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L-肉碱对肉猪生长及胴体品质的影响 总被引：3，自引：0，他引：3
Ｌ -肉碱是一种类维生素化合物 ,其化学结构与胆碱相似 ,在动物体内肉碱由赖氨酸、蛋氨酸及维生素等物质合成 ,是脂肪酸穿过线粒体膜进行β -氧化的唯一载体 ,从而可以促进脂肪酸的氧化 ,降低血清胆固醇及甘油三脂的含量 ,还可促进支链氨基酸的氧化再利用。因此在猪饲料中添加肉碱 ,能改善能量、脂肪酸、蛋白质和氨基酸的利用率 ,提高猪的生产性能。Ｂａｕｍｇａｒｔｎｅｒ( 1 997)等认为 ,Ｌ -肉碱可以增加猪体内的脂肪分解 ,减少必需氨基酸的分解 ,具有减少体脂沉积 ,增加瘦肉生长的效果。本试验通过饲养和屠宰测定 ,旨在研究Ｌ -肉碱对肉… 相似文献
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ANTONELLA PUGGIONI RICHARD ARNETT TRACY CLEGG MARK GLYDE EMMA TOBIN HESTER McALLISTER 《Veterinary radiology & ultrasound》2006,47(5):449-452
The aim of this project was to determine the effect of patient position on the L5-L6 mid-laminar distance (MLD). The lumbar area of 22 recently euthanatized dogs of various breeds was radiographed in three positions: lateral recumbency with the spine in neutral position, lateral recumbency with the spine flexed in a kyphotic position, and sternal recumbency with the spine flexed in a kyphotic position. Digital images of the radiographs were analyzed using a computer program that allowed measurement of the MLD between L5-L6 in the three positions. The L5 and L6 MLD was significantly larger in sternal recumbency with the spine flexed (142.3 units) than both in lateral recumbency with the spine flexed (138.7 units; P= 0.001) and lateral recumbency with the spine in the neutral position (135.8 units; P < or = 0.001). The MLD in lateral recumbency with the spine flexed was significantly larger than in lateral recumbency with the spine in neutral position (P = 0.005). Positioning a dog in sternal recumbency with the spine flexed produces a significantly larger MLD than in lateral recumbency with the spine flexed; this should simplify needle placement when performing a lumbar puncture. 相似文献
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采用单因子试验设计,选用2月龄健康肉兔24只,随机分成4组,饲喂不同的牧草,即每日分别在基础饲粮(50g)中加等量(500g)多花黑麦草、鸭茅、扁穗牛鞭草、菊苣,测定其对肉兔日采食量、日增重和料重比的影响。结果表明,多花黑麦草、鸭茅饲养肉兔的日增重和料重比与扁穗牛鞭草、菊苣相比,提高显著(P<0.05);肉兔对多花黑麦草的采食量最高(P<0.05);4种牧草饲养肉兔的腹泻指数差异不显著(P>0.05),且均是正常水平。结论为4种牧草均适合饲喂肉兔,其中,多花黑麦草饲养效果最佳,鸭茅次之,扁穗牛鞭草、菊苣的饲养效果较低。 相似文献
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《蜜蜂杂志》2015,(11)
油菜(Brassica napus L.)和光叶紫花苕(Vicia sativa L.)为重要蜜源植物。以这2种植物种子为受体,用不同浓度(20 mg/L、40 mg/L、60 mg/L、80 mg/L、100 mg/L)的吡虫啉和(200 mg/L、400 mg/L、600 mg/L、800 mg/L、1000 mg/L)的甲基硫菌灵采取室内培养皿滤纸法胁迫处理,以探讨这2种农药对油菜和光叶紫花苕的化感作用。结果表明,吡虫啉和甲基硫菌灵明显降低了油菜种子活力,抑制幼苗生长;吡虫啉总体上提高了苕子种子活力,促进幼苗生长,而甲基硫菌灵则降低苕子种子活力,抑制幼苗生长。总之,吡虫啉和甲基硫菌灵对上述2种蜜源植物均有强烈的化感作用。 相似文献
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采用室内生物测定方法研究了狼毒根粉碎物和茎叶粉碎物在土壤里腐解过程中对小冠花幼苗生长的影响。结果表明,狼毒根对小冠花幼苗株高、幼苗干重和根干重有抑制作用,且随狼毒根用量增多,其抑制作用增强,对小冠花叶绿素含量影响不明显,只有当用量在5克/盆时与对照差异达到极显著水平,对小冠花细胞质膜透性无显著影响。狼毒根的抑制作用强于茎叶,狼毒的生化他感作用主要是通过根起作用。 相似文献
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Accioly MP Bevilaqua CM Rondon FC de Morais SM Machado LK Almeida CA de Andrade HF Cardoso RP 《Veterinary parasitology》2012,187(1-2):79-84
