喹烯酮预混剂对肉鸡的增重试验

本文研究了喹烯酮预混剂对肉鸡生产性能的影响。选用150羽7日龄肉仔鸡,随机分为3组,每组3个重复。对照空白组饲喂基础日粮,喹乙醇对照组饲喂添加75ppm的喹乙醇预混剂基础日粮,试验组饲喂添加75ppm的喹烯酮预混剂基础日粮,试验期35d。结果:实验组肉鸡的末期平均体重、净增重和日增重均高于空白对照组和喹乙醇组,差异显著(P<0.05);试验组的平均采食量均高于两对照组(P>0.05);试验组的饲料转化率较空白对照组提高了3.69%(P<0.05),比喹乙醇组高1.5%(P>0.05)。结果表明在较高的营养水平条件下喹烯酮对肉鸡有良好的的促生长作用。     

喹烯酮预混剂对肉鸡的增重试验

研究了喹烯酮预混剂对肉鸡生产性能的影响。选用150羽7日龄肉仔鸡,随机分为3组,每组3个重复。对照空白组饲喂基础日粮,喹乙醇对照组饲喂添加75×10^4的喹乙醇预混剂基础日粮,试验组饲喂添加75×10^4的喹烯酮预混剂基础日粮,试验期35d。结果：实验组肉鸡的末期平均体重、净增重和日增重均高于空白对照组和喹乙醇组,差异显著（P〈0.05）,试验组的平均采食量均高于两对照组（P〉0.05）。试验组的饲料转化率较空白对照组提高了3．69％（P〈0．05）,比喹乙醇组高1．5％（P〉0.05）。结果表明在较高的营养水平条件下喹烯酮对肉鸡有良好的的促生长作用。     

喹烯酮对肉鸡生长性能的研究

选用150羽7日龄肉仔鸡,随机分为3组,每组3个重复.对照空白组饲喂基础日粮,喹乙醇对照组饲喂添加75×10-6的喹乙醇基础日粮,试验组饲喂添加75×10-6的喹烯酮基础日粮,试验期35 d.结果:实验组肉鸡的末期平均体重、净增重和日增重均高于空白对照组和喹乙醇组,差异显著(P<0.05),试验组的平均采食量均高于两对照组(P>0.05).试验组的饲料转化率较空白对照组提高了3.69%(P<0.05),比喹乙醇组高1.5%(P>0.05).结果表明在较高的营养水平条件下喹烯酮对内鸡有良好的的促生长作用.     

喹烯酮预混剂对肉鸡的增重试验

本文研究了喹烯酮预混剂对肉鸡生产性能的影响。选用150羽7日龄肉仔鸡,随机分为3组,每组3个重复。对照空白组饲喂基础日粮,喹乙醇对照组饲喂添加75ppm的喹乙醇预混剂基础日粮,试验组饲喂添加75ppm的喹烯酮预混剂基础日粮,试验期35d。结果：实验组肉鸡的末期平均体重、净增重和日增重均高于空白对照组和喹乙醇组,差异显著（P〈0．05）;试验组的平均采食量均高于两对照组（P〉0．05）;试验组的饲料转化率较空白对照组提高了3．69％（P〈0．05）,比喹乙醇组高1．5％（P〉0．05）。结果表明在较高的营养水平条件下喹烯酮对肉鸡有良好的的促生长作用。     

牛至油对肉仔鸡生长性能和胴体品质的影响

将150只1日龄、健康的艾维茵肉仔鸡随机分为5组,在其基础日粮中分别添加75、100、125、150 mg/kg的10%牛至油预混剂,饲喂6周.结果表明,牛至油可极显著提高肉仔鸡全期的增重速度(P＜0.01),改善料肉比(P＜0.01);试验组平均胸肌率和腿肌率显著高于对照组(P＜0.05),分别比对照组高8.93%、9.60%,试验组平均腹脂率比对照组平均低16.30%,差异极显著(P＜0.01).以生产性能和胴体品质为指标看,牛至油在肉仔鸡日粮中的适宜添加量为100 mg/kg.     

