Carotenoids and fat-soluble vitamins in horse tissues: a comparison with cattle.

This study investigates the presence of carotenoids, retinoids and tocopherol in various horse tissues and compares their levels with that of cattle. The research identifies species-specific differences in the accumulation of these substances, implying potential diverse health benefits for consumers.

Objective of the Study

• The study aims to evaluate the accumulation of carotenoids, retinoids, and tocopherol in horses by analyzing different tissues such as plasma, milk, adipose tissue and liver.
• The contrast between these accumulations in horses is then compared with accumulation levels in cattle to identify any differences.

Methodology

• Four groups of animals were examined with 15 specimens in each group. These groups included lactating cows and mares raised outdoors, as well as indoor-raised foals and calves.
• The horses were of the Hispano-Breton breed, and the cows were a crossbred of Limousine-Retinta.
• These animals were subject to HPLC and HPLC-MS analysis for examining the accumulation of carotenoids, retinoids, and tocopherol in their tissues.
• The fat color of the animals was also studied for possible correlations.

Findings

• The plasma and milk carotenoids, retinol, and tocopherol in cows were found to be similar to the levels found in mares (P>0.05 related to statistical significance).
• However, the liver of the foals exhibited higher accumulations of retinoids compared to calves, indicating species-specific differences (P<0.01, P<0.001 which indicates statistical significance).
• The study points towards potential differences in how certain nutrients are accumulated in different species, which could offer varied health benefits for those consuming these types of meats.

Implications

• These findings suggest that there may be specific mechanisms within different species that control nutrient accumulation. However, the study underscores the need for further research to fully understand these mechanisms and their impact on the nutritional value of different meat products.
• Understanding these differences could potentially lead to strategies for optimising nutrient concentrations in livestock, ultimately enhancing the nutritional benefits derived from consuming these meats.