system efficiency in this animal remains a vital subject of numerous studies. They analyze biochemical and blood morphology parameters, as well as the issues of the biomechanics of movement, composition and construction of muscle tissue, gas exchange.
9

Boar production capacity depending on meatiness measured alive

81%
Janicki B., Wykrzykowski M., Cygan-Szczegielniak D., Siminska E.
Annals of Animal Science. Supplement
|
2006
|
nr 2/1
10

Impact of breeding region and season on the content of some trace elements and heavy metals in the hair of cows

81%
Cygan-Szczegielniak D., Stanek M., Giernatowska E., Janicki B.
Folia Biologica
|
2014
|
tom 62
|
nr 3
11

Wplyw diety na parametry biochemiczne krwi krolikow

81%
Stasiak K., Cygan-Szczegielniak D., Janicki B.
Medycyna Weterynaryjna
|
2010
|
tom 66
|
nr 06
410-412
The aim of the research was to compare selected biochemical parameters of rabbits’ blood (crossbreeds) depending on the kind of diet. Twelve rabbits at the age of 2 months and at a body weight of 1.5 kg were chosen for this experiment. The animals were divided into two research groups depending on the kind of diet they were fed. The first group consisted of rabbits fed on an all-mash diet while the second group was fed according to a typical ecological model. After 7 months of the experiment blood was collected for analysis from each animal. In the blood serum samples, the activities of the following enzymes were determined: aspartate aminotransferase (AST), alanine aminotransferase (ALT), as were the concentration of glucose, urea, total protein, protein fractions and the lipid proflile (total cholesterol, HDL and LDL fractions) as well as the concentration of triglycerides. This research showed statistically significant diet-dependent differences among all biochemical parameters of blood apart from HDL fractions.
12

Wpływ rodzaju paszy na zawartość składników mineralnych w mięsie i wątrobie królików

81%
Cygan-Szczegielniak D., Stasiak K., Janicki B., Buczkowska J.
Medycyna Weterynaryjna
|
2012
|
tom 68
|
nr 07
The aim of the study was to determine the influence of various types of diet on the mineral content in the meat and liver of the rabbit. The experiment involved 12 two-month-old crossbreeds of 1.5 kg in body weight. The animals were divided into two groups regarding the type of diet applied. Group I consisted of rabbits fed on bulky and concentrated feeds, whereas group II was fed on a full-portion feed mix. After 7 months of the experiment, when the animals reached the age of 9 months, they were slaughtered. After cooling the carcasses, the samples of muscles (saddle and thigh) and liver were collected in order to determine the content of the following elements: Na, K, Mg, Zn, Fe and Cu. The research demonstrates that the content of the minerals varies significantly depending on the part of the carcass. The highest level of the microelements, regardless of the diet involved, was found in the liver. Apart from zinc in the thighs and iron in the liver, no statistically important differences (at p ≤ 0.05) between the groups were noted.
13

Wplyw diety na zawartosc CLA, cholesterolu oraz kwasow tluszczowych w miesie krolikow

81%
Cygan-Szczegielniak D., Stasiak K., Janicki B.
Medycyna Weterynaryjna
|
2010
|
tom 66
|
nr 04
272-275
The aim of the study was to determine the influence of diet on CLA, cholesterol and fatty acids content in the most valuable parts of rabbits’ carcasses (saddle, thigh). The research material consisted of muscles taken from 12 male rabbits (crossbreeds), at the age of 9 months and at the body weight of 3.5-4 kg. The rabbits were divided into two research groups depending on the kind of diet they were fed. The first group consisted of rabbits fed according to a typical ecological model while the second group was fed an all-mash diet. The results confirm an influence of the diet on CLA, cholesterol and fatty acids content in rabbits’ meat. The highest values of CLA content were in the thighs and saddle for group II and were 16.9 and 13.59 mg/kg of fresh tissue respectively. The meat from group I of rabbits contained a lower level of cholesterol from 28.81 mg/100 g of comber to 31.39 mg/100 g of thigh muscle while for the same parts of rabbits’ carcasses from group II these values were 29.99 and 36.03 mg/100 g respectively. It is worth noting that a more advantageous profile of fatty acids occurs in the meat from the ecological group, especially PUFA n-6 to PUFA n-3 ratio.
14

A comparison of blood buffering capacity in hibernators [Mesocricetus auratus] and non-hibernators [Mus musculus] acclimated to a cold and short photoperiod

80%
Tegowska E., Cygan-Szczegielniak D., Janicki B., Jefimow M.
Folia Biologica
|
2005
|
tom 53
|
nr Suppl.
15

Zawartość wybranych składników mineralnych w sierści jałówek w zależności od regionu hodowli i pory roku

