Factors Influencing Equine Gut Microbiota: Current Knowledge.

The research article explores the factors affecting the balance of the equine gut microbiota, which plays a crucial role in food digestion and overall health of horses. Arouding factors include nutrition, management, medical substances, stress, and animal-specific factors.

Understanding the Equine Microbiota

• The microbiota of a horse’s gastrointestinal tract is crucial for nutrient digestion. Its disruption can cause debilitating illnesses like colic and laminitis.
• The article highlights the importance of new technologies such as next-generation sequencing and bioinformatics in understanding and analysing the equine microbiota.

Factors Affecting Equine Gut Microbiota

• The paper identifies several factors that influence the balance of equine gut microbiota. These include nutrition and management, such as diet, supplements and exercise; medical substances, such as antimicrobials, anthelmintics, anesthetics; animal-related factors, like breed and age; various pathological conditions including colitis, diarrhea and colic; and stress-related factors, such as transportation and weaning.

Negative Changes in Equine Gut Microbiota

• A decrease in the microbial diversity and richness can lead to instability in the gut. A decrease in the Lachnospiraceae and Ruminococcaceae family members, which are vital to gut homeostasis, can also adversely affect the equine gut.
• The article notes an increase in Lactobacillus and Streptococcus, which can disrupt the balance of the gut microbiota. Meanwhile, a decrease in lactic acid utilizing bacteria and butyrate-producing bacteria, which have anti-inflammatory properties, can result in a negative shift in the microbiota.

Inconsistencies in Microbiota Shifts

• Shifts in Firmicutes and Bacteroidetes, which are common bacteria in the gut, often occur in certain treatments or when comparing healthy and unhealthy animals. However, the article mentions that these shifts are inconsistent, highlighting the need for further understanding and research.

Future Directions

• Given the valuable information we now have on factors influencing equine gut microbiota, the paper suggests that the next step is to start manipulating the microbiota of horses. This implies that future research and intervention strategies on equine gut microbiota might aim at manipulation of microbiota balance for better health outcomes.