calving相关论文
本研究利用卵母细胞体外成熟(IVM)、体外受精(IVF)技术,体外生产牛胚胎,以获得试管牛.结果表明:卵母细胞体外培养22～24h后,其成熟率......
Glacier Changes at Svartisen, Northern Norway, during the Last 125 Years: Influence of Climate and O
本文通过对荣华二采区10...
[目的]为了解宫复康对不同胎次肉牛的繁殖障碍疾病的治疗效果。[方法]本试验以青链霉素治疗作为对照组,比较宫复康对不同胎次的肉......
以2011 ～ 2014年宁夏银川地区10个规模化奶牛场的DHI数据为资料来源,研究银川地区奶牛的生产性能.结果表明,2011～2014年银川市规模化......
The results of 439 times of calving interval(CI) from 161 yak cows showed that the average CI is 459(se=131)d. The CI wi......
The SNIT theory proposes the effects of exploding stars,supernova and nova,on the biosphere of Earth.The feature on our ......
Association between growth rates, age at first calving and subsequent fertility, milk production and
Age at first calving (AFC) affects the profitability of dairy enterprises. This study examined the relationships between......
Estimation of Genetic Parameters for 305 Days Milk Yields and Calving Interval in Xinjiang Brown Cat
This study was conducted to estimate variance components and genetic parameters for 305 days mature equivalent milk yiel......
2005年6～7月，我们在新疆昆仑山西部的一处藏羚羊繁殖地，对一个雌性藏羚羊的迁徙种群进行了研究。整个凋杏区域的海拔足4500～5000m，植被......
Effects of season calving and managements on lactating curves in two different farms (organic vs con
A total of 5852 records concerning daily milk yield, content of protein and fat, and somatic cell count was recorded in ......
Analysis of the Management and Costs Associated with Rearing Pregnant Dairy Heifers in the UK from C
Good management of the pregnant heifer is crucial to ensure that she is well grown and healthy and calves down easily be......
Analysis of the Management and Costs Associated with Rearing Pregnant Dairy Heifers in the UK from C
Good management of the pregnant heifer is crucial to ensure that she is well grown and healthy and calves down easily be......
Body condition of suckler cows at the time of calving has an important effect on calving ease and mortality of calves.In......
