This study was conducted to evaluate the effects of feeding rye silage on growth performance, blood and carcass characteristics in finishing pigs. The total of eighteen($Landrace{\times}Yorkshire{\times}Duroc$) pigs($74.22{\pm}0.71kg$) were used for 49-day assay. Dietary treatments included 1) CON(basal diet), 2) S1(1.66% rye silage) and 3) S2(3.32% rye silage). In growth performance, from 4 to 7 weeks, average daily feed intake(ADFI) in pigs fed CON diet was higher than pigs fed S1 and S2 diets. Through the entire experimental period($0{\sim}7$ weeks), a ADFI in CON and S2 treatments was higher than S1 treatment (p<0.05). Serum cortisol concentration of pigs fed rye silage decreased significantly compared to pigs fed basal diet (p<0.05). The Hunter's $L^*$(lightness) value of loin in the pigs fed S2 diet was higher than that of loin in the pigs fed CON diet(p<0.05). The $b^*$(yellowness) value of loin in the pigs fed S1 and S2 diets were higher than CON treatment(p<0.05). Backfat thickness in CON treatment increased significantly compared to S1 and S2 treatments(p<0.05). Among fatty acid contents of lean meat, the contents of palmitic and stearic acids were significantly higher in CON than others(p<0.05), where as eicosenoic and linolenic acids were the highest in S2 treatment among treatments(p<0.05). Total SFA(saturated fatty acid) was the highest in CON(p<0.05) and S1 and S2 treatments were higher USFA/SFA(unsaturated fatty acid/saturated fatty acid) ratio than CON treatment. In fats, linolenic acid was higher in S2 treatment than those of S1 and CON treatments(p<0.05). Digestibility of dry matter in pigs fed S1 and S2 diets was greater than that of pigs fed CON diet(p<0.05) and S1 treatment was higher than others on digestibility of nitrogen(p<0.05). VFA(volatile fatty acid) emission from focal, measured after 1 day, increased significantly in pigs fed S1 and S2 diets(p<0.05). In conclusions, our results showed that feeding rye silage might be beneficial in decrease of cortisol concentration, hunter's $L^*$(lightness) value and $b^*$(yellowness), fatty acid contents, and nutrient digestibility. However, there should be more study on the relationship between feeding rye silagr and finishing pigs.
Circadian timing system plays a major role in a wide range of reproductive function. However it is plausible idea that other environmental and/or internal cue might be simultaneously participated in the optimal regulation of reproductive system. In the present study we extended the reverse feeding (RF) time regimen up to 8 weeks, then measured the general and reproductive indices of the animals. The animals of ad libitum feeding group (Control, CON) have free access to food for 4, 6 and 8 weeks, respectively. The day feeding animals (reverse feeding, RF group) have restricted access to food during daytime (09:00-18:00) for 4, 6 and 8 weeks, respectively. When the feeding schedules were over, key indices were measured. After 4 weeks and 8 weeks of feeding, body weights of animals were not significantly different. However, body weights of 6 weeks RF animals were significantly smaller than those of control animals (CON : RF = $333.46{\pm}12.71$ g : $289.91{\pm}8.31$ g, p<0.01). The blood glucose levels of 4 weeks RF animals were significantly decreased compared to the levels of control animals (CON : RF = $161.4{\pm}2.7$ mg/dL : $176.7{\pm}5$ mg/dL, p<0.01) while the levels of 6 weeks RF and 8 weeks RF animals were not different form those of control animals. Reproductive and non-reproductive tissue weights from 6 weeks RF group were significantly lowered than those from CON group (testis, CON : RF = $1.4714{\pm}0.0174$ g : $1.3724{\pm}0.0168$ g, p<0.001; epididymis, CON : RF = $0.3574{\pm}0.0059$ g : $0.3243{\pm}0.0068$ g, p<0.001; seminal vesicle, CON : RF = $0.1655{\pm}0.0068$ g : $0.1328{\pm}0.0054$ g, p<0.001; prostate, CON : RF = $0.3350{\pm}0.0231$ g : $0.2528{\pm}0.0143$ g, p<0.01). After 4 weeks and 8 weeks of reverse feeding, sperm counts in RF animals were markedly reduced than those in control animals[CON 4W : RF 4W = $121.17{\pm}9.96\;({\times}10^6)$ : $50.86{\pm}9\;({\times}10^6)$, p<0.001; CON 8W : RF 8W= $138.69{\pm}9.8\;({\times}10^6)$ : $108.94{\pm}4.22\;({\times}10^6)$, p<0.001]. Present study indicates that RF may induce an adaptable metabolic stress and cause impairment of androgen-dependent reproductive tissues. On-going longitudinal studies will allow a better understanding of the how does mealtime shift affect the reproductive function and exact nature of adaptation.
