Some factors affecting the incidence of cracks in hens’ egg shells
- 1 January 1970
- journal article
- research article
- Published by Taylor & Francis in British Poultry Science
- Vol. 11 (1), 103-116
- https://doi.org/10.1080/00071667008415796
Abstract
Six blocks of data are analysed: British Egg Marketing Board (BEMB) data on second quality eggs‐in‐shell in packing station throughput; shell thickness and colour data on 1,440 eggs sampled in 4 packing stations; crack incidence data on 162,480 individually recorded eggs from a two‐strain experimental flock kept in battery cages; similar data on 34,611 eggs from another experimental flock; shell thickness, volume and shape data on 76 eggs from 19 pairs of hens, one of each pair with a high and one with a low shell‐crack record; and BEMB data on the prevalence of battery and deep‐litter husbandry. Conclusions reached are: Implications for cage designers, breeders, egg producers and research workers are discussed.Keywords
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