Theoretically, it is best for the donor cow and the recipient cow to come into heat on the same day, which can increase the chances of embryo survival. So when the emperor brought the liquid nitrogen tank early this morning, Wang Goode, who had already been prepared, selected all the cows in estrus among the buffaloes.

The next step is to thaw.

Wang Goode took Huo Xiong to the laboratory, where the two first changed into isolation gowns, and then they took out the thin tube containing the embryo from the liquid nitrogen, and then immersed the thin tube in warm water at 35°C.

After 20 minutes, thawed embryos are also diluted several times with 0.3 moles of sucrose solution...... This is done to remove glycerol from the cells.

The final step is to determine embryo viability. After the two of them finished testing the embryos with a microscope, the preliminary preparations were completed.

Thanks to the advanced chromosomal identification technology of later generations, the probability of these selected embryos will be more than 95% in the future. Therefore, science and technology are the real reason behind all the magic, and Wang Gude and they actually stood on the shoulders of countless giants and enjoyed the results.

After the embryos were prepared here, the workers on the farm over there had also pushed the female buffalo into the special bar.

The block is a very narrow wooden aisle, and the cow cannot turn around after entering, so she can only honestly show the cow's butt out for surgery.

In previous embryo surgeries, an incision was made in the cow's abdomen. With the continuous innovation of technology over the years, the whole process is now knife-free...... Changed to use guns.

After everything was ready, I saw that Comrade Wang Gude first came behind the cow, and then he gave a soft shout, fell from his horse, aimed at the cow's buttocks, and put a part of his body ...... Poked in.

After stabbing him, Wang Goode looked at the sky with a taste expression on his face. With the slight squirming of the poked part, accompanied by the cry of the cow "Mu Mou", the scene is very exciting. Where have the farm workers surrounded by them seen such a fragrant scene, one by one swallowing and spitting, all of them dumbfounded.

said that it was too late, it was fast, after Wang Gude squirmed a few times, with a low shout of "the gun is coming", Huo Xiong, who was helping on the side, hurriedly handed over the toilet paper...... Wrong, it's the transplant gun.

Wang Goode just inserted into the cow's butt was his own arm.

This is because he first has to check which side of the ovarian the corpus luteum of the cow is located: cows with hypoplasia luteum cannot be transplanted.

After that, he has to hold the cow's cervix with his hand, and then he has to take the transplant gun with his other hand, and then poke the tip of the gun into the cow's uterus and inject the embryo.

The entire procedure must be done quickly and accurately to avoid damage to the tissues – and it can be a big stab if you are not careful.

In one afternoon, the two performed embryo transfers on more than 40 cows.

Some of these cows are in heat, while others have been in heat by injecting hormones. In short, with the existing conditions of the farm, Wang Gude and they have done the best. Now it's time to wait for fate – if more than half of the cows are pregnant, it's a done day.

Embryo transfer is a long-term process. If you want to carry forward a cattle herd, it takes ten years to make a unit.

After more than 50 years of introduction and improvement in China, the number of Simmental breeding cattle is only 20,000, and the remaining millions are all crossbred cattle, which shows how difficult it is to increase the number of native breeds.

The only good news here is that the frozen embryos are very small, so Cao Chuan can bring a liquid nitrogen tank over from time to time.

As long as there is a sufficient number of expectant cows here at all times, the magical technique of embryo transfer can continue until the population is increased to more than 1,000 heads...... At that time, it will be possible to consider setting up sub-bases in the north and south.

It is now the 17th century, when the land is vast and sparsely populated, and the traversal can raise cattle in the enclosure of the Ming Dynasty, and they are not afraid of insufficient land.

......

After Huo Xiong finished working as a helper, he lived on the farm that day. The next day, he was going to go to the grain company to make a fuss, but who knew that the horse farm called again and asked him to come over. So with reluctance, Huo Xiong rode a motorcycle to the horse farm again.

When it comes to Ma Zheng, there are more contradictions here, and we have to start from a long time ago.

First of all, the horse farm was not set up by animal husbandry people like Huo Xiong. It is actually the military who are pushing for the construction of the horse farm...... Army, to be exact.

This again involves a strategic issue.

In the eyes of army people, in the next three to five years, at most seven or eight years later, the imperial army in the north of the Ming Dynasty is bound to experience a series of major battles, with small-scale public security battles in addition.

One thing is obvious: there is no water system extending in all directions in the north of the Ming Kingdom, and only the official road that can be called "funny" in the eyes of the public can only be crossed. In this case, cavalry units are very useful, especially in endless skirmishes.

Therefore, the army has long been planning to form cavalry units - the army horse population cannot be bred in a year or two, this is well known.

However, the Army's attempt was opposed by all. Others are just against it for the sake of opposing it...... Every time you import a horse, I have less equipment on my side. And the most ruthless in the back of the army is actually the navy.

