摘要：Simulated signal, produced by digital to analog converter, is important and necessary in many fields, such as electronic experiment, equipment debugging and maintenance, especially, in medical area. In this paper, the design and application of an effective software which may be used to generate simulated signal data by special wave picture obtained by scanner or drawing software are presented. First, we introduce how to realize producing needed data that meet the given conditions including amplitude, samples and resolution by this software. Second, the method and steps of getting the stimulated signal data from wave figure file is given. Third, an example of application about this software to generate simulated physiological signal data is shown. Then, the data are put into use and by digital to analog converter, an idea stimulated signal is produced. Therefore, with full confidence, we could draw a conclusion that it is very convenient and effective to get needed data for digital to analog conversion to generate all kinds simulated signal with a novel method.

摘要：Urine analysis is one of the most common and useful assay means in clinic for diagnose disease, especially urinary system disease and dry chemistry method is the most convenient, common and low cost about urine analysis. To expediently and efficiently analyze the corresponding relationships between different color data and semi-quantitative results about every urine item with dry chemistry way, in this paper, the design and application of effective software that may be used to collect color data about urine reagent strips are presented. First, we introduce the design procedure of this software. Second, its realization of design is given. Third, several application examples about collecting RGB original data by RS232 interface are shown. Then, RGB original data can be visually displayed by waveforms or curves and the data of cursor position may also be given. From the examples, we could confidently draw a conclusion that it is very convenient and effective to study on the laws of color variation about reagent pieces on reagent strip and it has met our original designed demands.

摘要：文章介绍了液态饲喂系统的发展历史,分析了液态饲喂系统的优点和存在的不足,提出了液态饲喂设备设计制造时应注意的一些具体事项,并简单综述了液态饲喂在养猪生产中的应用效果。

摘要：为探究饲料中添加超微粉碎铁观音对育肥猪的影响,本试验选择品种、胎次和日龄相近的36头体重为(67.76±1.77)kg的杜×长×大(Duroc×Landrace×large white)三元生长育肥猪,按完全随机设计法分为3组,每组12个重复,每个重复1头猪,饲喂61 d后屠宰。对照组饲喂基础日粮,试验A组饲喂基础日粮+0.15%超微粉碎铁观音,试验B组饲喂基础日粮+0.30%超微粉碎铁观音。结果表明:试验组与对照组相比,育肥猪的生长性能、背膘厚度、滴水损失有所降低(P>0.05),屠宰率、肉色、大理石纹、抗氧化性能有所提高(P>0.05)。因此,育肥猪饲料中添加0.15%和0.30%的超微粉碎铁观音会降低育肥猪的生长性能,但可提高育肥猪的肉品品质和抗氧化性能。

摘要：为探究饲料中添加松针粉对生长猪生长性能及免疫功能的影响,选择品种、胎次相近,平均体重为(60.92±0.46)kg的杜×长×大(Duroc×Landrace×large white)三元杂交猪108头,按完全随机设计法分为3组,每组6个重复,每个重复6头猪,试验周期41 d。对照组饲喂基础日粮,试验A组饲喂基础日粮+2%松针粉(等量替代麸皮),试验B组饲喂基础日粮+2%松针粉(直接添加)。结果表明:与对照组相比,试验A组的日增重提高2.88%,采食量提高1.94%,料肉比降低3.91%(P > 0.05);试验组B日增重降低3.43%,采食量降低3.91%,料肉比降低 0.53%(P > 0.05);试验A组与B组的咳嗽率均有所降低,分别降低64.22%和53.43%(P > 0.05);试验A组与B组血清中免疫球蛋白IgG和IgM含量较高,但三个试验组之间差异不显著。因此,在饲料中用2%松针粉等量替代麸皮或直接添加2%松针粉均有提高猪只生长性能、降低咳嗽率、提高免疫功能的趋势(P > 0.05)。

