引言由于植物成分复杂,影响提取因素较多,因此重视植物生物活性成分的提取工艺等基础性研究是当前研究的重点[1].再说,有些添加剂是有毒性的,为达到安全使用的目的,需要进行安全毒理学评价.本实验通过观察甘草粗提物对小鼠的毒性作用,进而推断其对羊的毒性作用,为开发其作为饲料添加剂提供依据.
引言研究乳酸菌和酵母菌复合微生态制剂(乳酸菌含量为1×108CFU/mL;酵母菌含量为8×107CFU/mL)对断奶仔猪血清免疫指标的影响,旨在研发安全、高效、环保的复合微生态制剂并在养殖业中广泛应用.材料和方法采用240头10kg左右的断奶仔猪(28±2d),随机分成4个处理组,每个处理组6个重复,每个重复10头猪.Ⅰ、Ⅱ、Ⅲ和Ⅳ组分别在饲粮中每天每头仔猪添加0、50、100和150mL乳酸菌和
In eukaryotic cells, gene expression is regulated by Epigenetic mechanisms such as DNA and histone modifications.The balance between the opposing activities of histone acetyltransferases (HATs) and hi
As the agent of the rice kernel smut, Neovossia horrida is the most destructive fungal pathogen of rice (Oryza sativa L.) that causes great yield losses in all rice-growing regions of the world.N.horr
In order to confirm the physiological race type of Phytophthora capsici collected from different regions, we utilized the morphological and molecular methods to identify the seven strains which were c
Sunflower White Mold caused by Sclerotinia sclerotiorum (Lib) de Bary (S.sclerotiorum) is a devastate disease on sunflower and causes dramatically yield loss all over the world.In 2014, the diseased s
In 2012 to 2013 a brown leaf spot disease had broken out in a Chinese kiwifruit cultivar ‘Hongyang’ in Sichuan Province, which leading to premature defoliation and lower yield.To elucidate the causati
Sisal stem rot disease caused by Aspergillus niger van Teigh niger has been one of the most devasting diseases in history.Now, sisal stem rot disease still poses a potential threat to sisal production
Occurrence of rice false smut disease is increasing worldwide, but the underlying mechanism of rice-Ustilaginoidea virens interaction is still unclear.We isolated the total RNA from U.virens-infected
Evolution of virulence in plant pathogens is still poorly understood but the knowledge is important for the effective use of plant resistance and sustainable disease management.Spatial distributions o