When we have a problem in a livestock or poultry farm, the first thing we observe is a decrease on the production and after that we start observing some ill animals that lead us to suspect about the existence of a problem.

First thing we need to do is a good anamnesis and collect as much information as possible, in order to initiate a correct evaluation of the situation and achieve a precise diagnostic.

We also must carry out a good necropsy to a significant number of animals, depending on the size of the batch and the animal species.

Furthermore, it is necessary to collect some samples and send them to a laboratory. These samples will be useful to establish a diagnostic or confirm the suspected problem.

Once the problem has been detected, we must define the treatment that will be carried out as well as the necessary measures to correct this problem preventively and avoid it happens again, such as handling practices to correct problems that they may cause, or proper prophylactic measures according to the problem.

The nutritional part plays a determinant key role, as apart from being the most important factor for the productive development of animals, it permits to administrate nutrients, additives which prevent against infections by microorganisms and other hazard agents that may affect the productive results, as well as elements that improve the absorption of nutrients.

Treatments must be adequate and specific; otherwise we can have important losses of money. The decision on the treatment to carry out is usually based on economic factors, but we need to take into account that treatments should be evaluated by its efficacy, quality or effects apart from their prices.

Treatments against microorganisms must be specific, because there are usually mistakes regarding indications and doses. We remind you that if the dosage administered is under the dosage recommended, it can cause resistances which can lead to a bigger problem.

Currently, most productive exploitations have technical assistance so the evaluation of the products after the treatment is possible. The most important is that the diagnostic has been correct; otherwise we can have some doubts regarding a determinate product.

The suitability of companies which produce therapeutical products plays a very important role as these companies dispose of proper productive procedures, as well as quality control procedures which guarantee the specifications of their products.

Research plays a very important role regarding the development of new products, which overcomes barriers of microbiological resistance, or improves results, as well as discovers new products demanded by markets which offer better prices.

Some products which were abandoned due to their low efficiency a few years ago, they have turned to be used after some years because they have recovered their efficiency by overcoming the barrier of bacterial resistance.

When we determine a treatment, it is important to follow the technical recommendations of the manufacturer of the product that we are going to use. Sometimes the same Active Ingredient can be dosed differently due to its concentration.

Finally we must follow the recommendations of use of the therapeutical products regarding when administration of product must be finished before selling the animals or products of animal origin for human consume. There are determinate products that may cause health problems in human beings if the administration of therapeutical products is not removed before.