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贵州高原草地试验站成立20年了.人们几乎淡忘了这个值得纪念的日子.还是中国草学会名誉理事长洪绂曾教授的创意,借中国草学会"中国(南方)草地畜牧业高层论坛"的机会,组织一次纪念活动,借以提倡农业科技人员深入基层的学风. 相似文献
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光明日报2003年6月9日的网页上,有这样一个标题:《贺兰山的岩羊多得使人愁》,是该报记者庄电一的一则通讯,令人关注。 相似文献
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草业琐谈之四--胡耀邦的草地农业思想 总被引:1,自引:1,他引:0
"种草种树,发展畜牧,改造山河,治穷致富."这是前中国共产党总书记胡耀邦同志视察甘肃工作时的题词.时在改革开放初期的1983年.当时他就敏锐地指出,甘肃发展农业生产要改变"以粮为纲"的做法,要"反弹琵琶",念好"草木经",把改善生态环境作为战略任务. 相似文献
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草业琐谈之三十一第20届国际草地大会杂记 总被引:1,自引:1,他引:0
我参加世界草地/草原大会的次数寥寥可数.第1次是1985年,在日本京都参加第15届国际草地大会(International Grassland Congress,简称IGC).那是中国草原学会组团前往,我作为主管外事的副理事长,由农业部资助出席这次会议.第2次是1997年在加拿大萨城举行的第18届国际草地大会(IGC),受大会委托,由我作大会主旨发言.第3次是1999年在澳大利亚汤斯威尔举行的第6届国际草原大会(International Rangeland Congress,简称IRC).那次大会的组委会一再来信邀请,当时我正在北京出差,委托南志标教授代为回信说不能出席,并强调这是最后的回答(the final answer),但还是在开会的前一天,收到词意恳切的邀请电报,同时发来了公务舱机票.再不去就有失礼貌了,于是我在开会的当天赶到汤斯威尔,会议已经开始,我被从机场直接送上主席台.原来会议规定每个大洲要1位代表,不能缺席.而我是作为亚洲的代表被邀请的.这些代表一排站在台上,与大家见面,然后接着就是大会发言.第4次参加这类会议,就是这次在爱尔兰举行的第20届国际草地大会(IRC). 相似文献
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赵庆儒同志(1928-2001年)离开我们已经6个年头了.我初次会见庆儒同志是1982年10月,在开中国畜牧兽医学会第五次全国会员代表大会的时候. 我管他叫大厅长,是因为他管事管得宽.作为农业厅长,他不是传统的那种"以粮为纲"的农业厅长.他还管草地、畜牧、研发、培训.他是"大农业"的厅长. 相似文献
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自从1950年来到西北,胡杨就是我的老相识了.胡杨的坚韧和壮美令人折服.胡杨(还有牦牛,这里暂且不说)是我心中的图腾,我对它顶礼膜拜. 相似文献
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20 0 1年 6月初 ,我随着中国工程院考察团访问宁夏回族自治区。当时在传统灌溉农业区 ,看到已经有若干农户 ,他们几家联合起来 ,有人专管买牛 ,有人专管肥育 ,有人专管饲料 ,有人专管屠宰销售 ,自发地连成一串 ,俨然这是一个肉牛生产线。这个肉牛生产线依托于自发组成的利益共同体 ,称为某个公司 ,它的收益比传统的“以粮为纲”农业生产高出 3~ 6倍 ,效益显著 ,运作得红红火火。产品分割包装 ,远销郑州、上海、武汉 ,甚至中东一些阿拉伯国家。因为他们的“清真”金字招牌 ,具有面向广大穆斯林地区的独到优势。这里的基本道理是把草地农业系… 相似文献
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笔者从事草业科学半个多世纪 ,于今已进入耄耋之年。回顾以往 ,细细算来 ,毕生时光用于专业者不过十之一二 ,而这十之一二中用之得当 ,略见成效者 ,又只十之一二。现在回顾既往 ,深感空疏惶恐 ,愧对大好时代 ,也愧对我业内同仁。先贤华罗庚先生曾经有一句名言 ,使我震撼 ,多年萦绕心中 ,不能平静。他说作为一个科学家“树老忌空 ,人老忌松”。检查自己 ,既“空”又“松” ,走上了学术的死胡同。我在此长久地、难以自制的震撼之中度过了我的从业 50周年 ,1 998年。当时写了一首七律 ,以自责、自勉。从业五十周年感怀蹀躞颠踬五十年 ,恨将十九… 相似文献
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想谈谈草业科学源头的故事.这不仅有趣,也有利于了解草业科学航程的时空坐标,还将有助于对草业科学的全面了解并判断它的发展趋向. 自从有了人类的渔猎活动,草业生产的素材就开始积累.这些素材,在不同的历史时期,不同的生态区域,不断累积和发展,逐渐形成了自己的生产特征,也就连带出现了相应的科学内涵. 相似文献
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固态发酵蛋白饲料工艺生产线的研究 总被引:4,自引:0,他引:4
应用固态发酵技术生产蛋白饲料、单细胞蛋白(SCP)和菌体蛋白(MBP),不仅可以提供大量优质的饲料蛋白源,而且还能开发出具特殊功能的饲料添加剂,如活性酵母、活菌制剂、益生素等微生物制品。随着畜牧业的发展,饲料的需求量越来越大。而饲料生产量,尤其是蛋白饲料的不足已经成为全球性问题。面对饲料资源严重短缺的局面,迫切需要开发新的蛋白饲料资源。在蛋白饲料开发利用中,国内外都很重视单细胞蛋白的研究,积极利用作物秸秆生产蛋白饲料,满足饲料业、养殖业的需求,缓解饲料供需矛盾,同时也能解决秸秆焚烧引起的环境污染问题。随着农业生物… 相似文献
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为了研究红三叶新品系(R)的生产性能和营养价值,以岷山红三叶(CK1)和甘红1号红三叶(CK2)为对照,分别测定了3个参试材料初花期的分枝数、株高、鲜草产量、干草产量和粗蛋白(CP)、中性洗涤纤维(NDF)、酸性洗涤纤维(ADF)和粗脂肪(EE)含量。结果表明:不同红三叶材料中,R的分枝数(1 409万个/hm2)、鲜草产量(34.02t/hm2)和干草产量(6.98t/hm2)最高、鲜干比(4.94)最大,CK2的株高最高(83.22cm),分枝数(1 096万个/hm2)、干草产量(4.02t/hm2)和鲜草产量(22.06t/hm2)次之。供试红三叶材料第1次刈割的平均鲜(干)草产量和分枝数显著高于第2次刈割。红三叶材料的EE和N(A)DF含量存在显著差异(P0.05),R的CP(27.39%)含量最高,CK2的EE(2.82%)含量最高,CK1的NDF(43.07%)和ADF(34.03%)含量最低;红三叶材料第1次刈割的CP含量为(28.53%)显著高于第2次刈割(24.65%),而EE、NDF和ADF含量则显著低于第2次。采用灰色关联度模型综合评价3个红三叶材料,结果表明:R的综合性状较好,有待于进行进一步的区域试验和生产试验。 相似文献
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Variance components of sperm production traits (volume in ml, V; concentration in ×106 sperm/ml, CN; sperm production in ×106 sperm, PROD) were estimated in a paternal line of rabbit selected for 25 generations based on daily weight gain (DG, g/day) between 28 and 63 days of age. Features of the marginal posterior distributions for ratios of genetic variance, variance owing to non‐additive plus environmental permanent male effects and variance owing to common litter of birth effects with respect to phenotypic variance are reported. The