Dairy Cow Feed Supplementation Alternatives for Diminishing Methane and Carbon Dioxide Concentration In Vitro

The objective of this study was to evaluate the effect of five different supplementations [Yeast- Saccharomyces cerevisiae (YS), tea leaves-Camellia sinensis (TL), Red Sorghum (RS), soybean oil (SBO) and Chinese soapberry - Sapindus mukorossi (CS)] on the reduction of methane (CH_4) in vitro conditions. Tests were done by adding each of the 5 supplementations (0.005 g X1010 for YS; 5 g for TL, RS and CS; and 5 mL for SBO) to the ruminal liquor (1.5 L/digester) of a cow fed Total Mixed Ration and incubated for 24 h. Results show that all the supplementations significantly decreased CH_4 concentration compared to the control treatment (p＜0.05). In vitro CH_4 concentration was reduced from 56.75 to 11.14, 13.32, 19.88, 20.07%, respectively and 30.52% for SBO, TL, RS, CS and YS, respectively. CH_4 concentration tended to be higher during the first hours of incubation in the control treatment compared to all supplementations. However, the supplementations reduced CH_4 concentration during the first part of the incubation. This demonstrates that the supplementations used in this experiment are very effective to reduce CH_4 concentration as early as 2 h after supplemented. Nevertheless, no significant interactions between treatments × time were found in CH_4 concentration (p＞0.001). CH2 concentration was significantly higher for the control treatment (1769.07 ppm) and YS (1683.41 ppm) compared to TL (1342.98 ppm), CS (1173.61 ppm), RS (1193.39 ppm) and SBO (991.25 ppm) supplementation (p＜0.05). All the supplementations, but especially SBO, have the potential to diminish greenhouse gas production in vivo and may be alternatives for the mitigation of global warming.

並列關鍵字

Dairy cow (bos taurus) ； greenhouse gas ； global warming ； soybean oil ； tea (camellia sinensis)

國際替代計量

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