共查询到20条相似文献，搜索用时 187 毫秒
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通过青贮和氨化加工,可改善农作物秸秆的适口性、提高牛羊等反刍动物的采食量,本文从青贮技术和氨化技术两方面详细分析了粗饲料的加工调制方法,以供参考。 相似文献
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采用随机区组试验,研究三种不同的玉米秸秆加工调制方法对肉牛生产的影响。结果表明,"三化"复合处理方法可明显改善秸秆纤维结构,提高秸秆的可消化率、营养价值和经济效益。 相似文献
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1秸秆利用的营养工程可发酵氮源、可发酵能源、过瘤胃蛋白质、矿物质元素对瘤胃微生物和宿主动物本身都是必不可少的,但秸秆中这些成分的含量很低,所以对于大量采食秸秆的反刍动物而言,严重影响了其生理功能的发挥,降低了其对秸秆的采食和消化。要想提高秸秆饲用的效果,需将粗饲料的加工调制与营养调控型补饲结合起来,进行整体调控。就技术而言,不仅要对秸秆的加工调制等单项技术进行研究突破,更要 相似文献
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提高反刍动物的饲料转化效率 总被引：5，自引：0，他引：5
由于反刍动物的消化生理特点及研究水平所限，目前反刍动物对饲料能量和蛋白的转化效率较低，实际上并不节约粮食。为了开发利用丰富的粗饲料资源，应用现代技术充分挖掘反刍动物特有对纤维素和非蛋白氮的转化潜力；减少饲料的损失及其提高精饲料的转化效率。使它的生产成本接近或低于猪鸡的水平，使反刍动物的产品具有更大竞争力，真正成为高效节粮型畜牧业,这是至今国内外动物营养学家的研究方向和努力奋斗的目标。1 提高碳水化合物的消化率11 提高纤维素的消化率111 体外加工技术 秸杆的加工调制方法有物理处理方法、化学处理方… 相似文献
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《中国草食动物科学》2015,(1)
为了探索甘肃省甘南牧区秸秆饲料最合理的调制方法,尽可能提高秸秆饲料的营养利用价值,针对燕麦草和青稞秸秆两种甘南州利用率不高但又广泛存在的秸秆资源,采用青贮、微贮和氨化等不同的加工方式,研究不同加工方式下秸秆饲料的营养价值变化。结果表明:采用微生物饲料包装袋封装的青贮、氨化和微贮秸秆饲料均有较好的适口性。青贮、氨化和微贮均可提高饲料的粗蛋白含量和饲料的营养利用价值。而采用微生物饲料包装袋封存所加工的秸秆饲料使得加工过程简易化,后续运输饲喂方便化,值得在甘南牧区大力推广。 相似文献
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提高秸秆饲用价值的方法主要从三个方面,一是改善适口注、增加容重,提高反刍动物对秸秆的采食量. 相似文献
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复合酶制剂-秸秆分解剂的应用研究 总被引：2，自引：0，他引：2
酶制剂作为新一代饲料添加剂在畜牧业中的应用越来越普遍。人们根据酶能促进蛋白质、脂肪、淀粉、粗纤维分解的作用,深入研究找到一种能补充瘤胃微生物消化能力的物质—外源性酶制剂,来提高饲料利用率和改善奶牛生产性能。为了验证和推广酶制剂产品,本试验研究了在秸秆中添加酶制剂对泌乳奶牛生产性能的影响。结果表明,添加酶制剂后,改善了饲料的适口性,提高了奶牛的产奶量、乳脂率、乳蛋白和乳糖含量,并提高了干物质的消化率。尤以复合酶制剂效果显著,产奶量提高9.62%,差异显著（P〈0.05）,乳脂率提高9.3%差异极显著（P〈0.01）,乳蛋白提高8.82%,差异极显著（P〈0.01）。 相似文献
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本试验应用EM发酵玉米秸秆和青贮玉米秸秆饲喂奶牛,以观察两种方法处理的玉米秸秆对奶牛生产性能及经济效益的影响效果。结果表明,用EM发酵的玉米秸秆饲喂奶牛较青贮玉米秸秆饲喂奶牛,每天每头奶牛采食量提高1.03%,平均产奶量提高2.02%,经济效益提高0.13元;EM原液发酵的玉米秸秆和青贮玉米秸秆1∶1混合饲喂奶牛,每天每头奶牛采食量、平均产奶量、经济效益分别比饲喂青贮玉米秸秆的奶牛提高2.85%、2.99%和1.15元。 相似文献
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选取沧州奶牛养殖小区体重、产奶量、胎次、泌乳期相近的荷斯坦奶牛40头,随机分为4组,对照组日粮组成为秸秆加精料,试验组添加不同水平苜蓿干草,分析对奶牛生产性能及经济效益的影响。结果表明,试验组与对照组干物质采食量差异显著（P＜0.05）,试验组产奶量显著提高,差异极显著（P＜0.01）;乳脂率有所降低,差异不显著（P＞0.05）;乳蛋白、非脂乳固形物极显著提高（P＜0.01）;体细胞数显著下降（P＜0.05）。添加苜蓿使牛奶品质得到明显改善。经济效益分析结果表明,日粮中添加苜蓿能显著提高奶牛养殖业的整体效益。 相似文献
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我国农作物秸秆资源丰富.采用正确有效的处理方法,可有效提高农作物秸秆的营养价值.生物处理法可提高低质量纤维作物残留物的饲料价值,是调制农作物秸秆的最优选择.利用不同生物菌对农作物秸秆进行生物发酵可破坏木质纤维素复合物,释放游离纤维素,提高饲用价值.文章综述农作物秸秆的生物发酵机理、发酵方式,营养物质、有效降解率、消化率... 相似文献
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E L Miller 《The Veterinary record》1979,105(21):485-489
Methods of determining protein requirements are reviewed and recent proposals of the Agricultural Research Council working party on nutrient requirements of ruminants outlined. Needs of the rumen microorganisms for degradable nitrogen to achieve optimum rumen digestion of feed are predicted. The extent to which milk production and live-weight gain can be sustained by microbial protein alone is estimated. Higher milk yields and rates of growth require dietary protein that escapes degradation in the rumen but is digested in the small intestine. Small changes in degradability of dietary protein are predicted to have a large effect on the dietary crude protein requirement. Although there is still inadequate data for precise prediction, the concepts of the metabolic approach have been valuable in understanding those physiological situations where protein is most likely to be limiting, where use of protected proteins and urea might be most appropriate, in the planning of critical experiments and in the design of new methods of feeding or management of ruminants. 相似文献
