This stage is a little longer. Just as the line marked, it lasts for more than two months, but during this time their appetite will gradually increase. The same, their weight will also grow. By about 100 days, such a duck will usually exceed three pounds!

Of course, if we adopt the breeding method carefully studied by Zhangjiazhuang, we can make their weight reach four kilograms! However, after this stage and entering the maturity stage, the food consumption of ducks will not decrease, but their growth will become slower. It can be seen that this stage is no longer proportional to duck raising. Unless the eggs are laid, the benefits brought before will be consumed at this stage!"

"Can you say it slower?" Changsun heard a little, but she was still in the vague stage for the overall explanation, so she said to Zhang Yi: "I just heard it. The several periods you marked are all judgments based on the growth of ducks, and the key you mentioned is the growth situation in the previous two stages.

If I'm right, you want to tell Your Majesty that the first two stages can make money, and the third stage will lose money, right?"

Zhang Yi nodded helplessly, without any refutation of Changsun's words, and of course there is no way to refute it.

Because he meant this, and he also specifically mentioned the breeding method of Zhangjiazhuang, the purpose was to highlight the growth effect of ducks during the growth period.

At this moment, Zhang Yi smiled and said, "The Empress said it well, Xiaochen means this! But perhaps many people will think that as long as they pass the later maturity period, the female duck can lay eggs, thus achieving the purpose of profitability. And as of now, almost all farmers use this method!"

"Not bad! The chicken is born with eggs and the egg is born with chickens, this is the reason!" Li Er said in a deep voice: "We will eat one duck now, and there will be more ducks in the future. I really don't know how many ducks have been lost in this cycle! In the homes of ordinary farmers, unless the ducks are old, it is impossible to slaughter like you!"

Zhang Yi was a little depressed!

If a duck is raised until old age, God knows how much time, energy and food will be wasted. Is it just for those few duck eggs?

Don't they know the pros and cons?

After thinking about it, Zhang Yi decided to explain to Li Er carefully in terms of the benefits of the middle. If an emperor thinks that the most backward breeding method is used for breeding, then the people of the Tang Dynasty will have to wait for many years if everyone wants to eat a meal of meat every month.

Thinking of this, Zhang Yi's face became serious and he said solemnly: "Your Majesty, the methods you mentioned for ordinary people to raise ducks are not only of no use, but are even a real waste in my opinion!"

"Huh?" Li Eryi was shocked and asked, "What do you say?"

If Li Er had just thought that Zhang Yi said this just to excuse himself, but after hearing the present and looking at Zhang Yi's expression at this moment, he couldn't help but think that maybe this was really the case, so he also felt a little expectation.

After all, Zhang Yi's remarks in the morning have proved that he is not a simple playboy. On the contrary, he is even a young man with a smart mind and not sticking to the norm.

And such people represent innovation!

As an emperor, Li Er is very clear about the importance of innovation. If it cannot innovate, it means backwardness. For thousands of years, the ruling methods of soldiers, agriculture, commerce and even the court have been constantly changing. The aging and useless things in the past have gradually been replaced by advanced methods, and these advanced methods are the driving force for social development.

"Your Majesty, this is actually very simple. I once thought about the breeding of chickens and ducks, and finally came to two results!" Zhang Yi stood up and said to Li Er: "The first result is to raise roosters or ducks. Because you can't lay eggs, you will definitely lose money. I wonder what Your Majesty thinks?"

"Well, it's true according to your words!" Li Er confirmed Zhang Yi's statement.

As Zhang Yi said, whether it is a rooster or a duck, not being able to lay eggs means no output. Even because it has grown to the extreme, it is almost negligible to grow meat in the later stage of feeding. Even if it grows a little, it is really not cost-effective for the food consumed and various resources.

"The second result is that even if a hen or a female duck is raised for a long time, even if the eggs are laid, if such meat duck or broiler is raised specifically for eating within this cycle, the value it generates will still be much lower!" Zhang Yi said sincerely: "It takes about 8 months for a duck to lay eggs from hatching to laying eggs, and it takes a year longer.

We will take ten months on average, so if we raise meat ducks in these ten months, we can raise 3 batches! That is to say, when an egg-laying female duck can help us create benefits, in fact, we have made money three times to raise meat ducks!

The price of a duck is about five cents. We price a duck like this that we eat now at twenty-five cents. If we exclude labor and the cost of grain is five cents, then we can earn fifteen cents for a duck. In three batches, we can earn forty-five cents!

In this way, the people in the middle can not only make money quickly, but also provide the society with a lot of meat, thus changing the current situation where it is difficult to eat meat once a month!”

"Although I am not familiar with farming, I still know that a duck egg now seems to cost a cent, right?" Li Er couldn't help but look at the guard next to him.

"Back to Your Majesty, an egg or duck egg on the market costs about one cent per cent!" The guard replied immediately, "The youngest son in the little family often eats eggs, so he knows the price very well!"

Li Er nodded, then turned his head to look at Zhang Yi and smiled, "Boy, have you heard that an egg costs one cent, so a chicken can lay thirty eggs in a month. That is to say, as long as the chickens and ducks are raised until they can lay eggs, they can bring thirty cents to the farmers in a month."

Li Er didn't continue, but the meaning was very clear. If one month could bring thirty cents of investment, what would happen in two months or three months?

Obviously, in his opinion, although there seems to be no return in the front, from the later profits, in the long run, it is more cost-effective to raise chickens and ducks with eggs!
Chapter completed!