Seasonal Variations in Quality of Eggs as Measured by Physical and Functional Properties

Sauter, E.A.; Harns, J. Vivian; Stadelman, W. J.; McLaren, Barbara A.

doi:10.3382/ps.0330519

Cited by 12 publications

(7 citation statements)

References 8 publications

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“…The above results, advocating a significant age effect on yolk index, are partly supported by Sauter et al (1954), who found a significant but slight seasonal decline in yolk index. Moreover, Table 1 indicates that this age effect is independent of the effect of egg size, and this may be the reason that Wolk et al (1952) failed to obtain any additional benefit from correlating yolk index with egg weight in a proposed measure called " yolk factor ".…”

Section: Resultssupporting

confidence: 64%

“…2 All measures were tested after a storage period of o, 24, 48, 96 and 192 hours at 32° C. McLaren, 1954;Johnson and Merritt, 1955;Funk et al, 1958). However, Jeffrey (1941) demonstrated that albumen index of new-laid eggs was a function of age of bird between the ages of 9-18 months, and was independent of the temperature prevailing while the egg was being formed.…”

Section: Resultsmentioning

confidence: 99%

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Some characteristics of measures employed for determining the interior quality of chicken eggs¹

Bornstein¹,

Lipstein²

1962

British Poultry Science

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Section: Resultssupporting

confidence: 64%

Section: Resultsmentioning

confidence: 99%

Some characteristics of measures employed for determining the interior quality of chicken eggs¹

Bornstein¹,

Lipstein²

1962

British Poultry Science

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“…

N UMEROUS reports indicate that albumen quality declines more or less steadily throughout the first laying year (Sauter et al, 1954;Strain and Johnson, 1957;Froning and Funk, 1958;May and Stadelman, 1960;Mueller et al, 1960). The consensus of opinion is that this change is not related to seasonal changes in temperature.

…”

mentioning

confidence: 92%

Changes in Albumen Quality with Time

Wilcox

Wilson

1962

Poultry Science

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N UMEROUS reports indicate that albumen quality declines more or less steadily throughout the first laying year (Sauter et al., 1954;Strain and Johnson, 1957;Froning and Funk, 1958;May and Stadelman, 1960;Mueller et al, 1960). The consensus of opinion is that this change is not related to seasonal changes in temperature. Convincing evidence has been advanced that the decline is primarily a consequence of increasing age of the bird (Cunningham et al., 1960).There is, however, an additional explanation for the decline in albumen quality. This is that an exhaustion phenomenon is involved, and that within a given laying year or season the bird lays eggs which are successively poorer in quality because of her inability to cope with the high demands of continuous production of eggs. The change in albumen quality expected on the basis of this explanation would be precisely that expected on the basis if an explanation of aging, at least during the first laying year when birds are in more or less continuous production.One difficulty in ascribing aging as the primary cause of declining albumen quality is that all studies have confined themselves to the first two laying years. Data for many more laying years beyond these would be necessary to clearly establish an effect of aging.If an effect of exhaustion or wearing out is involved, one would expect that the eggs of high producers should show a greater decline in albumen quality during the first 1 Scientific Article No. A936, Contribution No. 3293 of the Maryland Agricultural Experiment Station, Department of Poultry Husbandry.laying year than those of low producers. This may indeed be the case, since Johnson and Merritt (1955) found, at least in White Leghorns, that eggs of higher producers tended to have lower albumen height at the end of the laying year. A second thing one would expect if exhaustion is involved is that if healthy birds stop laying eggs for a sufficiently long period, they will replenish their bodily reserves. One would then expect their albumen quality to be higher when they recommence laying eggs than just before they stopped. Berg and Bearse (1947) found that birds which had been force-molted laid eggs of higher albumen quality afterwards if they had been laying for 12 months, but this effect was not observed for birds in lay for only 10 months.The present study has sought to test the exhaustion hypothesis. This was done in two ways. One was by stopping egg production during the first laying year using progesterone, and observing the effect on albumen quality. The other way was by observing the effect of the length of stoppage of egg production between the first and second laying years (henceforth termed "pause") on the albumen quality of eggs laid at the start of the second laying year. EXPERIMENTAL PROCEDUREIn the experiment with progesterone, 115 random bred White Leghorns (King et al., 1959) hatched in April of 1959 were distributed in approximately equal numbers into two pens. In February one of the pens received an intramuscular injection of 0.5 ...

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“…Lorenz and Almquist (1936) observed that high environmental temperature depresses egg size but the percentage of firm white and shell weight remains unchanged. Sauter et al (1954) reported there was a consistent seasonal decline in the physical quality of eggs from spring to summer.…”

mentioning

confidence: 94%

The Influence of Environmental Temperature Upon Egg Components of Domestic Fowl

Carmon

Huston

1965

Poultry Science

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Seasonal Variations in Quality of Eggs as Measured by Physical and Functional Properties

Cited by 12 publications

References 8 publications

Some characteristics of measures employed for determining the interior quality of chicken eggs¹

Some characteristics of measures employed for determining the interior quality of chicken eggs¹

Changes in Albumen Quality with Time

The Influence of Environmental Temperature Upon Egg Components of Domestic Fowl

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Seasonal Variations in Quality of Eggs as Measured by Physical and Functional Properties

Cited by 12 publications

References 8 publications

Some characteristics of measures employed for determining the interior quality of chicken eggs1

Some characteristics of measures employed for determining the interior quality of chicken eggs1

Changes in Albumen Quality with Time

The Influence of Environmental Temperature Upon Egg Components of Domestic Fowl

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Product

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Some characteristics of measures employed for determining the interior quality of chicken eggs¹

Some characteristics of measures employed for determining the interior quality of chicken eggs¹