肌醇对肉兔血清生化指标的影响研究

试验旨在研究饲粮肌醇添加水平对肉兔血清生化指标的影响。选择30日龄体重相近的健康肉兔160只,随机分为4组,按照单因素设计开展饲养试验。对照组饲喂基础日粮,试验组在饲喂基础日粮的基础上分别添加25 mg/kg、50 mg/kg和75 mg/kg的肌醇,预饲期5 d,正饲期40 d。结果表明:饲喂添加肌醇的试验组肉兔血清TP、TC、LDL和HDL含量均高于对照组,其中,添加75 mg/kg组血清TP含量显著高于对照组(P0.05);试验组肉兔血清BUN、TG、CK和LDH含量均低于对照组,其中,添加50 mg/kg和75 mg/kg组血清BUN含量显著低于对照组(P0.05);添加肌醇对肉兔血清中ALB、Ca、P、ALT、AST和ALP的含量无显著影响(P0.05)。     

复合益生菌制剂对繁殖母猪生产性能的影响

为了研究不同添加水平的复合益生菌制剂对繁殖母猪生产性能的影响。试验选用胎次(6-9)、体况、背膘等差异不显著的二元杂母猪24头(P0.05),随机分成1个对照组和3个试验组,共4组,每组3个重复,每个重复2头母猪。对照组饲喂基础日粮,试验组第1、2、3组分别在基础日粮基础上添加0.05、0.10和0.15 mg/kg的复合益生菌制剂。第1阶段饲粮是从妊娠75 d喂至妊娠90 d,第2阶段饲粮是从妊娠91 d喂至妊娠114 d再到哺乳21 d断奶,测定母猪繁殖性能、仔猪生长性能以及仔猪免疫球蛋白指标。结果表明母猪繁殖性能以添加0.15 mg/kg复合益生菌组的初生质量最高但与对照组差异不显著(P0.05),显著高于0.05 mg/kg组(P0.05);初生窝质量同上。健仔率0.10 mg/kg、0.15 mg/kg组显著高于对照组和0.05 mg/kg组(P0.05),较对照组分别高出8%、7%。仔猪断奶成活率差异不显著(P0.05);平均断奶窝质量:0.10 mg/kg、0.15 mg/kg分别显著高于0.05 mg/kg组(P0.05),相比对照组分别提高了4.98%和5.45%,但差异不显著(P0.05)。免疫球蛋白各试验组指标均高于对照组,其中IgG、IgA显著高于对照组(P0.05),以添加0.15 mg/kg复合益生菌组最高。所以添加0.15%的复合益生菌制剂对提高繁殖母猪的生产性能的效果最佳。建议繁殖母猪基础日粮中以添加0.15 mg/kg的复合益生菌制剂为宜。     

蛋氨酸锌在蓝狐生产中的应用研究

为了研究日粮中添加蛋氨酸锌(Zn-Met)对冬毛期蓝狐生长性能(日增重、饲料转化率)及毛皮质量的影响,试验采用随机分组的试验设计方法,选用150只体重相近的冬毛期蓝狐,随机分为5组,每组30只。对照组(A组)饲喂基础日粮,试验组在基础日粮中分别以Zn-Met形式添加分别为30 mg/kg(B组)、60 mg/kg(C组)、90 mg/kg(D组)、120 mg/kg(E组)。结果表明:试验组平均日采食量、平均日增重与对照组相比均有所提高;料重比降低,其中B组效果最好且显著高于其他各组(P0.05);试验组鲜皮长度与对照组相比有所增加,试验组鲜皮面积与对照组相比均极显著增加(P0.01);试验组针毛长度均显著高于对照组(P0.05),试验组绒毛长度均显著高于对照组(P0.05),且B组效果最好。说明冬毛期蓝狐日粮中蛋氨酸的最适添加水平为30~60 mg/kg。     

