Improvac has been shown to be safe in male pigs from 8 weeks of age . Pfizer Inc. Cornhusker Highway, Lincoln,. Nebraska USA. Synthetic GnRF. Unlike physical castration, which is performed early in a pig’s life, Improvac is administered only a few weeks prior to slaughter and allows pigs to grow naturally. Improvac® Pfizer Animal Health. Contraceptive Product: GnRH protein conjugate . Product Category: Immunocontraception: vaccine against the GnRH. Product.

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The RSPCA said farmers in its Freedom Foods scheme could use Improvac from later this month if they convinced managers that it would help animal welfare, for example by reducing aggression between boars.

Zoetis South Africa Pty Ltd. For the use by or under the control of a veterinarian only. The second dose should be given 4 to 5 weeks prior to slaughter. The second dose, at least 4 weeks after the first dose, is essential to limit the further production of taint substances. Peter Melchett, policy director of the Soil Association organic movement, said that its primary concern was the impact on the animals.

Zoetis – Product Improvac® | Zoetis ZA

Pfizer said it was currently “being used by a small number of pig farmers in the UK”. It works by injecting pigs twice with a synthetic product that causes the testes to shrink. Pharmaceutical giant Pfizer developed the drug, Improvacto allow farmers to grow pigs bigger before slaughter but without them releasing the hormones ipmrovac cause boar taint, a taste many consumers dislike.


The recommended site for injection is at the base of the neck, immediately behind the ear. Meat produced using the drug does not have to be labelled as such. Order by newest oldest recommendations. Consumers should pfzier better informed about such changes to their food, added Waygood. This vaccine has been fully tested lmprovac potency, sterility and safety before issue but it must be stressed that the correct vaccination procedure in the field is equally important if secondary infection is to be prevented.

The major predisposing factor to this is absorption of skatole through the skin in a wet and soiled environment. The significant reduction in the testicle size after the second injection indicates a vaccination success. But the AFS, the country’s biggest farm certification scheme, has rejected it, fearing a public backlash.

Topics The meat industry The Observer. This increased weight gain may also result in an increase in fat deposition. Improvac Boar Taint Vaccine for Male Pigs is used to control boar taint caused by the accumulation of taint substances including androstenone and skatole in entire male pigs.

All animals were negative for boar taint by both cooking and melting tests. After vaccination no boar taint was detected in carcasses. Only for use in male pigs.


Fears over use of chemicals to castrate pigs

The safety assessment of Improvac was every bit as rigorous as a human medicine assessment. Public sensitivity to chemical castration is likely to be high after the scandal in Ireland, when pork products were contaminated by PCBs — dangerous, man-made chemicals.

The second dose of vaccine must be given 4 to 5 weeks prior to slaughter to control taint substances already present in the carcase. In the event of accidental self-injection, seek medical advice immediately. Show 25 25 50 All. Regulatory constraints and medical practices vary from country to country. Keep out of reach of children, uninformed persons and animals. If this is suspected, seek veterinary advice and notify the registration holder.

Boars vaccinated against boar taint had lower ADW before the second vaccination, but compensated the weight difference after complete vaccination.

Meat from pigs that have been “chemically castrated” could soon be on sale in Britain, with no label to warn shoppers that it contains a controversial drug. Vaccination as well as surgical castration reliably prevents the incidence of boar taint.

Care should be taken to avoid accidental self-injection imprpvac needle-stick injury when administering this product.