Calcium Power Bar

Ingredients:

Calcium Chloride/Calcium Sulfate/Palm Fat Powder/Vitamin A/Vitamin D₃

Background

During lactation, dairy cows’ ability to regulate calcium decreases. A significant amount of Calcium enters colostrum before and after calving, which is then excreted through milk.

Excessive calcium mobilization in cows can lead to calcium deficiency, with high-producing cows being more susceptible.

Calcium deficiency in dairy cows may trigger postpartum paralysis and subclinical hypocalcemia, causing substantial economic lossesforfarms.

 After calving, dairy cows experience a significant decrease in blood calcium levels, with the critical period occurring between 6 to 12 hours postpartum. Mild cases may involve retained placenta, while severe instances could develop into puerperal fever. Immediate calcium supplementation becomes crucial during this phase, as blood calcium levels typically drop to their lowest point between 24 to 48 hours postpartum.

Clinical data indicates that some cows still show continued reduction in blood calcium concentration up to four days after delivery, underscoring the importance of monitoring calcium levels in dairy cows.

This Calcium bar is a special oral Calcium supplement designed for the perinatal period. After entering

 the body, each Calcium bar can release Calcium quickly and persistently, and release vitamin A and Vitamin D to promote the absorption of Calcium and phosphorus by cows, which is anessential supplement for Calcium after birth of cows.

Product features

Release quickly and give accurate amount.

It can effectively improve the body function and prevent some secondary symptoms after delivery.

It does not cause damage to the esophagus.

The surface of the calcium rod is specially treated, and when it meets digestive fluid and water, it immediately produce slubricating mucus, which does not irritate the esophagus and entersthe rumen very smoothly. It will not cause damage to the rumen.

Calcium bar are selected with easy disintegration natural components, which can be completely released (dissolved) in the rumen, without causing blockage of the rumen valves and no impact on the health of the rumen.

Component action analysis

As an ionic inorganic salt, calcium chloride can be completely ionized and decomposed into chloride ions and calcium ions within 30 minutes in rumen, which can rapidly improve the blood calcium level of cows and is the fastest exogenous calcium source released in rumen.

Calcium sulfate is slowly and persistently released under the action of rumen microorganisms, and plays a lasting role in calcium supplementation.

 Key Advantages of Calcium Power Bar for Adult Dairy Cattle

Compared to other calcium supplementation methods (e.g., intravenous calcium injections, oral liquid calcium, or dietary calcium mixes), calcium power bar offer unique benefits tailored to dairy cow management:

Targeted Prevention of Hypocalcemia and Milk Fever

Milk fever (a severe form of hypocalcemia) is a leading metabolic disorder in adult dairy cows, especially high-producing or multiparous (multiple calvings) cows.

Calcium Power bar deliver calcium directly to the gastrointestinal tract, where it is absorbed gradually—addressing the “calcium gap” (imbalance between calcium demand and supply) during the periparturient period. Unlike intravenous injections (which only treat acute cases), Calcium Power bar prevent hypocalcemia before symptoms appear, reducing the need for emergency interventions.

Convenient and Labor-Efficient Administration

Intravenous calcium requires trained veterinarians to avoid vascular injury, while liquid calcium often needs repeated dosing (2–3 times daily). Calcium Power bar are designed for easy oral administration:

They can be given by farm staff (no specialized skills needed) using a Calcium Power bar applicator.

Most formulations are single-dose (or 2-dose, pre- and post-calving), reducing labor time—critical for large herds.

Slow-Release Design Maintains Stable Blood Calcium

High-quality Calcium Power bar use enteric coatings or matrix structures to release calcium over 12–24 hours. This avoids the “calcium spike” (rapid hypercalcemia) caused by fast-absorbing supplements, which can suppress the cow’s natural parathyroid hormone (PTH) activity (PTH regulates bone calcium mobilization). Stable (blood calcium) levels support consistent physiological function (e.g., muscle contraction, nerve transmission) and reduce stress on the cow’s metabolic system.

Supports Production Performance and Reproductive Health

Hypocalcemia directly impairs:

Milk yield: Low calcium reduces mammary gland function; cows with subclinical hypocalcemia (no obvious symptoms but low ) produce 5–10% less milk in the first 30 days post-calving.