Journal of the Korean Applied Science and Technology
/
v.37
no.4
/
pp.778-785
/
2020
The purpose of this study was to investigate in vitro antibacterial activities of pozzolan against super bacteria and intestinal bacteria. There were four treatment groups: 1) CON, pozzolan free control group; 2) DP0.3, microbial culture medium prepared by mixing distilled water and 0.3% of pozzolan powder; 3) DP0.5, microbial culture medium prepared by mixing distilled water and 0.5% of pozzolan powder; and 4) PE, microbial culture medium prepared with pozzolan powder extracts without adding distilled water. The count of Lacctobacillus casei was significantly higher in the DP0.3 group compared to CON (P<0.05). However, it showed no significant difference compared to other treatment groups. Numbers of Clostridium butyricum, Escherichia coli, and Salmonella typhimurium were significantly lower in pozzolanic treatment groups compared to CON (P<0.05). Clostridium butyricum and Salmonella typhimurium counts were significantly different among DP0.3, DP0.5, and PE groups (P<0.05). Counts of E. coli were also significantly between DP0.5 and PE groups (P<0.05). Counts of MRSA and VRE were significantly lower in pozzolanic treatment groups compared to CON (P<0.05). MRSA counts were significantly different among DP0.5, DP0.3 and PE groups. VRE counts were significantly higher in the order of PE > DP0.3> DP0.5> CON (P<0.05). These results suggest that pozzolan could be used as a dietary silicate supplement and a natural antibacterial agent for livestock if its antimicrobial activity against super bacteria and harmful bacteria in the intestine is confirmed.
The aim of this study was to evaluate the effect of beekeeping by-products added to drinking water on the growth performance and intestinal and fecal microflora of Institute of Cancer Research (ICR) mice. A total of 72 five-week-old ICR mice with an initial body weight (BW) of 24.57 ± 0.60 g were used in a two-week experiment. The four treatment groups were as follows; 1) CON, normal distilled water; 2) T1, CON with 0.7% beehive extract; 3) T2, CON with 0.7% propolis (PRO); and 4) T3, CON with 0.7% royal jelly (RJ). Each treatment consisted of 6 replicate cages with 3 mice per cage. At 0 - 1 week, T3 showed a significantly higher (p < 0.05) body weight gain (BWG) and feed efficiency (G : F) than that of CON. Compared with CON, T2 showed a significantly higher (p < 0.05) BWG and feed intake at 1 - 2 weeks. During the entire period, T2 and T3 showed a significantly higher (p < 0.05) BWG and G : F compared to CON. The amount of Salmonella and Lactobacillus in the large intestine was significantly decreased and increased (p < 0.05) in T2 and T3, respectively, compared to CON. The amount of Escherichia coli in the fecal matter was significantly reduced (p < 0.05) compared to CON in all treatment groups to which beekeeping by-products were added. In conclusion, the addition of PRO or RJ to the drinking water of ICR mice had a positive effect on the growth performance and the intestinal and fecal microflora.
