排序方式: 共有19条查询结果,搜索用时 15 毫秒
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双低菜籽粕在饲料中的应用 总被引:2,自引:0,他引:2
双低菜籽粕具有高产优质的特点,其饲用品质优于普通菜籽粕,营养价值与豆粕相当,被广泛应用于饲料。为了更有效开发其对饲料业和养殖业的应用潜力,本文就双低菜籽粕的营养价值和在动物饲用方面进行的一系列的基础性研究作一简要介绍。 相似文献
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畜牧生产中产生的恶臭气体以及粪尿中的氮、磷元素、微量矿物元素等,对空气、土壤和水体造成严重的环境污染,极大地影响人类的生存质量和身体健康。利用日粮营养调控可减少氮和磷的排泄量、减少微量矿物元素的排泄量和降低恶臭的排放量。 相似文献
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Root rot of American ginseng (Panax quinquefolium) caused by Ditylenchus destructor is a novel disease found recently in Beijing area. The effects of three soil treatments (fumigating with chloropicrin, chloropicrin + lvfeng organic manure and nematicide fosthiazate) on the number of rhizospheric nematodes, survived plants, root yield and root rot of 3-year ginseng plant were compared. The effects were also investigated at the second year after treatment. The results indicated that the number of parasitic nematodes in rhizosphere of treated soil reached the peak value in late June to early July as the soil temperature raised in the growing season. Compared with the regular treatment, the number of plant parasitic nematodes was reduced while non-plant parasitic nematodes increased. The number of non-plant parasitic nematodes in the soil treated with chloropicrin + lvfeng organic manure was 2 times than that treated with chloropicrin only. The ratio of non-parasitic to parasitic nematodes of three treatments was higher than the control. Percent of survived plants was 94.8%-96.4% and diseased root was decreased obviously. The control efficacy was more than 89% at the first year after treatment. The survived plants and plot yield of ginseng increased significantly and the control efficacy was around 40% at the second year. The best of the three treatments was by chloropicrin + organic manure. 相似文献
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酪蛋白磷酸肽(CPPs)是含有成簇的磷酸丝氨酰基的生物活性肽,具有结合钙和促进钙吸收的功能。本文主要介绍酪蛋白磷酸肽在钙营养方面的研究利用情况。 相似文献
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通过野外调查和查阅文献,对海南主要含油部位含油量在30%以上的非粮油脂植物资源的种类组成、生活型、地理分布类型、分布状况、取用部位、含油量等进行了分析,并参照建立的非粮生物柴油能源植物评价标准对这些植物进行了筛选。结果表明:海南主要含油部位含油量在30%以上的非粮油脂植物共有62科139属192种,优势科为大戟科(Euphorbiaceae)、樟科(Lauraceae)、番荔枝科(Annonaceae)、葫芦科(Cucurbitaceae)、山茶科(Theaceae);以木本植物为主,占总数的95.3%;地理分布类型以热带成分占优势;地理分布上,主要集中在以三亚市为中心的南部台地平原区和以东方市八所港为中心的西部台地平原区,随海拔升高植物种类逐渐减少;取用部位以种子和种仁为主,其中84种植物的含油量超过40%,并筛选出竹柏(Nageia nagi)、粗榧(Cephalotaxus sinensis)、观光木(Michelia odora)等59种可用于生产生物柴油的植物资源。 相似文献
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日粮蛋白、能量水平对哺乳母猪繁殖性能的影响 总被引:3,自引:0,他引:3
试验选用14头分娩日期相近的杜长大经产母猪,按体重、胎次随机分成2个处理,每个处理7个重复,1头1个重复。在28d的试验期母猪自由采食和饮水。研究饲喂按NRC(1998)配制的高蛋白、高能量水平日粮(蛋白为18.50%和代谢能为14.23MJ/kg)与按NRC(1988)配制的日粮(蛋白为17.10%和代谢能为13.19MJ/kg)对母猪生产性能的影响。分娩当天、28d测定母猪背膘厚度、体重、采食量;分娩当天、21d、28d测定仔猪窝重;21d采取母猪乳样,分析乳固形物、乳蛋白、乳脂成分。结果表明:高水平日粮对母猪采食量和失重有显著影响(P<0.05),对仔猪平均日增重和母猪乳成分没有显著影响(P>0.05)。 相似文献
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