Effects of Wormwood (Artemisia montana) Essential Oils on Digestibility, Fermentation Indices, and Microbial Diversity in the Rumen

Abstract

This study investigated the effects of essential oil (EO) from three Korean wormwood (Artemisia Montana) plants on in vitro ruminal digestibility, fermentation, and microbial diversity. Dried (0.5 g) soybean meal (SBM) or bermudagrass hay (BGH) were incubated in buffered rumen fluid (40 mL) for 72 h with or without EO (5 mg/kg) from Ganghwa (GA), Injin (IN), or San (SA) wormwood (Experiment 1). Both SA and IN improved (p < 0.05) dry matter digestibility (DMD) of BGH, while GA reduced (p < 0.05) total short-chain fatty acid of BGH and SBM. Besides, SA increased (p < 0.05) numbers of Ruminococcus albus and Streptococcus bovis in SBM. Experiment 2 examined different doses (0, 0.1, 1, and 10 mg/kg) of SA, the most promising EO from Experiment 1. Applying SA at 10 mg/kg gave the highest DMD (L; p < 0.01) and neutral detergent fiber (Q; p < 0.05) digestibility for BGH. Applying SA at 1 mg/kg gave the highest R. albus population (Q; p < 0.05) in SBM. Therefore, SA was better than GA and IN at improving rumen fermentation, and the 0.1 to 1 and 10 mg/kg doses improved ruminal fermentation and in vitro digestibility of SBM and BGH, respectively.

Rumen fermentation, methane concentration, and blood metabolites of cattle receiving dietetical phytobiotic and cobalt (II) chloride

“…Some Artemisia species are known to be able to improve the enzymatic characteristics of the rumen by increasing the digestibility of DM and neutral detergent fiber. Perhaps, this effect is characterized by the selective composition of essential oils that are part of plants [6,21].…”

“…At the same time, phytobiotics are capable of stimulating the microorganisms of the rumen by improving their digestion and use of structural carbohydrates [4] with the formation of more carboxylic acids [5]. Thus, by increasing rumen activity in cattle with feed additives based on plants containing various biologically active substances, there is an improvement in feed digestibility [6].…”

МЕТАБОЛИЧЕСКИЕ ПАРАМЕТРЫ И ИНТЕНСИВНОСТЬ МЕТАНООБРАЗОВАНИЯ В РУБЦОВОЙ ЖИДКОСТИ in vitro ПРИ ТЕСТИРОВАНИИ РАЦИОНОВ С ДОБАВКАМИ РАСТИТЕЛЬНЫХ ПРЕПАРАТОВ И CoCl2

“…В присутствии Salviae folia + CoCl2 показатель был выше контроля на 1,3 %. Полученные результаты косвенно подтверждаются ранее проведенными исследованиями, где было установлено, что эфирное масло некоторых видов Artemisiae улучшало ферментацию в рубце in vitro и усвояемость сухого вещества (25). Этот факт объясняется вероятным повышением содержания терпенов, в значительном количестве присутствующих в экстракте полыни.…”