Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 6 of 6 for “"turkey hen"”.
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The effects of LED light flicker on turkey hen production, health, and welfare to 11 weeks of age
… light-emitting-diode flicker on Nicholas Select turkey hens (n=3267) to 11 weeks (wk) of age. There were three treatments: the 30 Hertz (Hz) treatment (30HZ) the 90 Hz treatment (90HZ) and the 195 Hz treatment (195HZ). Birds were randomly assigned to nine independently controlled rooms (364 …
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Characterization of Pituitary Protein Expression Patterns During Stages in the Reproductive Cycle of Turkey Hens
Improvements in turkey reproductive efficiency is a very desirable goal for the turkey industry. The ability to maintain turkey hens in the egg-laying (LAY) stage and produce one additional egg per hen a year is estimated to save the turkey industry approximately $1.5 million dollars per year. …
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The Mapping of Transcription Factor Binding Sites in the Turkey Prolactin Gene
… egg-laying during the incubation period of the turkey hen is a source of major economic loss to the turkey industry. In August of 2000 there were approximately 2.7 million turkey breeder hens in the United States. Since the value of one fertile turkey egg is $0.62, the loss of only one egg per …
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The relationship between humoral and local anti-sperm antibody production and infertility in turkey breeder hens
… were conducted to determine the role of the turkey hen’s immune system in the so-called seasonal decline in fertility. Results from Experiment I demonstrated that trauma to the oviduct induced either at the time of the initial artificial insemination, or during subsequent inseminations had no …
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The effect of protein and energy self-selection on the reproductive performance of turkey hens
… on the reproductive performance of Large White turkey hens. The first study examined the effect of self-selection on reproductive performance during a production cycle that started in July and ended in December. Hens were maintained on one of two dietary regimes for a 20-week production cycle. …
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Behavioral ecology of wild turkeys
Wild turkey (Meleagris gallopovo) hens are solitary and cryptic during the reproductive season, sensitive to observer presence near the nest site, and as a result our understanding of their incubation behavior is limited to a handful of studies. Lacking this important behavioral information, it …