大豆浓缩蛋白替代鱼粉、乳清粉饲喂断奶仔猪试验

大豆浓缩蛋白是脱除大豆中的可溶性糖分和多种抗营养因子的大豆蛋白制品,具有低抗原性和粗蛋白质含量高等优点。本试验用大豆浓缩蛋白部分或完全替代断奶仔猪饲粮中的乳清粉和鱼粉,观察其使用效果。大豆浓缩蛋白由秦皇岛金海食品工业有限公司提供,粗蛋白质含量68.70%,售价7元/kg。选择35日龄断奶,体重8.8kg左右的断奶1天的杜×长×大三元杂种猪96头,随机分为对照组、试验1组、试验2组,每组32头,每组4个重复,每重复8头猪。对照组饲喂基础饲粮;试验1组饲喂用大豆浓缩蛋白部分替代鱼粉、乳清粉的饲粮;试验2组饲喂用大豆浓缩蛋白完全替代鱼粉、…     

“2799生物蛋白”在早期断奶仔猪料中的使用

养猪管理策略中 ,排在第一位的是仔猪早期断奶。它有利于提高母猪的繁殖力 ,增加年产仔数 ,有利于提高产仔舍利用率和劳动生产力 ,有利于疾病的控制 ,降低生产成本 ,提高经济效益。采用仔猪早期 ( 2 1日龄 )断奶技术 ,能否成功并取得预期效果 ,关键是解决断奶后腹泻问题。仔猪断奶后由吃奶转为吃料 ,营养突变 ,发生应激 ,消化不良 ,导致腹泻。为此 ,许多饲料厂家 ,针对早期断奶仔猪的生理特点 ,选用防止断奶应激、适合于仔猪断奶过渡期需要的、功能性的原料如乳清粉、脱脂奶粉、血浆蛋白粉、血球蛋白粉、肠膜蛋白粉、膨化大豆粉等 ,开发出高…     

天心膨化乳猪料551E饲喂断奶仔猪的对比试验

近年来,膨化乳猪饲料在我国正逐步受到青睐,币场上出现了一系列相应产品。为验证天心膨化乳猪料551E饲喂断奶仔猪的效果,特做了如下对比试验。1材料与方法1．1材料天心膨化乳猪料551E（以下简称天心551E）,为湖南天心牧业有限公司生产。对比乳猪料551由市场合法渠道购买,由某合资公司生产（以下简称合资551）。1．2供试猪的选择与分组在产期相近的28日龄断奶的“杜x长·大”三元杂交仔猪中,选择相近的仔猪门2头,按单因素设计试验,随机分为二组,每组66头,然后随机分组。对照组为合资551,试验组为天心55iE。13饲养管理及检测项目…     

添加饲用酶制剂对断奶仔猪生长性能的影响

饲用酶制剂能提高断奶仔猪的生长性能,本试验通过在降低3%和5%营养水平的玉米-豆粕型日粮中添加"英恒"饲用酶制剂0.1%和0.08%,探讨其对断奶仔猪生长性能的影响,试验表明:降低3%营养水平+0.08%酶制剂组的平均日增重比对照组提高2.47%(P>0.05),料肉比降低6.99%(P<0.05);降低5%营养水平+0.08%酶制剂组的平均日增重比对照组提高1.51%,料肉比降低4.49%(P>0.05);降低5%或3%营养水平添加0.1%酶制剂对断奶仔猪的增重无显著影响(P>0.05),但均能显著降低料肉比(P<0.05)。加酶各组的经济效益都有所提高,降低3%营养水平+0.08%的酶制剂和降低3%营养水平+0.1%的酶制剂同对照组相比经济效益都提高了8.26%。     

产酶益生素对断奶仔猪生产性能影响的研究

在仔猪日粮中分别添加0.1%的产酶益生素和复合酶,研究对生产性能的影响,结果表明产酶益生素能显著(P<0.05)提高猪的日增重,提高饲料报酬和降低腹泻率。     

酸制剂饲喂断奶仔猪试验

仔猪消化系统发育不完善 ,不能分泌足够的胃酸刺激内源性消化酶的分泌 ,对以植物蛋白为主的饲料消化不良 ,导致了仔猪断奶后消化机能紊乱 ,出现生长阻滞甚至死亡。许多试验表明 ,在乳、仔猪日粮中添加酸化剂可有效地缓解这种现象 ,减缓应激 ,减少腹泻 ,从而提高日增重 ,降低料肉比。本试验旨在对两种酸化剂做对比试验 ,看其对断奶仔猪生产性能和腹泻的影响 ,从而为生产中应用酸化剂提供科学的数据。1　材料与方法1 1　试验动物试验选择断奶后二元杂交仔猪 (长大 )60头 ,随机分成 3组 ,每组 2 0头 ,各组起始体重相近 ,无明显差异 ,每组 1个…     

