20.500.12556/RUL-107621 Vpliv brusnih pripomočkov na obrabo krempljev, proizvodne lastnosti in obnašanje kokoši nesnic v obogatenih kletkah The effect of claw shortening devices on claw length, performance and behaviour of laying hens in enriched cages V poskusu, ki smo ga opravili na perutninskem obratu Krumperk, smo preučevali obnašanje in proizvodne lastnosti dveh provenienc ob uporabi različnih brusnih pripomočkov. V poskus smo vključili 87 črnih prelux nesnic in 83 grahastih prelux nesnic. Poskus smo izvedli med 65. in 73. tednom starosti nesnic. Kokoši so bile uhlevljene v obogatenih, tronadstropnih kletkah. Vsaka kletka je bila opremljena s posebej nameščenimi snemljivimi koriti, dvema gredama, gnezdom in štirimi napajalniki. Spremljali smo kako različna barva brusilnega papirja vpliva na dolžino kremplja, zato smo dali v 6 kletk oranžen brusilni papir, v 6 kletk rdeč brusilni papir, 6 kletk pa smo imeli za kontrolo, kjer je bil že vstavljen brus iz perforirane pločevine. Naša glavna hipoteza je bila, da bo na dolžino kremplja vplivala barva brus papirja. Hipoteze nismo potrdili, saj med rdečim in oranžnim brusnim papirjem ni bilo statistično značilnih razlik. Druga hipoteza je bila, da bodo med proveniencama razlike v obnašanju in proizvodnosti. Hipotezo smo potrdili, saj so črne nesnice v primerjavi z grahastimi nesnicami porabile več krme, nesle večja in težja jajca, vendar so imele manjši % nesnosti. Porabile so tudi manj časa za počivanje, več časa za žretje in pitje. In the research, carried out on poultry farm Krumperk, we investigated a difference in behaviour and production characteristics between two chicken breeds with the use of different coloured grinding papers. We included 87 black and 83 spotted prelux hens, from 65 to 73 weeks of age. The hens were housed in enriched, three-storey cages. Each cage was equipped with specially mounted detachable troughs, two perches, nesting area, scratch pad and four nipple-type drinkers. We studied how the different colour of the grinding paper influences the length of the claw. We placed orange and red grinding paper in 6 cages each. Hens in the next 6 cages served as a control group with the original industrial grinding sheet metal. Our main hypothesis was that the colour of the grinding paper affects claw length. We did not confirm hypotheses, as there were no statistically significant differences between red and orange grinding paper. Our second hypothesis was that there are differences between the two breeds. We could confirm the hypothesis with black prelux hens consuming more feed, laying bigger and heavier eggs, but having a lower laying performance. They spent less time perching, but more time feeding and drinking. kokoši nesnice kremplji obraba proizvodne lastnosti obnašanje etologija poultry laying hens claws length production characteristics behaviour ethology true false false Slovenski jezik Angleški jezik Magistrsko delo/naloga 2019-05-07 10:32:27 2019-05-07 10:32:29 2022-08-19 03:50:16 0000-00-00 00:00:00 2019 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 1970-01-01 163682 4212360 6798.pdf 6798.pdf 1 AC7F7B1E86FAD791227434F417CA2742 2f4ba7458795c5530de7d8c9ea2faf48db4bc15ec18535240ea3c6528f5af458 78d24996-a1b6-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=118478 Biotehniška fakulteta 0 0 0