Choline in the Nutrition of Laying Hens
نویسندگان
چکیده
منابع مشابه
Nutrition/Mortality Interactions in Laying Hens
A laying trial compared two Australian egg laying strains with an imported brown egg layer. They were fed a high quality diet recommended for the imported bird or a good Australian layer diet. In addition, these two diets were fed in a free-choice system whole wheat, protein concentrate and limestone chips. The birds throughout received standard husbandry regarding vaccinations and lighting. Al...
متن کاملThe Possibility of Using Watermelon Waste in Laying Hens Diets
In this experiment 240 Hy-Line (W-36) laying hens from 65 to 75 weeks distributed in 5 treatments and 4 replicates (12 birds per replicate) in a completely randomized design were used. The amounts of watermelon skin meal (WSM) used to set the treatments were 0, 0.5, 1, 1.5 and 2% in 1 to 5 experimental groups. The results showed that using WSM up to 2% significantly improved the performance and...
متن کاملErysipelothrix rhusiopathiae in Laying Hens
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...
متن کاملThe Effect of Disease, Nutrition and Management on Egg and Eggshell Quality in Laying Hens
Egg and eggshell quality were assessed under three different circumstances: challenge with infectious bronchitis virus (IBV) of complete-fed and choice-fed Isa Brown laying hens; the provision of calcium supplement in the form of either oyster shell or limestone chips and either choice-fed or included in a complete ration; a comparison of three different strains before, during and after an indu...
متن کاملComparative 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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ژورنال
عنوان ژورنال: Poultry Science
سال: 1946
ISSN: 0032-5791
DOI: 10.3382/ps.0250646