Dr. Jaime Borrell Valls - Veterinaria Digital

All information about veterinary medicine and animal production

Magazine of veterinary information, medicine and zootechnics, specialized in the poultry, pig, ruminant and aquaculture sectors

Magazine of veterinary information, medicine and zootechnics, specialized in the poultry, pig, ruminant and aquaculture sectors


Articles of Dr. Jaime Borrell Valls

Dr. Jaime Borrell Valls - 17/08/2022

Poultry Farming

Calcium physiology and its importance in poultry farming

Calcium is a mineral of vital importance in the welfare of birds and consequently in their health and productive performance. In reality, birds are what their bones are.

Dr. Jaime Borrell Valls - 1/07/2021

Feeding, Poultry Farming

Relationship between nutrition and genetics in poultry production

Relationship between nutrition and genetics in poultry production, which has been a pioneer in industrial-scale meat production in most countries.

Dr. Jaime Borrell Valls - 12/05/2021

Pharmacology, Poultry Farming, Pronutrients

Poultry Pharmacology

The study of pharmacology in poultry and, especially, medicine application, requires a previous knowledge about the physiological characteristic, the breeding systems and the commercial use of this specie. Birds present large differences compared to...

Dr. Jaime Borrell Valls - 1/02/2021

Dissemination, Poultry Farming


The work of improvement and industrialization of poultry production has mostly been developed in the private sector. Hence its poor public recognition, despite its great influence on the socio-economic development of countries from the 80s. 

Dr. Jaime Borrell Valls - 19/09/2019

Immunostimulants, Pathology, Pharmacology, Poultry Farming

Veterinary Immunology

La inmunología es una rama de la biología y las ciencias biomédicas que se ocupa de estudiar las células, los tejidos y los órganos responsables de detectar agentes extraños (antígenos) y desencadenar una acción defensiva.

Dr. Jaime Borrell Valls - 11/12/2016

Feeding, Pharmacology, Poultry Farming, Swine

Actual additives and premixes

The legislation on additives and premixes, in most countries, defines them as substances that are added to the food of healthy animals, in order to increase their productivity and improve environmental respect. However knowledge of the difficulties...

Dr. Jaime Borrell Valls - 4/10/2016

Dissemination, Pathology, Poultry Farming

Diagnostic clues in avian pathology – Infectious and parasitic

The purpose of this document is to provide the correct diagnosis of the most common diseases in poultry, using dichotomous keys based on the signs and lesions observed in animals.

Dr. Jaime Borrell Valls - 9/05/2016

Poultry Farming

Dichotomous key to diagnose disorders of the eggshell

The clinical alterations in the eggshell mostly caused: Egg without shell, immature Reproductive system, deficiencies  of vitamin D3 and B12, calcium, phosphorus or magnesium, too much heat No… pass to 2 Eggs with shell

Dr. Jaime Borrell Valls - 13/01/2015

Aquaculture, Dissemination, Feeding


We should consider that, in nature, nutrition of fish evolves as a function of age following a scheme that plays from the fertilized egg to fry, all stages of its evolution and zoological group. So the embryos feed on egg yolk, newborns eat algae,...

Dr. Jaime Borrell Valls - 3/10/2013

Pathology, Swine

Principal diseases in Industrial Pig Production. Part 1

Introduction: Diseases in fattening pigs and reproductive sows, in industrial breeding, are similar in all countries and zones due to uniform base provided by genetics, equipments end feed given to them. Several microorganisms join this base and...

Dr. Jaime Borrell Valls - 11/04/2013

Poultry Farming

Genetic of the canary and canary-like species. Parts 1 to 3

Introduction Our country has contributed along the history with uncountable zoological species that one time selected and improved has been the base of different avian activities and livestock. One example of this is the canary (Serinus canaries)...

Dr. Jaime Borrell Valls - 7/01/2013

Poultry Farming

Principal diseases in industrial poultry. Part 1 TO 4.

PRINCIPAL DISEASES IN INDUSTRIAL POULTRY. PART 1. Introduction: The diseases in broilers and layers, from industrial breeding, are similar in all countries and regions due to the common base provided by genetics, equipments and feed they eat. Some...

