Benetel Gabriela, Fagundes Gisele Maria, de Méo-Filho Paulo, Silva Thaysa Dos Santos, Welter Katiéli Caroline, Melo Flávia Alves, Lobo Annelise Aila Gomes, Frighetto Rosa Toyoko Shiraishi, Berndt Alexandre, Muir James Pierre, Bueno Ives Cláudio da Silva
Department of Animal Science, Universidade de São Paulo-USP, Av. Duque de Caxias Norte, 225, Pirassununga 13635-900, SP, Brazil.
Department of Animal Science, Universidade Federal de Roraima-UFRR, BR 174, Km 12, Boa Vista 69300-000, RR, Brazil.
Animals (Basel). 2024 Jun 2;14(11):1664. doi: 10.3390/ani14111664.
Essential oils (EOs), as rumen additives, decreased CH emissions in in vitro trials but results from in vivo studies are still limited. We investigated the effects of (OEO) and (TEO) EOs on in vivo methane emissions from Nellore beef cattle. Six adult rumen-cannulated Nellore cattle were used in a double 3 × 3 Latin square design. Treatments consisted of three diets containing either 3 mL OEO per kg of concentrate, 3 mL TEO/kg of concentrate, or no EO addition. The experimental period consisted of three 21 d feeding periods and methane production was measured using the sulfur hexafluoride (SF6) technique from Day 16 to Day 21 of each feeding period. Intake, total apparent digestibility (dry matter as well as neutral and acid detergent fiber), and rumen parameters (pH, ammoniacal nitrogen concentration, and short-chain fatty acids) were also evaluated. The EOs did not decrease CH emissions and had no effect on rumen parameters.
精油（EOs）作为瘤胃添加剂，在体外试验中可减少甲烷排放，但体内研究的结果仍然有限。我们研究了牛至精油（OEO）和百里香精油（TEO）对内罗毕肉牛体内甲烷排放的影响。六头成年瘤胃插管的内罗毕牛采用双3×3拉丁方设计。处理方式包括三种日粮，分别为每千克精料添加3毫升OEO、每千克精料添加3毫升TEO或不添加EO。试验期包括三个21天的饲养期，在每个饲养期的第16天至第21天使用六氟化硫（SF6）技术测量甲烷产量。还评估了采食量、总表观消化率（干物质以及中性和酸性洗涤纤维）和瘤胃参数（pH值、氨氮浓度和短链脂肪酸）。精油并未减少甲烷排放，且对瘤胃参数没有影响。
