Effects of supplemental thyme extract (Thymus vulgaris L.) on growth performance, intestinal microbial populations, and meat quality in Japanese quails

The Effect of Thyme Essential Oil (Thymus Vulgaris) Added to Quail Diets on Performance, Some Blood Parameters, and the Antioxidative Metabolism of the Serum and Liver Tissues

“…In the present study, the greatest increase in body weight and daily weight gain was determined in the trial group that received 450 mg/kg of thyme essential oil. The results of the present study were found to be in agreement with those of previous studies, which revealed that thyme did not affect body weight when fed at low levels (Mehdipour et al, 2014;Saleh et al, 2014), but showed an increasingly significant effect when given at higher levels (Safa & Al-Beitawi, 2009;Toghyani et al, 2010).…”

“…In further studies carried out in broiler chickens, it was reported that thyme did not affect feed intake (Toghyani et al, 2010) but significantly improved the feed conversion ratio (Tolba & Hassan, 2003;Toghyani et al, 2010). On the other hand, it was also reported that 100 mg/kg of thyme extract (Mehdipour et al, 2014) and 1 g/kg of thyme essential oil did not alter the feed intake or feed conversion ratio of quails (Khaksar et al, 2012). The differences observed between the results of these studies are attributed to possible differences in the form (extract, powder, etc.…”

“…In the present study, when incorporated into feed at a level of 450 mg/kg, thyme essential oil significantly increased body weight on days 30, 37 and 44, and daily weight gain throughout the study period, excluding the intervals between days 30-37 and 44-51 Table 2). Previous studies have shown that, when quail rations were supplemented with 100 mg/kg of thyme extract (Mehdipour et al, 2014) and broiler rations were supplemented with 100 and 200 mg/kg of thyme essential oil, neither body weight not daily weight gain were affected (Saleh et al, 2014). Furthermore, it has been reported that thyme powder significantly increases body weight when incorporated into feed at a level of 5 g/kg (Toghyani et al, 2010); and significantly increases both body weight and daily weight gain when added to feed rations at percentages of 0.5, 1, 1.5 and 2% (Safa & Al-Beitawi, 2009).…”

“…It is well known that thymol and carvacrol not only have an antioxidant effect The Effect of Thyme Essential Oil (Thymus Vulgaris) Added to Quail Diets on Performance, Some Blood Parameters, and the Antioxidative Metabolism of the Serum and Liver Tissues but also antibacterial, antiviral and aroma regulatory effects (Aeschbach et al, 1994;Grossoet al, 2010). While some studies suggest that the supplementation of feed with thyme improves the performance parameters of poultry (Abd El-Latif et al, 2002;Tolba & Hassan, 2003) some other studies suggest that thyme has no effect (Mehdipour et al, 2014;Saleh et al, 2014;Popović et al, 2016). Furthermore, thyme essential oil has also been reported that significantly reducing in levels of triglyceride, total cholesterol and glucose levels (Khaksar et al, 2012).…”

İçme Suyuna Farklı Düzeylerde İlave Edilen Esansiyel Yağ Karışımının (Nane-Kekik-Anason Yağı) Bıldırcınlarda Büyüme Performansı, Karkas Parametreleri ve İleumun Histolojik Yapısı Üzerine Etkileri

“…Thymus vulgaris L. (thyme) is also an aromatic plant belonging to Lamiaccea family. It has been a subject of considerable interest as a medicinal and therapeutic agent worldwide [22] . The pharmacological effect of thyme is attributed to carvacrol and thymol which are main bioactive components of thyme [23] .…”