Bacillus-based feed additive was evaluated for its efficacy on growth performance, nutrient digestibility, fecal gas emission, and the consumption of time and amount of water for cleaning the pen of growing finishing pigs. A total of 120 growing pigs ($23.59{\pm}1.41kg$) were used in a 16-wk feeding trial. Pigs were randomly distributed into 1 of 2 treatments on the basis of body weight and sex. There were 12 replicate pens per treatment, with 5 pigs (3 barrows and 2 gilts) per pen. Dietary treatments were CON which was basal diet, and T1 which was CON+62.5 ppm microbial feed additive that provided $1.47{\times}10^8cfu$ of Bacillus organisms per gram of supplement. During the weeks 0 to 6, average daily gain (ADG) in T1 treatment was higher (p<0.05) than CON, but no improvement in average daily feed intake (ADFI) and feed efficiency (G:F) was noted. During 6 to 16 weeks, no difference (p>0.05) was noted in growth performance. However, ADG was improved (p<0.05) and overall ADFI tended (p = 0.06) to improve in T1 compared with CON. At week 6, the co-efficient of apparent total tract digestibility (CATTD) of dry matter (DM) nitrogen (N) was increased (p<0.05) in T1 compared with CON. Fecal $NH_3$ emission was decreased (p<0.05) in T1 compared with CON, at the end of 6th and 15th weeks. The time and water consumed for washing the pens were decreased (p<0.05) in T1 compared with CON. In conclusion, supplementation with Bacillus-based feed additive could improve the overall growth performances, increase the CATTD of DM and decrease the fecal $NH_3$ content and the time and water consumed in washing the pens for growing-finishing pigs.
A total of 528 broilers ($47{\pm}0.1g$; 1 day of age) were used in a 35-day feeding trial to evaluate probiotics, prebiotics and their interactive effects on growth performance, blood characteristics, relative organ weight and meat quality. Broilers were randomly distributed into 1 of 6 treatments on the basis of body weight (BW) (4 replicate pens per treatment, 22 broilers per pen). The dietary treatments were CON, basal diet; B, CON + 0.1 g kg-1 Bacillus subtilis; K, CON + 1 g kg-1 Kefir; G, CON + 1 g kg-1 ${\beta}-glucan$; GB, G + 1 g kg-1 Bacillus subtilis; and GK, G + 1 g kg-1 Kefir. The overall effects indicated that broilers fed the K, G and GK diets had greater body weight gain (BWG) than those fed the CON diet (P<0.05). The number of white blood cells increased (P<0.05) in the GB group compared with the CON, B and G treatments; however, the lymphocyte percentage in the B group was higher than in the G group. The weight of bursa fabricii was lower in the B and G groups compared to the K group (P<0.05), whereas a higher spleen weight was observed in chickens that were fed the GB and GK diets compared to the B group (P<0.05). The treatments did not affect the meat quality parameters, except for meat redness, which improved with all of the supplementation groups (P<0.05). The population of Lactobacillus spp. in gizzard was significantly higher in the K treatment compared with CON, B, G and GB. In conclusion, supplementation with kefir and ${\beta}-glucans$ improved growth performance.
Volatile organic compounds (VOCs) are increasingly been recognized as the chemical mediators of mold interactions, shaping their community dynamics, growth, and metabolism. Herein, we selectively examined the time-correlated (0 D-11 D, where D = incubation days) effects of intraspecies VOC-mediated interactions (VMI) on Aspergillus oryzae KCCM 60345 (S1), following co-cultivation with partner strain A. oryzae KACC 44967 (S2), in a specially designed twin plate assembly. The comparative evaluation of $S1_{VMI}$ (S1 subjected to VMI with S2) and its control ($S1_{Con}$) showed a notable disparity in their radial growth ($S1_{VMI}$ < $S1_{Con}$) at 5 D, protease activity ($S1_{VMI}$ > $S1_{Con}$) at 3-5 D, amylase activity ($S1_{VMI}$ < $S1_{Con}$) at 3-5 D, and antioxidant levels ($S1_{VMI}$ > $S1_{Con}$) at 3 D. Furthermore, we observed a distinct clustering pattern for gas chromatography-time of flight-mass spectrometry datasets from 5 D extracts of $S1_{VMI}$ and $S1_{Con}$ in principle component analysis (PC1: 30.85%; PC2: 10.31%) and partial least squares discriminant analysis (PLS-DA) (PLS1: 30.77; PLS2: 10.15%). Overall, 43 significantly discriminant metabolites were determined for engendering the metabolic variance based on the PLS-DA model (VIP > 0.7, p < 0.05). In general, a marked disparity in the relative abundance of amino acids ($S1_{VMI}$ > $S1_{Con}$) at 5 D, organic acids ($S1_{VMI}$ > $S1_{Con}$) at 5 D, and kojic acid ($S1_{VMI}$ < $S1_{Con}$) at 5-7 D were observed. Examining the headspace VOCs shared between S1 and S2 in the twin plate for 5 D incubated samples, we observed the relatively higher abundance of C-8 VOCs (1-octen-3-ol, (5Z)-octa-1,5-dien-3-ol, 3-octanone, 1-octen-3-ol acetate) having known semiochemical functions. The present study potentially illuminates the effects of VMI on commercially important A. oryzae's growth and biochemical phenotypes with subtle details of altered metabolomes.
