脂肪酸钙饲喂杂交肉仔鸡的试验

1试验材料和方法 本试验选在滨州职业学院养鸡场的第二号杂交肉仔鸡舍,共选择日龄相同,体重、体质基本相似,健康无病的杂交肉仔鸡990只.随机分成3组,每组330只,分别为试验1、试验2、对照组.各组情况如表1.     

牛脂肪添加剂饲喂肉仔鸡的试验

为了使肉鸡能更大的发挥其生产性能和生长优势，在饲料中添加一定量（0．5％－2％）的牛脂肪，可以大幅度提高肉鸡的生长性能，平均提高增重360克（P＜0．05）、（491只），每只鸡多收入纯利2．406元，死亡率降低0．82％，且有增重快，效益高、成本低、来源广，易得到等特点，适用于各类鸡场和个体养殖户应用。是我区养禽业发展的又一条新途径。     

大豆脂肪酸钙替代液体油脂饲喂生长肥育猪试验报告

大豆脂肪酸钙是由大豆油脂水解所得的脂肪酸经皂化反应制取的脂肪酸钙盐,是由富含油酸、亚油酸和亚麻酸等脂肪酸与钙离子结合的化合物,在小肠中极易溶解,是一种良好的固体能量饲料来源。在奶牛饲料中使用可提高产奶量,改善奶牛体况,提高繁殖率。本试验用大豆脂肪酸钙代替猪饲料中的液体油脂饲喂生长肥育猪观察其使用效果。1材料和方法1.1试验材料本试验所用大豆脂肪酸钙产品含钙6.32%,总能35.93MJ/kg。1.2试验设计选用体重27.00±1.00kg杜×长·大三元杂种猪42头,每头猪戴耳标,随机分为对照组和试验组,每组21头猪,每组3个重复,每重复7头猪;…     

添加脂肪酸钙提高蛋鸡生产性能的试验

脂肪酸钙是一种新型的能量添加剂,动物试验表明,可显著提高生产性能。而将脂肪酸钙用作蛋鸡饲料添加剂的研究较少。为此,设计本试验。１材料与方法１．１脂肪酸钙以动物脂肪为原料,含脂肪酸８７％,钙９％,水分４％。１．２试验动物选体重、产蛋率较为一致的健康罗斯...     

外源性脂肪乳化剂饲喂肉仔鸡的试验

选取360只21日龄的AA肉仔鸡,随机分为3组,每组设4个重复,每重复30只。对照组饲喂基础日粮,试验1组在基础饲粮中添加250mg/kg脂肪乳化剂,试验2组添加500mg/kg脂肪乳化剂。试验分2阶段进行,22～35日龄饲喂I期日粮,35～49日龄饲喂II期日粮,每期结束时进行生长性能统计,并于每期试验结束前2d收集鸡群粪便进行消化率测试。试验结果表明,外源性脂肪乳化剂能有效提高肉仔鸡生产性能和脂肪消化率,平均日增质量提高7.5%(P<0.05),料重比下降6.1%(P<0.05),脂肪利用率提高6.8%(P<0.05)。     

加酶益生素饲喂肉仔鸡试验效果

本试验旨在探讨在肉仔鸡日粮中添加饲喂加酶益生素对其生长速度和饲料转化情况的影响。结果表明：在日粮中添加饲喂０．２％加酶益生素的试验组,平均日增重为４４．３ｇ;而未添加饲喂加酶益生素牟对照组,平均日理为３９．７ｇ。试验组比对照组提高日增重１１．６％,差异极显著。试验组料肉比为２．１３：１,对照组料肉比为２．３６：１,试验组比对照组提高饲料报酬９．７％,差异显著。     

粉浆蛋白粉代替豆粕饲喂肉仔鸡效果研究

肉仔鸡日粮中的蛋白质饲料主要是豆粕，用量大，价格高，导致成本增加，再加上不法商贩的掺杂使假，严重影响肉鸡生产的发展。招远市是粉丝的主要产地，每年的粉丝加工废液可生产4000万kg蛋白粉，其中蛋白质含量高达50％～60％，成本很低，但没有很好的利用，不仅是一种资源的浪费，而且对环境造成极大的污染。为此，我们进行了粉浆蛋白粉代替豆粕饲喂肉仔鸡的试验研究，现将结果报告如下。     

