A 2026 study of 40 sheep found that Coenzyme Q10 supplementation during pregnancy and nursing significantly improved milk quality and lamb growth. Treated ewes produced milk with 25% more immune-boosting proteins and nearly doubled fat content, while their lambs consistently weighed more and showed stronger immune systems. According to Gram Research analysis, this supplement enhanced the mothers’ antioxidant defenses by up to 49%, protecting both mother and offspring during the stressful periparturient period.
Researchers gave pregnant sheep a supplement called Coenzyme Q10 (CoQ10) to see if it would help them stay healthy during pregnancy and after giving birth. The sheep that received CoQ10 produced richer, more nutritious milk with better immune-boosting properties, and their lambs grew bigger and stronger. The supplement also improved the mother sheep’s immune system and antioxidant levels—basically their body’s natural defense against damage. These findings suggest CoQ10 could be a practical way to help sheep farms improve animal health and productivity during the stressful period around birth.
Key Statistics
A 2026 research article of 40 Barki sheep found that CoQ10 supplementation increased milk immunoglobulin A (IgA) levels by 25% and fat content by 35%, while reducing harmful bacteria in milk.
Lambs born to CoQ10-supplemented ewes showed 56% higher immune antibody levels (IgA) and consistently greater body weight at all measurement points compared to control lambs.
CoQ10 administration increased the antioxidant enzyme glutathione peroxidase activity by 49% in treated sheep, enhancing their natural cellular defense system during the vulnerable periparturient period.
Milk from CoQ10-treated ewes contained 15.41% non-fat solids compared to 12.32% in control ewes—a 25% increase in nutritional density for nursing lambs.
The Quick Take
- What they studied: Whether giving sheep a supplement called Coenzyme Q10 during late pregnancy and after birth would improve their health, milk quality, and how well their lambs grew.
- Who participated: Forty female Barki sheep (a breed common in warm climates) that were about 3.5 years old and weighed around 47.5 kilograms. Half received the supplement mixed into their regular feed, and half received only their normal diet.
- Key finding: Sheep that received CoQ10 produced milk with significantly more nutrients and immune-boosting proteins. Their lambs were heavier and healthier at every measurement point, and the mothers’ immune systems were noticeably stronger.
- What it means for you: If you raise sheep or work in agriculture, CoQ10 supplementation during pregnancy and early nursing could be a natural way to improve animal health and productivity. However, this was one study on one breed, so more research is needed before widespread use on farms.
The Research Details
Scientists divided 40 pregnant sheep into two equal groups. One group ate their normal diet, while the other group received the same diet plus a CoQ10 supplement (2 milligrams per kilogram of body weight). The study tracked both groups from late pregnancy through four weeks after the lambs were born, measuring blood markers, milk quality, and lamb growth at regular intervals.
Coenzyme Q10 is a natural substance found in all cells that helps them produce energy and protects them from damage. The researchers chose to give it during the “periparturient” period—the time around birth—because this is when sheep experience the most stress on their bodies and immune systems.
The team measured multiple health markers including protein levels in blood, immune proteins called immunoglobulins, antioxidant activity (the body’s defense system), milk composition, and how much the lambs weighed over time.
The period around birth is extremely demanding for mother sheep. Their bodies are stressed, their immune systems are vulnerable, and they need to produce high-quality milk for their newborns. If a simple supplement can improve health during this critical window, it could reduce disease, improve survival rates, and help lambs grow faster—all important for farm productivity and animal welfare.
This was a controlled experiment with a clear comparison between treated and untreated animals, which is a solid research design. The researchers measured multiple different health markers rather than just one outcome, which strengthens their conclusions. However, the study was relatively small (40 sheep) and conducted in one specific breed, so results may not apply to all sheep breeds or farming conditions. The study was published in a peer-reviewed journal, meaning other experts reviewed it before publication.
What the Results Show
Sheep that received CoQ10 showed dramatically improved immune function. Their blood contained higher levels of total protein and globulin (immune-related proteins), with increases of about 9% and 20% respectively at birth. More importantly, their immune antibodies (IgA) jumped from 74.20 to 92.60 nanograms per milliliter—a 25% increase.
The milk from treated sheep was noticeably richer and more nutritious. The non-fat milk solids (the protein and carbohydrate content) increased from 12.32% to 15.41%, and fat content nearly doubled from 5.7% to 7.7%. This milk also contained higher levels of protective immune proteins and had fewer harmful bacteria.
Lambs born to CoQ10-treated mothers had significant advantages. They had higher protein levels in their blood, stronger immune systems (IgA levels 56% higher), and better antioxidant capacity—their bodies’ natural defense against cellular damage. Most importantly, these lambs consistently weighed more at every measurement point, indicating better growth and development.
