Chee, Kew M.
(College of Life Sciences and Biotechnology, Korea University)
,
Chun, Kwang S.
(College of Life Sciences and Biotechnology, Korea University)
,
Huh, Bong D.
(College of Life Sciences and Biotechnology, Korea University)
,
Choi, Jin H.
(College of Life Sciences and Biotechnology, Korea University)
,
Chung, Mahn K.
(College of Life Sciences and Biotechnology, Korea University)
,
Lee, Hyung S.
(American Soybean Association)
,
Shin, In S.
(American Soybean Association)
,
Whang, Kwang Y.
(College of Life and Environmental Sciences, Korea University)
Feeding values of soybean hulls (SH) were compared to those of wheat bran (WB) for swine diets by chemical compositions, a digestion trial, a preference test by self-selection, and two feeding trials. The SH and the WB appeared to have, on airdry basis, 11.1 vs. 15.4% CP, 32.5 vs. 8.7% crude fiber (...
Feeding values of soybean hulls (SH) were compared to those of wheat bran (WB) for swine diets by chemical compositions, a digestion trial, a preference test by self-selection, and two feeding trials. The SH and the WB appeared to have, on airdry basis, 11.1 vs. 15.4% CP, 32.5 vs. 8.7% crude fiber (CF), 36.8 vs. 10.7% ADF, 0.6 vs. 0.1% Ca, and 492 vs. 92 ppm Fe, respectively. Lysine and total sulfur-containing amino acids in the SH were 0.66 vs. 0.37%, respectively. Apparent digestibility values of the SH were 71% for dry matter, 50% for CP, and 74% for CF. Apparent digestible energy and MEn values of the SH were 2,420 and 2,370 kcal kg$^-1$, respectively, which were comparable to those of the WB, 2,420 and 2,275 kcal kg$^-1$ (NRC, 1998), respectively. The first feeding trial was conducted with 72 crossbred growing pigs with an average weight of 29.6 kg. The pigs when fed the diets containing 0, 6 and 10% SH by replacing the WB on a weight basis for 42 days did not show significant differences in body weight gain and feed/gain ratio among the treatments. The same trends were observed in the second trial with 60 crossbred finishing pigs with an average weight of 64.5 kg when fed the diets containing 12% SH or WB for 41 days. Back-fat thickness and adjusted loin eye muscle area of the finisher pigs were also not significantly different between the two groups. When allowed to self-select from two different feed troughs containing 10% SH or WB for two weeks, two groups of 80 pigs with 10 pigs per pen consumed the two diets exactly in equal proportion. In conclusion, the soybean hulls can be included up to 10 and 12% for growing or finishing pig diets, respectively, replacing the wheat bran on a weight basis without any adverse effects on palatability of diets and animal performances.
Feeding values of soybean hulls (SH) were compared to those of wheat bran (WB) for swine diets by chemical compositions, a digestion trial, a preference test by self-selection, and two feeding trials. The SH and the WB appeared to have, on airdry basis, 11.1 vs. 15.4% CP, 32.5 vs. 8.7% crude fiber (CF), 36.8 vs. 10.7% ADF, 0.6 vs. 0.1% Ca, and 492 vs. 92 ppm Fe, respectively. Lysine and total sulfur-containing amino acids in the SH were 0.66 vs. 0.37%, respectively. Apparent digestibility values of the SH were 71% for dry matter, 50% for CP, and 74% for CF. Apparent digestible energy and MEn values of the SH were 2,420 and 2,370 kcal kg$^-1$, respectively, which were comparable to those of the WB, 2,420 and 2,275 kcal kg$^-1$ (NRC, 1998), respectively. The first feeding trial was conducted with 72 crossbred growing pigs with an average weight of 29.6 kg. The pigs when fed the diets containing 0, 6 and 10% SH by replacing the WB on a weight basis for 42 days did not show significant differences in body weight gain and feed/gain ratio among the treatments. The same trends were observed in the second trial with 60 crossbred finishing pigs with an average weight of 64.5 kg when fed the diets containing 12% SH or WB for 41 days. Back-fat thickness and adjusted loin eye muscle area of the finisher pigs were also not significantly different between the two groups. When allowed to self-select from two different feed troughs containing 10% SH or WB for two weeks, two groups of 80 pigs with 10 pigs per pen consumed the two diets exactly in equal proportion. In conclusion, the soybean hulls can be included up to 10 and 12% for growing or finishing pig diets, respectively, replacing the wheat bran on a weight basis without any adverse effects on palatability of diets and animal performances.
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제안 방법
1 Two groups of 80 pigs each with average body weight of 55 and 60 kg for tests 1 and 2, respectively, were allowed to self-select between the two diets containing 10% level ofsoybean hulls or wheat bran for two weeks.
The purposes of this study were to investigate the nutritional values of local soybean hulls and to evaluate a possible use of the hulls as a replacement for the local wheat bran in growing and finishing pigs.
Two feeding tests each with different groups of eighty, three-way crossbred (LxYxD) female pigs, were conducted for two weeks to compare preference of the diets containing 10% soybean hulls or wheat bran (Table 6). All experimental procedures including the dietary formulations were the same for the two tests except the mean body weight of pigs, 55 and 60 kg for tests 1 and 2, respectively.
대상 데이터
(1995). Seven castrated male, crossbred (LandracexYorkshirexDuroc) pigs with an average of 56 kg body weight were individually allotted into metabolic crates. While adapting to the crates, all the pigs were fed a basal diet based on corn-tapioca-soybean meal.
Soybean hulls used for this study were obtained from a local commercial soybean processor (CJ, Seoul). Wheat bran was also obtained from a local feed mill.
데이터처리
One-way analysis of variance (ANOVA) was carried out on all the data using the General Linear Models (GLM) procedure of Statistical Analysis System (SAS, 1998). Significance between means was tested by Tukey’s (Steel and Torrie, 1980).
이론/모형
Digestibility, apparent digestible- and metabolizable energy contents of the soybean hulls were measured by a method (by difference) as described by Scott et al. (1982) and Pond et al. (1995). Seven castrated male, crossbred (LandracexYorkshirexDuroc) pigs with an average of 56 kg body weight were individually allotted into metabolic crates.
The sulfur containing amino acids were oxidized with performic acid overnight according to the AOAC (1990). Urease activity was measured by a titration method with phenol red as an indicator (AOCS, 1976).
성능/효과
Proximate analyses, minerals, and amino acid compositions of the soybean hulls and the wheat bran were as shown in Table 1. CP level of the soybean hulls was slightly lower than that of wheat bran by 11.1% vs. 15.4%. However, the soybean hulls contained higher levels of CF (32.
Amino acid contents of the soybean hulls and wheat bran were as shown in Table 2. Lysine was the only essential amino acid for the soybean hulls to have more than in wheat bran by 0.66% to 0.54%. Contents of total sulfurcontaining amino acids (TSAA) of the hulls and the bran were 0.
Soybean hulls contained 2,420 kcal digestible energy (DE) and 2,370 kcal nitrogen-corrected apparent metabolizable energy (AMEn) per kg diet as shown in Table 1. Digestibility of the dry matter, CP, and CF of the hulls were 71.1%, 50.3% and 73.8%, respectively. The energy values and digestibility of the wheat bran were not measured in this study.
In test 1, the average intakes of the soybean hulls diet and the wheat bran diet were of the same range, 0.92 vs. 0.93 kg per day, respectively. The same trend was also observed in test 2, in which the average body weight was similar to that in test 1.
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