肉仔鸡无鱼粉饲料饲喂试验

<正> 鉴于鱼粉货缺价扬,我场子1986～1988年连续进行了肉仔鸡无鱼粉饲料全期饲养试验。1.材料和方法1.1 选择同日出壳一月龄"AA"商品一代健康雏鸡1400只,随机分为3组,对照组400只,试验1组600只,试验2组400只,试验期60天。1.2 采用网上育雏,原垫料育肥的方法。自由采食干粉料,自由饮水。每周空腹称重一次。管理条件相同。公母混养,饲料配方及营养水平见表1。     

大豆寡糖在肉仔鸡日粮中的应用

72只 1日龄艾维茵肉仔鸡 ,随机分成 3组 (对照组、试验组 1和试验组 2 ) ,对照组喂给基础日粮 ,试验组 1和试验组 2分别在基础日粮中添加 0 .3%的大豆寡糖和 0 .0 3%的金霉素 ,研究日粮中添加大豆寡糖 (SBOS)对肉仔鸡生产性能、肠道微生态、营养物质利用率及脂肪代谢的影响。结果表明 ,试验 1组的日增重和日采食量提高 ;2 1日龄肉仔鸡双歧杆菌的数量增加 ,而大肠杆菌的数量降低 ,4 2日龄肉仔鸡双歧杆菌和大肠杆菌的数量未受影响 ;营养物质利用率提高 ;粪便中胆固醇的含量增加 ,血清和鸡肉中胆固醇的含量未受影响。这证明大豆寡糖可以提高肉仔鸡的生产性能 ,提高营养物质利用率和改善肉仔鸡幼龄时的肠道微生态环境 ,因而可作为抗生素的替代品应用于肉仔鸡日粮中。     

脂肪酸钙在反刍动物中的应用及亚麻油脂肪酸钙的生产工艺

脂肪酸钙是一种新型高能饲料添加剂,是由脂肪和钙结合而成的保护性脂肪。目前大量研究表明,在动物日粮特别是反刍动物日粮中,添加脂肪酸钙可有效提高饲料的能量水平,进而提高动物的生产性能。选用富含多不饱和脂肪酸的脂肪,特别是富含亚油酸、α-亚麻酸的植物油制作脂肪酸钙饲喂奶牛可以提高乳脂中多不饱和脂肪酸含量,使生产出的奶不仅含丰富的蛋白质,而且有人体必需的多不饱和脂肪酸,为保健食品的开发生产提供了一条新的途径。亚麻油因含有丰富的亚麻酸和亚油酸(亚油酸12.7%、亚麻酸58.5%),常被用来制作成脂肪酸钙,用以提供不饱和脂肪酸。文章仅就脂肪酸钙在反刍动物特别是奶牛饲料中的应用及亚麻油脂肪酸钙的制作做一概述。     

Tall oil fatty acid inclusion in the diet improves performance and increases ileal density of lactobacilli in broiler chickens

1. Studies were conducted with tall oil fatty acids (TOFA) to determine their effect on broiler chicken performance and ileal microbiota. TOFA, a product originating from coniferous trees and recovered by fractional distillation of side-streams from pulp production, mainly comprises free long-chain fatty acids (~90%) and resin acids (~8%). Conjugated linolenic acids and pinolenic acid are characteristic fatty acid components of TOFA.

2. TOFA products at 750 mg/kg feed were tested in two 35-day broiler chicken trials, each using a wheat soya-based diet and with 12 replicate pens per treatment. In both trials, TOFA improved body weight gain at all time points (P < 0.001) and feed conversion efficiency during the first 21 days (P < 0.01). Two different dry TOFA formulations (silica carrier and palm oil coating) were tested and showed performance effects similar to liquid TOFA.

3. Ileal digesta of the broiler chickens was analysed for total eubacteria, Lactobacillus spp., Enterococcus spp., Escherichia coli and Clostridium perfringens on days 14 and 35. TOFA significantly increased total eubacteria and lactobacilli density on day 14 (P < 0.05). There was a significant positive correlation between these bacterial groups and broiler body weight on day 14 (P < 0.01).

4. A numerical reduction in C. perfringens was observed. In vitro growth inhibition studies showed that C. perfringens was strongly inhibited by 10 mg/l TOFA (P < 0.001), while common lactobacilli were resistant to >250 mg/l. The in vitro results were thus in line with in vivo observations.

5. The mechanisms behind the bacterial shifts and their role in performance improvement are unknown. Further purification of TOFA components is needed to identify the effective agents.     

