Wydanie 318(34)2 2015

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https://oa.zut.edu.pl/handle/20.500.12539/715

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Przeglądaj Wydanie 318(34)2 2015 wg Temat "Dyscyplina::Nauki rolnicze::Zootechnika i rybactwo"

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  • Miniatura
    PozycjaOpen Access
    Dry Period Length and milk Yield in the Next Lactation
    (Wydawnictwo Uczelniane Zachodniopomorskiego Uniwersytetu Technologicznego w Szczecinie, 2015) Siatka, Kamil; Sawa, Anna; Department of Cattle Breeding, University of Technology and Life Sciences in Bydgoszcz, Poland; Department of Cattle Breeding, University of Technology and Life Sciences in Bydgoszcz, Poland
    The present review attempts to sum up the knowledge concerning the effect of dry period length on the milk yield of cows in the next lactation. The dry period is characterized by radical changes in the anatomy, histology and physiology of the mammary gland, which undergoes the stages of active involution, steady state, and colostrum production. The 60-day dry period, once considered optimal, was adopted at the beginning of the 20th century. However, the duration of this period needs to be revised because intensive breeding work that has been carried out over the last 40 years coupled with improvements in environmental conditions caused the milk yield of cows to double in many countries. Higher milk yields increased changes in cow productivity, among others by extending lactations, which possibly indicates that cows are able to produce milk for a long time, as a result of which the dry period could be shorter.
  • Miniatura
    PozycjaOpen Access
    Population of Tigers in Polish Zoos in 2000–2006
    (Wydawnictwo Uczelniane Zachodniopomorskiego Uniwersytetu Technologicznego w Szczecinie, 2015) Lasota, Bogdan; Ronowska, Anna; Department of Reproductive Biotechnology and Environmental Hygiene, West Pomeranian University of Technology, Szczecin, Poland; Department of Reproductive Biotechnology and Environmental Hygiene, West Pomeranian University of Technology, Szczecin, Poland
    Currently in the natural environment tigers live in areas of eastern Turkey, through southern Asia to southeastern Siberia, Malay Peninsula and Sumatra, Java and Bali. Generally, the area of occurrence of these predators declined and some subspecies extincted, for example Javanese tiger, Balinese tiger, the Caspian tiger. Zoos are therefore still places where you can see live the big cats. They are also held in Poland’s zoos, where increasingly various programs are carried out for breeding and reproduction of this endangered species. The aim of this study was to analyze the population of tigers and selected indicators of reproduction and mortality in 2000–2006. On the base of data from the Handbook of Zoos, which contents the information about population of animals in Polish zoos, and from cards of animals the analysis of population of Amur tigers, Bengal, Siberian and White tigers in Polish zoos were carried out. The analysis included also some reproductive indicators. Polish population of tigers in the analyzed years decreased by approx. 45%. This decrease was affected to a greater extent females. Total loss was not compensated by the number of born and rearing offspring. To maintain the number of tigers in Polish zoos require intensive efforts to increase the reproduction of this species, and the purchase or "rent" females with proven reproductive capacity.
  • Miniatura
    PozycjaOpen Access
    Selected Issues of Euthanasia of Animals: Part I – Eliminating the Suffering
    (Wydawnictwo Uczelniane Zachodniopomorskiego Uniwersytetu Technologicznego w Szczecinie, 2015) Mikuła, Małgorzata; Kulawik, Mirosława; Szlufik, Krzysztof; Rzepiński, Filip; Bartyzel, Bartłomiej J.; Nowicki, Marek; Paśko, Sławomir; Murawska, Daria; Koczoń, Piotr; Gruszczyńska, Joanna; Przysiecki, Piotr; Niemiec, Tomasz; Department of Morphological Sciences, Warsaw University of Life Sciences, Poland; Department of Animal Anatomy, Institute of Zoology, Poznań University of Life Sciences, Poland; Department of Morphological Sciences, Warsaw University of Life Sciences, Poland; Department of Morphological Sciences, Warsaw University of Life Sciences, Poland; Department of Morphological Sciences, Warsaw University of Life Sciences, Poland; Department of Food Hygiene and Public Health Protection, Warsaw University of Life Sciences, Poland; Virtual Reality Techniques Division, Warsaw University of Technology, Poland; Department of Commodity Science and Animal Improvement, University of Warmia and Mazury in Olsztyn, Poland; Department of Morphological Sciences, Warsaw University of Life Sciences, Poland; Department of Genetics and Animal Breeding, Warsaw University of Life Sciences, Poland; Institute of Agriculture, Jan Amos Komeński State School of Higher Vocational Education in Leszno, Poland; Division of Animal Nutrition, Warsaw University of Life Sciences, Poland
    Francis Bacon’s renaissance idea of alleviating the suffering of patients contributed to the creation of the concept of euthanasia and its evolution over the ages with the following change of moral and ethical attitudes in human and veterinary medicine. In the 21’st century there is an ongoing controversy around the legalisation of euthanasia in people terminally ill. On the other hand the quality and quantity of measures imposed on palliative care are improving. Various social groups are trying to justify purposefulness of euthanasia or not to allow to its legalization (Gielen et al. 2009; Łużyński 2011). In world of animals euthanasia is characterized by the willingness of alleviating suffering in devastated animals or in extreme cases threatening the life of people and other animals. In both cases motives of euthanasia can be justified by Polish law including the Constitution of the Republic of Poland.