Review: Effect of Experimental Diets on the Microbiome of Productive Animals

Abstract

The microorganisms that inhabit the gastrointestinal tract are responsible for multiple chains of reactions that affect their environment and modify the internal metabolism, their study receives the name of microbiome, which has become more relevant in recent years. In the near future, the challenges related to feeding are anticipated to escalate, encompassing the nutritional needs to sustain an overpopulated world. Therefore, it is expected that a better understanding of the interactions between microorganisms within the digestive tract will allow their modulation in order to provide an improvement in the immune system, feed efficiency or the promotion of nutritional characteristics in production animals, among others. In the present study, the main effects of experimental diets in production animals were described, emphasizing the diversity of the bacterial populations found in response to the diets, ordering them between polygastric and monogastric animals, and then describing the experimental diets used and their effect on the microorganisms. It is hoped that this study will help as a first general approach to the study of the role of the microbiome in production animals under different diets.

Keywords: animal production; bacteria community; gut; livestock; monogastric; new feedstuff; ruminant.

Figure 1

Digestive system of cows. Microorganisms frequently found in different sections of the gastrointestinal tract compartments.

Figure 2

Digestive tract of sheep. Microorganisms frequently found in different sections of the gastrointestinal tract compartments.

Figure 3

Digestive tract of goats. Microorganisms frequently found in different sections of the gastrointestinal tract compartments.

Figure 4

Digestive tract of chickens. Microorganisms frequently found in different sections of the gastrointestinal tract compartments.

Figure 5

Digestive tract of pigs. Microorganisms frequently found in different sections of the gastrointestinal tract compartments.

Figure 6

Digestive tract of Atlantic Salmon. Microorganisms frequently found in different sections of the gastrointestinal tract compartments.

Figure 7

Digestive tract of rainbow trout. Microorganisms frequently found in different sections of the gastrointestinal tract compartments.

Figure 8

Digestive tract of Nile tilapia. Microorganisms frequently found in different sections of the gastrointestinal tract compartments.