Impact of Anise, Clove, and Thyme essential oils as feed supplements on the productive performance and digestion of Barki ewes

Abstract

To improve nutritional efficiency in ruminants, dietary additives have a favorable effect. The use of antibiotics as feed additives in animal feeds was prohibited by the European Union after January 2006 (Fandino et al., 2008) due to the health risk of transferring residues into meat and milk. For this reason, alternative additives such as those of plant origin are desired. Essential oils (EO) are generally recognized as safe for human and animal consumption. They could be used as alternatives for antibiotics and growth promoters in ruminant's nutrition (Vakili et al., 2013). They are volatile aromatic compounds present in many plants. Chemically, they are a blend of secondary metabolites commonly composed of terpenoids and phenyl propanoids (Calsamiglia et al., 2007). These compounds have been shown to favorably affect ruminal fermentation and improve nutrients utilization in ruminants (Hristov et al., 1999). Moreover, EO has been evaluated for their antimicrobial activity, and they investigated as rumen modifiers in ruminants (Wallace, 2005). Additionally, they exhibit cytotoxic effects on living cells, and these activities are mostly due to the presence of phenols, aldehydes, and alcohols (Sacchetti et al., 2005). Recent research has focused on exploiting plant bio-actives as natural

Effect of Supplementation of Nigella Sativa Oil on Nutrient Digestibility, Some Blood Metabolites and Rumen Parameters in Karadi Lambs

“…Serum HDL level was numerically decreased in groups fed NSO as compared to the control animals. This result is in concord with that revealed by (El-Essawy et al, 2019a and2019b), who noted that plasma levels of HDL were not influenced by the addition of EO to the diet in Barki lambs and ewes; however, El-Hawy et al, (2018) noticed that feeding ration containing Nigella sativa meal in Barki ewes led to a significant lessen in HDL level comparing to control. There was a trend (P=0.07) in LDL concentration to be higher in lambs fed on T2 (21.43 mg dl 1 ) compared to the control.…”

Role of essential oils in antioxidant capacity and immunity in a rat model of mixed stress

“…Essential oils had a positive effect on egg quality, weight gain, feed, water intake and carcass yield (Attia & Al Harti, 2015;Attia et al, 2017;Sevim et al, 2020). Essential oils have antioxidant features for animals in environmental conditions, high temperature, stress, and over-nutrition (Nameghi et al, 2019;El-Essawy et al, 2019;Attia et al, 2019;Seyidoglu et al, 2019a). In this study, the effects of an EOM containing thyme, anise, peppermint, and eucalyptus with vitamins (B complex, AD 3 E, E) and selenium on liver health, antioxidant status, immunity, and organ weight were examined in rats under stress from a crowded environment and from solation.…”