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Preservative effects of the combined treatment of slightly acidic electrolyzed water and ice on pomfret

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International Journal of Agricultural and Biological Engineering 2021年第1期14卷 230-236页

作者： Xiaoling Huang Songming Zhu Xiaomin Zhou Jinsong He Yong Yu zhangying ye College of Biosystems Engineering and Food Science Zhejiang UniversityHangzhou 310058China Ocean Academy Zhejiang UniversityZhoushan 316000ZhejiangChina Industrial Enterprise Research Institute of Marine Food Deep Processing Zhoushan 316101ZhejiangChina College of Food Science and Technology Yunnan Agricultural UniversityKunming 650201China

This study assessed the combined effect of slightly acidic electrolyzed water(SAEW)and slightly acidic electrolyzed water ice(SAEW-ice)on the quality of pomfrets over a period of 18 d of cold storage at 4°C.A presoak for 5 min in SAEW solution(22 mg/L)was used before the pomfrets were placed on SAEW-ice(pH:6.45;ORP:803 mV;ACC:18 mg/L);The changes in physicochemical properties(i.e.,pH,thiobarbituric acid,total volatile basic nitrogen and texture profile),microbial loads and sensory characteristics were all *** with the tap water(TW)group,the total bacterial counts of the SAEW group significantly decreased by 1.27 log10 CFU/g after immersion(p<0.05).The shelf life of the pomfrets was prolonged by 9 d by the combined treatment of SAEW and SAEW-ice during storage at 4℃.On the 18th day,the gumminess and chewiness values of the pomfrets in the SAEW+SAEW-ice group were 195 g and 3.97 mJ,respectively,which were significantly higher than those of the other groups(p<0.05).The results suggested that SAEW+SAEW-ice treatments have great potential as a novel method to maintain the quality and extend the shelf life of pomfrets during refrigerated storage.

关键词： pomfret slightly acidic electrolyzed water slightly acidic electrolyzed water ice storage quality preservation

Disinfection effect of adding slightly acidic electrolyzed water to artificial seawater under the condition of static hybrid

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International Journal of Agricultural and Biological Engineering 2020年第2期13卷 218-222页

作者： Chunfang Wang Xiaoling Huang Shuo Wang Yong Yu Songming Zhu zhangying ye College of Biosystems Engineering and Food Science Zhejiang UniversityHangzhou 310058China Research Center for Agricultural Products Preservation and Processing Shanghai Academy of Agricultural SciencesShanghai 201403China Ocean Academy Zhejiang UniversityZhoushan 316000China

Mixed solution of slightly acidic electrolyzed water(SAEW)and artificial seawater was used to investigate the disinfection potential of SAEW in artificial *** Vibrio parahaemolyticus(suspended in 3%sodium chloride alkaline peptone water and 0.85%sodium chloride water,respectively)was subjected to different mixed-SAEW and SAEW immersion treatments(5-20 mg/L available chlorine concentration(ACC)).In the presence of organic matter,4.07 logCFU/mL significant reduction(p<0.05)was achieved after treating with 20 mg/L mixed-SAEW for 15 *** was 5.13 logCFU/mL reduction after treating with 15 mg/L SAEW for 15 *** *** suspended in 0.85%sodium chloride solution,it was undetected after 30 s SAEW treatment(5 mg/L ACC)or 120 s mixed-SAEW treatment(10 mg/L ACC).At a ratio of SAEW and artificial seawater at 1:15(V/V),SAEW could inactivate *** to undetectable level in artificial seawater in one minute,which was comparable with UV treatment of 10 *** results indicated high sanitization potential of SAEW against *** in aquaculture seawater.

关键词： slightly acidic electrolyzed water disinfection inactivation Vibrio parahaemolyticus artificial seawater ultraviolet

Evaluation of dynamic effects of dietary medium-chain monoglycerides on performance,intestinal development and gut microbiota of broilers in large-scale production

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Animal Nutrition 2023年第3期14卷 269-280页

作者： Tao Liu Shengyue Ruan Qiufen Mo Minjie Zhao Jing Wang zhangying ye Li Chen Fengqin Feng College of Biosystems Engineering and Food Science Zhejiang UniversityHangzhou 310058China The Institute of Animal Husbandry and Veterinary Science Zhejiang Academy of Agricultural SciencesHangzhou 310021China Ningbo Research Institute Zhejiang UniversityNingbo 315000China Hangzhou Longyu Biotechnology Co. LtdHangzhou 310003China