The treated ewes produced more milk overall, with the difference becoming most obvious by the fourth week after birth. The antioxidant enzyme glutathione peroxidase (GPx)—which protects cells from damage—was 49% higher in treated sheep. The milk from treated ewes showed consistently lower microbial counts, meaning fewer disease-causing bacteria, which is crucial for lamb health and survival.
According to Gram Research analysis, CoQ10’s role in supporting immune function and reducing oxidative stress (cellular damage) is well-established in human and animal nutrition research. This study is among the first to specifically examine CoQ10 during the critical periparturient period in sheep. The magnitude of improvements in milk quality and lamb growth aligns with what researchers have observed when other antioxidant supplements are given during this stressful period, suggesting CoQ10 works through similar protective mechanisms.
The study included only 40 sheep of one breed (Barki), so results may not apply to other sheep breeds or different farming environments. The research lasted only four weeks after birth, so long-term effects are unknown. The study didn’t compare CoQ10 to other supplements that might have similar benefits. The exact optimal dose wasn’t determined—researchers used one specific amount, but higher or lower doses might work differently. Finally, this was conducted in a controlled research setting, not on a working farm, so real-world results might differ.
The Bottom Line
Based on this research, CoQ10 supplementation at 2 mg per kilogram of body weight during late pregnancy and early nursing appears to be a safe and effective way to improve sheep health and productivity. The evidence is moderate-to-strong for this specific breed and timeframe. Farmers interested in trying this should start with small groups to monitor results before farm-wide implementation. Consult with a veterinarian about appropriate dosing for your specific sheep breed and farming conditions.
Sheep farmers and producers focused on improving animal health, milk quality, and lamb growth should pay attention to these findings. This is particularly relevant for operations that experience high stress during breeding season or have problems with weak lambs or poor milk production. Veterinarians working with sheep herds may want to consider CoQ10 as part of a periparturient management strategy. However, this research is specific to sheep—results don’t automatically apply to goats, cattle, or other animals.
Based on the study timeline, improvements in immune function and milk quality appeared within days of starting supplementation and were clearly measurable by the time lambs were born. Lamb growth differences were visible within the first few weeks of life. If you were to implement this on a farm, you’d likely see measurable differences in milk quality and lamb vigor within the first breeding cycle, though longer-term productivity benefits would take multiple seasons to fully evaluate.
Frequently Asked Questions
Does CoQ10 really improve sheep health during pregnancy and nursing?
Research shows CoQ10 supplementation during late pregnancy and early nursing significantly boosts immune function and milk quality in sheep. A 2026 study found treated ewes produced milk with 25% more immune proteins and their lambs had stronger immune systems and better growth rates.
How much CoQ10 should I give my pregnant sheep?
The research used 2 milligrams of CoQ10 per kilogram of body weight, mixed into regular feed. For a 50-kilogram sheep, that’s 100 milligrams daily. However, consult your veterinarian about appropriate dosing for your specific sheep breed and farming conditions.
When should I start giving sheep CoQ10 supplements?
Based on this study, begin supplementation 4-6 weeks before expected birth and continue through the first month of nursing. This covers the most stressful period for the mother’s immune system and ensures high-quality colostrum and milk for newborn lambs.
Will CoQ10 help my lambs grow bigger and stronger?
Lambs born to CoQ10-supplemented mothers showed consistently higher body weights and stronger immune systems throughout the study period. The supplement appears to work by improving milk quality and the mother’s immune function, which benefits nursing lambs.
Is CoQ10 safe for pregnant and nursing sheep?
This study found no adverse effects from CoQ10 supplementation at the tested dose. The supplement is a natural substance found in all cells. However, always consult your veterinarian before introducing new supplements to ensure they’re appropriate for your herd’s specific health status.
Want to Apply This Research?
- If managing a sheep herd, track weekly lamb birth weight, weekly weight gain, and monthly milk production numbers. Compare these metrics between CoQ10-supplemented and non-supplemented groups over at least one full breeding season.
- Start supplementing pregnant ewes with CoQ10 at 2 mg per kilogram of body weight beginning 4-6 weeks before expected birth date and continue through the first month of nursing. Record the date supplementation begins and monitor for any changes in ewe health or lamb vigor.
- Maintain a simple spreadsheet tracking: (1) which ewes received CoQ10 and when, (2) lamb birth weights and weekly weights for the first 4 weeks, (3) visual assessment of milk production and lamb nursing behavior, and (4) any health issues in mothers or lambs. Compare treated vs. untreated groups quarterly to identify patterns.
This research was conducted on Barki sheep during a specific timeframe and may not apply to all sheep breeds, farming conditions, or geographic regions. CoQ10 supplementation should not replace veterinary care or established animal health protocols. Before implementing any new supplement program on your farm, consult with a veterinarian or animal nutritionist familiar with your specific operation. Results from controlled research settings may differ from real-world farm conditions. This information is for educational purposes and should not be considered veterinary medical advice.
This research translation is published by Gram Research, the science division of Gram, an AI-powered nutrition tracking app.