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针对奶牛日粮营养不平衡,导致产奶量低、乳脂率低,经济效益低的生产状况,本试验随机选择4胎、5胎、6胎泌乳期牛10头,分试验组与对照组,各试验牛按日产奶量饲喂不等量精料补充料、玉米秸与稻秸按2:1混合的粗饲料、尿素基础饲粮。试验组饲粮按产奶量分等添加微量元素添加剂,试验期试验组奶料比为3.25,对照组为2.9,试验组增加0.34kg(P<0.05)。试验期产奶量按4.0%标准乳计算,试验组日产奶量高于对照组4.31kg(P<0.05)。按每kg增重折合鲜奶8.0kg校正体重后标准乳计算,试验组日产奶量高于对组4.36kg(P<0.01)。乳脂、乳钙、乳蛋白质(2.29 乳脂率×0.33计算),试验组比对照组分别提高0.32%、0.10%、0.03%(P<0.05)。添加微量元素的试验组,头均日产标准奶24.12kg,对照组19.8kg(P<0.05),按kg鲜奶1.80元计算,头、日产奶分别收入43.42元、35.62元(P<0.05)。头均日耗饲料的实际价格试验组9.15元、对照组7.82元(P<0.01),试验组比对组多增收6.46元(P<0.05),经济效益显著。 相似文献
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Fish meal as a protein supplement in ruminant diets: a review 总被引：1，自引：0，他引：1
Fish meal (FM) as a protein supplement in ruminant diets is presented to illustrate production responses to FM supplementation and to explain the possible factors that may affect the magnitude of these responses. Positive responses are consistently detected when FM is fed to nonruminants, but the responses when fed to ruminants have lacked consistency. Research indicates that ruminal protein degradation of FM is affected by processing factors including type and freshness of fish, addition of preservatives, stabilization of fat, type of dryer used, temperature and duration of heating, and the amount of fish solubles added back to the meal. Performance data published in the last two decades have been categorized into body weight gain and milk yield and composition. Fish meal was more effective in improving body weight gain in young than in finishing ruminants and in males than in females or castrated males. Daily gains and feed efficiencies were higher when FM supplemented medium- or poor-quality silages than when it was added to high-quality silages. No significant advantage was found for replacing protein sources that were highly ruminally degradable with FM in high-corn diets fed to growing ruminants. Milk yield and milk protein concentration were improved by FM supplementation of low-concentrate diets fed to cows in early lactation. However, milk fat percentage was negatively affected by FM supplementation. Reproduction data indicated that body gain and conception rates of high-producing cows were improved by supplementing their diets with FM during early lactation. Results suggest a significant advantage of FM supplementation to ruminant diets if the physiological status of the animal and the quality of the dietary ingredients are taken into account. 相似文献
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复合草颗粒生产及饲喂奶牛试验 总被引：3，自引：0，他引：3
通过刈割-干燥-粉碎-配制-制粒程序将紫花苜蓿(Medicago sativa)鲜草加工成理想的高附加值商品--复合草颗粒,同时采用随机编号、分组试验法,替代2.5、2.0 kg精饲料饲喂奶牛,测定替代量与产奶量、草料消耗成本之间的关系.结果表明,复合草颗粒是一种体积小,便于运输、贮藏,使用方便,适口性好,营养价值高的... 相似文献
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D.L De Brabander P.M Ghekiere J.V Aerts F.X Buysse R.J Moermans 《Livestock Production Science》1982,9(4):457-469
The ability of 6 energy systems for accurate animal performance prediction was studied by means of 992 individual results from 40 feed intake trials with dairy cows. The systems are: starch equivalent system (SE), net energy fat system for ruminants (EFr), feed unit for milk production — The Netherlands and Belgium (VEM), feed unit for milk production — France (UFL), metabolizable energy system (ME), net energy lactating cows (NE1).The results demonstrate that the more recent systems as VEM, UFL, ME and NE1 are better than the SE system. The EFr system is more accurate than the SE system, but seems less accurate than the others. For all systems, except for UFL, recorded performances were on an average lower than predicted. In the UFL system, energy value of roughages seems to be underestimated.Accuracy of the systems decreases when the level of over- or underfeeding increases, which suggests that standards for body weight change may be improved. 相似文献