LT-Blen

This page contains information on LT-Blen for veterinary use.
The information provided typically includes the following:
  • LT-Blen Indications
  • Warnings and cautions for LT-Blen
  • Direction and dosage information for LT-Blen

LT-Blen

This treatment applies to the following species:
Manufacturer: Merial Select

Fowl Laryngotracheitis Vaccine, Modified Live Virus

U.S. Vet. Lic. No.: 243

Contents: This vaccine contains a modified live fowl laryngotracheitis virus for the initial vaccination or revaccination of healthy chickens four weeks of age or older by eyedrop or by drinking water as an aid in the prevention of fowl laryngotracheitis.

Notice: Merial Select's vaccines have met the requirements of the USDA in regard to safety, purity, potency, and the capability to protect susceptible chickens. This vaccine has been tested by the Master Seed immunogenicity test for efficacy.

Contains Gentamicin as a bacteriostatic agent.

LT-Blen Indications

This vaccine is recommended for the protection of healthy chickens. It is essential that the chickens be maintained under good environmental conditions and that exposure to disease viruses be reduced as much as possible.

Dosage and Administration

Intraocular Vaccination: The vaccine used for intraocular vaccination is accompanied by diluent and is recommended for the vaccination of healthy chickens four weeks of age or older using only the 1,000 dose vial.

1. Reconstitute each 1,000 doses of vaccine with 30 mL of diluent.

a. Remove aluminum seal and rubber stopper from vaccine vial and diluent vial. Avoid contamination of stoppers and contents.

b. Add diluent to half-fill the vaccine vial. Replace stopper in vial and shake it so that all contents are dissolved.

c. Pour the reconstituted vaccine into the diluent container. Replace stopper in diluent container and shake.

d. Remove stopper and fit drop-dispenser tip into diluent container.

2. Holding the diluent container with the dropper tip down, gently press the sides, dropping one drop of vaccine on the bird's eye. Be sure the vaccine spreads over the eye before releasing the bird.

Drinking Water Vaccination Using Pouring Application: Drinking water vaccination is recommended for healthy chickens at least four weeks of age.

1. Remove all medications, sanitizers and disinfectants from the drinking water 72 hours (three days) prior to vaccination.

2. Provide sufficient waterers so that all the chickens can drink at one time. Shut off water supply and allow chickens to consume all the water in the lines.

3. Raise water lines above the chickens' heads. Clean and rinse the waterers thoroughly.

4. Withhold all water from the chickens for a minimum of two hours in warm weather to four hours in cool weather prior to vaccination to stimulate thirst. Withdrawal time should be reduced if half-house brooding is in process.

5. Do not open or mix vaccine until ready to vaccinate.

6. Drinking water for vaccine delivery should contain one ounce (29 gram) of non-fat dry milk per gallon (3.8 liters) of non-chlorinated water, or should contain milk product based stabilizer prepared according to the manufacturer's instructions.

7. Reconstitute the vaccine in 3 gallons (11 liters) of milk-water during cool weather or 4 gallons (15 liters) of milk-water during warm weather for each 1,000 doses.

8. Distribute vaccine solution among waterers. Avoid direct sunlight.

9. Lower waterers and allow the chickens to drink freely. Add the remaining vaccine solution to the water lines as the chickens drink.

10. Do not provide additional drinking water until all the vaccine is consumed.

Drinking Water Vaccination Using Proportioner Application: Drinking water vaccination is recommended for healthy chickens at least four weeks of age. Several types of medicator/proportioners are commercially available. Set proportioner to deliver one ounce (30 mL) of vaccine concentrate per one gallon (3.8 liters) of water.

1. Remove all medications, sanitizers and disinfectants from the drinking water 72 hours (three days) prior to vaccination.

2. Clean all containers, hoses and waterers prior to vaccination.

3. Withhold all water from the chickens for a minimum of two hours in warm weather to four hours in cool weather prior to vaccination to stimulate thirst. Withdrawal time should be reduced if half-house brooding is in process.