百里香酚对生长期水貂营养物质消化及抗氧化指标的影响

为研究植物精油百里香酚对生长期水貂营养物质消化及抗氧化指标的影响,选取平均日龄60 d,体质量(0.93±0.15) kg,已注射疫苗的短毛黑公貂40只,随机分成4组,每组10只.对照组饲喂基础日粮,试验组在饲喂基础日粮的基础上分别添加100,200,300 mg/kg百里香酚.预饲期7d,正式期42 d.结果 表明:与对照组相比,各试验组的体增重和营养物质消化率等指标均差异不显著(P＞0.05).与对照组相比,添加300 mg/kg百里香酚组丙二醛(MDA)活性极显著降低(P＜0.01),其他试验组MDA活性也显著降低(P＜0.05),但各试验组间无显著差异;添加百里香酚的各试验组超氧化物歧化酶(SOD)活性与对照组相比差异不显著(P＞0.05),添加200 mg/kg百里香酚组显著提高过氧化氢酶(CAT)活性(P＜0.05).本试验条件下,综合考虑抗氧化指标和营养物质消化率以及添加剂成本,以添加100 mg/kg百里香酚为最佳.     

喹赛多对肉用齐卡兔生产性能的影响

选择体重基本一致的30日龄齐卡兔60只(公母各半),随机分成5组,即A组(对照组)、B组、C组、D组和E组,每组3个重复,每重复4只,单笼饲养。其中对照组饲喂基础日粮,其余各组分别在基础日粮中添加喹赛多50mg/kg、喹赛多100mg/kg、喹乙醇50mg/kg、喹乙醇100mg/kg,进行为期60d的饲养试验。结果表明:各组添加剂均能显著提高肉兔日增重(P<0.05);100mg/kg喹赛多组与对照组日耗料量相当,而其它各组日耗料量则显著低于对照组(P<0.05);各试验组与对照组相比,均能显著降低料重比(P<0.05),但各试验组间差异不显著(P>0.05);各组添加剂均能降低肉兔腹泻率。综合评价,喹赛多组优于喹乙醇组,适宜添加量为100mg/kg。     

盐霉素对肉鸭生产性能影响的研究

将２４０只１日龄樱桃谷鸭随机分成４组,每组６０只,组内设二个重复。Ⅰ,Ⅱ和Ⅲ组在基础日粮中分别添加２５０ｐｐｍ（ｍｇ／ｋｇ）,５００ｐｐｍ和１０００ｐｐｍ盐霉素预混剂,Ⅳ组为对照组,喂基础日粮,试验６周。结果表明：各处理组鸭的死淘率均低于对照组鸭;添加盐霉素各组鸭的平均体重均高于对照组,Ⅱ组极显著高于对照组,显著高于Ⅰ和Ⅲ组,Ⅰ,Ⅲ组显著高于对照组;料重比以Ⅱ组最优,说明在肉鸭饲料中添加５００ｐｐ     

Effects of dietary supplementation of modified zinc oxide on growth performance,nutrient digestibility,blood profiles,fecal microbial shedding and fecal score in weanling pigs

One hundred and forty piglets ((Landrace × Yorkshire) × Duroc, 21 day of age) with an initial weight of 6.50 ± 0.71 kg, were randomly allotted into four treatments to determine the effects of a modified form of zinc oxide (ZnO) on growth performance, nutrient digestibility, blood profiles, fecal microbial shedding and fecal score in weanling pigs. Dietary treatments were: (i) NC, negative control, basal diet containing zinc (Zn) from the premix; (ii) PC, positive control, basal diet containing Zn‐free premix + 3000 ppm ZnO; (iii) H1, basal diet containing Zn‐free premix + 3000 ppm ZnO (phase 1, days 1 to 14)/200 ppm modified ZnO (phase 2, days 15 to 42); (iv) H2, basal diet containing Zn‐free premix + 300 ppm modified ZnO (phase 1)/200 ppm modified ZnO (phase 2). During days 1 to 14, average daily gains (ADG) were higher (P = 0.04) in PC, H1 and H2 groups than that in NC group. Overall, H1 treatment increased the ADG compared with NC (P = 0.05). On day 14, the alkaline phosphatase and plasma Zn concentration were increased (P = 0.01 and 0.04, respectively) in PC, H1 and H2 treatments compared with NC treatment. On days 14 and 42, the fecal Lactobacillus counts in NC group were lowest (P = 0.01, P = 0.04 respectively) among treatments. All supplemented groups showed lower (P = 0.03) fecal score than NC treatment on days 21 and 28. In conclusion, dietary supplementation with modified ZnO increased growth rates and reduced fecal scores in weanling pig. Modified ZnO could be used as a substitute to ZnO as a growth promoter and reduce Zn excretion to the environment because of the lower dosage. [Correction added on 3 February 2015, after first online publication: the initial weight of ‘6.50 ± 1.11 kg’ has been replaced with ‘6.50 ± 0.71 kg’ in the abstract.]     

