桉树间作豆科牧草适应性筛选试验

研究13种豆科牧草与桉树(Eucalyptus spp.)间作的适应性筛选.结果表明:产草量以GC1581柱花草(Stylosanthes guianensis (Aubl.) Sw. cv. GC1581)最高(376.73 kg/hm²),与其他参试品种间差异极显著(P<0.01);大翼豆(Macroptilium atropurpureum (DC.) Urb.)、有钩柱花草(Stylosanthes hamata (L.) Taub. cv. Verano)和热研12号平托落花生(Arachis pintoi Krapov.et W.C. Greg.)不适合在桉树林间种植;参试品种的抗旱等级相差不大,其中以GC1581柱花草(Stylosanthes guianensis (Aubl.) Sw. cv. GC1581)最耐旱,抗旱等级为1.16;在6龄桉树林间种植豆科牧草,抗病性和抗虫性表现较好.     

怒江干热河谷牧草适应性研究

在云南怒江干热河谷地区对引进的16个禾本科热带牧草进行区域适应性研究,结果表明,参试的 16个牧草品种(品系)均能适应云南怒江干热河谷气候。在产量方面,红象草(Pennisetum purpureum cv. Red)产量最高,干草产量达35 915.00 kg/hm2,极显著高于参试的其他15个牧草品种（P<0.01）。其次是热研8号坚尼草（Panicum maximum cv.Reyan No.8）、热研9号坚尼草(P.maximum CIAT 9)、TD 58坚尼草(P.maximum cv.TD 58)和热研6号珊状臂形草（Brachiaria brizantha cv.Reyan No.6）,以上4个牧草品种产量之间差异不显著（P>0.05）,但显著高于杂交臂形草(B.hybrid)（P<0.05）,极显著高于参试的其他10个牧草品种。红象草、热研8号坚尼草、热研9号坚尼草、TD 58坚尼草、热研6号珊状臂形草等牧草品种饲草产量高、生长迅速、刈割再生能力强、抗旱性强,适宜在干热河谷地区推广种植。     

海南不同地区几种热带牧草的营养价值评定

通过对海南不同地区5种热带人工牧草的粗蛋白、中性洗涤纤维、酸性洗涤纤维成分和饲料相对值(RFV)进行测试,结果表明:不同地区热研1号银合欢Leucana leucephalacv.Reyan No.1、热研2号柱花草Stylosanthes gianensiscv.Reyan No.2、热研4号王草Pennisetum purpureum×P.amerieanumcv.Reyan No.4、热研9号坚尼草Panicum maximumcv.Reyan No.9和黑籽雀稗Paspalum plicatulum的平均粗蛋白含量分别为20.49%、12.39%、9.19%、5.97%和4.71%;NDF含量分别为38.39%、57.84%、68.92%、72.60%和68.36%;ADF的含量分别为33.82%、46.49%、40.22%、44.41%和42.77%,根据粗饲料品质评定指数RFV,几种热带牧草的营养价值由高到低顺序为:热研1号银合欢、热研2号柱花草、黑籽雀稗、热研4号王草和热研9号坚尼草。     

幼龄荔枝园间作热带豆科牧草试验初报

通过在荔枝Litchi chinensis园中间作8个不同豆科牧草品种的3年试验,结果表明:82号柱花草Stylosanthes guianensis cv.GC1480间作鲜草平均产量居最高,达到15 400 kg/hm2;平托落花生Arachis pintol对荔枝的茎围增长促进作用最强,达到11.0 cm,82号柱花草达到了10.7 cm,这些豆科牧草间作对荔枝茎围影响差别不显著;对荔枝冠幅的影响存在显著性差异,有钩柱花草S.hamata cv.Verano冠幅达到5.866 7 m2,其次为爪哇葛藤Pueraria phaseoloides,达到5.733 3 m2;对荔枝花梢影响与55号柱花草S.guianensiscv.CIAT1044呈极显著差异,82号柱花草达到34.6簇,其次是爪哇葛藤,达到30.5簇,均优于55号柱花草.     

不同干燥方法对热带牧草WSC等营养成分的影响

选用热带牧草热研3号俯仰臂形草、热研6号珊状臂形草、热研7号柱花草和热研2号柱花草作为研究对象,采用直接烘干（180℃,10min）、晒干（5d）、晒1d后烘干（180℃,10min）和阴干（15d）4种不同的干燥方法,选择各种牧草的最佳利用期样品（豆科牧草采用开花期、禾本科牧草采用抽穗期）,研究样品营养物质的含量。试验结果表明,从干燥方法来说,牧草的烘干样品粗蛋白（CP）、水溶性碳水化合物（WSC）含量最高,在这4种干燥方法中烘干是最佳的干燥方法,其次是晒后烘干、阴干,晒干最差。     

西双版纳州4种臂形草属牧草引种试验

2005、2006和2007年,分别在景洪市嘎洒镇选取海拔为550、560和846 m的3个试验点,种植新引进的杂交臂形草1号（Brachiaria brizantha Mulato 1)、杂交臂形草2号（B.brizantha Mulato 2)、热研3号俯仰臂形草（B.decumbens cv.Reyan No.3）和热研6号珊状臂形草（B.brizantha cv.Reyan No.6）,进行比较试验。结果表明,4种牧草均有分蘖数多、产量高、生产性能稳定,营养价值高、适口性好、容易刈割,抗病力强、对土壤和气候条件的要求不高、适应性强、容易种植、便于推广等优点。热研3号俯仰臂形草、热研6号珊状臂形草根系发达,利于控制水土流失,也有利于草地防火,一次种植可长期受益,建议在西双版纳州、德宏州和海南省推广种植;杂交臂形草1号和杂交臂形草2号出苗快、孕穗期长、抽穗期晚、茎叶比小、适口性更好、消化利用效率更高,建议重点推广应用。     

