After learning the news of his mother's recovery in medical school, Li Cheng and Li Zhiwu were very excited, and before they could calm down, Bob informed Li Cheng that the foal was being conceived, and the double joy made Li Cheng's father and son put down their psychological baggage at once, so they finally came to the University of Calgary, Li Cheng said to Bob: "Your Excellency doesn't mind me visiting the mare in the breeding process, right?" ”

"Of course you don't mind, you can come at any time, your family comes together?" Bob glanced at Li Cheng's parents, because of language reasons, Bob and Li Zhiwu and Yi Xiaomei simply communicated with their eyes and gestures, and Li Cheng's parents, who were a little worried, would feel bored, after all, studying any branch of the surname field is very boring.

"I'll ask my parents."

"Mom and Dad, Professor Bob are going to go with me to the veterinary school to see the artificially inseminated horses, you want to come with me?" Li Zhiwu came to Canada this time in addition to visiting Li Cheng, the main purpose is to treat Yi Xiaomei's recurrence of breast cancer, and now he has passed a series of examinations, and the authority has verified that there is no abnormal conclusion in the body, and the two who are physically and mentally relaxed finally have the surname of travel, not to mention that as a parent, they don't want to disturb Li Cheng's business, Li Zhiwu said: "Ah Cheng, you don't have to worry about our two old guys." ”

Parents came to Canada for a few days, all stayed in the grizzly bear ranch that is a more remote place, although the scenery is unique, the climate is pleasant, the environment is beautiful, quite idyllic, but the parents are farming in the countryside, the domestic countryside and the Canadian ranch, although the scale is incomparable, but there are still many similarities, so after staying in the grizzly bear ranch for a long time, I also became curious about the big city, on the way to come, I saw the buildings in Calgary, and I had the heart of visiting, just because of Yi Xiaomei's condition, so I didn't have time to say it.

His parents were going to visit the University of Calgary, and Li Cheng was in a dilemma, and after asking Professor Bob, he took out a mobile phone and made a call, and in about 10 minutes, a young man and a woman of Asian descent trotted over.

Bob introduced: "This is our veterinary school student from China, this is Bi, which is Wu. ”

"Hello, my name is Bi Guodong and I am from Stone Town, China!" An Asian man with a Sven appearance and a height of more than 1.7 meters greeted him, wearing a pair of black-framed glasses, a Chinese face, and a standard southern body board, took the initiative to shake hands with Li Cheng and others, and then introduced himself, using Mandarin with a standard southern accent, which made the parents feel more cordial.

There are a lot of Chinese students all over the world, especially international students, in the United States, Canada, Europe, Australia and other countries with superior educational resources, many Chinese students come to study every year.

Another small and exquisite, about 1.6 meters girl, looks gentle and charming, with long black hair and a shawl, black eyes exuding a confident brilliance, and generously introduced: "Hello uncle and aunt, my name is Wu Xiaowan, from West Lake, please give me a lot of advice." ”

Then he shook hands with Li Cheng and touched his soft little hands, Li Cheng finally understood what the summer rain lotus on the shore of Daming Lake looked like, and the women in the West Lake were really out of the water hibiscus!

Bob saw that everyone knew each other, so he asked Bi Guodong and Wu Xiaowan, two Chinese students, and went to the College of Veterinary Medicine with Li Cheng.

Two international students took Li Zhiwu and Yi Xiaomei to visit the University of Calgary.

After Li Cheng and Bob left, their parents happily led a tour of the University of Calgary by international students, not only to tell the history and cultural atmosphere of the university, but more importantly, to meet Chinese in a foreign country, which was still a happier thing for the two elders.

I have to say that traditional Chinese parents have always been very concerned about their children's marriage, and the first impression of Wu Xiaowan, a foreign student who met for the first time, was very good, and she talked about her son Li Cheng intentionally or unintentionally.

Not to mention that his parents are working hard for Li Cheng's marriage, on the other hand, Li Cheng and Bob went to the veterinary college while chatting.

They did not go directly to the stable of the academy, but entered a research room, and a familiar figure caught Li Cheng's eyes.

"Hey, Miss Caroline, it's been a long time, what are you doing?" Li Cheng walked over and saw Caroline in a white gown, seemingly studying something with several veterinary interns.

