Some considerations about vaccinated animals

in #agriculture3 months ago (edited)
Dear readers, in previous articles we have talked about the biosecurity of bovine animals, within the sanitary management one of the processes that are carried out to these animals is the application of vaccines to prevent diseases such as brucellosis, anaplasmosis among others. Vaccines according to the national institute of agricultural research are biological preparations that are administered in this case to animals to generate an immune reaction in the body similar to that caused by a natural infection with the intention of immunizing the animal and that it does not acquire any infection if it has contact with any infectious agent.

In the production units, some farmers wonder why, despite vaccinating their animals, they sometimes acquire the disease; in order to answer this concern, a veterinary medicine professional (Jáuregui Veterinary Doctor) was consulted, who indicated that there is a possibility that an animal may not respond satisfactorily to the administration of a vaccine, due to some factors that may affect the immune development of the animal and therefore does not provide protection to the animal against any outbreak of the disease.

Taking into account what was mentioned in the previous section, below, some factors will be mentioned, which according to some specialists of veterinary medicine can affect the effectiveness of vaccines.

  • Stress can influence the response of the vaccine in the animal, there are factors that can cause stress in the animal such as, for example, overcrowding, farm staff who perform the handling aggressively, environmental factors among others, which cause imbalance in its body that suppresses the immune action of vaccines.

  • Inadequate nutrition can also influence that the animal does not respond positively to vaccines and therefore will not respond to the vaccine and will not have immunity to the disease and the productive performance of the animal will also be affected.

  • The doses of the product also influence an adequate protection of the animal, that is, the recommendation of the vaccine supplied must be complied with avoiding lower and higher doses, it is there that qualified personnel are needed to comply with the recommendations of the product.

  • The act of vaccination must be carried out by personnel with sufficient skill and knowledge in the handling of syringes, to place the vaccines efficiently and supply the correct dose according to the weight of the animal.

  • If the vaccine is purchased in advance, it is important that they are stored and / or preserved as indicated by the manufacturer.

  • Verify that the vaccine is not expired, because it is very likely that they do not contain the antigenic properties necessary to generate immunity in the animal.

Dear readers, as you have been able to demonstrate within the sanitary management of the animal, vaccination is a vital process, but some factors such as those mentioned above must be considered, it depends on it that we have healthy animals that maintain their vigor and productivity. It is important that the veterinarian carries out or supervises the vaccination process to verify that the product is in force, the vaccine is applied in the correct way and the appropriate dose is supplied.

On the other hand, veterinary doctors point out that animals during their first weeks of life receive a large amount of antibodies from their mother from colostrum, which is the first milk produced by the cow when breastfeeding begins, therefore, they do not recommend applying vaccines because the high amount of antibodies from colostrum can neutralize the antigenic properties of the vaccine.

The livestock sector is very complex because it is necessary to efficiently manage two subsystems that is, the agronomic management for forage crops and also the sanitary management must be known, the producer who maintains these aspects in balance will be able to have a sustainable livestock company addressing all the aspects that have been mentioned in a timely manner.

Thanks for reading the article, until a next installment.

Bibliographic references
  • Paranhos, M; Macedo, L and Schmidek (2015). Good management practices, vaccination. Funep

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