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Duration Of Fertility Of Turkeys Inseminated At Different Times After The Onset Of Photostimulation, M. R. Bakst
Duration Of Fertility Of Turkeys Inseminated At Different Times After The Onset Of Photostimulation, M. R. Bakst
United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications
To investigate the relationship between photostimulation, ovary and oviduct weights, and oviducal sperm-storage tubule (SST) development and functional capacity, 33-week-old turkey hens were placed in four groups of 15 hens each. Each group was inseminated three times in 30 min with 50 × 106 spermatozoa (a total of 150 × 106 spermatozoa) on the day of photostimulation, or on Days 7, 14, or 21 after the onset of photostimulation (Groups A, B, C and D, respectively). From weeks 4 to 8 after photostimulation, 5 additional hens were inseminated each week and then killed 24 h later to determine …
Turkey Hen Fertility And Egg Production After Artificial Insemination And Multiple Oviduct Eversion During The Pre-Laying Period, M. R. Bakst
United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications
The onset of egg production (mean 18 · 3 days after the onset of photostimulation) and the rate of egg production (flock averaged 4 · 9 eggs per bird per week for the first 8 weeks of egg production) were not affected by 5 days of twice daily oviduct eversion ('venting') in the pre-laying period when compared to unvented controls. After the onset of photostimulation, pre-laying hens were inseminated twice daily on Days 12 to 16 with 3 μl semen containing 15 × 106 spermatozoa, and compared with groups of hens inseminated once daily on Days 15 and 16 with …