摘要：虎杖含有蒽醌类化合物和黄酮类多种活性成分,具有抗菌、抗氧化、降血脂等作用。本试验研究饲料中添加0、80 g/t虎杖对保育猪生长性能、腹泻率及免疫力的影响,以评估其对保育猪的作用。选择品种、胎次和日龄相近的40头(10.53±0.69)kg的杜长大三元保育猪,按完全随机设计法分为2组,分别为对照组和试验组,每组4个重复,每重复5头猪,饲养30 d。对照组饲喂基础日粮,试验组饲喂基础日粮+80 g/t虎杖。结果表明:与对照组相比,试验组(80 g/t)的平均日增重提高了8.35%,平均日采食量提高了9.43%,料肉比降低了0.60%(P>0.05);腹泻率有所降低(P>0.05);血液中白细胞(P>0.05)、红细胞的数量较低(P<0.05);这说明饲料中添加80 g/t的虎杖可提高保育猪的生长性能,降低保育猪的腹泻率,提高保育猪的免疫力。

摘要：为探究仔猪饲料中添加脱脂黄粉虫的可行性,选择品种、胎次相近的90头37日龄、平均体重为(12.34±0.25)kg的杜×长×大(Duroc×Landrace×large white)三元杂交仔猪,按完全随机设计法分为3组,对照A组(基础日粮)、试验B组(12.5 kg/t脱脂黄粉虫直接替代等量鱼粉)和试验C组(12.5 kg/t脱脂黄粉虫,配方计算),每组6个重复,每个重复5头猪,试验周期26 d。结果表明:与对照A组相比,试验B组的日增重提高9.2%(P 0.05),料肉比降低3.14%(P> 0.05);试验C组与对照A组无显著差异;三个试验组的血清生化及免疫指标数据差异不显著;与对照A组相比,试验B组增重成本每千克降低0.26元,试验C组比对照组增重成本每千克降低0.05元。因此,保育猪料中可以用脱脂黄粉虫替代鱼粉,同时还可降低猪只增重成本,增加养殖场经济效益;饲料中添加12.5 kg/t脱脂黄粉虫不影响猪只的免疫功能。

摘要：为探究饲料中添加苹果渣对育肥猪生长性能及经济效益的影响,选择品种、胎次相近、平均体重为(90.57±1.01)kg的杜-长-大(Duroc×Landrace×large white)三元杂交猪18栏,按完全随机设计法分为3组,每组6个重复,每个重复5头猪,周期35 d。对照组饲喂基础日粮,试验A组饲喂基础日粮+2.5%苹果渣(等量替代麸皮),试验B组饲喂基础日粮+5.0%苹果渣(等量替代麸皮)。结果表明:与对照组相比,试验A组的日增重数据与之相近,采食量、料肉比略有所增加(P> 0.05);试验B组的日增重略微降低,采食量、料肉比有所增加(P> 0.05),且随着添加量的增加,日增重有逐渐降低的趋势,采食量、料肉比有逐渐增加的趋势;试验A组与B组的头均增重均较低,单位增重成本略高。因此,育肥猪饲料中用苹果渣替代2.5%、5.0%的麸皮是可行的,且不影响饲料的适口性,能降低头均增重。但目前苹果渣的价格较高,直接替代麸皮使用经济效益一般,可在价格较低时选择添加使用。

摘要：为探究饲料中添加乳酸菌素对母猪及哺乳仔猪的影响,试验选择健康状况良好、预产期相近、胎次相近(3~6胎)的20头母猪,按完全随机设计法分为对照组和试验组,每组10个重复,每个重复1头母猪,试验期54 d。对照组饲喂基础日粮,试验组饲喂基础日粮+0.25 g/kg的乳酸菌素。结果表明:与对照组相比,试验组母猪在重胎期及哺乳期的采食量均较高(P>0.05);试验组母猪的窝产仔数、窝产活仔数、窝产健仔数、初生总窝重、健仔重及母乳中的免疫球蛋白含量有所增加(P>0.05);母猪日粮中添加0.25 g/kg的乳酸菌素不影响母猪粪便中的微生物(乳酸菌、大肠杆菌及产气荚膜梭菌)、断奶后的发情情况及哺乳仔猪粪便中的免疫球蛋白含量。因此,哺乳母猪料中添加0.25 g/kg乳酸菌素可提高重胎期和哺乳期母猪的采食量,改善母猪的产仔情况,提高母猪乳汁中的免疫球蛋白A(IgA)与免疫球蛋白G(IgG)的含量,降低仔猪的死胎率、弱仔率及腹泻率。综上,哺乳母猪料中添加0.25 g/kg乳酸菌素可改善母猪的繁殖性能,提高哺乳仔猪的生长性能。