Example Herd A800 cow Holstein Dairy

Stature Analysis

***Important, run PROFILE command in Dairy Comp before you run the

commands on the proceeding slides

Genetic Averages by Stud Code

By CSTUD Pct Count Av AGE Av ELNM AvEMILK AvESTAT Av EPL Av EDPR

--------- ---- ------ ------- ------- ------- ------- ------- -------

1 39 253 8 489 423 0.00 5.3 2.7

7 2 13 14 237 553 1.05 1.9 0.3

11 46 302 12 440 600 0.40 4.8 1.7

14 6 36 20 423 738 0.57 4.3 1.7

29 6 41 18 325 543 -0.16 3.2 1.2

94 0 2 15 -238 -482 1.35 1.0 -0.3

147 0 1 8 168 176 -1.60 2.0 -2.2

200 1 4 21 255 158 1.60 3.5 2.2

204 0 2 4 299 -526 1.60 2.2 1.4

========= ==== ====== ======= ======= ======= ======= ======= =======

Total 100 654 11 444 524 0.23 4.8 2.0

Heifers

Command: SUM AGE ELNM EMILK ESTAT EPL EDPR BY CSTUD GO4 LACT=0

Genetic Averages by Stud Code

By CSTUD Pct Count Av AGE Av ELNM AvEMILK AvESTAT Av EPL Av EDPR--------- ---- ------ ------- ------- ------- ------- ------- ------- 1 1 7 53 115 548 0.60 2.4 1.8 7 28 223 49 123 203 0.77 1.0 -0.4 9 0 1 84 158 -62 -2.70 3.0 -1.3 11 23 178 47 175 207 0.88 1.7 0.5 14 15 120 36 262 451 1.10 1.8 1.2 29 18 141 46 257 342 0.33 2.2 1.4 54 0 1 32 -102 -165 0.00 0.0 -0.7 73 0 1 41 66 -163 0.90 3.4 0.8 76 8 64 44 125 33 1.63 0.5 -0.1 80 0 2 38 -346 -899 0.20 -1.5 -2.0 200 4 34 43 117 78 1.16 1.2 0.0 204 1 5 28 299 -526 1.60 2.2 1.4 223 0 1 67 -70 1540 2.00 -5.1 -4.4 250 1 8 32 266 -67 1.60 4.3 1.5========= ==== ====== ======= ======= ======= ======= ======= =======Total 100 786 45 181 237 0.87 1.5 0.5

Cows

Command: SUM AGE ELNM EMILK ESTAT EPL EDPR BY CSTUD GO4 LACT>0

Genetic Averages by Lactation

By LACT Pct Count Av AGE Av ELNM AvEMILK AvESTAT Av EPL Av EDPR

--------- ---- ------ ------- ------- ------- ------- ------- -------

0 45 654 11 444 524 0.23 4.8 2.0

1 18 259 29 290 409 0.91 2.5 1.1

2 17 241 42 195 202 1.03 1.3 0.6

3 12 172 56 99 161 0.83 1.1 0.0

4 6 91 68 17 10 0.66 0.4 -0.3

5 1 19 78 49 165 -0.46 0.1 -0.1

6 0 4 91 125 254 -0.40 0.9 1.2

========= ==== ====== ======= ======= ======= ======= ======= =======

Total 100 1440 30 300 369 0.60 3.0 1.2

Command: SUM AGE ELNM EMILK ESTAT EPL EDPR BY LACT GO4

Graph Estimated Stature by Age

Herd has been trending down for Estimated Stature (particularly in heifers)

Command: GRAPH ESTAT BY AGE GO4\RX84 BY LCTGP

GRAPH 305ME BY DIM LCTGPSince 305ME is generally underestimated in early lactation, 80 DIM was used as a cut point for more reliable 305MEs

Graph 305ME by Estimated Stature

DIM>80No Trend Observed; Greater Estimated Stature didn’t equate to higher 305MEs

Command: GRAPH 305ME BY ESTAT LACT\R GO4 DIM>80

Putting Cows into Quartiles

• May sometimes be difficult to quartile cows based on estimated Stature due to many cows possibly having the exact same estimated Stature value

• Count of animals per quartile will likely never be exactly the same

Method Used to Quartile Cows

• Note: The following command would be used to coincide with the effect of Stature on Production

