2 HW EPD Sire Buyer Lab S23 d1

docx

School

Iowa State University *

*We aren’t endorsed by this school

Course

226

Subject

Business

Date

Apr 3, 2024

Type

docx

Pages

3

Report

Uploaded by JusticeThunder13663

2 HW EPD Review from Sire Buyer Lab S23 AnS 226 Directions This assignment will help with learning EPD interpretation and use. There are 7 questions to complete. Fill in your responses in the text boxes provided and then upload back to Canvas. Be sure to ask with questions, and also there are a number of good references in our Canvas folder for you to use too. Questions Here are a pair of bulls (see the last page of this handout) that were just sold in January at the National Angus Sale. Genetically, these are good bulls. The differences are not that big for most any trait, but this does show you the abundance of genetic evaluation information that can be made available for cattle breeders as they make their selections. The genetic evaluations reported for these bulls are their “EPDs”. 1. For what does EPD stand? Expected Progeny Difference 2. There are two reasons why I would want to use Emerald if I were going to mate him to first calf females and I wanted to make sure I minimize dystocia. What are those reasons? With his -3.6 BW EPD he is definitely the more favorable bull for breeding to heifers to ensure an easy calf. With that he has an awesome CED of +18.6 as he is the top 1% of the breed in each scenario. 3. Which one is going to sire females that, when those daughters enter the cow herd, will cost less to feed per year. Which bull and why do can we say this? How much saved per head? Hometown is just $1.00 better in this category thus he is the better option. 4. Which bull should sire the most profitable offspring if the calves are retained through the feedlot phase of production? Why is it this bull? How much more net return per head of offspring is predicted on average between these two sires? Hometown would be the more profitable through his offspring in the feedlot due to his higher $G EPD at +99 whereas his counterpart is only +68. He does consistently have the better grow numbers and based on paper he will produce offspring with more value on the rail. The difference of the expected value return is a gap of 31 and together they add to 167. 5. Which bull should sire daughters that will average heavier offspring at weaning because of their lactation ability? Why? Which bull will sire heavier calves at weaning if bred to the same kind of cows? Why? Hometown will sire both the largest calves and the better milking daughters in this case. With his milk sitting at +29 he shows to the growth driven bull. With that he will sire heavier calves at weaning as well if bred to similar cows. His WW is at +90 while the other bull is only at +63. 6. BEPD in this sale catalog stands for birth weight EPD. Interpret the difference between the two bulls, paying close attention to the terminology that we indicated in class (aka – state it the way we said to state it to get it right). The lot 42 bull, “Emerld” is the more calving ease driven sire in the pair.
There are a lot of EPDs reported for these two bulls. We will eventually define them as we go through the semester. But while we are at this point, remember that some of these EPDs have a ‘$’ in front of them (for example, $W, $C, $ B and so on. . . ). These, and others like them are called ‘index EPDs’. They can vary from breed to breed. Take a look at some examples noted here. 7. What is the purpose (use, intent) of an index EPD versus a single trait EPD? Index EPD is able to show lots of calves differences rather than just one single trait. This can also show the consistency of a sire in order to truly understand his breeding potential. Index EPDs are calculated by using information from research where each piece of information is weighted by its significance Note that the two bulls referenced in this assignment are on the next page. What are $value indices? n Allows selection for profitability based on comprehensivebreeding/management goal. n Combination, weighting of multipletraits and relativeeconomic impact n Directional change (albeit smaller) in multiple traits n Reported as onevalue used to rank . Gelbvieh ■ $Cow ◆ $ profit/head when retained as replacement . . aka. maternal productivity. ◆ Includes stayability/reproductiveeff. as well as milk, calving ease, moderatemature weight and theability of calves to gain. ◆ traits such as feed efficiency and carcass value arealso included in $Cow. Hereford ■ Baldy Maternal Index (BMI$) ◆ commercial cow-calf H-A rotational crossbreeding program ■ Certified Hereford Beef Index (CHB$) ◆ terminal sireindex ◆ used on British-cross cows ◆ offspring aresold as fed cattle on a CHB pricing grid. Simmental ■ All-Purpose Index (API) = index that evaluates sires (bredto Angus heifer & cowbase) with the portion of their daughters required to maintain herd size retained and the remaining heifers and steers put on feed and sold on grade and yield. ■ Terminal Index (TI) = index that evaluates sires for use on mature Angus cows, with all offspring put on feed and sold on grade and yield.
Here for to compare genetic evaluations (EPDs) of each bull.
Your preview ends here
Eager to read complete document? Join bartleby learn and gain access to the full version
  • Access to all documents
  • Unlimited textbook solutions
  • 24/7 expert homework help

Related Documents

Coke vs Pepsi.docx
2023W2 Assignment 4 - for release.pdf
Assignment 2 Destination Lifecycle Report.docx
Notes.docx
INTRODUCTION SMALL BUSINESS.pptx
222 tesla.pdf
20 HW Cow Lease Client Case S23 d2-1.doc
Busi 1301 Discussion 1.docx
correctedassignment9(1).docx
Test 1 December 2018, questions and answers.pdf
Module 8-1 Project Three.docx
Module 7-2 Project Two.docx
Recommended textbooks for you
Text book image
Foundations of Business (MindTap Course List)
Marketing
ISBN:9781337386920
Author:William M. Pride, Robert J. Hughes, Jack R. Kapoor
Publisher:Cengage Learning
Text book image
Foundations of Business - Standalone book (MindTa...
Marketing
ISBN:9781285193946
Author:William M. Pride, Robert J. Hughes, Jack R. Kapoor
Publisher:Cengage Learning
SEE MORE TEXTBOOKS
Recommended textbooks for you
Text book image
Foundations of Business (MindTap Course List)
Marketing
ISBN:9781337386920
Author:William M. Pride, Robert J. Hughes, Jack R. Kapoor
Publisher:Cengage Learning
Text book image
Foundations of Business - Standalone book (MindTa...
Marketing
ISBN:9781285193946
Author:William M. Pride, Robert J. Hughes, Jack R. Kapoor
Publisher:Cengage Learning
SEE MORE TEXTBOOKS