Est NM$ = ((Sire's NM$ + Dam's NM$)/2)
This example shows Quartile 1 - the highest 25% of Estimated NM$ animals - averages 317 NM$. Quartile 4 - the lowest 25% - averages 111 NM$.
NOTE - To ensure heifers are ranked on a level playing field, make sure both the sire and dam are identified. If only a sire or a dam's NM$ is available, that single value is still divided by two and the Estimated NM$ is ranked with all others.
The right half of the chart contains the Dam Production Data, including milk, fat and protein production compared to the rest of the herd along with average Linear Score based on SCC, reproductive performance based on her average days open and her Transition Cow Index® if the herd is on a TCI option. Heifers without pedigree information are listed in a separate section.
The GSG and all other AgSource reports are available on MyAgSource. Information can be sorted, exported and is available whenever you need it online. Click here to see the demo page for the Genetic Selection Guides for heifers.
Figure 1) Example GSG Heifer Report
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Genetic Selection Guide - Heifer
All heifers are divided into quartiles based on their Estimated NetMerit$. The average Estimated NM$ for each quartile is listed. The highest 25% (Quartile 1) have a light blue background, the second highest 25% have a yellow background and the bottom two quartiles are orange and red. This color coordination is followed throughout Block C.
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First four columns - Four types of identification are listed. Herds electing to stay on the paper report may choose whether to sort their cows by barn name, control number, or visible ID (default).
Each heifer's age is listed as of the current test day after new bull proofs genetic evaluations are generated.
Estimated NetMerit$ = ((Sire's Net Merit + Dam's Net Merit)/2). If only one parent is identified, then that parent's NetMerit$ is divided by two. Obviously, a much more accurate NM$ value is attained when both parents are listed.
NM$ is the expected additional lifetime profit an animal is expected to make compared to an average animal (average animal = 0 NM$). The profit function approach used in deriving NM$ lets breeders select for many traits by combining the incomes and expenses for each trait into an accurate measure of overall profit.
The genomic indicator identifies if the genetic proof includes information derived from genomic testing of the animal itself, its ancestors, or progeny. Heifer NM$ values that include genomic information would have higher reliability then heifers with NM$ values based on parent averages only. (insert text here)
If a pregnancy confirmation is reported to AgSource, the heifer's due date is listed here. As on other AgSource reports, the field is blank until AgSource has a recorded pregnancy confirmation.
Sire and Maternal Grandsire NAAB numbers and the Dam's ID are listed. If any of these fields are blank or incorrect, provide your Field Technician with the correct data or call AgSource Customer Service at 800-236-4995.
Dam Production Data
Sometimes the "Dam Production" columns will be blank. Generally, the reason is that the records have been archived after she had been inactive at least 14 months. Another possible reason is the dam or the animal herself may have been purchased and AgSource never received earlier records.
Even if the dam's records are now archived, USDA may have received her production information earlier and calculated a NetMerit$ value that can be used in calculating her daughter's Estimated NetMerit$ value.
The value listed reflects the most current lactation number of the animal.
Avg Dev From Herd 305 ME
Adjusting production records with Mature Equivalent 305 day factors creates a level playing field for comparing different aged dams cows with lactations longer than 305 days.
The Milk, Fat and Protein average deviations from herd 305 day Mature Equivalent are calculated on a lactation by lactation basis. For example, if a dam has three lactations, her first lactation's 305 day ME production is compared against her herdmates' 305 day ME production in the same year. The same is done on each of her subsequent lactations. The dam's 305 ME projection is used on "in progress" lactations. Then the production deviations from all lactations are averaged to create the values displayed in these columns.
Avg Days Open
This column contains the average days open of all lactations for the dam of each heifer listed. Herd owners who do not report pregnancy confirmations will have blanks in this column. A dam with no pregnancy confirmation during her current lactation will not have any value for that lactation included in her days open average. As a comparison of individual animals to a herd average, Block I of the Herd Summary has the herd's current average Days Open, PG.
Average Linear Scores are calculated by converting each cow's end of lactation average SCC to a Linear Score and then averaging all the lactation Linear Scores. The industry average Linear Score is very close to 3.0.
The Transition Cow Index® has a genetic component much like SCC does. It is also a measure of a cow's resilience. Only those herds on a TCI option will have information in this column. For those members receiving a Fresh Cow Summary, their herd's average TCI is in Block A.