Essential Minerals for Chicks and Laying Hens



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Chicks from a high and low feather pecking line of laying hens differ in apomorphine sensitivity.

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Amino Acid Recommendations for laying hens

During recent decades productivity of laying hens increased substantially (Elliot, 2008). Not only egg number, egg mass, and feed conversion has increased but also persistency of lay has improved. As such, this must have implications on the optimal amino acid nutrition of current laying hen strains. Simply stated, increasing egg mass output per hen means an increased amino acid output which has...

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Comparative gonadotrophic potency of anterior pituitaries from cocks, laying hens and non-laying hens in molt.

A bulk of studies on the assay of gonadotrophic hormone content of the anterior pituitary from the animals in various reproductive conditions has been done. Riley and Fraps(1942b) assayed pituitary glands from chickens in various reproductive stages, judging the gonadotrophic potency by the increment of uterine weights of immature mice, and concluded that glands from non-laying hens produced a ...

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The bacterium Erysipelothrix rhusiopathiae can infect a wide range of mammals (including humans) and birds. Disease outbreaks (erysipelas) have been considered unusual in chickens internationally, but outbreaks with high mortality and egg production losses have been diagnosed in Swedish laying hen flocks every year since 1998. Different aspects of E. rhusiopathiae infection in chickens were exa...

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عنوان ژورنال: Poultry Science

سال: 1925

ISSN: 0032-5791

DOI: 10.3382/ps.0040109