Make Ewe and Doe Culling Decisions Count| Purina Animal Nutrition (2024)

The culling of sheep and goats occurs when they are no longer contributing to the profitability of your operation. But cull ewes and does don’t have to be a loss. Efficiently adding weight to cull sheep or goats and identifying the ideal marketing window can help you capture more revenue for your business.

Learn more about the top factors for culling goats and sheep, how to know when to market them and how to feed cull ewes and does to maximize gain.

When to make sheep and goat culling decisions

There are two key times of year to evaluate culling sheep and goats, especially females, from your herd or flock – after weaning and before breeding. After weaning, assess potential cull ewes and does for productivity and profitability in terms of the number of lambs or kids weaned and the cumulative weaning weight.

Around 45-60 days before breeding season, evaluate how potential cull ewes or does held up during the grazing season. Did any require greater maintenance in terms of parasites, worms or other health challenges? Did they have feet and leg issues? Body condition can be a factor for culling, but under-conditioned ewes and does that are otherwise sound and productive still have time to get back into condition with nutritional support before breeding.

For spring lambing or kidding, late gestation is a good time to review animal records and earmark females that have decreased in productivity over the past few years so you can keep an eye on them.

Voluntary and involuntary culling factors

Many factors influence decisions around culling goats and sheep, and you can group these factors into two categories – voluntary and involuntary culling. Involuntary culling of sheep and goats is associated with factors that negatively impact the bottom line regardless of market conditions. Involuntary culling factors are typically associated with reproductive issues (not breeding back) and severe health challenges. Most other factors are considered voluntary culling – factors preventing females from being highly productive but may be overlooked if the profit margins are high in a given market. As such, voluntary culling factors include:

  • Feet and legs
  • Assisted or unassisted lambing/kidding
  • Mothering ability
  • Udder quality
  • Number of lambs or kids weaned
  • Cumulative weaning weight of lambs or kids
  • Body condition
  • Age
  • Teeth


Producers often ask me at what age to cull ewes or does. The answer depends on the animal. Is she weaning a cumulative lamb or kid weight that ranks in the top half of the flock or herd? Has she remained hardy in terms of feet and legs and udder quality? Age alone isn’t a reason to cull if an animal is productive and weaning an adequate weight of lambs or kids. However, if an older ewe or doe is routinely under-conditioned and has reduced fertility or milk production, it may be time to move her down the road.

Evaluating market opportunity

Once you’ve decided which animals to cull, consider if you should cull immediately or keep them in the flock for a time to maximize market opportunities. The decision is twofold:

  1. What are the expected feed costs to add weight to cull animals before marketing?
  2. Will the expected return on investment outweigh any additional input costs?


Deciding when to cull ewes or does is about comparing the opportunity cost of time on feed and market opportunity. You don’t have a crystal ball to know what market prices will be, but you can look at seasonality of historical cull ewe prices to make an informed decision.

Also consider the environmental conditions and time of year. For example, it might not make sense to devote extra feed resources to cull ewes and does when experiencing drought conditions. The availability of stored forage and grazing resources can greatly influence expected feed costs for cull ewes and does.

Feeding cull ewes and does

If you decide to feed out females before marketing, I recommend treating them like incoming feedlot animals and, at a minimum, getting them up to date on vaccinations and deworming. Then, work them up to a feedlot-style diet for 60-90 days before marketing to maximize weight gain. However, be sure to evaluate for broken-mouthed ewes or does prior to initiation of the feeding program as the diet may need to be constructed to ensure they can be truly efficient on grain-focused ration.

Roughage is still essential in the diet, but, to maximize efficiency, it’s important to feed a higher level of energy to cull ewes and does than replacement females or females remaining in the breeding program. Determining how much to feed cull ewes and does will depend on current grain prices and what forage resources you have available. Self-fed products with a high fat level can also be a great option to supplement forages and help quickly add weight to cull ewes and does.

Re-asses cull ewes and does about 30 days after they’ve been on feed. If they haven’t gained weight, consider marketing them to focus resources on females that are responding to added time on feed.
Finding just the right balance of feed investment and marketing opportunity can help you capitalize on cull ewes and does and bring additional revenue back to your business. Find a dealer here.

Make Ewe and Doe Culling Decisions Count| Purina Animal Nutrition (2024)

FAQs

What is the criteria for culling sheep? ›

Lame ewes should be separated from the main flock and treated, if treatment fails they need to be culled. If your records indicate a ewe had prolapse in the past she should not be kept. The udder should be examined for pendulous udder, lumps or lesions and ewes that have had blind teat or mastitis should be culled.

