In order to study the different effects of hormones on the impact of buffalo estrus synchronization,320 buffalo,cattle according to rectal examination results were divided into control group and three experimental groups,the experimental group were used to time insemination method(GnRH),PMSG law,PG method for synchronization of estrus.The results showed that,Timing Insemination Act,PG Law and PMSG Law estrus rates were 26.35%,85%,83.75%,pregnancy rate were 21.25%,44% and 42.5%.From the analysis of different reproductive status,young buffalo application PMSG estrus synchronization method worked best.From the state of ovarian development to the same period in the follicular phase of the buffalo estrus best.

The paper analyzed the problems of cattle and cow disease prevention course teaching,indrouced the practice of competence-based teaching mode on cattle and cow disease prevention course,in order to provide references for the course teaching.

Water buffalo are a kind of widely bred herbivores in southern China region,it is an important part in cattle industry.However,due to the impact of traditional customs,the milk process of water buffalo was less than 20%,so the development and utilization prospect of water buffalo milk was enormous.Based on the current situation of Guangxi water buffalo milk production,the nutritional characteristics,resources advances and exploitation of the milk were presented,and the developmental directions and suggestions were put forward.

Corn-cob and corn-bran produced by food industry are cheap raw material,contains much fiber. They can be used for breeding cows after microbial treatment. In the premise of the same feeding management and basic diet,milk yield of cows fed by microbial corn-cob and corn-bran increased by 2.42% than that of cows fed by only conventional silage. Considering the cost of material, we may get more gains of 1.916 yuan per day from one cow. So there was a very considerable economic benefits for a large-scale dairy farm.

The south contain a great deal of farmland with carefree winter,the resources round that makes use of these idle lands makes the rye grass to feed the canned milk cow,It can increase the income of the farmer,and can provide more herding grasses of superior quality for the canned milk cow,the increment canned milk cow produces the amount of milk.This item pass" data publicityexperiment researchdemonstration plantleading the peasant household plantexpansion radiate the big area to plant" etc.measure,the leading peasant household grass farmland round makes the rye grass,receiving to compare the good economic social performance.

试验利用自制的微贮饲料发酵剂(主要含乳酸菌、酵母菌、相关酶制剂等多种益生菌添加剂)对乳熟期收获甜玉米后的高水分(含水量78%以上)秸秆进行厌氧发酵处理,目的是在南方亚热带炎热季节条件下克服气候、原料质量、运输等带来的不利影响,生产优质的奶牛青贮饲料,为南方奶业的健康、稳定和可持续发展提供理论依据.

以玉米秸秆作为原料,分别利用微贮技术和传统青贮技术将其加工成奶牛粗饲料,并将这2种加工方法得到的粗饲料进行理化和感官检验的对比试验,检验数据作为判断加工方法优劣的依据.结果表明:与传统方法(对照组)制作的玉米秸秆青贮饲料比较,采用微贮技术(试验组组)制作的微贮玉米秸秆饲料的品质无论是理化指标还是感官指标均明显优于对照组,微贮技术可作为奶业玉米秸秆加工制作成粗饲料的技术进行推广应用.

为了检验微贮玉米秸秆对泌乳奶牛的饲喂效果,于2007年8月份-2008年2月份在广西皇氏甲天下乳业股份有限公司来宾奶牛养殖基地进行了饲喂对比试验,研究微贮玉米秸秆对奶牛生产性能的影响,现报道如下.

In order to know about the effects of different microbial preparations on the quality of corn straw silage, high-moisture content of spring corn straw was used as raw materials to carry out fermentation of silage by adding different percentages of Lactobcillus and cellulase. The results showed that during the fermentation process of corn silage, adding Lactobcillus and cellulase could effectively decrease the decay rate of silage, improve and increase the quality and nutrient value of silage, and the effects of 0.30% cellulase was the best, the decay rate of silage was below 1.4%, the content of crude protein was 3.49%, the ratio of ammonia nitrogen to total nitrogen [m(VBN)/m(TN)] was 6.60, the content of butyric acid was 0, the content of neutral detergent fiber was 11.48% and acid detergent fiber was 7.02%, and the content of acid lignin was 1.42%. Therefore, screening and adding suitable and proper microbial preparations were the effective measures to improve the quality of corn silage.

Afterbirth than regular dairy cows can cause endometritis,reduced milk yield,calving cycle extension or even give rise to sepsis,to dairy iduatry caused enormous economic losses.In this paper,Guangxi cow afterbirth happened over the causes,incidence and integrated control of the law to investigate analysis,summarized some of the effective prevention and treatment of afterbirth over the measures aimed at the southern region of China's overall lower incidence of this disease with some successful experience.