The first is homogenous matching. It is to select excellent male and female rabbits with the same characters, consistent performance, or similar breeding value to be matched in order to obtain similar excellent offspring. The more similar the matching parties are, the more likely it is that the common good quality be passed on to future generations so that good traits can be maintained and consolidated. For example, selecting the large male and female rabbits with good fur quality for mating can further stabilize and consolidate the heritability of the importance of the weight and fur quality of rabbits. The second is a heterogeneous match. It can be divided into two cases. The first is to select male and female rabbits with different superior traits to match each other in order to combine the two traits so as to obtain offspring with both parents' different advantages. For example, selecting a long-haired and hairy rabbit matches the purpose. Another example is that selecting medium-sized rabbits with high hair density and mating hairs that are not prominent but with a large body size brings together fine hairy and bulky traits that can improve fur quality in offspring. The second is to select the same trait but good or bad, to correct the bad traits with good traits, in order to achieve greater improvement and improvement of future generations. For example, some rex rabbits are thin and evenly distributed, while others are hairy but poorly homogenous. After mating by heterogeneity, hairy and evenly homozygous offspring can be obtained. The third is age matching. The suitable modes of adoption include young male rabbits, young female rabbits, outstanding old male rabbits, young female rabbits, young male rabbits, young female rabbits, young male rabbits, young female rabbits, and young male rabbits and old female rabbits. The fourth is related selection. Also known as pro-community, it is the abbreviation for close-parent mating or kinship mating. It refers to mating between two parents whose total number of generations of common ancestors does not exceed six generations. This method is mostly used in rabbit breeding. Inbreeding is prone to decline, such as decreased offspring resistance and viability, offspring mortality during embryonic or postnatal periods, appearance of malformed rabbits, slow growth, and reduced fertility and productivity. Use less on rabbits.
[Sample requirements] Vtm Sampling Tube With Swab,Disposable Collection Tube Of Virus Samples,Hi Media Vtm Kit,Amylase Sample Collection Tube Jilin Sinoscience Technology Co. LTD , https://www.jilinsinoscience.com
The collected nasopharyngeal swab samples should be transported at 2°C to 8°C and sent for inspection immediately, and the sample delivery and storage time should not exceed 48 hours.
[Testing method]
1. Before sampling, mark the relevant sample information on the label of the sampling tube.
2. According to different sampling requirements, use a sampling swab to sample in the nasopharynx.
3. The specific sampling methods are as follows:
a) Nasal swab: Gently insert the swab head into the nasal palate, stay for a while and then slowly turn to exit. Wipe the other nostril with another swab, immerse the swab head in the sampling solution, and discard the tail.
b) Pharyngeal swab: Wipe bilateral pharyngeal tonsils and posterior pharyngeal wall with a swab, also immerse the swab head in the sampling solution, and discard the tail.
4. Quickly put the swab into the sampling tube.
5. Break the part of the sampling swab higher than the sampling tube, and tighten the tube cover.
6. Freshly collected clinical specimens should be transported to the laboratory within 48 hours at 2°C to 8°C.
[Explanation of test results]
After the sample is collected, the sampling solution turns slightly yellow, which will not affect the nucleic acid test result.
[Limitations of the test method]
1. For samples that are seriously contaminated due to improper storage after collection, the final test results will be affected.
2. If the sample is not stored at the specified temperature, the final test result will be affected.