Wydanie 356(55)3 2020

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https://oa.zut.edu.pl/handle/20.500.12539/687

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    PozycjaOpen Access
    Monitoring Proposal of the Species Streptocephalus Torvicornis (Waga 1842) in Poland
    (Wydawnictwo Uczelniane Zachodniopomorskiego Uniwersytetu Technologicznego w Szczecinie, 2020) Cukier, S.; Faculty of Animal Breeding, Bioengineering and Conservation, Warsaw University of Life Sciences –SGGW, Warszawa, Poland
    The paper presents a proposal of methods for monitoring the species Streptocephalus torvicornis, which belongs to large branchiopods. This species occurs in small ephemeral water bodies. Currently, there is only one known locality of S. torvicornis in Poland. Many species of large branchiopods are considered to be in danger of extinction. Their observation in the environment is hampered by the periodic nature of the occurrence of adults. The proposed method of population status assessment is based on the analysis of soil samples in terms of the presence of persistent cysts. The following factors may be used to assess the condition of the habitat: the presence of vegetation indicating the astatic or ephemeral nature of the pools, the level of succession of trees and shrubs, the presence of fish, the presence of potential sources of pollution. The proposed methods are universal and can be applied to the monitoring of other large branchiopods species. Regular monitoring may contribute to the recognition of other places of occurrence and will enable effective protection of the species S. torvicornis in Poland.
  • Miniatura
    PozycjaOpen Access
    Specific Characteristic of Sheep’s Milk and Pro-Health Properties Depending on the Somatic Cells Count
    (Wydawnictwo Uczelniane Zachodniopomorskiego Uniwersytetu Technologicznego w Szczecinie, 2020) Wrzecińska, Marcjanna; Czerniawska-Piątkowska, Ewa; Department of Ruminant Science, West Pomeranian University of Technology in Szczecin, Poland; Department of Ruminant Science, West Pomeranian University of Technology in Szczecin, Poland
    Sheep milk is a valuable product due to its properties and composition. It is richer in high-quality protein and contains more nutritional value compared to the milk of other ruminants. Raw milk is characterized by a lack of enzymatic activity and a lack of pathogenic microorganisms. Milk also has a high content of minerals. For this reason, sheep's milk is a good raw material for the dairy industry and the production of fermented milk drinks as well as cheese. During lactation, the content of individual milk ingredients and milk yield fluctuate, which translates into the nutritional value of the product. Also, the content of somatic cells in milk is significantly different between the peak and the end of lactation of animals. The increase in cellular elements is a major indicator of mammary gland infection. The cause of mastitis is bacterial infection or mechanical teat damage. Inflammation of the mammary gland is a serious problem for dairy farmers due to the health and economic aspects of this disease, which is the main cause of slaughtering ewes and the fall of many animals, as well as enforcing the cost of healing females, and the obtained milk is utilized. It is estimated that up to 60% of sheep in herds can suffer from asymptomatic mastitis, which is a serious problem for the dairy industry. That is why research is important to analyze the amount of somatic cells in milk.
  • Miniatura
    PozycjaOpen Access
    The Value of FPR Indicator in Dependence of Dairy Cows’ Body Condition in the First Month of Lactation
    (Wydawnictwo Uczelniane Zachodniopomorskiego Uniwersytetu Technologicznego w Szczecinie, 2020) Adamski, Maciej; Pacoń, Jakub; Department of Cattle Breeding and Milk Production, Wrocław University of Environmental and Life Sciences, Poland; Department of Cattle Breeding and Milk Production, Wrocław University of Environmental and Life Sciences, Poland
    The research was performed on 100 cows of Black and White Polish Holstein-Friesian breed. The studied cows were under a visual and tactile evaluation of body condition using a BCS (Body Condition Scoring) method performed on the day of parturition as well as 30th day of lactation. The observation results of the body condition changes during that period were juxtaposed with FPR. The value of that indicator was determined on the base of control milking performed on the 30th day of lactation. The aim of the research was defining the relationship between the value of FPR and the changes of cows’ body condition between the day of parturition and 30th day of lactation. The statistically significant differences (P < 0.05) of FPR value in dependence of the changes in cows’ body condition between the parturition day and 30th day of lactation were determined.