The effect of supplementing organic diets with fish meal and premix on the performance of pigs and some meat and blood characteristics

The aim of this study was to determine the effect of fish meal and mineral-vitamin premix, supplementing organic diets, on the performance of pigs and some meat and blood characteristics. The experiment was conducted on an organic pig fattening farm. The study involved 120 pigs with an approximate 25 kg body weight. Animals were divided into 3 groups, kept in pens, 10 animals each. Group I (control) animals were fed with plant feedstuffs of organic origin. Diets for group II and III were enriched with fish meal or fish meal and vitamin-mineral premix, respectively. The experiment was carried out till pigs reached a weight of 115 kg. Feed samples were subjected to laboratory analyses. Body weight (3 times) and feed intake were recorded. Blood samples were collected (2 times) to determine hematological and biochemical indices. Some parameters in meat samples were also determined. The fish meal addition improved (P < or = 0.05) the average daily gains as well as feed conversion ratio during fattening period and mineral-vitamin premix significantly (P < or = 0.05) fortified fish meal influence. Fish meal supplement improved (P < or = 0.05) also some carcass characteristics. Supplementation of the diet with premix additionally decreased (P < or = 0.05) backfat thickness and increased share of meat in carcass. Fish meal improved (P < or = 0.05) some meat characteristics and elevated content of some polyunsaturated fatty acids. An increase in hemoglobin, red blood cell, white blood cell and cholesterol level in blood of animals from both experimental groups were also found. The results obtained proved the usefulness of fish meal and mineral-vitamin premix in the fatteners nutrition based on organic diets.     

Effect of enrofloxacin-Na against pathogens related to the respiratory and alimentary diseases in suckling and weanling piglets

A field trial was conducted to evaluate effect of enrofloxacin-Na against pathogens related to the respiratory and alimentary diseases in eighty suckling piglets (6-7 days old) and eighty weanling piglets (5-6 weeks old). Respective twenty of the suckling and weanling piglets were assigned to each of 4 experimental groups; control (non-treated), clinical injection dose (CID), 2x clinical injection dose (2CID). and premix. A 0.05 ml (2.5 mg) of enrofloxacin-Na injection (5% solution, 1 ml) per kg body weight of piglets as CID was injected intramuscularly for 3 days and the clinical signs were observed for 9 days. The premix (150 ppm) of enrofloxacin-Na was administered with feed for 7 days ad libitum and the clinical signs were observed for 13 days. The enrofloxacin-Na-treated piglets showed a higher increase in body weight and a lower feed per gain than the control piglets. In addition, the treatment of enrofloxacin-Na, regardless of the route of administration, decreased the incidence rate of diarrhea in suckling piglets and respiratory symptoms in weanling piglets. The isolation index of E. coli and Cl. perfringens during the treatment periods was also lowered by the enrofloxacin-Na treatment in both suckling and weanling piglets. The antibiotics was also evaluated as safe locally and whole bodily as treated by injection or feeding. These results indicate that the newly developed antibiotics, enrofloxacin-Na, is very useful for the prevention and therapy of swine diseases in the pig industry.     

