Dr. Marco A. Hernández - 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. Marco A. Hernández

Dr. Marco A. Hernández - 10/09/2020


Ruminant milking systems

The modern method for milking milk is mechanical milking, which uses the suction force of a vacuum and, like a vacuum cleaner, draws the milk from each teat intermittently, so that the vacuum is not applied continuously, as this can damage the teat....

Dr. Marco A. Hernández - 26/08/2020

Poultry Farming

Chicken breeds and productivity

Below it is included a list where the main chicken breeds and varieties used in current breeding programs, or used for the development of synthetic breeds, is detailed in Animal Production.

Dr. Marco A. Hernández - 3/07/2020


Control of neonatal diarrhea in calves

The causes of diarrhea can be classified as either infectious or non-infectious. Within the environmental influence, deficiencies in the improper administration of milk and inadequate housing conditions are the most important non-infectious...

Dr. Marco A. Hernández - 10/06/2020

Farm management, Poultry Farming

Energy saving in poultry farming

Energy in poultry production systems has a direct impact on the thermoregulation of the birds, the ventilation of the house and the quality of the air. Therefore, the rational and well-planned use of energy savings in poultry farming; In addition,...

Dr. Marco A. Hernández - 27/05/2020


Recirculation systems. Sustainable aquaculture

Aquaculture production is in full expansion and development worldwide. The demand for seafood products is increasing while aquaculture resources are maintained. Many of the species that have been fished up to now have reached their maximum...

Dr. Marco A. Hernández - 21/05/2020


The influence of lighting on fish production

Since the cultivation of aquatic organisms has become popular for being an economically and ecologically sustainable activity, various studies have been carried out on the control of physical-chemical parameters and their interaction with the...

Dr. Marco A. Hernández - 18/05/2020


Ruminants and climate change

In the last decade we have witnessed the transformation of ecosystems by the effect of global climate change, which threatens the well-being of current and future generations. Experts have warned of the excessive accumulation of carbon dioxide in...

Dr. Marco A. Hernández - 23/04/2020

Pathology, Poultry Farming

Campylobacteriosis, an emerging problem in poultry production

The Campylobacteriosis (Campylobacter jejuni) is a bacterium that can be found as a normal host in the intestine of laying hens, broilers, turkeys and ostriches, which can cause liver disease in these birds.

Dr. Marco A. Hernández - 21/04/2020

Poultry Farming

Key aspects in poultry production

Poultry production is the most dynamic and technologically advanced livestock activity; it is also a strategic sector to produce food for society. To continue along this line and be characterized as an economically sustainable production must meet...

Dr. Marco A. Hernández - 15/04/2020


Sea lice in salmonids, control mechanisms

In the last decade of mariculture, new parasitic diseases have emerged that afflict seafood products. Among these diseases we can mention the one caused by sea lice in salmonids. The life cycle of the sea lice, like that of all crustaceans,...

Dr. Marco A. Hernández - 6/04/2020

Farm management, Poultry Farming

Evolution of cages and facilities for laying hens

From the time of the Romans, a greater amount of information was generated about the breeding of birds; being hens and geese the main birds raised by the Romans in small farms. Chicken meat was highly appreciated by that culture, something we can...

Dr. Marco A. Hernández - 12/03/2020

Farm management, Swine

Facilities in the pig sector. Pig housing

The following general requirements must be considered in the construction of pig housing: The land must have adequate drainage to avoid diseases such as rheumatism, arthritis and pneumonia in the pigs. The orientation of the accommodation when...

Dr. Marco A. Hernández - 10/03/2020

Farm management, Poultry Farming

Poultry house disinfection

Poultry farming involves a variety of risks associated with the environment and constant exposure to various contaminants: viruses, bacteria, parasites, fungi and dust, which affect weight gain and increase mortality. This is why poultry house...

Dr. Marco A. Hernández - 3/03/2020

Farm management, Poultry Farming

Cages for laying hens – poultry production

Advantages that we can mention in Laying hen cages: • Birds are less exposed to environmental pollutants and circulating infectious pathogens. • The eggs do not come into contact with the chickens or their feces avoiding their waste by...

Dr. Marco A. Hernández - 3/03/2020

Antibiotics, Poultry Farming

Prudent use of antibiotics in poultry production

The production of antibiotic-free chickens is a global trend: The use of growth-promoting antibiotics has been banned or regulated by some countries, and, many consumers are increasingly avoiding foods containing antibiotics. In view of this...

Dr. Marco A. Hernández - 25/02/2020

Farm management, Swine

Piglet handling

In every pig farm, there must be a management plan for the piglets handling. That is a fundamental key for the production of healthy pigs that reach their productive parameters in optimal time. Before farrowing, the sow must have dry and clean...

Dr. Marco A. Hernández - 14/02/2020

Farm management, Swine

Conditioning of pig barn for pig production

The latest trend in animal protein production is increased production under an animal welfare improvement scheme. In pig production, the use of alternative systems is a global trend that seeks to improve the quality of life of pigs within the pig...

Dr. Marco A. Hernández - 3/02/2020

Poultry Farming

Cage-free egg production

Animal welfare is an important attribute within the concept of food quality and consumers expect animal-related products, especially food, to be produced with respect for the health and comfort of the animals. Recent surveys carried out by the...

Dr. Marco A. Hernández - 30/01/2020

Farm management, Feeding, Swine

Feeding of hyperprolific sows

Today, genetic improvement in pigs has resulted in an increase in the prolificacy of litters; however, there has been no updating of the nutritional requirements of current breeding sows, mostly hyperprolific sows, throughout the cycle. Also, it...


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