Effects of Breeding Ewe Lambs on Reproductive Performance Longevity.

Project Overview

Project Type: Farmer/Rancher
Funds awarded in 2024: $24,562.00
Projected End Date: 05/15/2027
Host Institution Award ID: G248-24-WA507
Grant Recipient: Peckham Livestock
Region: Western
State: Utah
Principal Investigator:
Gene Peckham
Peckham Livestock


  • Animals: sheep


  • Animal Production: livestock breeding

    Proposal summary:

    Currently range sheep producers hold off breeding ewe lambs until
    they are 18 months of age.  In a previous grant we showed an
    economic benefit for breeding ewe lambs. Producers were concerned
    with the productive longevity of the ewe lambs.  We want to
    follow-up our previous grant (FW22-394) and follow the ewes for
    three more years, five years total.  We want to add an
    additional 75 ewe lambs to our data.  We will determine the
    difference in ewe live weight and lamb weights between ewe lambs
    bred and ewes bred at 18-months. Breeding ewe lambs will give
    producers another management tool for increasing productivity and

    We will follow the ewes from our previous grant, breed
    twenty-five additional ewe lambs and determine the affects of ewe
    weight on lambs weights between breeding ewe lambs and yearling
    ewe lambs.  Each ewe and lamb identified with EID tags and
    followed with the Gallagher Animal Management system. Weights of
    ewes and lambs, and number of lambs will be taken at lambing,
    when the sheep are moved from spring range to summer range and at

    We hypothesize that the breeding of ewe lambs will not affect the
    production longevity of breeding ewe lambs.  If this is the
    case, the economic value ranges from $80 to $90 per ewe. 
    The ewe lambs are more likely to have twins their second year
    where as those bred at 18 months are more likely to have

    We will produce a pamphlet to distribute to producers and have a
    questionnaire to get their feedback.  We will also present
    our findings at an animal conference and submit a manuscript of
    the findings in a academic publication.

    Project objectives from proposal:

    Objective 1:  Continue to monitor ewe lambs that were
    bred from our previous grant (FW22-394) to determine lamb
    production for five years.

    Objective 2:   Increase the number of ewe lambs
    bred, adding more ewes to the ewes from grant #FW22-394.

    Objective 3:   Determine the difference in ewe
    live weight and lamb weights between ewe lambs bred and those
    that were bred at 18 months. 

    Objective 4:   Disseminate our findings to
    producers and academia through pamphlets, scientific manuscript
    and conference talk. 

    Any opinions, findings, conclusions, or recommendations expressed in this publication are those of the author(s) and do not necessarily reflect the view of the U.S. Department of Agriculture or SARE.