新型预混料对奶牛酒精阳性乳防治作用的研究

为了验证针对酒精阳性乳（alcohol positive milk,AMP）发病机理制作的新型预混料对奶牛酒精阳性乳的防治效果,本研究设计了试验1和试验2：在试验1中,根据泌乳天数、酒精阳性乳程度,采用完全随机区组方法将100头荷斯坦泌乳后期牛分为对照组、低剂量（LDG）、中剂量（MDG）和高剂量组（HDG）,每组5个重复,每个重复5头牛,各组在日粮中依次添加0、50、100和150 g/（头·d）新型预混料,试验期26 d,3 d为1个采样周期;在试验2中,按照试验1的分组方法,将370头荷斯坦泌乳后期奶牛分为对照组和试验组,每组185头,在日粮中依次添加0和100 g/（头·d）新型预混料,试验期35 d,每5 d为1个采样周期。将奶样与等量的75%中性酒精混合,通过观察奶样状态判断酒精阳性乳发生程度。试验1结果表明,与对照组相比,在日粮中添加50 g/（头·d）新型预混料对酒精阳性乳的发生率有一定的影响（P>0.05）;日粮中添加100和150 g/（头·d）新型预混料能显著降低酒精阳性乳发生率（P<0.05）,尤其对降低强阳性酒精阳性乳发生率效果极显著（P<0.01）,但两组之间差异不显著（P>0.05）。试验2结果表明,到试验结束时,日粮中添加100 g/（头·d）新型预混料可使酒精阳性乳总发生率降低75.73%,强阳性酒精阳性乳发生率降低90.82%。以上结果表明,新型预混料能有效防治奶牛酒精阳性乳的发生,且日粮中新型预混料的最佳添加量是100 g/（头·d）。     

育肥猪出栏前去掉预混料对猪胴体与肉品质的影响

为探讨育肥猪出栏前不同时间去掉预混料对胴体和肉品质的影响,选用180头体重为80kg左右的杜长大三元杂交育肥猪,随机分成3组(对照组、试验1组、试验2组),每组3个重复(圈),每重复(圈)20头。对照组饲喂含有4%商业预混料的日粮,试验1组宰前2周饲粮中去掉预混料(用沸石粉代替预混料),试验2组宰前4周饲粮中去掉预混料(用沸石粉代替预混料)。屠宰后测定并比较各组猪只的胴体品质和肉品质指标。结果表明:宰前不同时间去掉预混料对猪胴体品质、肉品质均无显著影响(P>0.05)。研究结果为减少生猪养殖过程中的粪污排放对环境的污染以及降低生产成本提供了有益参考。     

盐酸沃尼妙林预混剂对猪气喘病的临床疗效试验

进行了盐酸沃尼妙林预混剂对猪气喘病的疗效试验。结果显示:以盐酸沃尼妙林预混剂300 mg/kg和400 mg/kg两种剂量混饲给药,对猪气喘病均有显著效果。盐酸沃尼妙林预混剂可有效控制猪体内的肺炎支原体病原,促进肺炎支原体所致肺组织病变的好转,甚至临床治愈,从而改善气喘病猪的症状。     

Efficacy of an albendazole feed formulation against bovine gastrointestinal nematodes including arrested larvae of Ostertagia ostertagi

The efficacy of an albendazole feed premix formulation was compared with that of an albendazole drench suspension for control of gastrointestinal nematodes in 31 beef cattle. The premix (11 cattle) and drench suspension (9 cattle) were found to have similar efficacies at a dosage of 7.5 mg/kg of body weight. When compared with controls (11 cattle), both formulations caused significant (P less than 0.05) reductions in worm counts with an efficacy of 98% or greater against adult Haemonchus placei, Ostertagia ostertagi, Trichostrongylus axei, Cooperia punctata, and C pectinata. There was no significant effect against arrested 4th-stage larvae of O ostertagi. Adverse effects of albendazole treatment were not observed, and the premix formulation was readily consumed by cattle.