Medium-chain monoglycerides(MG)have been reported to affect the productive performance,gut microbiota and health of broiler chickens reared in ideal experimental conditions at home and ***,the effects of MG on performance,intestinal development and gut microbiota of chickens in large-scale farms during different feed stages remain *** present study was conducted on a modern farm with a total of 12,000 yellow feathered broiler chicks that were randomly allotted to 2groups(1000 chicks/replicate,6 replicates/group)for a 70-day *** control group(CON group)received a basal diet,and the treated group(MG group)was fed a basal diet containing 300 mg/kg mixed *** results revealed that dietary MG significantly(P<0.05)increased the body weight and average feed intake,but notably reduced the feed conversion and mortality of chickens in large-scale production during the starter *** villus height of the duodenum in the MG group at 1,2 and 7 wk of age increased notably,and the villus height to crypt depth ratio at 1,2,5 and 10 wk of age was *** MG decreased the serum insulin content of chickens at 5,7 and 10 wk of age,and decreased the serum lipopolysaccharide at 3 and 7 wk of *** triglyceride level of chickens at 3,5 and 10 wk of age and the low-density lipoprotein cholesterol level of chickens at 7 and 10 wk of age in the MG group decreased notably,while the high-density lipoprotein cholesterol increased ***,MG supplementation selectively increased the relative abundance of genus Bacteroides(family Bacteroidaceae)and Lachnospiraceae_NK4A136_group,but decreased the content of genus Rikenellaceae_RC9_gut_group,Collinsella and family Barnesiellaceae in the cecum of chickens at 3,7 and 10 wk of ***,these findings showed that dietary MG notably enhanced chicken performance,health and feed nutrient utilization at early ages by regulating gut microbiota,intestinal development and serum biochemical indice

关键词： Medium-chain monoglycerides Broiler chickens Dynamic effect Gut microbiota Fat deposition

Effects of lighting mode on the growth performance,cortisol level and oxidative stress of juvenile Chinese three-keeled pond turtle(Chinemys Reevesii)

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International Journal of Agricultural and Biological Engineering 2023年第4期16卷 58-62页

作者： Haijun Li Jianlin Guo Jian Zhao zhangying ye Mingdong Ji Songming Zhu College of Biosystems Engineering and Food Science Zhejiang UniversityHangzhou 310058China、Key Laboratory of Equipment and Informatization in Environment Controlled AgricultureMinistry of Agriculture and Rural AffairsChina Key Laboratory of Healthy Freshwater Aquaculture Ministry of Agriculture and Rural Affairs、Key Laboratory of Fish Health and Nutrition of Zhejiang Province、Zhejiang Institute of Freshwater FisheriesHuzhou 313001ZhejiangChina Ocean Research Institute Zhejiang UniversityZhoushan 316021ZhejiangChina School of Engineering Huzhou UniversityHuzhou 313000ZhejiangChina

To improve the light environment and welfare of the turtle cultured indoors,the effects of lighting mode on growth performance,cortisol level,and oxidative stress of juvenile Chinese three-keeled pond turtle,Chinemys reevesii,were investigated in this *** experimental turtles with an initial weight of 5.61±0.09 g were reared in tanks under four different lighting modes:three groups with light(lighting the basking area and water area,LBW;lighting the water area only,LW;lighting the basking area only,LB)and control group(no light,NL).The experiment was conducted for more than six months,with each group having three *** 203 d of the experiment,the turtle in the LW group exhibited higher weight gain rate(WGR)and a specific growth rate(SGR,%/d)compared to other ***,results showed that the final body weight of the turtle exposed to LW was higher than that exposed to other *** the physiological level,serum cortisol level in turtles exposed to LW was significantly lower than that in other *** oxidative stress,the level of catalase(CAT)in turtles exposed to LW and LB was significantly lower than that exposed to LBW and *** malonaldehyde(MDA)activity in turtles exposed to LW was significantly lower than other *** on the growth performance and health status,it is suggested that lighting the water area only is the optimal lighting mode for the juvenile threekeeled pond turtle cultured indoors.

