The effects of dietary oregano essential oil on live performance, carcass yield, serum immunoglobulin G level, and oocyst count in broilers

Alp, Müjdat; Midilli, Mustafa; Kocabağlı, Neşe; Yılmaz, Hüseyin; Turan, Nuri; Gargılı, Ayşen; Acar, N.

doi:10.3382/japr.2012-00551

Cited by 55 publications

(41 citation statements)

References 17 publications

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“…The average feed consumption was greater than that suggested for the manual feeding of Cobb 500 broilers (Cobb-Vantress-Brasil, 2008), indicating that any health challenge to which the broilers were subjected with 5% bedding mixed in the diet did not affect the variables. The performance results in the initial phase are in agreement with those obtained by Kirkpinar et al (2011) and Alp et al (2012), who found no difference for feed intake, weight gain and feed conversion at day 21 in broilers administered 300 mg OEO/kg diet. Zanini et al (2013) also observed no significant difference in weight gain, either in the initial phase or in the entire experimentation phase, when broiler feed was supplemented with OEO at 0.5 g/kg and 1 g/kg.…”

Section: Resultssupporting

confidence: 90%

“…Oregano essential oil has been associated with antifungal (Bedoya-Serna et al, 2018), antibacterial, and antioxidant activity in vitro (Gandra et al, 2013) and in vivo (Zanini et al, 2013;Ri et al, 2017), stimulation of enzyme secretion (He et al, 2017), and modulation of microbial colonization of the gastrointestinal tract and intestinal morphology (Dias et al, 2015;He et al, 2017). However, reports of its effects on the performance and carcass characteristics of broilers have been inconsistent, with positive effects on these characteristics (Mathlouthi et al, 2012;Peng et al, 2016) as opposed to no effects (Alp et al, 2012;Koyama et al, 2014) being detected.…”

Section: Introductionmentioning

confidence: 99%

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Oregano essential oil in the diet of broilers: performance, carcass characteristics, and blood parameters

Eler¹,

Gomes²,

Trindade³

et al. 2019

SA J. An. Sci.

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Efficacy of the phytogenic feed additive oregano essential oil (OEO) (Origanum vulgare L.) was assessed as an alternative to an antibiotic as a growth promoter (AGP) in broiler diets. Three hundred male broiler chicks were assigned to five treatments, which consisted of diets with different levels of OEO (300, 600, and 900 mg/kg of diet), a negative control, and a positive control. Broiler performance was evaluated from 1 to 21 and 1 to 39 days old. From 1 to 39 days old, the broilers of the negative control group presented lower feed intake than those fed OEO300. No significant effect was observed on weight gain. The greatest feed conversion ratio occurred in the positive control group. Broilers treated with OEO300 had greater carcass yield than those in the positive control group. The haemogram, leukogram, and heterophil/lymphocyte ratio were positively influenced by OEO300. Red blood cell and leukocyte counts increased in a dose-dependent manner in broilers fed OEO-supplemented diets, while broilers in the positive control group had the lowest levels of haematocrit, mean corpuscular haemoglobin concentration, and plasma protein. Differential leukometry revealed lymphocyte numbers were increased with OEO treatment and reduced in the positive control group. For hepatic and renal metabolism, the broilers in the positive control group exhibited the greatest serum activities of aspartate aminotransferase, alanine aminotransferase, gamma-glutamyl transferase, and alkaline phosphatase. Although more studies on its efficacy are needed, OEO at 300 mg/kg may be used as a phytogenic additive in broiler diets, especially those without AGP.

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Section: Resultssupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Oregano essential oil in the diet of broilers: performance, carcass characteristics, and blood parameters

Eler¹,

Gomes²,

Trindade³

et al. 2019

SA J. An. Sci.

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“…the serum biochemical analyses of hens revealed that higher doses of OeO caused changes in the metabolism of proteins by increasing serum levels of globulins, in accordance to results reported by Alp et al (2012). these authors detected an increase on globulin levels of broilers fed with 300 mg.kg -1 of OeO.…”

Section: Discussionsupporting

confidence: 88%

Oregano essential oil (Origanum vulgare) to feed laying hens and its effects on animal health

Migliorini

Boiago

Roza

et al. 2019

An. Acad. Bras. Ciênc.

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This study evaluated the effect of oregano essential oil added to the feed of commercial laying hens. this research was focused on the analysis of biochemical changes linked to hepatic function, and protein and lipid metabolism. It was used 240 laying hens (59 weeks-old) distributed in a completely randomized design of six treatments (five repetitions with eight birds each). The experiments were constituted by a control treatment (CT) with the inclusion of zinc bacitracin and five treatments of oregano essential oil (OeO: 0, 50, 100, 150, and 200 mg.kg-1), respectively. After 28 days of feeding, an increase on serum levels of total proteins and globulins was observed on groups t150 and t200, as well as an increase on albumin levels on group CT. After 84 days of feeding, a significant reduction on total proteins and albumin was observed on group t200, as well as an increase in serum triglycerides. OeO at 200 mg.kg-1 increased globulin levels on day 28, which may be considered an effect in the inflammatory response, which increases serum immunoglobulins and proteins.

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“…However, the thyme or oregano can increase the IgG levels to a certain extent. Different levels (150-450 ppm) of clove essential oils had no effect on IgM and IgG levels in broilers (Mehr et al, 2014) and the oregano essential oil did not affect serum IgG in the broilers at 42 days (Alp et al, 2012), no significant difference (P>0.05). Feeding broilers a diet supplemented with 60-240 mg/kg of essential oils, containing 25% thymol and 25% carvacrol, did not affect TNF-α levels, but the treatment group have a low level compared with control group (P>0.05) (Du et al, 2016).…”

Section: Resultsmentioning

confidence: 99%

Effects of oral administration of various essential oils on blood metabolites, intestine development, microbial enumeration and meat quality in broilers

Liu

Song

Wang

et al. 2019

IJAR

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A total of eighty 21-day-olds (1.1±0.01kg) ROSS 308 broilers were randomly allocated into 4 groups, with 20 replicates per group and 1 chicken per replicate per cage. Three experimental groups (CAR, THY, ORE group) were given oral administration of 200ìL essential oils (carvacrol, thyme and oregano) at 18:00h every day. The results showed no significant differences on blood metabolites among each group (P>0.05). The villus height of the small intestines in the CAR group increased significantly (P less than 0.05) from 1360.10 to 1552.54ìm as compared to the control group, the goblet cell counts in the THY and ORE groups significantly increased by 20.91% (P less than 0.05) and 31.82% (P less than 0.05), respectively, compared to the control group. The E.coli and Salmonella in ORE group significantly decreased by 11.16% (P less than 0.05) and 9.54% (P less than 0.05), respectively, compared to the control group. The Redness (a*) values of the muscles of the CAR and ORE groups were observed to increase significantly (P less than 0.05) from 3.58 to 7.95 and 6.86, respectively, compared to the control group. In conclusion, oral administration of the essential oils carvacrol, thyme, and oregano promoted intestinal development, improved the intestinal environment and the meat quality of broilers.

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The effects of dietary oregano essential oil on live performance, carcass yield, serum immunoglobulin G level, and oocyst count in broilers

Cited by 55 publications

References 17 publications

Oregano essential oil in the diet of broilers: performance, carcass characteristics, and blood parameters

Oregano essential oil in the diet of broilers: performance, carcass characteristics, and blood parameters

Oregano essential oil (Origanum vulgare) to feed laying hens and its effects on animal health

Effects of oral administration of various essential oils on blood metabolites, intestine development, microbial enumeration and meat quality in broilers

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