Choline chloride 60% inclusion rate — grams per tonne by species.
Choline chloride 60% is typically used at 800–1,600 g per tonne in broiler starter, 500–1,000 g/t in broiler finisher, 400–900 g/t in layer diets, 500–1,200 g/t in nursery pig feed and 300–800 g/t in grower-finisher pig feed; aqua diets run higher, commonly 1,000–3,000 g/t. Product choline content is 60%, so 1,000 g of product delivers 600 g of choline chloride and about 522 g of choline. Because choline and methionine are both methyl donors, the two are formulated together — cutting choline below requirement raises methionine demand, and that trade should be evaluated on delivered cost per unit of methyl group, not on the choline line alone.
- 800–1,600 g/t broiler starter
- 400–900 g/t layer, 300–1,200 g/t swine
- Corn-cob vs silica carrier trade-offs
- Methyl-donor interaction with methionine
Visual scope of inclusion rate reference
Short answer
Choline chloride 60% is typically used at 800–1,600 g per tonne in broiler starter, 500–1,000 g/t in broiler finisher, 400–900 g/t in layer diets, 500–1,200 g/t in nursery pig feed and 300–800 g/t in grower-finisher pig feed; aqua diets run higher, commonly 1,000–3,000 g/t. Product choline content is 60%, so 1,000 g of product delivers 600 g of choline chloride and about 522 g of choline. Because choline and methionine are both methyl donors, the two are formulated together — cutting choline below requirement raises methionine demand, and that trade should be evaluated on delivered cost per unit of methyl group, not on the choline line alone.
Two carriers, two very different products
Feed-grade choline chloride 60% is a liquid absorbed onto a carrier, and the carrier decides how it behaves in your mill. Corn-cob grades are the traditional choice: cheaper, but hygroscopic, prone to caking in humid storage, and they contribute a small amount of energy and moisture. Silica-based grades flow better, cake less and are the safer option for premix operations and for tropical warehouses, at a price premium. Both are strongly hygroscopic relative to most other additives, which is why choline is usually kept out of a vitamin premix and dosed separately — held together, choline chloride degrades vitamins, particularly vitamin K and thiamine. If a supplier quotes '60% choline chloride' without naming the carrier, the quote is not comparable.
Choline and methionine share the same job
Choline, methionine and betaine all supply labile methyl groups, and to a limited extent they substitute for one another. That interaction is why the choline decision cannot be made in isolation from the amino acid line: reducing dietary choline increases the methyl demand met by methionine, and adding betaine can spare both. The practical procurement question is which methyl source is cheapest per unit delivered on the day, subject to the physiological limits — choline also has non-methyl roles in phospholipid and acetylcholine synthesis that betaine cannot cover, so the substitution is partial, not free. Ask your nutritionist for the substitution matrix they use before treating these as interchangeable line items.
Ruminants need protection, not more product
Unprotected choline chloride is extensively degraded in the rumen, so feeding a higher dose of the standard 60% product to dairy cows mostly feeds the rumen microbes. Transition-cow programmes use rumen-protected choline, which is dosed on grams of metabolisable choline delivered per cow per day rather than on grams of product per tonne of feed. When comparing rumen-protected offers, insist on the metabolisable choline figure and the encapsulation method — product percentage alone tells you almost nothing about what reaches the small intestine.
Choline chloride 60% inclusion by species and phase
| Phase | Inclusion rate | Nutrient target | Note |
|---|---|---|---|
| Broiler starter | 800–1,600 g/t | ≈ 1,300–1,750 mg choline per kg of diet, total from all sources | Requirement is highest in the first two weeks and falls steadily with age. |
| Broiler grower / finisher | 500–1,000 g/t | ≈ 850–1,200 mg/kg total choline | Maize and soybean meal already contribute meaningful choline — count them before setting the supplement. |
| Layer, in production | 400–900 g/t | ≈ 1,000–1,300 mg/kg total choline | Supports liver lipid metabolism in high-production hens; low-choline diets are associated with fatty liver. |
| Turkey, starter | 1,200–2,200 g/t | ≈ 1,600–1,900 mg/kg total choline | Turkeys carry a markedly higher requirement than broilers in early phases. |
| Nursery pig | 500–1,200 g/t | ≈ 400–600 mg/kg total choline | Cereal-soya nursery diets are usually close to requirement before supplementation. |
| Grower–finisher pig | 300–800 g/t | ≈ 300–400 mg/kg total choline | Often the first additive removed in a least-cost run; check the methionine consequence before cutting. |
| Sow, gestation and lactation | 800–1,500 g/t | ≈ 1,000–1,300 mg/kg total choline | Reproductive diets carry the highest swine requirement. |
| Shrimp and fish | 1,000–3,000 g/t | ≈ 600–3,000 mg/kg depending on species | Aqua requirements vary widely by species and lipid level — formulate to the species specification, not a general figure. |
Product, regulatory and handling limits
| Item | Detail |
|---|---|
| Product basis | 60% choline chloride on carrier; 1,000 g of product = 600 g choline chloride ≈ 522 g choline |
| Carrier | Corn-cob (cheaper, hygroscopic, cakes) or silica (free-flowing, premix-friendly, dearer) — always name it in the RFQ |
| Premix compatibility | Keep out of vitamin premixes; choline chloride degrades vitamin K and thiamine on storage |
| Storage | Strongly hygroscopic — sealed bags, dry warehouse, first-in-first-out; typical shelf life 12–24 months by grade |
Cost of a 250 g/t change in choline chloride 60%
| Basis | Value |
|---|---|
| Product change | 250 g per tonne of feed |
| At USD 700/t delivered | USD 0.18 per tonne of feed |
| At USD 1,100/t delivered | USD 0.28 per tonne of feed |
| At USD 1,500/t delivered | USD 0.38 per tonne of feed |
| Annual effect, 20,000 t/yr mill | USD 3,500–7,500 per 250 g/t change |
Reproduce this with your own price. 250 g of 60% product per tonne delivers 150 g of choline chloride per tonne of feed.
Other inclusion-rate references
Sources
- National Research Council, Nutrient Requirements of Poultry, 9th revised edition, and Nutrient Requirements of Swine, 11th revised edition — choline requirement data.
- Aviagen and Cobb-Vantress broiler nutrition supplements — commercial vitamin and choline supplementation practice.
- EU Register of Feed Additives under Regulation (EC) No 1831/2003 — choline chloride authorisation as a nutritional additive.
- EFSA FEEDAP Panel opinions on choline chloride — safety and efficacy assessment for target species.
Figures are commercial practice bands for planning and procurement comparison, not veterinary advice or a substitute for your own nutritionist's least-cost formulation. Requirements move with genetics, climate, raw-material matrix and destination regulation — confirm every rate against the breed specification and the legal limits of the market you feed in.