The Effect of Season and Estrogenic Hormones on Market Grade of Turkeys

Boone, M. A.; Morgan, C. L.; Ferrier, William T.; Miles, Jacqueline

doi:10.3382/ps.0401528

Cited by 8 publications

(2 citation statements)

References 15 publications

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“…Seasonal effects on the growth of hens, although generally acknowledged, have not been reported. From the results of Boone et al (1961), growth of Broad Breasted White hens to 18 weeks of age was best for spring-reared (summer-finished) birds, but at later ages winter rearing was best. In a survey, the most efficient confinement flocks of hens during the year were those reared from the late spring to autumn (Lance, 1983).…”

Section: Seasonmentioning

confidence: 94%

Photoperiod and seasonal influences on the growth of turkey hens

Siopes

Baughman

Parkhurst

1993

British Poultry Science

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1. The influence of photoperiod and time of year on the growth of hen turkeys was investigated. 2. Photoperiod treatments consisted of computer simulations of day lengths which occur naturally in the spring and autumn of the year. Both photoperiod treatments were given to hens in the autumn and spring. 3. Data were collected for growth evaluations at 2- to 4-week intervals to 16 weeks of age. No significant season X photoperiod interactions occurred. 4. The spring trial resulted in greater body weights and better food conversions (food/gain) than the autumn trial. 5. Simulated autumn daylengths resulted in greater body weights and improved food efficiency at 16 weeks of age compared with simulated spring daylengths. 6. The pattern of growth (period changes) was influenced by season, but not photoperiod. 7. Season and photoperiod both have important and independent influences on the growth of the turkey hen.

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