2014年大宗饲料原料行情回顾与展望

<正>1玉米行情走势取决于国家储备2014年玉米行情走势回顾2013年国内玉米丰产,达到2.11亿吨,导致2014年年初玉米期末库存快速增加。国家为了保障农民利益,除了继续实施临储政策外,还启动了北粮南运运费补贴政策。运费补贴执行从2013年12月份持续执行至2014年6月末。这两项政策的出台,缓解了种粮区农民售粮难问题,但巨大的临储收购量,造成国内流通粮偏紧,为后期阶段性上     

奶山羊舍饲规模养殖生产经营管理重点环节探析

奶山羊养殖场的管理是一项系统工程,含盖生产管理、经营管理、人员管理等诸多方面,是一项专业性强、管理细致的行业。经营管理的好坏,往往受羊只品种、自然资源、气候条件、工人素质和市场等诸多因素影响。尤其是在舍饲规模养殖情况下,管理具有一定难度。所以,各地应根据当地的具体情况综合分析,选择切合实际的方式方法与规模、切忌盲目求大。国内部分羊场之所以失败,大多是对该行业了解不足、养殖条件不到位、管理能力跟不上,仓促上马而形成的。所以,要办好羊场,不仅要具备相应的条件,而且要抓好各个生产环节。     

对桑树粗皮病的初步研究

在缺管的老桑园和零星久旱桑园里发现桑树粗皮病,为查明病因,采取有效防治方法,作者经３年调查研究,组织学生观察,嫁接传染病实验,药剂防治以及土壤、植物体营养元素分析,田间缺素症实验表明,该病为硼素缺乏所引起的生理病害。１症状观察１．１苗期当嫁接苗长到３０ｃｍ以上,嫁接口以上木质化充实,枝干出现黄色至黄褐色隆起疤疥状病斑。１．２成林树病株自新梢木质化部分,树干均可感染发病,皮孔增大,隆起明显,入秋后病枝条造成表皮粗糙,产生黄褐色至紫褐色不定形颗粒体;不论春代或夏伐后,发芽都不良,枝条停止生长,梢部节…     

单细胞蛋白质在家禽营养中的应用

生产和利用单细胞蛋白质,是世界各国为畜禽提供廉价蛋白质源的多种努力之一。单细胞蛋白质也一直为若干阿拉伯国家用以解决传统蛋白质源短缺和成本高昂的问题。据估计,如今单细胞蛋白质在阿拉伯国家的年产量约为１７万吨,其中大部分都是用石油制取的,仅极小一部分用其...     

香豆粉的饲用价值

香豆粉是豆科植物香豆子提胶后的副产物,主要组分为种子的子叶部分。香豆子原产西非,学名葫芦巴（Trigonella foenum-graecum）。相传早在汉代已传入我国,香豆子适应性较广,在我国长江以北大部地区都有种植。 香豆子种子中分离出的内胚乳,称之为香豆胶,是90年代一种新兴的水溶性植物胶,被广泛     

Parasite control methods used by horse owners: factors predisposing to the development of anthelmintic resistance in nematodes

One hundred and fifty horse owners, primarily private owners and riding schools, replied to a questionnaire concerning the practices they used to control parasites. Twenty-seven had experienced a parasite problem. Faecal samples from 188 horses selected at random showed that worm control practices were generally successful; however, many owners were not following recommendations for slowing the development of resistant parasites. In 1996, 86 per cent of the owners were using either three or two classes of anthelmintic a year, and they used a median of six doses with a range from one to 11. Approximately half the owners, more commonly owners of up to five horses, picked up their horses' faeces at least once a week, but these owners also used more doses of anthelmintic a year than owners who did not pick up faeces. One-third of the owners manually removed Gasterophilus species eggs from the horses' hairs, but 94 per cent of them also used ivermectin. Many owners treated specifically for Anoplocephala species, cyathostome larvae and Gasterophilus species, and these owners were the most likely to use three classes of anthelmintic a year. One-hundred-and-seven owners replied to a second questionnaire asking for information about the factors that influenced their anthelmintic control practices. Many owners, particularly private owners, were not influenced by the cost of the anthelmintic. For the timing and frequency of treatment, and the choice of drug, owners were most influenced by advertisements, magazine articles and veterinary surgeons. In two magazines aimed at horse owners, the brands of drugs most frequently advertised were the brands most commonly used by the owners, and articles in the magazines recommended the use of three classes of drug per year. These results are discussed in relation to their influence on the development of anthelmintic-resistant nematodes.     

米曲霉固态发酵动植物蛋白生产优质蛋白饲料的工艺研究

利用米曲霉固态发酵利用率较低的动植物蛋白原料．生产优质的复合蛋白饲料。采用正交试验及单因素方差分析试验,以可溶性蛋白质含量、氨基氮含量及酶活为考察指标进行综合评定．对基础底物的配比和发酵条件进行优化。试验表明,最佳原料配方为：血粉30％、棉粕26％、羽毛粉4％、麸皮35％、玉米粉5％;硫酸铵最适添加量为1％;最佳发酵条件：初始pH为6,固液比为1．0：1．0,接种量为2％．250mL的三角瓶装量为20g,发酵时间为60h。[结论]发酵产品的可溶性蛋白含量、氨基氮含量和粗蛋白质含量比未发酵的产品分别提高82．68％、379．97％和12．91％（P〈0．05）,蛋白酶的最高酶活达到2341．83U,g。     

近37a柴达木盆地沙尘暴的时空变化特征及影响因子分析

利用柴达木盆地11个国家站1981～2017年逐月沙尘暴日数观测资料,采用线性回归、Morlet小波分析、Mann-Kendall(M-K)检验法等方法,对近37a内柴达木盆地沙尘暴的空间分布特征、盆地东西部和柴达木盆地沙尘暴日数时间变化趋势及影响因子进行了研究.结果 表明:①柴达木盆地沙尘暴年平均日数在0.5～ 11...