TY - JOUR
T1 - Influence of fiber type on enteric methane production from growing-finishing pigs and subsequent biochemical methane potential of excreted feces
AU - Sattarova, Elvira
AU - Hansen, Michael Jørgen
AU - Jørgensen, Henry
AU - Lund, Peter
AU - Knudsen, Knud Erik Bach
AU - Nørgaard, Jan Værum
AU - Møller, Henrik Bjarne
PY - 2025/2
Y1 - 2025/2
N2 - Three diets differing in type and amount of total fiber (TF) were formulated in order to investigate the effects of fiber type and amount on enteric methane (CH4) production from growing-finishing pigs and subsequent biochemical CH4 potential of the excreted feces. The experimental diets consisted of a control diet based on wheat, barley, and soybean meal, a diet with high content of insoluble TF based on wheat bran (WB), and a diet with high content of soluble TF based on sugar beet pulp (SBP). Eighteen female growing-finishing pigs were allocated to one of three experimental diets according to a replicated incomplete 3 * 2 Latin square design. After adaptation to the diet and metabolic cages, urine and feces samples were collected for 4 days, including 48 hours of gas exchange measurements in respiration chambers. Excreted feces were collected when pigs weighed 64.8 ± 3.8 kg and 89.7 ± 4.4 kg to determine the biochemical CH4 potential (BMP) of the feces in batch experiments. The enteric CH4 production expressed per TF intake was affected by the type of TF, with the lowest CH4 production obtained when pigs were fed a WB diet (P < 0.02). However, the decreased methanogenesis in the hindgut of the pigs was counteracted by the increased BMP90 of the feces. On the other hand, although feeding pigs with an SBP diet resulted in the highest enteric CH4 production, the CH4 derived from feces also remained high. In conclusion, the fiber type alters the methanogenesis in the hindgut of pigs and the subsequent BMP90 of the feces, and, therefore, needs to be considered during diet formulation in the context of minimizing enteric CH4 production and maximizing the BMP90 of the feces.
AB - Three diets differing in type and amount of total fiber (TF) were formulated in order to investigate the effects of fiber type and amount on enteric methane (CH4) production from growing-finishing pigs and subsequent biochemical CH4 potential of the excreted feces. The experimental diets consisted of a control diet based on wheat, barley, and soybean meal, a diet with high content of insoluble TF based on wheat bran (WB), and a diet with high content of soluble TF based on sugar beet pulp (SBP). Eighteen female growing-finishing pigs were allocated to one of three experimental diets according to a replicated incomplete 3 * 2 Latin square design. After adaptation to the diet and metabolic cages, urine and feces samples were collected for 4 days, including 48 hours of gas exchange measurements in respiration chambers. Excreted feces were collected when pigs weighed 64.8 ± 3.8 kg and 89.7 ± 4.4 kg to determine the biochemical CH4 potential (BMP) of the feces in batch experiments. The enteric CH4 production expressed per TF intake was affected by the type of TF, with the lowest CH4 production obtained when pigs were fed a WB diet (P < 0.02). However, the decreased methanogenesis in the hindgut of the pigs was counteracted by the increased BMP90 of the feces. On the other hand, although feeding pigs with an SBP diet resulted in the highest enteric CH4 production, the CH4 derived from feces also remained high. In conclusion, the fiber type alters the methanogenesis in the hindgut of pigs and the subsequent BMP90 of the feces, and, therefore, needs to be considered during diet formulation in the context of minimizing enteric CH4 production and maximizing the BMP90 of the feces.
KW - Anaerobic digestionGreenhouse gasGrowing-finishing pigsMethaneTotal fiber
UR - http://www.scopus.com/inward/record.url?scp=85215363236&partnerID=8YFLogxK
U2 - 10.1016/j.anifeedsci.2025.116228
DO - 10.1016/j.anifeedsci.2025.116228
M3 - Journal article
SN - 0377-8401
VL - 320
JO - Animal Feed Science and Technology
JF - Animal Feed Science and Technology
IS - 116228
M1 - 116228
ER -