Dr. Jaime Borrell Valls - 30/05/2012

Events, Feeding, Flavorings, Poultry Farming, Pronutrients

Aromatic Pronutrients in Aviculture and its use. Part 1

1. SUMMARY Aromatic plants contain substances of vital importance for its biology whose presence allows to the plant, attracting animals who will help to their diffusion, at the same time that will be a defence mechanism against micro-organisms...

Dr. Jaime Borrell Valls - 4/07/2011


Feed Security –Exposed –

With the appareance in Europe of contamined vegetables by E.coli bacteria, which is entero hemorragic (EHEC) serotype O104:H4 and with lethal effects on the people who ate them. What happened is one of the most usual feed toxo infections that...

Dr. Jaime Borrell Valls - 2/05/2011

Mycotoxins, Pathology, Swine

Patology in Swine.

Introduction   The swine pathology is similar in different countries and regions due to the industrialization and intensification of the production.   In summary, we can divide the diseases in pigs in four basic areas: digestive processes,...

Dr. Jaime Borrell Valls - 1/11/2010

Digestives, Pathology, Poultry Farming

Digestive system diseases caused by microorganisms and toxic substances

Gastrointestinal injuries by microorganisms and toxic Presented at the XXII National Congress of Poultry Panama. November 12, 2010 Dr. Jaime Borrell, Biovet,S.A   To see the full article in PDF just click the link below

Dr. Jaime Borrell Valls - 8/09/2010

Mycotoxins, Pathology, Poultry Farming

Toxic hepatoenteritis in poultry

Some Enterobacteriae producers of SH2 are responsible for the appearance of infectious toxic hepatoenteritis in birds, which produce inequality and retardation in growth, as well as bad conversion and less productivity. The control of...

Dr. Jaime Borrell Valls - 7/09/2010

Mycotoxins, Pathology, Poultry Farming

Avian Pathology

Introduction   The pathology of industrially-bred broilers is similar in all countries and regions, due to the uniform base provided by genetics, facilities and food supplied to them. To this base are added the various organisms that become...

Dr. Jaime Borrell Valls - 12/08/2010

Pathology, Poultry Farming

Haemolytic Germs in Poultry Patology

I. Summary   Since October 1987, we have observed each fall, apart from the migration of a specie of starlings from north to south of the peninsula, the introduction of certain respiratory diseases in chickens. This infectious disease, very...

Dr. Jaime Borrell Valls - 1/07/2010


Veterinary Vaccines: Preparation, Control, Distribution and Administration

Immune protection against animal diseases can be obtained actively by applying vaccines or passively by the use of serum. The application of vaccines needs the organic reaction which is conditioned by the characteristics of the vaccine, the...

Dr. Jaime Borrell Valls - 30/06/2010

Pathology, Poultry Farming

Avitaminosis, Marek and Trichothecenes in Poultry Farming

Since 1996, it has been discussing the use of the vaccine for Marek’s disease in 1 day old broilers. The genetic improvements, before 1996, have supposed a little nutritional disorder (deficiencies of Vitamin B) which was aggravated due to an...

Dr. Jaime Borrell Valls - 21/06/2010

Pharmacology, Poultry Farming

Basic Concepts to establish Pharmacological Treatments in Poultry.

Nowadays, poultry companies have become a producer industry on a large scale. The poultry industrialization makes necessary the systematization of all its own aspects of the industry. Once this reality has been assumed, the designer of every single...

Dr. Jaime Borrell Valls - 18/06/2010

Pathology, Poultry Farming

Hyperpigmentation of the eggshell

The color of the eggshell depends on several pigments, and especially on ovoporphyrins (avian protoporphyrins). Protoporphyrins are waste products obtained from the recycling of haemoglobin and its deposit on its eggshell increases for the following...

Dr. Jaime Borrell Valls - 16/06/2010

Pathology, Swine

Porcine Dermatitis-Nephopathy Syndrome and its Inmunological

From the first descriptions, by Ligniers and Spitzen 1902 and the later fixation by Brumpt in 1910 to nowadays, several microorganisms have been included and excluded to the Actinobacillus type.A. mallei was traspased to Pseudomona mallei,while...

Dr. Jaime Borrell Valls - 24/05/2010

Mycotoxins, Pathology, Poultry Farming

Differential diagnostic of mouth and digestive injuries in poultry farming

Sometimes, mouth injuries in birds (presents in tongue and beak) create confusion before giving clinical diagnostic. In these cases, it is important to follow the next criteria: in poultry farming, injuries are never isolated. They always must...


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