| Автор | Abrahamsson, Per |
| Автор | Tauson, Ragnar |
| Дата выпуска | 1995 |
| dc.description | AbstractIn two experiments, a total of 4346 laying hens housed in battery cages, with three hens per cage (C), and in two aviary systems, both with tiered wire floors and litter (Lövsta with two tiers (L) and Marielund with three tiers (M)), were used for studies on production, egg quality, health, plumage and foot condition, bone strength and bird location. Three hybrids were used: Lohmann Selected Leghorn (LSL) were kept in all three systems, Dekalb XL (DK) were kept in both aviaries and Lohmann Brown (LB) in M only. Production and feed conversion in M were inferior but not significantly different from C but significantly better than in L. Proportions of dirty eggs were significantly higher in the avaries. No significant differences were found in interior egg quality traits between keeping systems. LSL showed higher production and better feed conversion than the other hybrids and a tendency for a lower proportion of mislaid eggs. Mortality varied considerably between the aviary pens, reaching 35% in LB mainly owing to cannibalism and salpingitis. Keel bone lesions and bumble foot appeared in the aviaries, while toe pad hyperkeratosis was observed in C. Hens in aviaries had significantly stronger bones (tibia and humerus) and showed more wounds from pecks, inferior plumage condition and dirtier feet than in C. LSL had more bumble foot injuries than LB but better plumage condition than DK. The birds used the different parts in the aviaries well, especially the perches on the resting top tier during the night. |
| Формат | application.pdf |
| Издатель | Taylor & Francis Group |
| Копирайт | Copyright Taylor and Francis Group, LLC |
| Тема | behaviour |
| Тема | foot condition |
| Тема | housing systems |
| Тема | plumage |
| Название | Aviary Systems and Conventional Cages for Laying Hens: Effects on Production, Egg Quality, Health and Bird Location in Three Hybrids |
| Тип | research-article |
| DOI | 10.1080/09064709509415851 |
| Electronic ISSN | 1651-1972 |
| Print ISSN | 0906-4702 |
| Журнал | Acta Agriculturae Scandinavica, Section A – Animal Science |
| Том | 45 |
| Первая страница | 191 |
| Последняя страница | 203 |
| Аффилиация | Abrahamsson, Per; Department of Animal Nutrition and Management, Swedish University of Agricultural Sciences. Funbo-Lövsta Research Centre |
| Аффилиация | Tauson, Ragnar; Department of Animal Nutrition and Management, Swedish University of Agricultural Sciences. Funbo-Lövsta Research Centre |
| Выпуск | 3 |
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