Translation from Zhivotnovodstvo, 1966:5, pp. 84-89.
|Statement||by L.B. Aizinbudas and P.P. Dovilt́is.|
|Series||Translating programme, RTS -- 5897|
|Contributions||Dovilt́is, P. P.|
|The Physical Object|
|Pagination||12 leaves :|
|Number of Pages||12|
Artificial insemination of equines has been around a long time and, through the years, has had a profound impact on the horse industry. Most of . Artificial insemination (AI) of swine is widely practiced in countries with intensive pig production. In Western Europe, more than 90% of the sows have been bred by AI for more than two decades (Gerrits et al., ; Vyt, ).When compared with natural mating, AI is a very useful tool to introduce superior genes into sow herds, with a minimal risk of disease (Maes et al., ). Artificial insemination (AI) in swine is not a new technique. There are reports as early as the s of collecting semen for insemination. However, use of AI in the United States has skyrocketed in the past decade. It is important to remember that AI is a tool that will work for your operation only if you are willing to manage and use it of the disadvantages of AI is that it may. G.J.M. Rosa, in Brenner's Encyclopedia of Genetics (Second Edition), Overview. Progeny testing is a method commonly used in animal breeding programs, and to some extent in plant breeding as well. It relies on phenotypic assessment of an individual’s offspring to .
•No method exists for determining the absolute value of the potential of a single electrode, since all voltage-measuring devices determine only the difference in potential as defined in this manner. •BUT a relative half-cell potential can be measured against a common reference electrode. Breeding values for fertility are estimated jointly for Austria and Germany since A single trait (non-return rate 90) was used in the genetic evaluation until Quite often cows culled for age at 9, 10 or 11 are still rearing good calves each year. On the other hand, some of the younger cows retained in the herd fail to conceive. Old, pregnant cows are obviously more productive than young 'empty' ones. Culling cows on the basis of a pregnancy test is much more efficient than simply culling on age. • Too early insemination results into many sperm cells dying /aging before the cow ovulates. • Too late insemination results into the egg will have aged / deteriorated and died before sperm reaches the site of fertilization (Ampullary-isthmic junction). 4. Cow’s factors: • Age of female animal: low conception rate in older cows.
The herd-year mean conception rate to first insemination in the current data set varied between and with an average of (), which is slightly more variable compared with the report of Dairy Australia () where the mean herd-year conception rate to first insemination ranged between and with an average of Having such variation in herd-level fertility implies that. [Blitz] , Electrical and Magnetic Methods of Nondestructive Testing, Adam Hilger, IOP Publishing Ltd., [Techniques] and e, Nondestructive Testing Techniques John Wiley & Sons, [Gardner] r, Editor, Improving the Effectiveness and Reliability of Nondestructive Testing Pergamon Press, disadvantage: misleading test results due to improperly following manufacturer's directions, inadequate training of personnel, improper maintenance, poor record keeping Describe the use of and the need for adherence to quality assurance and quality- control. For accelerated test, we want as high current density as possible to reduce testing time But, be careful with high temperature gradient. ` Limitations of EM test structure. l Runaway Current Density (J. max = 7. A/cm. 2) ature Gradient dΨ/dx as small as possible *all numbers here are approximated. in t = h=1um technology.