This paper presents design of meter for estimation Committed Information Rate(CIR) in Differentiated Services(DiffServ) networks. The DiffServ is a target model rather than a specification that contains detailed information about the required implementation. DiffServ provides a moderate level of quality differentiation without strict guarantees[1]. A DiffServ router consists of different components including classifier, meter, marker, dropper, shaper and scheduler. In this paper, we use the benefits of the fuzzy logic controller to design a fuzzy based traffic conditioner for DiffServ[2]. Simulations show that the approach is efficient and promising.
An experiment was conducted to evaluate the effects of bacteriophage supplementation on egg performance, egg quality, excreta microflora, and moisture content in laying hens. A total of 288 Hy-line brown commercial laying hens (36-wk-old) were randomly allotted to 4 treatments in this 6-wk trial and dietary treatments included: i) CON, basal diet; ii) T1, CON+0.020% bacteriophage; iii) T2, CON+0.035% bacteriophage; iv) T3, CON+0.050% bacteriophage. There were 6 replicates for each treatment with 6 adjacent cages (2 hens/cage). Laying hens in T2 and T3 treatments had higher (p<0.05) egg production than those in CON and T1 treatments during wk 0 to 3. In addition, egg production in T1, T2, and T3 treatments was increased (p<0.05) compared with that in CON treatment during wk 4 to 6. At wk 4 and 5, birds in T2 group had higher (p<0.05) HU than those in CON. In addition, at wk 5 and 6, HU in birds fed T1 and T3 diets was greater (p<0.05) than those fed CON diet. E. coli and Salmonella spp. concentrations in excreta were decreased (p<0.05) by T1, T2, and T3 treatments. However, egg weight, egg shell color, yolk height, yolk color unit, egg shell strength, egg shell thickness, egg gravity, and excreta moisture content were not influenced by dietary treatments during the entire experimental period. In conclusion, bacteriophage supplementation has beneficial effects on egg production, egg albumen, and excreta microflora concentration in laying hens.
This study was conducted to investigate the effects of group-housing facility (GHF), compared to an individual confinement stall (CON), on the reproductive performance, behavior, and stress hormones of gestating sows. A total of 50 primiparous sows (Landrace × Yorkshire) were randomly allocated into either CON (n = 25) or GHF (n = 25) during the gestation period. One week before parturition, the sows were transferred into conventional farrowing crates, and cross-fostering was conducted within 1 d of delivery. Blood was collected for analyses of stress indices at 75 d of gestation and postpartum. Reproductive performance was estimated during the period of birth to weaning. Behavior patterns were identified at 90 d of gestation. Litter size was not different between the CON and GHF treatments. Weaning to estrus interval, however, tended to be lower in the GHF than in the CON (p < 0.1). Activity, treating, belly nosing, and exploring behaviors were observed only in the GHF group, whereas rubbing was shown only with the CON. Serum cortisol concentration was lower in the GHF than in the CON at 75 d of gestation (p < 0.05). Sows housed in the GHF showed lower epinephrine and norepinephrine concentrations than those housed in the CON at postpartum (p < 0.05). The GHF sows demonstrated more natural behavior characteristics associated with stress relief than the CON sows with no adverse effects on reproductive performance. Therefore, these results suggest that GHF could be applied as an alternative housing facility to improve animal welfare on swine farms.
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