Whole-plant Corn Silage Quality Treated with Mixed Acids and its Effect on Sheep Growth Performance

In order to explore different concentrations of mixed acids in improving quality of whole-plant corn silage and their effects on growth performance of Dorper×Han F1 sheep.4 levels of 45% formic acid,45% propionic acid and 10% sodium propionate were mixed,and 0(control),0.3%,0.6% and 1% were added to 4 groups of ripening period whole-plant corn.The results showed that compared with control group,the experimental groups could significantly decrease the proportion of AA/PA in silage (P<0.05);0.3% and 0.6% groups had the better effects.Based on the result of CNCPS,0.6% group significantly improved the PB₃ component (P<0.05),reduced the CC component (P>0.05),and improved the quality of silage.Compared with control group,the experimental groups effectively inhibited the mold and yeast reproduction,improved the aerobic stability of silage.The feeding trial results showed that ADG and F/G of sheep in experimental groups were better than control group,and F/G of both 0.6% and 1% groups were significantly better than that in control group (P<0.05).In conclusion,treatment of mixed acids could improve the quality of whole-plant corn silage,and silage treated with 0.6% levels of mixed acids could significantly improve the growth performance of Dorper×Han F1 sheep.     

茉莉酸甲酯和磷酸氢二钾诱导柱花草对炭疽病的抗性

探究茉莉酸甲酯（Methyl Jasmonate,MeJA）和磷酸氢二钾（K2HPO4）诱导柱花草对炭疽病的抵抗作用。结果表明,二者浓度分别为0.001~0.1 mgmL-1和10~50 mmolL-1时,病情指数均显著降低（P0.05）,最佳诱导浓度分别是0.001 mgmL-1和30 mmolL-1,诱导效果分别是64.84 %和54.40 %。0.001 mgmL-1 MeJA处理组的过氧化物酶（POD）及多酚氧化酶（PPO）活性在48 h达到最大值,显著高于对照组。30 mmolL-1 K2HPO4处理组的POD与PPO活性分别在48和24 h达到最大值,显著高于对照组。两种诱抗剂处理的POD和PPO活性在接种早期增加了柱花草对炭疽菌的侵染的抵御能力,进而提高植株的抗病性。30 mmolL-1 K2HPO4处理组的过氧化氢酶（CAT）活性在48~72 h内上升,显著高于对照组,而0.001 mgmL-1 MeJA处理组的CAT活性除72 h显著低于对照组,其他时间点与对照组相差不大。说明在诱导柱花草抗病性方面,两种诱导抗性剂处理的诱抗效果与POD、PPO和CAT的酶活性的诱导的时间及程度有关。     

狐多样枸椽酸杆菌的分离鉴定

从陕西省某狐病死狐实质器官分离到两株β溶血的革兰氏阴性（G^-)杆菌，经鉴定多样枸椽酸杆（Citrobacter diversus)，致病性试验和药敏试验结果表明，经胰蛋白酶作用的分离菌的肉汤培养物对小白鼠致病性；分离菌对氯霉素、痢特灵、卡那霉素等敏感，对青霉素、先锋霉素、红霉素等不敏感。     

王台王浆的市场前景和销售

<正>1王台王浆的市场前景王浆的作用在民间一直流传,俄国亚历山大大帝的记录、意大利马可波罗的游记、《圣经》、《古兰经》和《犹太教法典》都有王浆作用的描述。在澳大利亚、德国、英国、古埃及等国历史上也有用王浆防治疾病的传说。我国在清朝初期就已应用,当时称王浆为"蜜尖",是朝廷贡品中的上品,专供皇帝食用。     

GSN0对E.tenella内LDH、G-6-PD、ACO和SOD活性的影响

亚硝基谷胱甘肽(GSNO)对鸡柔嫩艾美耳球虫(E.tenella)卵囊的孢子生殖具有不可逆地抑制作用,但其作用机理尚不清楚.本研究采用聚丙烯酰胺凝胶电泳来分析GSNO对E.tenella卵囊内与糖代谢有关的乳酸脱氢酶(LDH)、葡萄糖-6-磷酸脱氢酶(G-6-PD)、乌头酸酶(ACO)以及GSNO对卵囊内与抗氧化有关的超氧化物歧化酶(SOD)活性的影响,电泳后经特异染色显示酶活性.结果表明:GSNO处理的未孢子化与孢子化卵囊中均有LDH、G-6-PD、ACO及SOD活性,这提示外源性NO对球虫孢子生殖的抑制并没有灭活卵囊中LDH、G-6-PD、ACO和SOD的活性或NO对这些酶的作用是可逆的.     

耕牛脱膊的中西医结合疗法

耕牛脱膊又名吊膀,是贵州耕牛的一种常见病,多因雨天放牧,坡道拥挤滑跌,或转弯过急,拉套过猛,道路泥泞,凹凸不平,负重过量,翻车轧压、闪、滑、扭、挫等致使肩部股肉剧伸,筋脉受损,肩部上端下移,健患两只对比,患肢肩部凹陷,健肢肩部凸起。患肢不敢负重,昂头点跛,严惩时,用三条腿走路,以致停牧、停役,耽误生产,影响健康,而且要专人护理,误工、停产,造成经济损失。     

作物酸害及防治技术探讨

作物酸害是指因土壤酸性而引起的植株生育障碍.以大麦为例介绍了作物酸害的症状、发生条件、诊断方法及防治措施.     

酸马奶的食疗价值

酸马奶俗称马奶酒,是我国蒙古族和哈萨克族等少数民族地区著名的传统乳制品。酸马奶以新鲜马奶为原料,经过乳酸菌和嗜酸酵母菌发酵而制成。酸马奶呈乳白色或稍带黄色均匀的悬浮状液体,无杂质和凝块,酸度为70～120(°T),酒精度为1.0～     

狐狸几种常发病的综合防治措施

<正>1口腔疾病防治:用0.1%高锰酸钾溶液冲洗口腔。重症且有感染者,可用青霉素或链霉素治疗,每天2次,每次20～40万单位即可。饲养人员要随时观察狐群动态,注意保持笼舍完好,以防狐被咬伤或刺伤。