关键词： Chinese three-keeled pond turtle lighting mode growth stress response oxidative stress

Light spectrum preference of Nile Tilapia (Oreochromis niloticus) under different hunger levels

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International Journal of Agricultural and Biological Engineering 2019年第5期12卷 51-57页

作者： Guang Jin Jian Zhao Yadong Zhang Gang Liu Dezhao Liu Songming Zhu Yufang Shao zhangying ye College of Biosystems Engineering and Food Science Zhejiang UniversityHangzhou 310058China

In order to improve the light welfare of Nile tilapia in aquaculture,the influence of hunger level on light spectrum preference of Nile tilapia was explored in this *** whole experiment was based on the emptying of the gastrointestinal contents,and carried out under the controlled laboratory *** light spectrum preference was assessed by counting the head location of fish in each experimental tank,which containing seven compartments(i.e.,red,blue,white,yellow,black,green and public area).t-Distributed Stochastic Neighbor Embedding(t-SNE)was adopted to visualize the hunger level-based dynamic preference on light spectrum in two-dimensional *** to the clustering results,significant differences in light spectrum preferences of Nile tilapia,under the different hunger levels,were *** addition,the average visit frequency in green compartment was significantly lower than that in other color compartments throughout the whole experiment,and the total visit frequency in red compartment was relatively higher during the whole experiment.

关键词： light welfare Nile tilapia hunger level light spectrum preference t-Distributed Stochastic Neighbor Embedding

Effects of intelligent feedingmethod on the growth,immunity and stress of juvenile Micropterus salmoides

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Artificial Intelligence in Agriculture 2021年第1期5卷 118-124页

作者： Dan Wei Fengdeng Zhang zhangying ye Songming Zhu Daxiong Ji Jian Zhao Fan Zhou Xueyan Ding College of Biosystems Engineering and Food Science Zhejiang UniversityHangzhou 310000China Ocean Academy Zhejiang UniversityZhoushan 316000China Zhejiang Fisheries Technical Extension Center Hangzhou 310023China

The feeding method is of great significance for aquaculture production and *** recent years,research on intelligent feeding,a method based on fish appetite,has been ***,however,have focused on fish welfare issues that can result from intelligent *** this study,an adaptive feeder based on a practical intelligent feeding method was designed to evaluate whether this intelligent feeding method would impair fish welfare compared to traditional automatic *** results indicated that the amount of residual feed and size inhomogeneity in the traditional group was significantly higher than that in the intelligent *** results of the growth indicator showed that theweight gain rate(WGR)in the intelligent feeding groupwas significantly higher(30.17%)than in the traditional feeding *** no significant differences were observed in the survival rate(SR),the condition factor(CF)and the hepatosomatic index(HSI),the specific growth rate(SGR)in the intelligent feeding group was significantly increased by 8.33%while the feed conversion rate(FCR)was reduced by a remarkable 17.07%compared to the traditional feeding ***,intelligent feeding significantly improved the pepsin activity of the *** terms of immunity and antioxidant capacity,however,the fish in the intelligent feeding group had a significantly lower lysozyme(LZM)level than those fed with the traditional *** superoxide dismutase(SOD),the intelligent group also displayed a lower activity value,although it was not *** intelligent feeding group had 0.14 nmol/mg protein higher malondialdehyde(MDA)activity than the traditional *** stress,although no statistical significance was observed,the cortisol level in the intelligent group was 1.9 ng/ml higher than in the traditional ***,these data suggested that the intelligent feeding method can significantly improve fish growth but may also result in stress and suppress innate immunity.

关键词： Intelligent feeding method Fish welfare Growth Immunity Stress

Effects of flow velocity on water quality and ammonia excretion in recirculating aquaculture system culturing juvenile largemouth bass(Micropterus salmoides)

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International Journal of Agricultural and Biological Engineering 2022年第5期15卷 213-218页

作者： Runguo Xiao Ganxiang Wang Zhenlei Chen zhangying ye Songming Zhu Xueyan Ding Fan Zhou Jianlin Guo Jian Zhao College of Biosystems Engineering and Food Science Zhejiang UniversityHangzhou 310058China Pinghu Fisheries Technology Promotion Center Jiaxing 314200ZhejiangChina Ocean Academy Zhejiang UniversityZhoushan 316000ZhejiangChina Zhejiang Fisheries Technical Extension Center Hangzhou 310023China Key Laboratory of Healthy Freshwater Aquaculture Ministry of Agriculture and Rural AffairsKey Laboratory of Fish Health and Nutrition of Zhejiang Province/Zhejiang Institute of Freshwater FisheriesHuzhou 313001Zhejang Chna

Flow velocity plays an important role in recirculating aquaculture systems(RAS)and the growing practice of culturing juvenile largemouth bass(Micropterus salmoides).In this study,the effects of flow velocity on the water quality as well as the ammonia excretion were discussed from the perspective of actual production,and a polynomial model of ammonia nitrogen excretion was established,using the juvenile largemouth *** showed that the range of ammonia nitrogen and nitrite nitrogen decreased with flow velocity increasing,while the number and volume share of large particles *** to the polynomial model,compared with the medium flow velocity(11 cm/s,2.45 body length(bl)/s),the ammonia excretion of juvenile largemouth bass at high(18 cm/s,4.00 bl/s),and low(4 cm/s,0.90 bl/s)flow velocity changed faster with time,and the excretion rate peaked at the 6th hour after feeding,earlier than that under medium flow ***,it is suggested to increase the flow velocity at the 5th hour after feeding and then decreased it at the 10th hour,to ensure better water quality in RAS culturing juvenile largemouth bass.

