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Effect of soybean hull supplementation to finishing pigs on the emission of noxious gases from slurry
Author(s) -
WANG Yuan,
CHEN YingJie,
CHO JinHo,
YOO JongSang,
HUANG Yan,
KIM HyoJin,
SHIN SeungOh,
ZHOU TianXiang,
KIM InHo
Publication year - 2009
Publication title -
animal science journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.606
H-Index - 38
eISSN - 1740-0929
pISSN - 1344-3941
DOI - 10.1111/j.1740-0929.2009.00637.x
Subject(s) - slurry , chemistry , dry matter , urea , zoology , ammonia , nitrogen , food science , biochemistry , biology , materials science , organic chemistry , composite material
Ninety six pigs were assigned on the basis of body weight (BW) to one of four dietary treatments (4 pigs per pen and 6 pens per treatment) and fed for 4 weeks. Four 14.85% CP diets were formulated to contain graded levels of soybean hulls at 0, 5, 10, or 15%, respectively. The results showed that treatments did not affect growth performance. Coefficient of total tract apparent digestibility (CTTAD) for dry matter (DM) and blood urea nitrogen (BUN) concentrations were decreased linearly ( P < 0.05) with the addition level of soybean hulls. Slurry ammonia nitrogen (NH 3 ‐N) was not affected with the increased soybean hulls levels, but volatile fatty acids (VFA) were linearly ( P < 0.05) increased. Slurry pH and ammonia (NH 3 ) emissions were significantly decreased by the addition of soybean hulls (Linear, P < 0.05). Conversely, slurry hydrogen sulphide (H 2 S) emissions exhibited an increase with the addition of soybean hulls (Linear, P < 0.10). Our data indicate that soybean hulls inclusion can decrease slurry pH value and NH 3 emission without any negative influence on growth performance.