1.Generate list of cows – Command: LIST ID ESTAT FOR LACT>0 305ME>0

DIM>80 GO4 DOWNBY ESTAT\C

2.Export list to Excel3.Determine quartile cut points in Excel

Production Averages,Estimated Stature < 0.3

By LCTGP Pct Count Av ELNM AvESTAT Av305ME Av DIM Av DOPN AvLGSCC

--------- ---- ------ ------- ------- ------- ------- ------- -------

1 23 33 268 -0.55 33514 214 133 1.0

2 37 53 163 -0.34 37340 243 121 2.5

3 41 59 81 -0.64 34997 219 142 2.3

========= ==== ====== ======= ======= ======= ======= ======= =======

Total 100 145 153 -0.50 35516 227 132 2.1

Bottom 25% of Cows Sorted by Estimated Stature; DIM>80

Command: SUM ELNM ESTAT 305ME DIM DOPN LGSCC FOR ESTAT<0.3 305ME>0 DIM>80 LACT>0 BY LCTGP GO4

In the case of this example herd, I choose ESTAT<0.3 because it was determined to be the cut point for the bottom 25% of cows in this herd when I sorted them in the Excel spreadsheet

Production Averages,Estimated Stature > 1.5

By LCTGP Pct Count Av ELNM AvESTAT Av305ME Av DIM Av DOPN AvLGSCC

--------- ---- ------ ------- ------- ------- ------- ------- -------

1 42 67 199 2.12 34341 253 157 1.6

2 45 72 153 2.24 36360 243 117 2.3

3 13 20 31 2.34 35139 218 121 2.6

========= ==== ====== ======= ======= ======= ======= ======= =======

Total 100 159 157 2.20 35356 244 134 2.0

Top 25% of Cows Sorted by Estimated Stature; DIM>80

Bottom 25% of cows sorted on Estimated Stature averaged 2.7 points less for Stature and 160 lbs more for 305ME

Command: SUM ELNM ESTAT 305ME DIM DOPN LGSCC FOR ESTAT>1.5 305ME>0 DIM>80 LACT>0 BY LCTGP GO4

Economic Impact of Stature• Current cost per lb of dry matter (DM) is 8.5 cents

– Source: http://dairy.wisc.edu/Tools/Inputs.html

• Cows typically eat 3.5% of body weight in DM and typical DMI is between 50-55 lbs per day

• Change in 1 point STA = 24 lbs in Mature Body Weight– http://www.holsteinusa.com/genetic_evaluations/ss_linear.html

• 24 lbs * 3.5% = 0.84 lbs more DM/day * 365 = 306.6 lbs more DM/year

• 306.6 * $0.085 = $26.06/cow/year• $26.06 * 1,000 cow dairy = $26,060/year

Slide courtesy of Jenny DeMunck

Effect of Stature on Feed Costs(Example Herd A)

Quartile 1 Quartile 2 Quartile 3 Quartile 4 Overall

Number of Cows 185 214 197 190 786

Average Estimated Stature per Quartile

2.16 1.21 0.49 -0.45 0.85

***Note: All cows with a valid Sire ID were included in the analysis

Command Used: LIST ID ESTAT FOR LACT>0 GO4 DOWNBY ESTAT\C

In this instance, I generated a list of all cows in the herd (milking + dry), sorted them by Estimated Stature, and then summarized the average Stature per quartile

Alternate Command: SUM DOWNBY ESTAT FOR LACT>0 GO4\ZQ4

If desired, you could have Dairy Comp quartile the cows to give you the number of cows and average ESTAT per quartile as well

Effect of Stature on Feed Costs(Example Herd A)

• Difference between Top and Bottom Quartiles– 2.61 points for Stature– 2.61 * 24 lbs * 3.5% = 2.19 lbs more DM/day * 365 = 800.23 lbs

more DM/cow/year– 800.23 lbs * $0.085 = $68.02/cow/year– $68.02 * 185 Quartile 1 cows = $12583.70/year

• Per Cow: A Quartile 1 cow will cost $68.02 more per year to feed than a Quartile 4 cow (sorted on Estimated Stature)

• Per Quartile: Quartile 1 cows will cost $12583.02 more per year to feed than Quartile 4 cows (sorted on Estimated Stature)