The Egg-Laying Rhythm of Turkeys in Cages

Woodard, A. E.; Wilson, Wilbor O.; Mather, Fred

doi:10.3382/ps.0421131

Cited by 16 publications

(8 citation statements)

References 3 publications

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“…The mean interval between successive eggs in a sequence was not affected by light treatment or sequence length and averaged about 27*0 h. This is about 0-5 to 1 h longer than the mean intervals reported by Wolford et al (1964) and Woodard et al (1964) and does not support the finding that the time between successive eggs in a sequence is reduced as its length increases (Woodard et al, 1963). For any given sequence length the interval between successive eggs was similar and did not change throughout.…”

Section: Discussioncontrasting

confidence: 75%

“…Oviposition in the turkey hen has received little attention during the last two decades, though earlier work has shown that most eggs are laid during the afternoon (Stockton and Asmundson, 1950;Kosin and Abbplanalp, 1951;Woodard et al, 1963;Wolford et al, 1964). Furthermore, Kosin and Abplanalp 152 R. PYRZAK AND T. D. SIOPES (1951) reported that oviposition time may change with length of lay in some strains of turkeys.…”

Section: Introductionmentioning

confidence: 93%

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Characteristics of oviposition patterns of turkey hens and the influence of different wavelengths of light

Pyrzak

Siopes

1989

British Poultry Science

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1. Characteristics of individual oviposition patterns of turkey breeder hens were determined for 160 d of photostimulation with fluorescent blue, green or red light and with incandescent light. 2. In all treatments most eggs were laid during the afternoon and evening. The maximum frequency occurred at 14.00 to 15.00 h (8 to 9 h after light onset); about 15% of all eggs were laid in the dark period. 3. The hourly oviposition distribution remained unchanged and was specific to individual hens throughout the study period. However, it was highly variable between hens, ranging from highly dispersed to tightly clustered. 4. The total number of clutches per hen did not differ between treatments and eggs were laid in relatively short clutches; 65% were of two eggs or fewer, 30% of three to 5 eggs and only 5% of 6 eggs or more. 5. The oviposition time of the first egg in a clutch was very variable; however, oviposition time became more clustered and uniform as the position of the egg in a clutch increased. 6. Mean time of lay, mean interval between eggs and total lag time were not influenced by light treatment. Mean interval was about 27 h for all eggs and was not influenced by clutch size. 7. Light quality at the intensity used in this study did not appear to play an important role in oviposition patterns of turkey hens.

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Section: Discussioncontrasting

confidence: 75%

Section: Introductionmentioning

confidence: 93%

Characteristics of oviposition patterns of turkey hens and the influence of different wavelengths of light

Pyrzak

Siopes

1989

British Poultry Science

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“…Maximum production occurs in the chicken in midmorning (Heywang, 1938;Fraps, 1955;Wilson and Haung, 1962) and in Japanese quail in midafternoon (Opel, 1966;Wilson and Haung, 1962). The turkey, a seasonal layer, produces the majority of its eggs during midday (Kosin and Abplanalp, 1.951;Woodard et al, 1963;Wolford et ah, 1964). In preliminary studies with the chukar partridge (Alectoris chukar) eggs were observed to be laid throughout the day's light period (Woodard et ah, 1970).…”

mentioning

confidence: 96%

Oviposition Time in the Chukar Partridge

1973

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Time of lay was measured on chukar partridge in order to determine several aspects of their oviposition pattern relative to time lag between eggs in sequences and time of lay relative to dark and light periods of the day.Time of lay was recorded continuously over a 7-week period for 20 chukars maintained under 16 hours daily light given from 0400 to 2000 hours.Approximately 96% of all chukar eggs were laid between 0800 and 1900 hours with maximum rate of lay occurring 8 to 9 hours after the onset of light. Approximately 1% of all eggs were laid in the dark period.Average time of lay of single egg sequences was at 12:45 hours of the day and about 9 hours after the onset of the light period. Initial eggs in sequences of 2 to 5 eggs were laid progressively earlier in the day as sequence size increased. The time lag between eggs in 2-egg sequences was 29.7 hours as compared to 26.3 hours for intersequence eggs in sequences of 3 to 5 eggs.The pattern of lay in the chukar and time lag between eggs in sequences of 2 to 5 eggs is comparable to that for the turkey and chicken.

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“…Wolford et al (1964a) reported that as the length of egg sequence (clutch) declined there was an increase in eggs laid later in the day and this, therefore, probably accounted for the greater number of eggs laid during the dark period. The laying of eggs after the lights were turned off (9.2 and 10.6 percent) did not indicate a failure to successfully change the oviposition pattern, since it has been reported that even under a light regime similar to that used commercially, turkey hens laid 5.5 percent of their eggs during the dark period (Woodard et al, 1963). SUMMARY When turkey hens were maintained under a light regime of 16 hours of light from 8:00 p.m. to 12:00 noon, 90.2 percent of all ovipositions occurred during the light period.…”

Section: Resultsmentioning

confidence: 92%

“…Other authors have shown a definite effect of light restriction in the pre-laying period upon subsequent egg production (Marr et al, 1956;Harper and Parker, 1957;Wilson et al, 1962;Wolford et al, 1964a). Although the pattern of oviposition in turkey hens has been studied by several investigators (Woodard et al, 1963;Stockton and Asmundson, 1950;Kosin and Abplanalp, 1951;Wolford et al, 1964b), little information exists on the regulation of oviposition time by means of artificial light. Controlled oviposition time has been demonstrated in other avian species (Warren and Scott, 1936;Arrington et al, 1962).…”

Section: Introductionmentioning

confidence: 94%