复合酶制剂对早期断奶仔猪生长性能的影响

试验研究了复合酶制剂对96头(35±2)日龄断奶仔猪生长性能的影响。试验采用单因子设计,在相同基础日粮中分别添加0、0.5%、1.0%、1.5%的复合酶制剂组成4种日粮。5周饲养试验结果表明:加酶饲粮可明显提高早期断奶仔猪日增重,降低料重比,并能促进仔猪健康,提高经济效益。其中以0.5%酶制剂组添加效果最好,与对照组相比,平均日增重显著提高(P<0.05),料重比降低15.0%,腹泻频率降低29.7%,每千克增重成本降低0.48元,头均毛利提高26.36元。     

高活性蛋白对断奶仔猪生长性能的影响

为研究高活性蛋白对断奶仔猪生长性能的影响,将116头28日龄断奶仔猪按公母各半、体重相近的原则分成3组：对照组39头,饲喂玉米-豆粕-鱼粉型饲粮;试验Ⅰ组39头,饲喂以3%高活性蛋白替代对照组饲粮中1%鱼粉和2%豆粕的饲粮;试验Ⅱ组38头,饲喂以3%高活性蛋白替代对照组饲粮中1%玉米和2%鱼粉的饲粮。结果表明,试验Ⅰ组、试验Ⅱ组与对照组相比,日增重分别提高9.36%（P〈0.05）、3.44%（P〉0.05）,料重比分别降低7.0%、8.5%（P〈0.05）,腹泻率降低1.3和0.7个百分点,每头猪获利提高24.8%、14.57%。表明饲粮中用高活性蛋白代替部分豆粕及昂贵的鱼粉可以提高仔猪增重,改善饲料转化率,降低仔猪腹泻率,提高经济效益。     

双乙酸钠饲喂断奶仔猪试验

双乙酸钠（ＳｏｄｉｎｍＤｉａｃｅｔａｔｅ）简称ＳＤＡ,是一种多功能饲料添加剂,具有高效防腐保鲜作用外,尚能增加饲料营养价值,提高饲料利用率,促进畜禽生产性能改善,调节大肠杆菌及防治由病原微生物所致的疾患作用。断奶仔猪的消化机能尚未发育完善,消化酶和胃酸分泌不足。为探明ＳＤＡ对断奶仔猪生长及抗病效果,为饲料厂及养殖业利用ＳＤＡ饲喂断奶仔猪提供科学依据,笔者于１９９６年１２月７日～１９９７年１月１５日进行了ＳＤＡ饲喂断奶仔猪的试验,现报告如下：１材料与方法１．１试验材料ＳＤＡ由化工部饲料添加剂技术开…     

养猪生物安全

一、建立养猪生物安全程序的必要性 通常认为,生物安全是指防止疾病从养殖场外传播到养殖场内,但真正意义的生物安全还应包括防止疾病在养殖场中传播。随着猪疾病流行模式发生变化,生物安全的重要性也日益突出。 以前,养猪场兽     

月鳢的生物学特性及其养殖技术

月鳢[Channaasiatica(Linnaeus)],俗称七星鱼、点星鱼、点秤鱼等,属鲈形目、鳢科、月鳢属,是一种优质小型淡水野生鱼类。月鳢肌肉中粗蛋白质含量为21.8%～22.5%,粗脂肪含量为2.3%～2.7%,肉嫩少刺,营养丰富,味道鲜美,可食率达76%,且具有滋补生肌、活血去湿等多种药用功效,因而深受广大消费者喜爱,市场前景广阔,开发价值较高。1月鳢的生物学特性1.1形态特征月鳢体直长,呈棒状,尾部侧扁,尾柄短而高,头部宽扁,头、体均被鳞片,头顶、头侧鳞片大。背鳍、臀鳍长,没有腹鳍,尾鳍圆形。侧线完全,体侧分布许多黄绿色亮点,背鳍和臀鳍常有亮绿小斑点。体…     

The integration of grazing management and summer treatments for the control of trichostrongylid infections in Merino weaners