Visceral leishmaniasis (VL) is a zoonotic disease characterized by infection of mononuclear phagocytes by Leishmania chagasi. The primary vector is Lutzomyia longipalpis and the dog is the main domestic reservoir. The control and current treatment of dogs using synthetic drugs have not shown effectiveness in reducing the incidence of disease in man. In attempt to find new compounds with leishmanicidal action, plant secondary metabolites have been studied in search of treatments of VL. This study aimed to evaluate the leishmanicidal activity of Musa paradisiaca (banana tree) and Spondias mombin (cajazeira) chemical constituents on promastigotes and amastigotes of L. chagasi. Phytochemical analysis by column chromatography was performed on ethanol extracts of two plants and fractions were isolated. Thin layer chromatography was used to compare the fractions and for isolation the substances to be used in vitro tests. The in vitro tests on promastigotes of L. chagasi used the MTT colorimetric method and the method of ELISA in situ was used against amastigotes besides the cytotoxicity in RAW 264.7 cells. Of the eight fractions tested, Sm1 and Sm2 from S. mombin had no action against promastigotes, but had good activity against amastigotes. The fractions Mp1 e Mp4 of M. paradisiaca were very cytotoxic to RAW 264.7 cells. The best result was obtained with the fraction Sm3 from S. mombin with IC(50) of 11.26 μg/ml against promastigotes and amastigotes of 0.27 μg/ml. The fraction Sm3 characterized as tannic acid showed the best results against both forms of Leishmania being a good candidate for evaluation in in vivo tests. 相似文献
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雀麦属13种植物形态遗传多样性研究 总被引：2，自引：0，他引：2
对雀麦属13个种的30个性状做形态遗传多样性分析,结果表明:雀麦属种间存在很大的遗传差异,表现出较高的遗传多样性.变异系数范围7.59%～127.01%,变异系数较大的性状有外稃芒长、穗轴第一节间长、第一颖脉数、叶片长、花药长等.对形态性状做主成分分析,前6个主成分累积贡献率为87.29%,分枝着生小穗数、第一颖脉数、叶舌长、第二颖脉数、外稃宽、外稃芒长、叶片宽、分蘖数、小穗长、穗轴第一节间长、第一颖长、内稃宽、穗节数是造成雀麦属形态差异主要因素.形态性状聚类分析,颖果长单独聚为一类;内稃宽单独聚为一类;内稃长、外稃长、第一颖长聚为一类;穗轴第一节间长、第一颖脉数、外稃芒长聚为一类;其余的聚为一类.对13个种进行聚类分析,无芒雀麦、红雀麦、山地雀麦、杂交雀麦、扁穗雀麦、草甸雀麦、密丛雀麦、疏花雀麦、旱雀麦、杂色雀麦聚为一类;多节雀麦、加利福尼亚雀麦和细枝雀麦各自聚为一类,共四类. 相似文献
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沙拐枣属植物的研究进展 《畜牧与饲料科学》2016,37(12):48-48
沙拐枣属植物（Calligonum L.）作为我国荒漠地区的一种固沙造林先锋树种,具有抗旱、耐高温、耐瘠薄、抗风蚀沙埋、繁殖容易、适应性强、生长迅速、对干旱和流沙具有特殊适应性等特点。从种类分布、繁殖技术、化学成分、抗逆分子生物学及生态特性等方面对沙拐枣属植物的研究进展进行了综述,旨在为沙拐枣的荒漠治理、抗逆机理、基因资源挖掘等研究奠定基础。 相似文献
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A. MANTOVANI R. RESTANI D. SCIARRA† P. SIMONELLA 《The Journal of small animal practice》1961,2(1-4):185-194
Abstract— The authors review the literature on streptococcal infection in the dog. A beta -haemolytic Streptococcus (type L) was isolated from a natural outbreak of a disease whose predominant symptoms were abortion and sterility in bitches. Experimental reproduction of the disease produced in bitches a type that was localized in the genital tract, as well as a more generalized syndrome; in the newborn puppies "fading" with death was seen. The authors conclude that canine Streptococcosis may be a specific disease involving both the genital tract and parenchymatous viscera. Promising results in the prevention of the disease by the use of chloramphenicol were obtained. 相似文献