4个臂形草品种在闽南地区的生育特性及其相对饲用价值研究

对4个臂形草Brachiaria品种进行3年的生育特性及其品质分析,结果表明,参试品种均可在闽南地区越夏越冬,热研3号和热研6号的开花期均在6月上中旬,杂交臂形草Mulato1与Mulato2开花期比热研6号推迟2个月左右;年均草产量以杂交臂形草Mulato1最高,鲜草产量与热研6号臂形草达极显著水平;营养成分分析结果显示,参试品种分蘖期粗蛋白含量以杂交臂形草Mulato1最高,达9.38%,粗脂肪和钙含量以热研6号最高,相对饲用价值均达100%左右。杂交臂形草Mulato1可作为刈割型牧草在闽南地区推广种植。     

粮饲兼用新品种中原单32号杂交玉米种植试验

中原单32号杂交玉米是由中国农科院原子能利用研究所育成的一种粮饲兼用型新品种,具有适应性强、生育期短、产量高、品质好等特点.自1997年11月通过农业部的牧草品种审定后,已在全国大面积推广种植.为了进一步探索其生产性能和饲用价值,为大面积推广种植提供理论依据,1999年我们引进该品种,测定其在不同施肥条件下与掖单13号、掖单19号玉米的产量(包括秸秆产量)对比试验.     

不同狼尾草属牧草对德州驴的营养价值评定

为评定不同狼尾草属牧草对德州驴的营养价值,本试验选取健康、体重接近的30月龄德州公驴36头,分为6组,每组2个重复,每个重复3头驴,采用移动尼龙袋法对6种狼尾草属牧草进行表观消化率评定.结果 表明:热研4号王草干物质含量显著高于巨菌草和桂闽引象草(P＜0.05);王草粗蛋白质(CP)含量较热研4号王草、紫色象草、桂牧1...     

亚热带高湿地区柱花草品种综合性状评价

2005年,在云南海拔1600 m的亚热带高湿地区,对12个柱花草品种进行了引种试验并用灰色关联分析法对牧草的适应性、地上生物量、茎叶比、青干比、分枝数、株高等指标进行综合评价。结果表明:柱花草是适合亚热带高湿地区栽培的优良草种,其中CIAT11362柱花草综合性能最优,可作为当地的推广品种。此外,R93柱花草、热研13号柱花草、GC1579柱花草、GC1463柱花草、热研5号柱花草、GC1581柱花草的综合性能也显著高于其他品种,应根据当地的不同利用方式选择使用。     

Rhinoscopy, pharyngoscopy, and laryngoscopy.

Rhinoscopy, pharyngoscopy, and laryngoscopy are important procedures to include in the workup of patients with upper airway disorders. They are simple to perform, yield important information, spare the patient from undergoing invasive rhinotomy, and improve client relations when a diagnosis is reached.     

Colonoscopy, proctoscopy, and ileoscopy.

Colonoscopy and proctoscopy are primarily performed on dogs and cats with signs of chronic large bowel or rectal disease, and ileoscopy is typically performed in patients with signs of either large or small bowel disease. These techniques should not be used indiscriminately but only on animals that have a reasonable chance to benefit from their use. Even then, the techniques must be performed carefully so that the results are meaningful instead of misleading. We first consider what does and what does not constitute a reasonable indication for endoscopic examination of the lower intestines. After that, we turn to the specific techniques involved.     

Equine nuclear scintigraphy. Indications, uses, and techniques.

The demand for advanced and correlative imaging methods in equine medicine is growing. Scintigraphy can provide unique information about the physiologic status of an animal that cannot be discerned by other imaging modalities.     

Anticoccidial activity of 8-aminoquinolines, pamaquine, primaquine and several molecular complexes and salts of pamaquine, against Eimeria tenella, E. necatrix, E. acervulina, E. maxima, and E. brunetti in battery experiments.

Pamaquine and primaquine, the well known antimalarial 8-aminoquinolines, have not been reported for their anticoccidial activity. A series of battery experiments was conducted to investigate their activity against a laboratory strain of Eimeria tenella, E. necatrix, E. acervulina, E. maxima, or E. brunetti and revealed that both drugs were effective against E. tenella and E. necatrix, but not against the other three species. Pamaquine suppressed the symptoms of E. tenella induced coccidiosis at concentrations above 125 ppm in feed and primaquine controlled the clinical signs as well at levels above 31.2 ppm. The activity against E. necatrix was observed with pamaquine at 250 ppm and with primaquine at levels above 125 ppm. Pamaquine showed a tendency apparently to reduce body weight gain at 125-500 ppm, whereas primaquine showed the same tendency at 500 ppm. In a concomitantly conducted experiment, this adverse effect of pamaquine was averted in its molecular complexes with benzophenone, nitropyrazole, dinitrobenzoic acids and quinoline, and in its salts of sulfate or zinc chloride, and yet these compounds retained the same anticoccidial activity as of pamaquine. This suggests that these compounds had the broadened safety margin. Judging from their susceptibility to these compounds. E. tenella and E. necatrix will have similar metabolic functions to those of blood cell parasitizing protozoa like plasmodia and prioplasma, which are easily suppressed by this class of compound.