OBJECTIVE: To compare two strategies for the preparation of pastures that have reduced trichostrongylid infections during winter and spring for Merino weaners. DESIGN: A replicated field experiment was conducted over two successive years. A 'standard' strategy, comprising set-stocked wethers given anthelmintic treatments in late October and early February, was compared with a 'new' one in which intensive grazing for 1 month after each treatment and destocking for 1 or 2 months was integrated with the anthelmintic treatments. Paddocks prepared according to these strategies were set-stocked at 15 Merino weaners/ha from April to October inclusively. RESULTS: Contamination of pastures prepared according to the new strategy was substantially reduced compared to those of the standard strategy. Worm counts showed that on new strategy paddocks the numbers of trichostrongylid larvae, except Nematodirus spp, were reduced by 50 to 95% compared to standard strategy paddocks. Worm egg counts from the set-stocked weaners were reduced by about 50% on new strategy paddocks from April to October. Weaners grazing the new strategy paddocks grew significantly more clean wool (254 g, P = 0.01) and were significantly heavier in October (3.2 kg, P = 0.01) than weaners in the standard strategy paddocks. The improved production was attributable partially to better pasture growth early in winter and partially to reduced parasitism. CONCLUSION: The new strategy is a simple, practical and widely applicable example of the integration of grazing management with strategically timed anthelmintic treatments to reliably reduce trichostrongylid infections in weaners grazing during winter and spring.     

发酵床养猪微生物降解系统调控研究

利用发酵床养猪,通过对圈舍垫料接种后的温度、湿度、各种酶活性、有机酸、无机氮、碳氮比（C/N比）各项指标的随时检测,并对发酵床进行日常管理,摸索出发酵床系统运转的规律,确定维持发酵床系统高效运转的评价指标,制定出其微生物降解系统的调控方法。     

饲养仔猪的高消化蛋白源

在断奶后阶段，仔猪要经历日粮从母乳到其他饲料的过渡过程。由于这一过渡会造成仔猪腹泻，因此饲喂高度可消化的饲料非常重要。一种新的饲料产品具有可提高断奶后仔猪采食量、生长性能和经济效益的特点。     

利高霉素、新肥素、可肥素在肉仔鸡生产中联合应用药效试验

本试验选择快大白羽肉雏鸡25000羽,分为对照和试验两组,其中试验组按一定比例联合添加辉瑞苏州动物保健品有限公司生产的利高霉素100、新肥素325可溶性粉剂和可肥素110促生长饲料添加剂以及速解灵无菌注射粉剂。结果显示:试验组平均成活率为95.44%,对照组平均成活率为95.76%;试验组平均出栏体重为2.36kg/羽,对照组平均出栏体重为2.21kg/羽;试验组平均料肉比为1.73:1,对照组平均料肉比为1.79:1;扣除饲料、所有药费等项后,试验组比对照组多赢利0.50元/羽。     

仔猪黄白痢和断奶后腹泻病的疫苗预防效果观察

仔猪黄白痢和断奶后腹泻病在全国各地猪场均有不同程度的发生。虽然经过不断的治疗 ,能把死亡率控制在较低水平 ,但所造成的生长发育缓慢和大量的药物开支对养猪业的发展有着相当大的影响。为解决这个问题 ,不少科研单位研制出了各种疫苗进行预防 ,但其预防效果参差不齐。我场选用浙江农业大学动物科学学院研制的大肠杆菌四价苗和仔猪腹泻水肿病疫苗进行实际预防效果试验 ,取得了较满意的效果。报道如下。1　材料与方法1 .1　试验猪　杭州富阳邦达养殖有限公司下属畜禽水产实验场 1 999年 8月提供的产期相同或相近的经产母猪。1 .2　疫苗　…     

A new system for the protein feeding of ruminants: The PDI system

To replace the digestible crude protein system (DCP) a new system is proposed which is named the PDI system (Protéines Digestibles dans l'Intestin grêle). It estimates the quantity of amino nitrogen N × 6.25 absorbed in the small intestine from the dietary protein which has escaped fermentation in the rumen, and the microbial protein arising from that fermentation.The extent of N degradation in the rumen and the microbial protein yield (135 g/kg of digestible organic matter intake) were obtained using an equation describing the flow of non-ammonia N entering the duodenum. The true digestibility of microbial true protein (80% of microbial crude protein) was considered equal to 0.70 and that of dietary protein was calculated from nitrogen and organic matter digestibilities of each feed.Two PDI values are ascribed to each feed: one (PDIN) calculated from both its non-degradable N and degradable N contents and the other (PDIE) from both its non-degradable N contents and its content of rumen available energy (in fact its digestible organic matter content). When calculating the PDI value of a diet, the PDIN and PDIE values of the different ingredients are summed separately: the PDI value of the diet is the lower of the two values.The PDI requirements of animals have not been measured previously. They were calculated from nitrogen balance trials on non-producing animals and from feeding trials on producing animals. The mean efficiency of PDI utilization was found to be 0.67 for milk production in cows, 0.60 for body gain in cattle and 0.60 for pregnancy in sheep. These values have also been used with animals of other species.The advantages of the PDI system over the DCP system, as well as its shortcomings, are discussed. It is compared with alternative systems which have been proposed recently in other countries.