4. Do not open or mix vaccine until ready to vaccinate.

5. Calculate to supply vaccine solution at a rate of 3 gallons (11 liters) per 1,000 chickens in cool weather and 4 gallons (15 liters) per 1,000 chickens in warm weather. The age of the chickens should be considered when calculating water supply. Always use non-chlorinated water when vaccinating chickens.

Example

1,000 chickens in cool weather x 3 gallons (11 liters) = 3 gallons (11 liters).

1,000 chickens in warm weather x 4 gallons (15 liters) = 4 gallons (15 liters).

6. Prepare vaccine stock solution as follows:

a. Determine the quantity of vaccine concentrate required by multiplying one ounce (30 mL) x gallons of water needed for vaccine/drinking water.

Example

For 1,000 chickens: 3 gallons x 1 ounce (30 mL) = 3 ounces (90 mL).

b. Add 3 ounces (85 gm) of non-fat dry milk per 16 ounces (480 mL) of cool water, or use a commercial milk product based stabilizer according to the manufacturer's instructions. For 1,000 chickens add 0.5 ounces (16 gm) non-fat dry milk to the 3 ounces (90 mL) of water.

c. Reconstitute the dried vaccine with the milk solution. Rinse the vaccine vial to remove all the vaccine.

7. Insert proportioner hose into the vaccine stock solution and start water flow. Continue until all solution has been consumed before changing water supply to direct flow.

8. Do not medicate or use disinfectants for 24 hours after vaccination.

Precaution(s): Store vaccine at 35-45°F (2-7°C). Do not freeze. Use entire vial contents within four hours of opening. Burn this container and all unused contents.

This vaccine is non-returnable.

Caution(s): The capability of this vaccine to produce satisfactory results depends upon many factors, including - but not limited to - conditions of storage and handling by the user, administration of the vaccine, health and responsiveness of individual chickens, and degree of field exposure. Therefore, directions for use should be followed carefully. The use of this vaccine is subject to applicable state and federal laws and regulations.

When the vaccine is administered by eyedrop, a mild conjunctivitis often associated with slight lacrimation appearing at about the fourth or fifth day post-vaccination and disappearing about the seventh or eighth day post-vaccination is frequently seen in some birds. The conjunctivitis may be accentuated in dry and dusty houses because of the additional irritation of dust particles.

Vaccinate all chickens on the premises at one time.

For eyedrop vaccination, mix the vaccine and diluent one vial at a time, and use within four hours of opening.

Do not attempt to save any unused portion of vaccine and do not stretch the dosage.

Do not spill or splatter the vaccine and avoid contaminating your hands, eyes and clothing with the vaccine.

The vaccine is prepared for the vaccination of healthy birds. Improper handling or administration may result in variable responses.

Avoid stress conditions during and following vaccination.

Do not vaccinate diseased chickens.

Do not place chickens in contaminated facilities.

Exposure to disease must be minimized as much as possible.

Warning(s): Do not vaccinate within 21 days of slaughter.

For veterinary use only.

PA-1M/PB-2M/PC-5M 1199

Presentation: 30 mL (25 x 1,000 dose) and 150 mL (25 x 5,000 dose and 25 x 10,000 dose) vials. A bottle of liquid (dilution) is provided with each package of the vaccine (except 5,000 dose vial) for mixing with the dried virus material.

NAC No.: 11050223

MERIAL SELECT, INC.
P.O. DRAWER 2497, GAINESVILLE, GA, 30503
Telephone:   770-536-8787
Order Desk:   770-536-8787
Fax:   770-534-1126
Website:   www.merial.com
Every effort has been made to ensure the accuracy of the LT-Blen information published above. However, it remains the responsibility of the readers to familiarize themselves with the product information contained on the US product label or package insert.

Copyright © 2014 North American Compendiums. Updated: 2014-04-11

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