The training course on livestock production diseases control is lectured mainly on biosecurity epidemic disease prevention and treatment of dairy cattle in livestock farms , fine quality dairy production , biosecurity measures for prevention of dairy udder diseases , mastitis , artificial insemination technology , abomasums displacement , caesarean section technology on the standing cows , dairy reproduction failures , etc . the training course is instructed by the combination of lectures with practices 动物疾病防治培训班讲授内容包括牧场奶牛的生物安全疫病防治优质牛奶生产预防奶牛乳房疾病的生物安全措施奶牛的乳房炎牛人工授精技术皱胃移位站立牛的剖腹产术奶牛繁殖障碍等。培训班采用讲授与实习相结合的方法。
The research on the condition of kid ' s suckling indicates that the highest milk - dotting activity ( 26108su / g ) was obtained for the whole suckling section , whereas proteolytic activity were no significant different between the whole suckling and random section ( p > 0 . 05 ) , but proteolytic activity ( 1925u / g ) was highest for the complete grass - feeding , which demonstrated suckling could stimulate the continuous secretion of chymosin in the abomasum 羔羊哺乳状况研究表明，全哺乳组凝乳活性最高( 26108su g ) ，蛋白水解活性与随机哺乳组无明显差别( p 0 . 05 ) ，而全喂草料组蛋白水解活性最高( 1925u g ) ，这表明哺乳能够刺激皱胃中凝乳酶的持续分泌。
To clarify epidemiologic characteristic of abomasum diseases in dairy cow of daqing regions , 14210 dairy cows from zhaoyuan county , lindian county , dumeng county and honggang district of daqing were investigated to identify status of abomasitis , abomasum impaction , abomasum ulcer and abomasum displacement 摘要为了阐明奶牛真胃疾病在大庆周边地区的流行病学特点，对肇源县、林甸县、杜蒙县、大庆红岗区等地的14210头奶牛的四种真胃疾病（真可炎、真胃阻塞、真胃溃疡和真胃变位）进行了调查。
This experiment is to probe the factors , such as the effect of the kid ' s suckling , the butchering age and the ay of the abomasums treatment on the chymosin activity ; the activation of the prochymosin ; the purification and separation of chymosin and the characterization of chymosin and pepsin , using cuan zhong dairy kid ' s abomasums as material , which would provide the theoretic base for the exploitation of the kid chymosin and its application to the cheese production 本实验以关中奶山羊皱胃为原料，对羔羊哺乳状况、屠宰年龄、皱胃处理方式和不同提取方法对凝乳酶活性的影响，凝乳酶原的激活，凝乳酶纯化与分离以及凝乳酶和胃蛋白酶特性进行了系统的研究，为羔羊凝乳酶开发以及在干酪生产中的应用提供理论基础。
