益生素在配合饲料中的应用技术研究

益生素可以活菌及其产物形式直接用于饲喂畜禽,其能够协调畜禽消化系统微生物平衡,补充畜禽体内的有益生理性菌群或正常菌群,从而提高畜禽免疫力、抗病力以及日粮消化率,进而达到防病治病和促生长的双重作用.就益生素在配合饲料中的应用研究与生产技术进行了综述.     

复合微生物菌剂在猪粪无害化处理中的应用

为了研究微生物菌剂对粪便恶臭组分及微生物菌群的影响,选取猪粪和玉米秸秆作为堆肥原料进行28 d的堆肥试验.试验分为5组,A、B和C组分别用玉米秸秆调节堆体水分为40％、50％和60％,D和E组不加玉米秸秆,A、B、C和D组分别接种微生物菌剂,E组不添加菌剂.结果 显示,B组堆体的高温持续时间最长,粪便腐熟效果最好.与E...     

复方中草药添加剂对稻鸭共作模式下成都麻鸭生理效应的影响研究

为研究复方中草药添加剂对稻鸭共作模式下成都麻鸭生长性能、血清生化指标、抗氧化指标及免疫指标的影响,试验选取体重相近、体况健康的15日龄成都麻鸭240只,随机分为4组,每组5个重复,每个重复12只。4组为对照组饲喂基础饲粮;试验1、2、3组在基础饲粮中按照质量比分别添加0.5%(低剂量组)、1%(中剂量组)、2%(高剂量组)的复方中草药,试验期90 d。结果显示:(1)试验1、2、3组的平均日增重分别较对照组提高2.19%、4.34%、4.98%(P<0.05);试验2、3组的料重比分别较对照组降低3.37%、3.63%(P<0.05);(2)试验2组和3组的总蛋白(TP)分别较对照组提高4.20%、6.08%(P<0.05);试验2组和3组的尿素氮(BUN)分别较对照组降低12.72%、16.36%(P<0.05);试验2组和3组的谷草转氨酶(ALT)分别较对照组降低15.84%、19.22%(P<0.05);试验3组的谷丙转氨酶(AST)较对照组降低19.34%(P<0.05);(3)试验2组和3组超氧化物歧化酶(SOD)分别较对照组提高15.80%、20.00%(P<0.05);试验3组的总抗氧化能力(T-AOC)较对照组提高22.37%(P<0.05);(4)三个试验组的IgA、IgM、IgG、IFN-γ、IL-2显著高于对照组(P<0.05),试验2组的肿瘤坏死因子-α(TNF-α)较对照组提高10.06%(P<0.05),试验2组和3的组溶菌酶(LZM)分别较对照组提高6.79%、5.66%(P<0.05)。综上,中草药添加剂能有效提高稻鸭共作模式下成都麻鸭的生长性能、血清生化指标、抗氧化指标及免疫指标,本试验条件下,最佳饲喂剂量为1%。     

不同佐剂对鸡新城疫疫苗免疫调节作用的影响

试验以300只AA雏鸡为试验动物,将其随机分为4组,A、B、C组分别接种相同剂量的甲壳素、蜂胶、铝胶佐剂苗,D组为对照组。结果表明,三种佐剂的疫苗在对肉鸡组免疫的第3、4、5、6、7、9、11、13、15、20、25天后,甲壳素疫苗组H I抗体效价显著高于其它组,蜂胶疫苗组H I抗体效价其次,铝胶疫苗组抗体H I效价最低;用三种不同佐剂的疫苗对肉鸡免疫后第26天称其重量,甲壳素佐剂疫苗组免疫后的肉鸡增重效果最好,蜂胶疫苗组居中,铝胶疫苗组最差。     

奶粉加工过程中维生素稳定性的研究

研究了维生素在乳粉加工过程中的稳定性.结果表明,原料奶经过均质、杀菌、浓缩、喷雾干燥后,各维生素的损失率分别为维生素A 97.3%、维生素D 94.7%、维生素E 96.7%、维生素B1 93.1%、维生素B2 90.8%;维生素C 99.5%.     

A surgical approach to the lateral compartment of the equine guttural pouch in the standing horse: modification of the forgotten "Garm technique"

The objective of this study was to evaluate the feasibility, efficacy and complications following lavage and drainage of the lateral compartment (LC) of the equine guttural pouch (GP) using a modified Garm's technique (MGT). In an ex vivo study (study 1), six cadaver heads were examined to assess the anatomical limits of the surgical approach and whether vital structures might be damaged. This was followed by an in vivo study (study 2) in which a lavage/drainage tube was placed for 3 days into each LC of four standing horses using the MGT. In both studies, the procedure offered direct access into the LC and indirect access into the medial compartments of the GP. In study 1, the MGT provided a rostroventral point of access allowing drainage of the LC, with no obvious iatrogenic damage. In study 2, the MGT permitted lavage of the entire GP in three healthy horses and one horse with mild GP empyema. The only major complication was development of emphysema of the lateral wall of one LC, with secondary collapse of the mucous membrane. The time for secondary wound healing was 12-14 days. The MGT can be performed safely in standing horses and may be of value in providing access for lavage and drainage in horses with mild GP empyema.     

甘南玛曲七种主要饲草营养价值比较

对甘南玛曲七种主要饲草的干草产量、高度、常规养分(粗蛋白质、酸性洗涤纤维、粗脂肪、粗灰分、无氮浸出物、钙、磷)进行测定,用灰色关联度法对其营养价值进行评价.结果表明:天然草地干草产量为2882kg/hm2,比新疆大叶苜蓿、甘农l号苜蓿、红豆草和箭(苫)豌豆高,比绿麦、燕麦和垂穗披碱草低,牧草营养价值为甘农1号苜蓿＞绿麦＞箭(苫)豌豆＞垂穗披碱草＞新疆大叶苜蓿＞燕麦＞天然草地＞红豆草.     

RADIOGRAPHIC FINDINGS IN DOGS WITH SPONTANEOUS PULMONARY THROMBOSIS OR EMBOLISM

Thoracic radiographs of 21 dogs with necropsy-confirmed pulmonary thrombosis or embolism (PTE) were reviewed. Two major lung patterns were seen: (1) regional oligemia, giving the impression of a hyperlucent zone; (2) alveolar pulmonary infiltrate, indicating hemorrhage or infarction. Hemorrhage and infarction could not be differentiated radiographically. Other common findings were attenuation or loss of visualization of a lobar artery or lobar vein and pleural effusion, particularly with infarction and cardiac disease. PTE was often associated with renal disease (glomerulonephritis, amyloidosis), septic processes, pancreatitis, systemic venous or right heart thrombosis, cardiac insufficiency, and hypercorticism.