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Tomasz Próchniak, Iwona Rozempolska-Rucińska, Grzegorz Zięba and Marek Łukaszewicz

References Ducro B.J., Koenen E.P.C., Van Tartwijk J.M.F.M., Bovenhuis H. (2007). Genetic relations of movement and free-jumping traits with dressage and show-jumping performance in competition of Dutch Warmblood horses. Livest. Sci., 107: 227-234. Górecka- Bruzda A., Chruszczewski M.H., Jezierski T., Murphy J. (2011). Behaviour- related traits of Polish sport horse stallions participating in 100-day performance tests. Livest. Sci., 136: 207-215. Koenen E.P.C., Aldridge L.I. (2002). Testing and genetic

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Anna Rekiel, Justyna Bartosik, Justyna Więcek, Martyna Batorska, Beata Kuczyńska and Anna Łojek

Abstract

The objective of the study was to determine how different birth weights of piglets influence some chemical and physical characteristics of pig meat. Piglets were grouped according to birth weight: ≤1.30 kg (group I), 1.31-1.70 kg (group II), ≥1.71 kg (group III). Animals were reared and fattened under standardized housing and feeding conditions. Tests were conducted with 60 samples of meat (20 per group) collected from the right side of the carcasses (M. longissimus lumborum) of threebreed crosses of (Polish Landrace × Polish Large White) × Duroc (barrows to gilts, 1:1), which were slaughtered at about 180 days of age. Determinations were made of basic chemical composition, colour of meat, drip loss, shear force value, and fatty acid profile. It was found that the birth weight of the piglets affects meat colour (redness), crude fat content and the proportion of some fatty acids (C16:1, C20:1 n-9, C20:2 n-6, C20:5 n-3).

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Zofia Sokołowicz, Józefa Krawczyk and Magdalena Dykiel

. World’s Poultry Sci. J., Suppl. 69. Clerici F., Casiraghi E., Hidalgo A., Rossi M. (2006). Evaluation of eggshell quality characteristics in relation to the housing system of laying hens. XII Eur. Poultry Conf., Verona-Italy, 10732. Dalle Zotte A., Sartori A., Bordesan V. (2013). Physical egg quality from organic versus conventional laying hens. Proc. XV Eur. Symp. on the Quality of Eggs and Egg Products, Bergamo. Bergamo 15-19 September 2013. Dudek M., Rabsztyn A. (2011). Egg quality of dual-purpose hens intended for

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Marcin Barszcz, Anna Tuśnio, Marcin Taciak, Jolanta Paradziej-Łukowicz, Marek Molenda and Andrzej Morawski

in commercial chow: implications for pathways influenced by hormones. Lab. Invest., 81: 735-747. Fell J.T., Newton J.M. (1970). Determination of tablet strength by the diametral-compression test. J. Pharm. Sci., 59: 688-691. Ford D.J. (1976). The effect of methods of sterilization on the nutritive value of protein inacommercial rat diet. Brit. J. Nutr., 35: 267-276. Nicklas W., Baneux P., Boot R., Decelle T., Deeny A.A., Fumanelli M., Illgen - - Wilcke B. (2002). Recommendations for the health monitoring of rodent and

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F. Jezˇek and H. Buchtova´

): biochemical and sensory attributes. Eur Food Res Technol 224: 545-553. Hernandez MD, López MB,A¨ lvarez A, Ferrandini E, Garc´ıa Garc´ıa B, Garrido MD ( 2009 ) Sensory, physical, chemical and microbiological changes in aquacultured meagre ( Argyrosomus regius ) fillets during ice storage. Food Chem 114: 237-245. Huss HH ( 1995 ) Quality and quaity changes in fresh fish. FAO Fisheries Technical Paper-348. Food and Agriculture Organization of the United Nations, Rome. Jezˇek F, Buchtova´ H ( 2007 ) Physical and chemical changes

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Ewa Łukaszewicz, Paulina Bagińska and Martyna Lasoń

a). Potential relationships between physical traits and male broiler breeder fertility. Poult. Sci., 82: 328-337. Mc Gary S., Estevez I., Russek - Cohen E. (2003b). Reproductive and aggressive behavior in male broiler breeders with varying fertility levels. Appl. Anim. Behav. Sci., 82: 29-44. Møller A.P. (1990). Fluctuating asymmetry in male sexual ornaments may reliably reveal male quality. Anim. Behav., 40: 1185-1187. Møller A.P. (1994). Directional selection on directional asymmetry: testes size and secondary

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Agata Marzec, Monika Michalczuk, Krzysztof Damaziak, Arleta Mieszkowska, Andrzej Lenart and Jan Niemiec

References Berardinelli A., Ragni L., Giunchi A., Gradari P., Guarnieri A. (2008). Physical-mechanical modifications of eggs for food-processing during storage. Poultry Sci., 87: 2117–2125. Cantani A. (2008). Pediatric Allergy, Asthma and Immunology. Berlin, Springer, pp. 710–713. Caudill A.B., Curtis P.A., Anderson K.E., Kerth L.K., Oyarazabal O., Jones D.R., Musgrove M.T. (2010). The effects of commercial cool water washing of shell eggs on Haugh unit vitelline membrane strength, aerobic microorganisms, and fungi. Poultry Sci., 89: 160

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Małgorzata Tabaszewska, Tadeusz Grega, Dorota Najgebauer-Lejko and Grażyna Jaworska

-286. Jędrzejkiewicz K., Florowska A. (2007). Stability and quality of non-cholesterol, low-fat mayonnaise emulsions with inulin (in Polish). Zywn.-Nauk. Technol. Ja., 5: 346-359. Kiokias S., Dimakou C., Oreopoulou V. (2007). Effect of heat treatment and droplet size on the oxidative stability of whey protein emulsions. Food Chem., 105: 94-100. Korhonen H., Pihlanto A. (2006). Bioactive peptides: production and functionality. Review. Int. Dairy J., 16: 945-960. Kryża K., Stodolnik L. (2007). The change of oxidative and physical

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Jolanta Calik, Katarzyna Połtowicz, Sylwester Świątkiewicz, Józefa Krawczyk and Joanna Nowak

References Baryiko-Pikielna N., Matuszewska I. (2009). Sensory testing of food (in Polish). Wyd. Nauk. PTTZ, 367 pp. Berri C., Le Bihan-Duval E., Debut M., Sante-Lhoutellier V, Baeza E., Gigaud V., Jego Y., Duclos M.J. (2007). Consequence of hypertrophy on characteristics of pec- toralis major muscle and breast meat quality of broiler chickens. J. Anim. Sci., 85: 2005-2011. Calik J. (2014). Capon production - breeding stock, rooster castration, rearing methods, and meat quality. Ann. Anim. Sci., 14: 769

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Iwona Janczarek, Witold Kędzierski, Anna Stachurska and Izabela Wilk

. (2009). Online detection of an emotional response ofahorse during physical activity. Vet. J., 181: 38-42. Kutte J. (2012). Humans, horses, and hybrids: On rights, welfare, and masculinity in equestrian sports. Malmöhögskola, Idrottsvetenskap, Scandinavian Sport Studies Forum, pp. 49-69. Landers T.A. (2006). Professional care of the racehorse: Aguide to grooming, feeding, and handling the equine athlete. Eclipse Press. Leiner L., Fendt M. (2011). Behavioural fear and heart rate responses of horses after exposure to novel