71%
Cygan-Szczegielniak D., Stanek M., Giernatowska E., Janicki B., Gehrke M.
Medycyna Weterynaryjna
|
2012
|
tom 68
|
nr 05
The aim of this study was to analyse the concentrations of selected elements, such as copper (Cu), manganese (Mn), calcium (Ca), magnesium (Mg), iron (Fe) and zinc (Zn), in the hair of cattle from farms in areas with varying degrees of environmental contamination. The studies were performed on 116 Holstein-Friesian heifers, two years old and weighing around 550 kg. Animals originated from three breeding centers: Kombinat Rolny Sp. z o.o. - Kietrz (Opolskie Province), Hodowla Zarodowa Zwierząt Sp. z o.o. - Knyszyn (Podlaskie Province) and Ośrodek Hodowli Zarodowej Sp. z o.o. - Osięciny (Kujawsko-Pomorskie Province). Hair samples were collected in two periods: during summer (including the period from July 5 to September 6, 2005) and during winter-spring (including the period from January 4 to March 9, 2006), from the flank, just behind the costal arch. The freeze-dried samples were mineralized in an Ethos Plus microwave mineralizator, (Milestone).The tissue was weighed for mineralization, and then 6.25 cm³ of HNO₃ and H₂ O₂, mixed at a 4:1 ratio by volume, was added to 0.2 g of the tissue. Metal concentrations were determined with an atomic absorption spectrophotometer, Solar 969 (Unicam). The analysis indicated that the average content of microelements and macroelements in the hair collected from the three farms was different. Significant differences in the content of certain elements in the hair of dairy cows, kept under the same husbandry and feeding conditions may have been caused by various factors, as well as the characteristics of individual animals.
16

The content of mineral elements and heavy metals in the hair of red deer (Cervus elaphus L.) from selected regions of Poland

71%
Cygan-Szczegielniak D., Stanek M., Stasiak K., Roslewska A., Janicki B.
Folia Biologica
|
2018
|
tom 66
|
nr 3
17
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Effect of sex on the content of elements in meat from wild boars (Sus scrofa L.) originating from the Province of Podkarpacie (south-eastern Poland)

61%
Roslewska A., Stanek M., Janicki B., Cygan-Szczegielniak D., Stasiak K., Buzala M.
Journal of Elementology
|
2016
|
tom 21
|
nr 3
The aim of the study was to determine concentrations of some elements, incluing minerals and heavy metals (Na, K, Mg, Zn, Fe, Cu, Cd, Pb), in the meat (musculus longissimus dorsi) of the wild boar (Sus scrofa L.) depending on the sex of the animals. The wild boars were shot during the hunting 2011-2012 season, in the Province of Podkarpacie (województwo podkarpackie), Poland. Podkarpacie, situated in south-eastern Poland, is known for its variety of wildlife living in natural habitat. The study involved 16 animals (8 of each sex) aged 2 years. Meat samples were freeze-dried (Lyovac GT2, Finn-Aqua) and then mineralised in a microwave mineraliser (Ethos Plus, Milestone). Samples prepared in this way were later analysed for the concentration of minerals, using various techniques. The content of heavy metals (Cd and Pb) was determined by atomic emission spectroscopy, while the levels of other elements (Na, K, Mg, Zn, Fe and Cu) were assayed using an atomic absorption spectrometer. The analyses indicated no significant statistical differences between males and females in the quantity of most metals in their bodies, except copper (Cu), whose average amount was higher in meat samples from females (7.5 mg kg-1) than from males (6.15 mg kg-1) (p ≤ 0.01). The determinations of heavy metals revealed that the average lead (Pb) concentration exceeded the acceptable limit only in meat samples from males (0.13 mg kg-1). When examining the levels of minerals in wild boar meat, a positive and statistically significant correlation was found only between the average quantities of K and Mg.
18

Seasonal investigation of selected mineral contents in meat, gills, and liver of perch (Perca fluviatilis L.) from western Poland

51%
Stanek M., Andrzejewski W., Mazurkiewicz J., Janicki B., Cygan-Szczegielniak D., Roslewska A., Stasiak K., Waszak I.
Polish Journal of Environmental Studies
|
2016
|
tom 25
|
nr 1
The aim of our work was to compare the concentrations of zinc (Zn), iron (Fe), and copper (Cu) in the meat, gills, and liver of perch (Perca fluviatilis L.) caught from lakes Góreckie, Strzeszyńskie, and Wędromierz in western Poland. The study involved 30 individual fish caught in spring, summer, and autumn. The muscle samples for analyses were taken from the large side muscle of the fish body above the lateral line. Metals concentrations were determined by atomic a Solar 969 absorption spectrophotometer (Unicam). As analysis shows, concentrations of Cu, Zn, and Fe detected in perch decreased in the following order: liver > gills > meat. The accumulation of metals decreased in the following order: Fe > Zn > Cu (in all tissues), and we observed statistically significant differences in Zn, Fe, and Cu concentrations in the same tissue collected from different reservoirs and during different seasons. Considering the analyses in terms of season, the average Cu and Zn contents were highest in the tissues taken in the spring. The highest concentrations of Fe were determined in samples collected during summer. The analyses indicated that concentrations of metals in tissues of fish caught from different reservoirs also showed great variation. Analysis of PCA allowed for a very good separation of the three reservoirs and three tissues investigated.
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