Also Available:
Standard Version
— straightforward table format without the added features.
Search Parentage By
Enter the offspring genotype exactly as you know it. Omitted loci use the calculator's normal default states.
Click on an image to enlarge and again to return
When multiple varieties are selected, results will show only parent pairings capable of producing ALL selected varieties.
Calculating
The following are possible breedings, showing sires and their dam combinations with the calculated percentage chance of producing each requested variety and sex.
Click on an image to enlarge and again to return
Advanced Parentage Calculator Instructions & Features
Porter's Turkey Parentage Calculator works in reverse. Enter the offspring variety or genotype you want to produce and the calculator searches for possible sire and dam combinations capable of producing it.
Search by Variety Name
Select Variety Name, begin typing the desired variety, and choose it from the suggestions. Select Male, Female, or Either Sex, then select Calculate Parents.
Search by Known Genotype
Select Known Genotype when you already know the offspring genotype. Enter the genotype and the calculator will identify the mapped variety when one is available. Loci that are not entered use the calculator's normal default states.
The E and N loci are sex-linked. Male and female genotype forms can therefore be different. When Either Sex is selected, the calculator considers and displays the appropriate male and female forms.
Search for Multiple Offspring
Select + Add Another Offspring Variety to search for a parent pairing capable of producing more than one desired offspring. Up to five offspring can be entered. Results must be capable of producing ALL offspring included in the search.
Number of Parent Pairings
Choose how many possible parent pairings you want displayed: 5, 10, 25, 50, 100, or All. Larger searches can take longer to calculate.
Understanding the Results
Results show possible sire and dam combinations and the calculated percentage probability for the requested offspring. Results are ranked to favor useful, genetically simpler parent combinations and stronger probabilities when appropriate.
The first result is not the only possible breeding. Review the available pairings and choose the one that best fits the birds and genetics available in your breeding program.
Offspring Images
Images are displayed when available. Tap or click an image to enlarge it, then tap or click it again to return. Images are visual references; individual birds can naturally vary in appearance.
Grandparents
The Grandparents feature takes a selected parent back another generation and searches for possible Grandsire x Granddam combinations capable of producing that parent.
Show All Possible Offspring
Use Show All Possible Offspring on a parent pairing to see the other mapped offspring that breeding may produce, rather than only the offspring originally requested.
Removing an Offspring
Select Remove beside an offspring entry to remove it. Remaining entries move upward automatically. Existing calculated results are cleared because they were based on the previous set of offspring selections.
Reset Search
Select Reset Search to clear the current entries and results and begin a completely new parentage search.
Longer Calculations
Some searches are much more complex than others, especially searches for several offspring or when All parent pairings is selected. If the calculator displays Calculating..., allow it to finish rather than pressing Calculate repeatedly.
Important: Calculated percentages are genetic probabilities, not guarantees. For example, a calculated 25% probability does not guarantee that exactly one out of every four poults will be that variety. Actual results from a limited hatch can vary because inheritance is random.
The calculator can only identify varieties and genotypes currently included in Porter's genetic mapping system. Mappings may be revised or expanded as additional turkey color-genetics information becomes available.