关键词： flow velocity recirculating aquaculture system juvenile largemouth bass water quality ammonia excretion

Recent advances in application of moving bed bioreactors for wastewater treatment from recirculating aquaculture systems: A review

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Aquaculture and Fisheries 2022年第3期7卷 244-258页

作者： Abubakar Shitu Gang Liu Aliyu Idris Muhammad Yadong Zhang Musa Abubakar Tadda Wanhe Qi Dezhao Liu zhangying ye Songming Zhu Institute of Agricultural Bio-Environmental Engineering College of Bio-systems Engineering and Food ScienceZhejiang UniversityHangzhou310058China Key Laboratory of Equipment and Informatization in Environment Controlled Agriculture Ministry of AgricultureHangzhou310058China Department of Agricultural and Environmental Engineering Faculty of EngineeringBayero UniversityKanoNigeria

In recent years,government investments in implementing restrictive public policies on the treatment and discharge of effluents from the aquaculture industry have ***,efficient and cleaner methods for aquaculture production are *** aquaculture systems(RAS)offers water conservation by recycling the treated aquaculture water for *** wastewater treatment using a moving bed bioreactors(MBBRs)process has been considered well suited for maintaining good water quality,thereby making fish farming more ***,improvements were achieved in tackling the influence of salinity,organic matter,disinfectant,and bioreactor start-up process on the MBBR performance *** review highlights an updated overview of recent development made using MBBR to treat the residual water from ***,nitrification and simultaneous nitrification-denitrification(SND),and other hybrid processes for nitrogen removal were ***,future challenges and prospects of MBBRs in RAS facilities that need to be considered were also proposed.

关键词： Ammonia removal Biofilm carriers Sustainability Salinity Nitrogenous compound Accelerated start-up

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肉鸡密闭养殖箱的氨气排放检测方法

农业工程学报 2015年第22期31卷 235-239页

作者：介邓飞魏萱叶章颖泮进明华中农业大学工学院武汉430070 浙江大学生物系统工程与食品科学学院杭州310058 福建农林大学机电工程学院福州350002

准确获取肉鸡养殖过程中氨气(NH3)排放规律及排放系数是评估其排放量的基础,并可为NH3减排提供依据。为了研究肉鸡模拟养殖环境条件下肉鸡质量、排泄量、采食量和饮水量等参数对NH3排放情况的影响,该文设计了由肉鸡养殖箱、气体采样管... 详细信息

准确获取肉鸡养殖过程中氨气(NH3)排放规律及排放系数是评估其排放量的基础,并可为NH3减排提供依据。为了研究肉鸡模拟养殖环境条件下肉鸡质量、排泄量、采食量和饮水量等参数对NH3排放情况的影响,该文设计了由肉鸡养殖箱、气体采样管路和红外光声谱气体监测仪构成的肉鸡养殖箱NH3浓度检测装置,对养殖箱的静态气密性、检测装置的性能和肉鸡短期养殖NH3排放情况进行了研究。研究结果表明:静态试验时,养殖箱内NH3质量浓度的平均变化率为-4.40%,气密性能良好;动态试验时,将质量浓度为37.95 mg/m3 NH3通入养殖箱,检测NH3质量浓度最大值36.75 mg/m3,最小值35.22 mg/m3,平均值为35.65 mg/m3,准确度达到93.94%,检测装置性能稳定,能够较精确检测到养殖箱内标准气体的质量浓度。肉鸡短期养殖试验结果表明:在非光照时期(22:00-次日06:00)养殖箱内NH3质量浓度大于光照时期(06:00-22:00)质量浓度;养殖前期肉鸡排泄量与NH3浓度变化趋势呈正相关,养殖后期排泄量与NH3浓度变化趋势呈负相关;箱内粪便累积到第4天,NH3质量浓度急剧上升。该检测装置为后期进一步研究肉鸡养殖生长过程中NH3排放特征提供了前期研究设施基础。

关键词：氨气排放养殖箱检测装置肉鸡污染气体