What are the defects for which sheep should be culled? ›

The main reasons for culling ewes are tooth condition (mouth), mastitis, poor body condition and feet problems. Also, ewes leave the flock because of mortality. The proportion of ewes that are likely to be culled for these reasons is influenced by ewe age.

What is the rate for a ewe cull? ›

Culling poor performing ewes

Studies have shown that on average, flocks replace 20–25% of their ewes every year, depending on their culling policy and ewe mortality. Underperforming ewes consume feed, take up space, and require additional labour, while generating less profit than their counterparts.

What is the culling rate for sheep? ›

In Flock I fertility is poor (60 per cent, lambs marked) and only 17 per cent, of the maiden ewes can be culled. In Flock II fertility is quite good and 37 per cent, of the maidens can be culled.

What are the factors for culling? ›

The most common risks for culling are: Mastitis, fertility, and lameness. Cow level risk factors for these diseases are parity, lactation stage, calving season, and milk yield.

Why is culling important? ›

In a nutshell, culling is all about removing unfit birds from your flock. They are many reasons why you should cull your flock such as saving on water and feed costs, preventing the spread of diseases in your birds, creating more room for healthy birds, and bringing uniformity to your flock.

Why would a farmer cull a ewe that has lambing problems? ›

Production history:

Simply stated, unproductive ewes should be culled. Other reasons include ewes that lambed but due to a difficult birth, the lambs are either born dead or lambs survive and are unthrifty and small.

What to do with cull ewes? ›

If you decide you need to cull ewes after lambing, there are two options — sell now or sell later, when the market prices may be better. You will need to factor in the cost of keeping the ewes, including feeding costs, health care costs and any death losses.

What are 2 of the biggest problems facing sheep and goat producers today? ›

Two major reasons for the decline of sheep production in the US are the decline for demand of wool and lamb meat. The increased use of synthetic fibers in clothing, manufacturing and fabric materials pulled consumers away from wool products. When wool fazed out, lamb meat as a paired product declined with it.

What is the most expensive cut on a sheep? ›

Rib chop: Rack of lamb, sold whole or cut into rib chops, is the most prized and most expensive lamb cut. The meat on the rack is exceptionally tender and fine flavoured. Rib chops, either single (one bone) or double (two bones), are excellent grilled, broiled, and sautéed.

What kinds of ewes should be culled from the breeding flock? ›

Culling unproductive ewes every year reduces carrying costs for the flock. Regardless of market conditions, unproductive ewes should be removed from the flock to save valuable feed for higher producing ewes.

What is the average profit per ewe? ›

At $75 per cwt, and assuming wool brings $10.10 per ewe, gross annual income per ewe can average $106.98-if 129 lambs can be marketed from 100 ewes. Variable costs, including feed and labor, range from $74.45 to $77.03 per ewe. Fixed costs, including interest, average $12.77 per ewe.

How do you calculate culling rate? ›

The calculation of herd turnover or culling rate by this method has been. g . , year ) / mean cow inventory for same time period + number culled during period .

How is cull rate calculated? ›

To determine cull rate, divide the total number of sold/died by the number of cows in the herd.

Why are ewes culled? ›

The main reasons for culling ewes are feet, teeth condition, age, diseases, body condition score, udder and reproduction problems.

What are the slaughter grades for sheep? ›

In the EUROP scale each carcass is given a grade from “E” (excellent) to “P” (poor). Carcass Fat score – Each carcass is also graded by the abattoir for fat cover on a scale from 1 to 5, with a target fat score of 3, 1 being a very lean carcass and 5 being an excessively fat carcass.

When can you slaughter a sheep? ›

Sheep and goats may be killed anytime after six weeks, but the more desirable age is from six to 12 months. All meat animal carcasses are composed of muscle, fat, bone and connective tissue. The chief edible and nutritive portion is the muscle or lean meat.

What age do you cull a lamb? ›

Most lambs/sheep are slaughtered at 10 weeks to 6 months, though some may be 14 months old.

What are the 3 categories for sheep? ›

Sheep breeds generally fall into three general categories: wool, meat and dairy. Many breeds are dual-purpose, while some breeds can fall into all categories. For wool consider Merino, Lincoln, Rambouillet or Romney.

References

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