Navy professionals quickly revealed the name of the army: for cavalrymen with breech carbines and fighting natives, the mode of war was long ago not covered by bloody sabers.

Even if the Imperial Army has cavalry in the future, the combat mode will be very easy - get on the horse and trot... Approaching the target... Dismount and shoot... Leisurely catch up with the rout from behind and slash with a saber.

Yes, this is the procedure for hitting natives with breech guns. At a distance of 400 meters, the enemy will be crushed by the rain of bullets, and there is no need for any military horse charge.

The so-called elite cavalry, with high-tech equipment, has been upgraded to "mounted infantry", which has led to a lower demand for expensive good horses.

In this mode, the army is noisy and shouting, and the military horses raised by spending huge resources are actually useless - whether it is a horse, a bad horse, or even a donkey or a mule, as long as it can carry people and trot, it can achieve tactical goals, and the advantage of military horses is greatly reduced here.

Therefore, the formation of elite cavalry units is a huge pitfall...... The real purpose of the army is to pretend to be coercive, and to use the import quota of other departments to go to the north to pretend to be coercive.

...... After being identified by the Navy in this way, the various departments that suddenly realized that they suddenly set off a wave of criticism of the army swindler gang.

And the army group that encountered the 17th century knife sect saw that the situation was not good, and they could only temporarily stop the battle and write down the bastards in a small ledger to take revenge in the next day.

Originally, this matter was over. As a result, it was good to die, and in the preparatory meeting before Emperor Cao's accession to the throne, a brain-dead person put forward the concept of "white horse opening the way".

This is a bad thing. When Emperor Cao heard this, he said on the spot that this can be ...... The army commander Han Xiaobo, who was present, reacted quickly, and immediately added an advanced enthronement concept of "twenty-four white Arab horses and silver-armored knights to open the way" to the emperor.

Although Han Xiaobo did not succeed in the end...... Xia Zhongtang personally took action, and forced the number of horses to be reduced to 4 in the face of the emperor's unhappiness.

But after this out, the door that had been closed was forced to open a crack - the army's cavalry plan turned over, and it was able to go on again~!

......

After twists and turns, the army's own military horse farm was built in a flickering manner, and the location was not far from the cattle farm.

Without the support of the administrative system, the horse farm has struggled to function since its inception. With the exception of the four purebred Arabian horses, the rest are a number of dwarf Dian horses and pullers, which are very small.

Although animal husbandry does not interfere with the operation of the horse farm, the responsibility of "technical guidance" is still there, so Huo Xiong still has to go around if he has nothing to do.

The person in charge of the military horse farm is called Huang Xu, and he is a strong black man with muscles. This gentleman worked as a cowboy on a western farm before crossing over, and also served in the National Guard, and is a compound talent in the army, and he is also the confidence of the army to establish a military horse farm.

Seeing Huo Xiong, Huang Xu, who was originally brushing the horse, threw the brush to the horse farm worker on the side, and then he strode over.

After patting Huo Xiong vigorously on the shoulder, Huang Xu took out two punch cigars, one for each person.

"Oh, that's good." Huo Xiong lit his cigar and took a deep breath: "If you don't say that you have been in the United States, you will enjoy it differently." ”

"I'm not used to smoking domestic cigarettes, and I have a lot of phlegm." After Huang Xu took a puff of his cigar, he didn't go around the bend, and went straight to the point: "I heard that you had an embryo transfer yesterday?" ”

Huo Xiong nodded: "Well, I planted more than 40 heads, and I don't know what the effect is." ”

"Then it's time to try it on horses, right?" When Huang Xu said this, his eyes stared at Huo Xiong with blazing eyes.

"Don't tell me this." Huo Xiong cocked Erlang's legs at this time, leaned on the motorcycle seat, and said to Huang Xu with a smile: "All the consumables and labor need to be at the meeting, and I can't be the master." ”

Huang Xu thought to himself, if I can handle the cabinet meeting, what are you going to do? However, he will be asking for help, and he will naturally speak politely, so he can only smile: "You are the leader of the animal husbandry company, and you will help shout at the meeting?" ”

"Lao Huang, I won't tell you, don't expect the Animal Husbandry Corporation to do this." Huo Xiong also opened the skylight and said brightly: "I even have to look at the breed of cattle... The emperor's face is convenient for others, and the horse breed is even more impossible. If you want to expand the population, you have to pass the cabinet level. ”

"Cows and horses are equally strategically valuable!" Huang Xu was indignant: "Sooner or later, those people will find out that they have made a mistake!" ”

Huo Xiong laughed when he heard this: "Hehe, Lao Huang, it's not me who said, at the moment, the strategic value of horses is really not high." ”