Reproduction:

Hypocalcemia delays uterine involution (uterus recovery) and increases anestrus (absence of estrus). Calcium boluses mitigate these issues by maintaining normal，supporting timely breeding and higher conception rates.

Reduces Risk of Secondary Complications

Hypocalcemia weakens the cow’s immune system and muscle strength, increasing susceptibility to:

Metabolic disorders (ketosis, displaced abomasum).

Infectious diseases (mastitis, metritis).

Locomotor issues (lameness). By preventing hypocalcemia, calcium boluses indirectly lower the incidence of these costly complications.

Calcium chloride and calcium sulfate are both acidic salts, which can acidify the blood and improve the absorption and utilization rate of calcium.

Instructions and methods of use

This product is specially used for calcium supplementation in cattle. It is recommended to administer 1 dose immediately 0 hours after delivery for first-calving cows, and 1 dose at 0 hours and 12 hours after delivery for calving cows.

 Take the calcium bar out of the individual package and gently put it into the corresponding feeding gun; point the round end at the cow; insert the feeding gun into the cow’s mouth, push the calcium bar in, let the cow swallow it; after feeding, let the cow drink an appropriate amount of water.

Product testing standards

A random number of test calving cows were selected from the dairy farm.

After calving, calcium bars were administered according to the procedure.

The serum calcium ion concentration before administration, 6h after administration and 12h after administration were measured, and compared with the normal blood calcium concentration to evaluate the effect of the product.

Clinical Data Supporting Efficacy

Clinical studies and on-farm trials (conducted by veterinary research institutions and livestock nutrition companies) consistently validate the benefits of calcium boluses for adult dairy cattle. Below are key findings:

Prevention of Milk Fever (Parturient Paresis)

Evaluated 800 multiparous Holstein cows:

Control group (no Calcium bar): 22.5% incidence of clinical milk fever (symptoms: recumbency, muscle tremors, reduced consciousness).

Calcium bar (1 bar 24–48 hours pre-calving + 1 bar 12 hours post-calving): 4.8% incidence of clinical milk fever—a 78.2% reduction.

Subclinical hypocalcemia ( < 2.0 mmol/L at 24 hours post-calving) was reduced from 68% (control) to 21% (Calcium bar group).

Maintenance of Blood Calcium Levels

A trial measured in 120 dairy cows:

Control group: dropped to 1.7–1.9 mmol/L (subclinical range) within 12 hours post-calving, remaining low for 48 hours.

Calcium bar group: stayed within the normal range (2.1–2.5 mmol/L) for 72 hours post-calving, with no significant fluctuations.

Improvement in Milk Yield

A 3-year on-farm trial (2019–2021) with 1,500 high-producing dairy cows (average 10,000 L/ lactation) found:

Calcium bar group produced an average of 680 L more milk per lactation than the control group.

The greatest difference occurred in the first 60 days post-calving (peak lactation), with the Calcium bar group yielding 8–10% more milk daily.

Enhancement of Reproductive Performance

Control group: 42% of cows had delayed uterine involution (≥ 21 days post-calving), and first service conception rate was 38%.

Calcium bar group: Only 15% had delayed uterine involution, and first service conception rate increased to 53%—a 39.5% improvement.

The average interval from calving to first estrus was shortened by 3.2 days in the Calcium bar group.

Reduction in Secondary Complications

Control group: 18.2% incidence of displaced abomasum, 14.5% incidence of metritis.

Calcium bar group: 6.1% incidence of displaced abomasum, 7.3% incidence of metritis—reductions of 66.5% and 49.7%, respectively.

Storage conditions and methods

Lightproof, sealed and stored in a dry place.

Shelf life

18 months from the date of production

Package

with polyethylene plastic pipe

Attention

1)Prevent rain, moisture and pollution during transportation, avoid sun, rain, heat and impact;

2) Open and use as soon as possible to avoid deterioration;

3) It shall not be mixed with toxic or other polluting articles. Under the condition of meeting transportation and storage conditions, the original packaging product shall be 18 months from the production.