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Comparison of nutritional and antinutritional traits among different species (Lupinus albus L., Lupinus luteus L., Lupinus angustifolius L.) and varieties of lupin seeds 
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下载免费PDF全文 N. Musco M. I. Cutrignelli S. Calabrò R. Tudisco F. Infascelli R. Grazioli V. Lo Presti F. Gresta B. Chiofalo 《Journal of animal physiology and animal nutrition》2017,101(6):1227-1241
In order to promote the use of lupin in pig nutrition, in this research the nutritional characteristics (i.e. dietary fibre, alkaloid and fatty acid profile) and the in vitro gas production of 12 lupin varieties grown in the Mediterranean basin and belonging to three lupin species (Lupinus albus, Lupinus angustifolius and Lupinus luteus) were assessed. Four varieties of L. albus (Asfer, Lublanc, Lutteur and Multitalia) were grown in South Campania. Three varieties of L. luteus (Dukat, Mister and Taper), three of L. angustifolius (Jindalee, Sonet and Wonga) and two of L. albus (Rosetta and Luxor) were grown in Eastern Sicily. Lupinus albus varieties showed interesting nutritional and dietetic characteristics (i.e. high protein and low fibre content); the lipid fraction, rather elevated, is well represented by monounsaturated fatty acids (544 g/kg), whereas saturated fatty acids (SFAs) are less represented (167 g/kg) and the n‐3/n‐6 ratio (0.510) is the most favourable. Lupinus luteus varieties presented the most remarkable dietetic aspects, in terms of polyunsaturated fatty acid (PUFA) content (569 g/kg), n‐6 PUFA series (490 g/kg), UFA/SFA (5.24) and PUFA/SFA (3.56) ratios and atherogenic (0.059) and thrombogenic (0.100) indices and very low alkaloid content (1.07 mg per 100 g). Lupinus angustifolius varieties showed the least interesting nutritional and dietetic characteristics: low protein and fat content, high fibre level, high SFA amount (248 g/kg) and the lowest favourable nutritional indices (IA: 0.164 and IT: 0.334). Regarding the fermentation process, in L. albus, the tendency to increase the rate of gas production during the early stages of fermentation suggests that the high presence of alkaloids did not affect the in vitro degradability, production of short‐chain fatty acids and fermentation process, probably due to their concentration and/or water solubility. Lupinus angustifolius and L. luteus showed intermediate and slightly worse in vitro fermentation patterns respectively. From a nutritional and dietetic point of view, lupin may represent an interesting alternative to soya bean in pig feeding. 相似文献
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《畜牧兽医学报》1991,(2)
本文研究了六个不同pH梯度;四种人工综合培养基(M_(199),EMEM,F_(10),F_(12));YE_(25)(酵母提取物),CLB_(33)(牛肝汤),RLE_(50)(兔肝提取物);Filde's试剂对离体培养中蒙古马歇尔线虫L_3发育为L_4的影响;比较了次氯酸钠脱鞘和MRF(改良法配制的RFN)85分钟脱鞘效果及对L_3发育为L_4的影响。 较早出现脱皮的培养基为:M_(1(?)) CEE_(50) CBS,pH5.2(脱皮出现于培养后第8天)。L_4出现率较高的培养为:(1)MRF85分钟脱鞘后移入MRF内培养2天;(2)以M_(199)为主配制而成的M_9加谷胱苷肽、Filde's试剂,pH4.5～5,培养8天;(3)M_9加Filde's试剂,pH6,培养40天。L_4的出现率达46.7％。 相似文献