correlations between sperm production traits and the selection criteria were also estimated. Three sets of two‐trait analyses were performed, involving 12908 records of DG, 2329 ejaculates corresponding to 412 bucks and 14700 animals in pedigree file. The heritabilities (h2) of the semen traits were 0.13 ± 0.05, 0.08 ± 0.04 and 0.07 ± 0.03 for V, CN and PROD, respectively. The permanent environmental effects were lower than the corresponding values of h2 and varied between 0.06 and 0.11. A favourable and moderate genetic correlation was observed between V and DG (0.36 ± 0.34; p > 0: 0.83), together with a non‐favourable and moderate correlation between permanent environmental effects owing to common litter of birth for both traits (?0.35 ± 0.35; p < 0: 0.85). On the other hand, the correlation between male permanent environmental effects for semen traits and DG was moderate and non‐favourable (?0.51 ± 0.29 with p < 0: 0.95 for DG‐CN, and ?0.31 ± 0.37 with p < 0: 0.79 for DG‐PROD). 相似文献
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Fujimoto Y Nakatani N Kubo T Semi Y Yoshida N Nakajima H Iseri T Azuma YT Takeuchi T 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2012,74(1):27-34
Macrophages are essential for controlling the majority of infections, and are mediators of natural immunity. During infection, lipopolysaccharide (LPS) stimulates macrophages to produce pro-inflammatory cytokines. Adenosine and ATP released into the extracellular space by immunological stimuli have been shown to regulate various immune functions. More recently, it has been shown adenosine and ATP have a critical role on the physiological negative feedback mechanism for limitation and termination of tissue-specific and systemic inflammatory responses. It was useful and meaningful to gain information about interaction between LPS, which generates the inflammation, and adenosine and ATP, which terminate the inflammation. We evaluate effects of adenosine and ATP on the production of cytokines related to inflammation in canine macrophage cell line DH82 cells. Adenosine and ATP respectively increased the production of IL-10 without affecting the production of IL-6, TNF-α and IL-12 in DH82 cells. In addition, adenosine and ATP prevented the production of LPS-induced IL-6, TNF-α and IL-12 in DH82 cells. In contrast, adenosine and ATP potentiated LPS-induced IL-10 production in DH82 cells. Moreover, adenosine, but not ATP inhibited LPS-induced expression of TLR4 in DH82 cells. These results suggest that conditions related to increased adenosine and/or ATP may play an important role in the inflammatory reactions. 相似文献
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Genetic relations of yolk proportion and chick weight with production traits in a White Leghorn line 总被引:1,自引:0,他引:1
1. The main purpose of this study was to estimate genetic correlations between yolk proportion, chick weight and production traits using an animal model. 2. Direct-direct genetic correlations were estimated between yolk proportion and age at first egg (-0.34), body weight at 20 (0.10), 40 (0.58) and 60 (0.52) weeks of age, egg number (0.56), egg mass (0.59), feed intake (0.64) and feed conversion (-0.25). 3. Maternal-direct genetic correlations were estimated between chick weight and age at first egg (0.40), body weight at 20 (0.57), 40 (0.66) and 60 (0.56) weeks of age, egg number (-0.50), egg mass (0.21), feed intake (0.45) and feed conversion (0.17), respectively. 4. In conclusion, the results suggest that selection on a higher yolk proportion would not have any unfavourable effects on egg production. Maternal-direct genetic correlations between chick weight and production traits resembled direct-direct genetic correlations between egg weight and production traits found in other studies. 相似文献