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Xu, Xiang,Li, Lv-mu,Li, Bin,Guo, Wen-jie,Ding, Xiao-ling,Xu, Fa-zhi Asian Australasian Association of Animal Productio 2017 Animal Bioscience Vol.30 No.10
Objective: This study investigated the effect of fermented biogas residue (FBR) of wheat on the performance, serum biochemical parameters, and meat quality in pigs. Methods: We selected 128 pigs (the mean initial body weight was $40.24{\pm}3.08kg$) and randomly allocated them to 4 groups (1 control group and 3 treatment groups) with 4 replicates per group and 8 pigs per pen in a randomized complete block design based on initial body weight and sex. The control group received a corn-soybean meal-based diet, the treatment group fed diets containing 5%, 10%, and 15% FBR, respectively (abbreviated as FBR5, FBR10, and FBR15, respectively). Every group received equivalent-energy and nitrogen diets. The test lasted 60 days and was divided into early and late stages. Blood and carcass samples were obtained on 60 d. Meat quality was collected from two pigs per pen. Results: During the late stage, the average daily feed intake and average daily gain of the treatment groups was greater than that of the control group (p<0.05). During the entire experiment, the average daily gain of the treatment groups was higher than that of the control group (p<0.05). Fermented biomass residue did not significantly affect serum biochemical parameters or meat quality, but did affect amino acid profiles in pork. The contents of Asp, Arg, Tyr, Phe, Leu, Thr, Ser, Lys, Pro, Ala, essential amino acids, non-essential amino acids, and total amino acids in pork of FBR5 and FBR10 were greater than those of the control group (p<0.05). Conclusion: These combined results suggest that feeding FBR could increase the average daily gain and average daily feed intake in pigs and the content of several flavor-promoting amino acids.
Mitra Ghergherehchi,Xiang-Jie Mu,채종서,김윤상 한국물리학회 2013 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.63 No.9
Makrofol DE1-4C detectors were exposed to fission fragments and alpha particles (of energy 0.5 -3 MeV) from a 252Cf source in a vacuum chamber. The exposed detectors were etched in 6-N NaOHsolution at 70 C to measure etch induction times. An optical microscope was used to investigatevarious charged particle tracks and diameters in Makrofol detectors. The etch induction times foralpha-particle and fission-fragment tracks were obtained from the intersections of extrapolations ofa graph of track diameters with time. The obtained results will be very useful in nuclear trackstudies, as well as nanotechnology fields.
Hao Fang,Chen Zhao,Xiang-Yang Song,Mu Chen,Zheng Chang,Jie Chu 한국생물공학회 2013 Biotechnology and Bioprocess Engineering Vol.18 No.2
Two improvement approaches comprising of a mixed culture of Trichoderma reesei and Aspergillus niger and the addition of surfactants were employed in this study in order to enhance cellulolytic enzyme production as well as to improve the composition. Different delay times of A. niger inoculation (0, 24, and 48 h) and inoculum ratios of T. reesei versus A. niger (1:1 and 5:1) derived six mixed culture forms, which were 0 h/1:1, 0 h/5:1, 24 h/1:1, 24 h/5:1,48 h/1:1, and 48 h/5:1. It was found that the form 48 h/5:1allowed the highest FPA, 3.30 ± 0.34 IU/mL, and a relatively high BGA, 1.01 ± 0.25 IU/mL, thereafter being selected for the subsequent improvement step addition of surfactants. Among the three surfactants, including Triton X-100, CHAPS and sodium taurocholate, the third one was found to be the best one giving rise to the highest FPA and BGA, 5.02 ± 0.40 and 1.48 ± 0.28 IU/mL, respectively. Differently sourced cellulases were compared in the enzymatic hydrolysis of steam-exploded corn stover (SECS). Moreover, the cellulase produced by the mixed culture form 48 h/5:1 using SECS as a substrate showed the highest yield at 80.93 ± 2.04%, indicating that the composition of this cellulase was improved by the mixed culture of T. reesei and A. niger. The results validate that these two improvement approaches are efficient and applicable in cellulase production.