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Poultry Science, 1958 Some of the next articles are maybe not open access.
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Suspected Mycotoxicosis in Laying Hens
Avian Diseases, 1985A flock of 15,000 leghorn-type hens experienced a 10% drop in egg production. Enlarged, blue combs and diarrhea were also present. Clinical signs, postmortem and histopathological lesions, and response to therapy were compatible with a diagnosis of mycotoxin intoxication.
C L, Hofacre, R K, Page, O J, Fletcher
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Copper Deficiency in the Laying Hen
The Journal of Nutrition, 1978Copper deficiency in the laying hen resulted in anemia and the production of eggs which were abnormal in size and shape. Many of the eggs had shells which were wrinkled and rough in texture. There was also an increase in the number of shell-less eggs.
S, Baumgartner +3 more
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The effects of lindane on laying hens
British Poultry Science, 1972Synopsis Feeding lindane, in capsule form, to laying hens at a rate equivalent to 100 mg/kg food for 1 or 2 weeks had little effect on egg production. Longer periods of feeding resulted in a 20 to 30% decrease in the rate of egg production. When treatment was stopped after 4 weeks, the birds recovered and egg production returned to its original rate ...
C C, Whitehead +2 more
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Characterization of persistency of lay in laying hens
Biology of ReproductionAbstract Selective breeding in laying hens has resulted in a laying rate of approximately one egg per day during their first year. Due to variability within a flock, egg-laying rates decline after the first year, leading producers to cull hens.
Laurie Francoeur +3 more
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The laying hen and bone fractures
Veterinary Record, 2011THE laying hen has undergone considerable artificial selection pressure over the past century, to increase its egg output in order to provide a protein-rich food source for humans. While its wild counterpart will lay just five to six eggs per breeding season, modern breeds will lay in excess of 300 eggs per year (Lever 2011). With increased egg output,
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Pathogenesis of Fowlpox in Laying Hens
Avian Diseases, 1978Egg production dropped after hens were inoculated with fowlpox virus originally isolated from a natural mild infection. The drop started from the 2nd week and continued to the 5th week after inoculation. All birds developed focal lesions at the site of inoculation, and some developed secondary lesions.
D N, Tripathy, L E, Hanson
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Calcium Logistics in the Laying Hen
The Journal of Nutrition, 1987The hourly changes in the Ca2+ content of various physiological compartments in relation to shell formation has been calculated for the domestic hen throughout a 4-d ovulatory sequence. These calculations consider the circadian rhythm in Ca2+ intake when the hen is fed a complete feed or a diet containing oyster shell, the effect of the stage of the ...
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