大豆油脂肪酸钙制备工艺优化研究

为寻求制备大豆油脂肪酸钙的优化工艺,在复分解法初步研究基础上,采用三因素二次回归正交旋转组合设计,进行了大豆油脂肪酸钙制备工艺参数优化研究,建立了产品得率(Y)与复分解反应温度(X1)、用水量(X2)、超盐量(X3)之间关系的回归方程,即Y=91.48287+1.13938X1+1.82739X2+1.69316X3-1.77741X12-1.91710X22-1.52456X32+0.84250X1X2。从模型推知,当复分解反应温度为64.57℃、用水量为油重的7.58倍、超盐量为12.78%时,得率得到最大值92.74%。验证结果与模型值相符。     

"优补健"替代优质鱼粉养殖南美白对虾的试验

“优补健”是北京金泰得生物科技公司与华中农业大学生命科学技术学院合作,利用现代生物技术(发酵工程及酶工程)制作的新型优质蛋白原料。它是将大豆中超过70%的大分子蛋白降解为小肽(包括大量的营养肽及功能肽),并采用国家专利工艺生产技术(低温流化床工艺),将大豆中的抗营养因子彻底分解,细胞壁100%破碎,处理后的蛋白质消化率大于95%,远高于优质鱼粉。试验用10%“优补健”替代南美白对虾饵料中10%的优质鱼粉。结果表明,试验池(使用“优补健”饲料)在对虾增长、增重和生长速度上均好于对照池(使用对照组饲料);饵料系数无差异,2口池均为0.64;试验池虾的平均体长大于对照池,而且试验池虾粪较松软,说明在南美白对虾饵料中添加适量“优补健”有助于消化和吸收率的提高,并且经济效益显著。     

戊聚糖酶在肉鸡小麦-豆粕型日粮中的应用

1 材料与方法1.1 试验用酶制剂 试验所用的商品酶制剂为“特威宝PT酶制剂”(Allzyme PT),其主要成分为戊聚糖酶(阿拉伯木聚糖酶),活性为2000 XU/g。1.2 试验动物与分组 挑选体重、大小基本一致的1日龄艾维茵商品代鸡苗600只,随机分为4个处理组。A1组:河套     

Effects of diet,age and gender on the polyunsaturated fatty acid composition of broiler anatomical compartments

1.?The objective of this study was to investigate the effect of dietary fatty acid (FA) composition, age, and gender on the FA composition of different broiler anatomical compartments. Four dietary fat sources (palm fat, P; soybean oil, S; linseed oil, L; fish oil, F) were added to a wheat–soybean meal based diet at 30 g/kg in addition to 50 g/kg palm fat. Diets were fed separately to female and male birds from d 1 to either d 21 or d 42 of age.

2.?The total FA content (mg/100 g tissue) and the FA composition (g/100 g FAME) was determined in 7 anatomical compartments (skinless thigh muscle, skinless breast muscle, liver, heart, brain, abdominal fat pad, and remainders plus carcase trimmings named Rest compartment). The FA profiles differed greatly among compartments and were strongly affected by diet.

3.?The S diet resulted in a 2–3-fold increase of the proportion of C18:2n-6 and C20:4n-6 in all compartments compared to the other diets, except for brain.

4.?The response in the proportion of C18:3n-3 following feeding the L diet was much greater, with 4–20-fold increases compared to the other diets, except again for brain.

5.?In all compartments except brain, the L diet resulted in approximately a 2-fold increase in the proportion of C22:6n-3 compared to the P and S diets and smaller, but also significant, increases for C20:5n-3 and C22:5n-3.

6.?The proportions of C20:5n-3, C22:5n-3 and C22:6n-3 were much higher on the F diet in all compartments, except for brain, compared to the P and S diets. The F diet resulted in higher proportions of C22:6n-3 than the proportions of C20:5n-3 and C22:5n-3 in breast and thigh meat, and liver, in contrast to the other diets.

7.?Brain was less responsive than other tissues to changes in the dietary FA composition. The proportion of C22:6n-3 in brain was similar on the L and F diets.

8.?The effect of gender on the FA composition of different anatomical compartments was marginal. The long-chain n-3 and n-6 PUFA in breast, liver, and brain decreased with age.     

低聚果糖在肉鸡日粮中的应用效果试验

选用360只AA鸡研究低聚果糖对其生产性能的影响。结果，日糖中前期添加0．25％、后期添加0．15％的低聚果糖的效果较好，与日糖中添加50mg/kg金霉素+5mg/kg黄霉素的饲养效果一致