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M. Villet 《African Zoology》2013,48(4):329-332
Although synonymi2ed for many decades, the Linnaean species Platypleura stridula and P. capensis are biologically distinct, differing in their host plant and habitat preferences, geographical distribution and calling songs. There are also morphological differences between the two taxa which parallel the differences in their biology. P. capensis should therefore be accorded specific rank. 相似文献
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本文在2011年6月-10月期间利用田间试验方法研究了洽草、草地早熟禾与草坪重要杂草-早开堇菜的种间竞争季节动态.结果表明：（1）早开堇菜的生物量、分枝数、有性繁殖能力在与两种草坪草竞争中均受到显著抑制,草地早熟禾对其抑制强度高于洽草;（2）在竞争中洽草的生物量、分蘖数显著增加,取得比较明显的竞争优势,草地早熟禾的株高、地上生物量显著升高,但根系以及分蘖能力受到早开堇菜显著抑制;（3）早开堇菜趋于增加地下部分竞争能力,而洽草和草地早熟禾更趋向于增强地上部分的竞争能力. 相似文献
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Evaluation of anthelmintic effects of Trianthema (T.) portulacastrum L. (Aizoaceae) whole plant and Musa (M.) paradisiaca L. (Musaceae) leaves against prevalent gastrointestinal worms of sheep was done that may justify their traditional use in veterinary clinical medicine. In vitro anthelmintic activity of the crude aqueous methanolic extract (CAME) of both the plants was determined using mature female Haemonchus (H.) contortus and their eggs in adult motility assay (AMA) and egg hatch test (EHT), respectively. In vivo anthelmintic activity of crude powder (CP) and CAME in increasing doses (1.0-8.0 g kg(-1)) was determined in sheep naturally infected with mixed species of nematodes using fecal egg count reduction test (FECRT) and larval counts. The study design also included untreated as well as treated controls. Fecal egg count reduction and larval counts from coprocultures were performed pre- and post-treatments to assess the anthelmintic activity of the plants. CAME of T. portulacastrum and M. paradisiaca showed a strong in vitro anthelmintic activity and pronounced inhibitory effects on H. contortus egg hatching as observed through AMA and EHT, respectively. Both plants exhibited dose and time dependent anthelmintic effects on live worms as well as egg hatching. M. paradisiaca (LC(50)=2.13 μg mL(-1)) was found to be more potent than T. portulacastrum (LC(50)=2.41 μg mL(-1)) in EHT. However, in vivo, maximum reduction in eggs per gram (EPG) of faeces was recorded as 85.6% and 80.7% with CAME of T. portulacastrum and M. paradisiaca at 8.0 g kg(-1) on 15th day post-treatment, respectively as compared to that of Levamisole (7.5 mg kg(-1)) that caused 97.0% reduction in EPG. All the species of gastrointestinal nematodes (GINs), i.e. Haemonchus contortus, Trichostronglyus spp., Oesophagostomum columbianum and Trichuris ovis which were prevalent, found susceptible (P<0.01) to the different doses of CP and CAME of both plants. The data showed that both T. portulacastrum and M. paradisiaca possess strong anthelmintic activity in vitro and in vivo, thus, justifying their use in the traditional medicine system of Pakistan. 相似文献