+ Site Statistics
References:
52,654,530
Abstracts:
29,560,856
PMIDs:
28,072,755
+ Search Articles
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ PDF Full Text
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Translate
+ Recently Requested

Egg weight responses of laying hens fed different concentrations of vegetable oil and linoleic acid



Egg weight responses of laying hens fed different concentrations of vegetable oil and linoleic acid



Australian Journal of Agricultural Research 43(2): 389-397



The relationshps between dietary fat content and dietary fatty acid composition and egg weight were investigated in two strains of laying hens. Six diets were fed in which the levels of readily absorbable fatty acids, including linoleic acid, were increased by the addition of up to 32.6 g kg-1 safflower oil. Two additional diets containing olive oil provided intermediate or high levels of readily absorbable fatty acids and a low level of linoleic acid. The diets were fed from 30 to 46 weeks of age (phase 1) and again from 54 to 70 weeks of age (phase 2) after an intermediate buffer period in which a diet low in both fat and linoleic acid was fed. The diets had no significant effect on feed intake, liveweight or egg mass output, although small differences in egg number occurred. Egg weight responded to increasing levels of safflower oil in the diet but not to similar levels of olive oil. These diferences cannot be attributed to dietary energy or to the intake of nutrients other than those associated with the inclusion of vegetable oil. It is concluded that the linoleic acid component of safflower oil is responsible for the observed effects on egg weight. As judged by regression analyses the egg weight response was significant in only one strain, being linear in phse 1 and curvilinear in phase 2.

(PDF emailed within 1 workday: $29.90)

Accession: 002094811

Download citation: RISBibTeXText


Related references

The response of egg weight to the inclusion of different amounts of vegetable oil and linoleic acid in the diet of laying hens. British Poultry Science 22(6): 525-532, 1981

The effect of moult on egg weight in laying hens receiving various levels of dietary linoleic acid. Proceedings 1999 Australian Poultry Science Symposium Volume No 11, University of Sydney, Sydney, NSW, February 1999: 150-153, 1999

Effects of dietary conjugated linoleic acid and linoleic:linolenic acid ratio on polyunsaturated fatty acid status in laying hens. Poultry Science 79(12): 1749-1756, 2001

A comparison of the use of conventional and semi purified diets of high and low linoleate content on the responses of laying hens to dietary linoleic acid. Journal of the Science of Food and Agriculture 26(12): 1931-1935, 1975

Linoleic acid requirement of laying hens. Poultry Sci 43(5): 1333, 1964

Ca requirement in feeds for laying hens. 1. Effect of different Ca contents on liveweight of laying hens, laying, feed intake and egg weight. Pol'nohospoddrstvo. 14: 382-388, 1968

Effect of linoleic acid on the performance of laying hens. Bulletin d' Information, Station Experimentale d' Aviculture de Ploufragan, France 23(1): 13-15, 1983

Dietary conjugated linoleic acid supplementation of laying hens: effects on egg fatty acid composition and quality. Italian Journal of Animal Science 2(Suppl. 1): 456-458, 2003

Conjugated linoleic acid alters egg yolk fatty acid composition and hepatic histopathology of laying hens. Journal of Dairy Science 84(Supplement 1): 51, 2001

Influence of dietary conjugated linoleic acid (CLA) on the fatty acid content and CLA profile of egg yolks in laying hens. Journal of Animal and Feed Sciences 14(Suppl.1): 435-438, 2005

The effects of conjugated linoleic acid (CLA) and canola oil on the fatty acid composition and quality of eggs from laying hens. South African Journal of Animal Science 35(3): 172-179, 2005

Effect of fat rich in linoleic acid on the intestinal flora of laying hens. Archiv fur Geflugelkunde 39(3): 103-107, 1975

Effects of dietary conjugated linoleic acid and oil containing unsaturated fatty acid supplementation on egg production rate and quality in laying hens. Korean Journal Of Poultry Science: 2, 131-136, 2008

Effect of dietary conjugated linoleic acid on the fatty acid composition of egg yolk, liver and adipose tissue in laying hens. Archiv fur Geflugelkunde 69(5): 213-218, 2005

Metabolizable energy value of conjugated linoleic acid for broiler chicks and laying hens. Poultry Science 80(2): 209-214, 2001