Breed Differences in Egg Production of Domestic Fowl Held at High Environmental Temperatures ,

Huston, Till M.; Joiner, W. Perry; Carmon, J. L.

doi:10.3382/ps.0361247

Cited by 45 publications

(17 citation statements)

References 17 publications

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“…It is generally recognized that the White Leghorn breed is more tolerant of high temperature than are heavier breeds (Emmans and Charles, 1977;Huston, Joiner andCarmon, 1957 andWilson, 1949). This may be due to their combs (van Kampen, 1974), which grow larger at high temperatures (Emmans and Charles, 1977).…”

Section: Breedmentioning

confidence: 98%

5.6 Egg production at high temperatures

Marsden¹,

Morris²

1981

BSAP Occas. Publ.

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It is generally recognized that at high temperatures egg production is reduced. Although Hutchinson (1954) reported that hens will lay at 44°C, the highest constant temperature under which laying hens have been kept under research conditions is 38°C for 8 weeks (Smith and Oliver, 1972a). Both feed intake and egg output were greatly depressed and at the end of the experiment the hens were reported to be “approaching death” (Smith, 1970).

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Section: Breedmentioning

confidence: 98%

5.6 Egg production at high temperatures

Marsden¹,

Morris²

1981

BSAP Occas. Publ.

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“…There is an evidence that in an environment of 90°F (32.2°C) and higher, the temperature-regulating mechanism of the bird cannot adequately control body temperature within the normal range and it therefore rises (Heywang, 1938;Wilson, 1949). This rise produces a 'fever' (hyperthermia) which upsets the normal physiological processes sufficient to cause a decline or cessation of egg production (Huston et al, 1957).…”

Section: Introductionmentioning

confidence: 98%

Influence of high environmental temperature on egg production and shell quality: a review

Oguntunji

Alabi

2010

World's Poultry Science Journal

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In spite of the large amounts of money invested in research, breeding, and the improvement of commercial egg-type strains, high environmental temperature (HET) has been identified as a major non-genetic constraint limiting expression of their full genetic potential. This environmental stressor has been implicated in adverse marked effects on egg production and eggshell quality of hens. Reports have conclusively indicated that poor performance (i.e. drop in egg production and poor eggshell quality) of layers reared in thermally-stressed environments could be adduced to a complex interplay of low feed intake, malfunctioning of the endocrine system, acid-base imbalance and poor physiological functioning of organs and mechanisms connected with the entire egg production process, via follicular recruitment and growth, ovulation, egg formation, shell formation, egg development, oviposition and oviposition interval.

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“…However, many investigators, including Gutteridge and O'Neil (1942), King et al (1952) Gowe and Wakely (1954), Lowry et al (1956), Abplanalp (1956), Proudfoot et al (1957), McBride (1962), Becker (1961) and Proudfoot (1962), either found no such interactions or found them to be of little importance. Significant interactions were found by Osborn (1952), Skaller and Sheldon (1955), Gowe (1956), Merritt and Gowe (1956), Hill and Nordskog (1956), Huston and Joiner (1957), Johnson and Asmundson (1957), Nordskog and Kempthorne (1958), King and Bray (1959), Dickerson (I960), Abplanalp and Menzi (1961) and Abplanalp el al. (1962).…”

Section: Introduction G Enotype By Environment Interac-mentioning

confidence: 80%