One container contains a mass of black particles, and the other container contains a white liquid, stir it and observe its reaction.

Caroline is observing the process of egg and sperm union in sturgeon, and this research topic is to lay the foundation for artificial insemination of wild sturgeon, which is also a branch of research that discusses the advantages and disadvantages of artificial intervention in breeding from fish, livestock, insects, etc.

"Mr. Cheng, we are studying the reproduction of sturgeon." Caroline's words made Li Chengru be electrocuted, and the sturgeon reproduced? Could it be that the sturgeon in the Crystal Palace is preparing to ovulate Xiao Xun is not fertilized? So isn't the released egg an infertile egg? Li Cheng, who didn't know much about fish reproduction, thought that sturgeon was similar to the way sharks reproduce.

There are three types of reproduction in fish: oviparous, which is a reproductive mode in which broodstock directly lay mature eggs in water for fertilization. In this way, the broodstock mostly does not protect the eggs it lays. It is often devoured in large quantities by various predators, and the fertilization and development of eggs in the water are greatly affected by environmental conditions, so the number of eggs laid by oviparous fish is relatively large.

Ovoviviparity is the fertilization of eggs in the female body and development in the reproductive tract, and the nutrients required by the embryo body during the development process are completely supplied by the yolk of the egg itself. This method is one step more evolutionary than oviparity, and is not affected by the changing environment, which is more conducive to the protection of offspring. For example, fish such as crucian carp and wicker fish.

Viviparity, the egg is fertilized and developed in the body, and during the development process, the embryonic body not only relies on its own yolk to nourish itself, but also produces many folds and protrusions on the yolk sac wall to combine with the mother to form a yolk blastocyst embryo like an umbilical cord, through which nutrients can be obtained directly from the mother. This type of reproduction, similar to that of mammals, is the most progressive way because the fertilization and development of eggs is reliable and guaranteed. Such as gray star shark and true shark.

So Li Cheng thought at first that Xiao Xun had been fertilized and should belong to the viviparous range, but he didn't expect that the sturgeon still uses oviparity, which is the most spawning method of this fish, that is to say, if Xiao Xun ovulated, then this pile of eggs will not be able to give birth to a baby sturgeon!

Li Cheng really realized the erudition of veterinarians, but he was studying accounting, except for the operation of the grizzly bear ranch, so that he would not be exploited by the tax bureau for too much tax, there was no other use, in the process of raising livestock and fish, it was equivalent to learning from scratch! Li Cheng began to wonder if it was better to learn this knowledge from Professor Bob, and to be a bystander.

"I should take more time to come to the University of Calgary to audit, and it will be helpful to learn more about future farming." After listening to Caroline's explanation, Li Cheng understood that they were doing research on the topic of sturgeon reproduction, and saw that there seemed to be eggs and sperm in the sealed container, so he said to Professor Bob: "I have a reluctant request, there is a grizzly creek lake with good water quality in my ranch, and I also saw traces of wild sturgeon a few days ago, but the number is very small, I wonder if you can give me some sturgeon sperm?" I'm afraid that the sturgeon eggs in the lake are not fully fertilized. ”

Li Cheng's words did not cause everyone to be surprised, after all, it is the duty of every Canadian citizen to protect wild sturgeon, and it is not surprising that Li Cheng has such thoughts.

"Did you see sturgeon ovulation in Grizzly Creek Lake? And the number of male sturgeon is very small? Professor Bob deduced the reason why Li Cheng only needed sturgeon sperm.

"Yes." Li Cheng borrowed the donkey to go downhill and secretly said that Professor Bob was really reasonable.

"Well, we took a lot of sperm, which can be stored for more than 14 days in an ultra-low temperature state, and you can take some of it." With Professor Bob's approval, Li Cheng got a container of sperm, which was probably enough for Xiao Xun's eggs to be fertilized, and he didn't dare to guarantee whether the quality of this batch of sperm was good or not, could it completely make Xiao Xun's eggs fertilized successfully? However, even if there are only a few dozen or a few, it is enough for the sturgeon population in the main hall of the Crystal Palace to prosper.

"Thank you." Li Cheng said thank you, stood next to Professor Bob, and observed him instructing female veterinarians to study the topic of wild sturgeon breeding.

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