Seasonal, Strain and Hatch Effects on Egg Quality Traits

Strain, J. H.; Johnson, Amanda

doi:10.3382/ps.0360539

Cited by 20 publications

(14 citation statements)

References 11 publications

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“…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. This has been confirmed by Lorenz and Newlon (1944), Adolph (1953), Brant, Otte and Chin (1953), Halloran and Maxwell (1955), King and Hall (1955), Pope and Watts (1955), Greenwood and Bolton (1956), Strain and Johnson (1957), Lamoreux (1957), Huston (1958), Yao (1958), Cunningham, Data in Table 1 shows that there is no correlation between egg weight and Haugh units (the latter being calculated on the basis of the former), in spite of their common dependence on age of layer. Yao (1958) reported an insignificant correlation between Haugh units and egg weight, while the above earlier studies were unable to report a relationship between egg weight and percentage of thick albumen or albumen index.…”

Section: Resultssupporting

confidence: 70%

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: 70%

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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“…Knox and Godfrey, 1934;Van Wagenen, Hall and Wilgus, 1937;May, Schmidt and Stadelman, 1957;Strain and Johnson, 1957). Lorenz and Taylor (1940) found it possible to establish two lines characterised by different amounts of firm albumen.…”

Section: Albumen Qualitymentioning

confidence: 97%

“…former influenced weight losses and breaking strength; the latter determined the rate of deterioration of the contents by evaporation and gaseous exchange. Differences in both traits are inherited (Erasmus, 1954^;Strain and Johnson, 1957), but there is no clear evidence of a connection between them (Black and Tyler, 1944;Erasmus, 19543).…”

Section: Shell Qualitymentioning

confidence: 97%

The genetic basis of egg quality

Baker

1960

British Poultry Science

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Seasonal, Strain and Hatch Effects on Egg Quality Traits

Cited by 20 publications

References 11 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 genetic basis of egg quality

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Seasonal, Strain and Hatch Effects on Egg Quality Traits

Cited by 20 publications

References 11 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 genetic basis of egg quality

Contact Info

Product

Resources

About

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