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An Sci 4384, Reproductive Management

Animal Science 4384

Reproductive Management Plan

Ranch/Farm Inventory

A. Weaned Calves From Previous Year

  1. Calves were weaned during the previous year. All steers and most of the heifers were sold. Fifty of the heifers were retained as replacement heifers (see item B).
  2. Heifers (n = 128 head)
    Calving period No. Weaning wt. (lbs.)
    1 20 535
    2 19 500
    3 18 485
    4 26 420
    5 15 375
    6 10 325
    7 20 300
    Total 128
  3. Steers (n = 130 head)
    Calving period No. Weaning wt. (lbs.)
    1 19 550
    2 19 520
    3 20 500
    4 24 485
    5 17 455
    6 13 400
    7 18 360
    Total 130

B. Replacement Heifers (n = 50 head)

  1. All replacement heifers are nonpregnant
  2. Replacement heifer inventory
    Calving period during
    which heifers were born
    Age (days) Weight (lbs.). No. of head
    1 365 650 15
    2 345 620 12
    3 325 600 7
    4 305 540 5
    5 285 500 4
    6 265 475 3
    7 245 450 4
    Total 50

C. Cows (n = 355)

  1. Pregnant cows (n = 305)
    Calving period Thina Moderateb
    1   40
    2 10 45
    3 20 35
    4 20 40
    5 20 15
    6 15 15
    7 18 12
    Total 103 202

    aThin body condition = 3
    bModerate body condition = 5

  2. The pregnant 2 year old heifers are included with the pregnant cows (see item 1 above).
  3. Nonpregnant/nonlactating cows (n = 50)

    Thin body condition (3) = 40 cows

    Moderate body condition (5) = 10 cows

D. Bulls

  1. There are currently 15 bulls available for breeding