Why did the young frogs die in large numbers and did not feed for several days

Feeding management of young frogs.

Intensive domestication: concentrated with high density.

According to the density of 100 150 per square meter, in the cement pool with a smooth inner wall and a height of more than 1 meter, the water depth of the pool is about 20 cm, and the bait table is placed on the water surface, and there is no land in the pool, forcing the young frogs to come to the stage to concentrate on feeding and perching.

Tame: Use fresh first.

Feed feed 1 for 2 days, starting on the 3rd day.

Add 20% of the total.

After that, the proportion will be increased day by day, and after 10 days, it will increase to 80% of the "live bait" feed, mainly earthworms

Small fish and shrimp, insects, scorpions and.

Wait; "Dead bait" means:

Dry, animal offal and.

Wait; With movement and static, the "dead bait" is activated, and finally it is excessive enough to completely ingest artificial bait. At the same time, it is required to feed timing, quantitative, and positioning.

Feeding time, spring and autumn around noon, summer in the evening or morning, feeding 1 2 times a day, each feeding should be about 1 hour after the young frogs eat. Young frogs weighing less than 50 grams.

should account for 6-8% of body weight; Young frogs weighing more than 100 grams should account for 8 10% of their body weight. The bait needs to be fresh, clean and nutritious.

Screening, grading and sub-breeding: when the young frogs are domesticated for 20 to 30 days, the pond water should be drained, and the large-sized young frogs should be transferred to the adult frog pond according to the density of 60 80 per square meter; Small-sized young frogs are still domesticated in the original pond. The use of bait, indoor three-dimensional, multi-layer cage intensive farming is a new method of breeding frogs.

Frogs are bred in.

and wooden boxes, carried out small-scale farming yields extremely high per square meter.

Hundreds of frogs are raised, and it generally takes only 5 months from hatching to adulthood.

I like that the sales rep is tall, but I can't say it.

It is due to the fact that it takes a period of time for the body to die, and the nerve reflex arc is manifested as muscle spasm twitching, and the human reflex arc stress response can often be seen in daily life. For example, when your fingers touch something hot, you will immediately withdraw your hand, but this is not directed by the brain. Rather, it is a stress response to the spinal reflex arc.

There is a case that proves that this stress response is not controlled by the brain. It's just dead, and the animal's nervous system isn't completely destroyed, so it's still moving. When the animal has just died, the nervous system has not been completely destroyed, and since the death of the organism takes some time, the nerve reflex arc manifests itself as a spasmodic twitch of the muscles.

The human reflex arc stress response can also be seen in daily life, which is not directed by the brain, but the stress response of the spinal reflex arc, such as finger touching.

There is a special type of electricity in animals called animal electricity.

Summary. Hello, dear. After the breeding frog lays eggs, some female frogs or male frogs with poor physique are easy to die, and the dead breeding frogs should be fished out of the breeding frog pond in time to avoid polluting the water source and affecting reproduction.

Hello, dear. After the breeding frog lays eggs, some female frogs with poor physique or male Sakura frogs are easy to die, and the existing dead breeding frogs should be fished out of the breeding frog pond in time to avoid polluting the water source and shadowing the reeds to reproduce.

This is to see the survival rate according to the spawning environment, there are different frog species, temperature, etc. affect the survival rate, some farmers say that the survival rate is 50 percent, and some think that it is 70 to 80 percent in the spike.

Because the female frog can raise hail after smiling and calling Kai, the consumption is large, the physique is weak, and the exercise ability is poor, so it is necessary to enter a reproductive dormancy period for rest and rest to recover physical strength, and the dormancy time is about 10 days. If this dormant law is artificially destroyed, so that the female frog after laying eggs can not rest, there will be a large number of deaths, therefore, within a few hours after the female frog lays eggs, the female frog must be removed from the spawning ground, immediately sent to the temporary habitat, so that it can be dormant in time.

The frog's eyeball is very special, it is only sensitive to things that are alive, and it is difficult to detect things that do not move. Since the dead bug does not move, the frog cannot notice it even in front of it, let alone eat it.

This is what I saw in "100,000 Whys", this book can make us understand more knowledge and help us a lot, so I hope everyone can also buy this book and know more knowledge.

There are also many books that are beneficial, and we need to increase the amount of reading so that we can become smarter!

The frog's eyeballs do not adjust, and they are very sensitive to moving things, and it is difficult to detect things that are not moving. The four insects will not move, and they will not be found even if they lie next to the frog. So, frogs don't eat dead bugs.

01 The eyes of frogs are frog eyes, and the characteristic of frog eyes is that they only react to moving objects and cannot see stationary things, so frogs only eat things that move.

A frog's eyes cannot see anything still. The eyes of a frog are different from the eyes of ordinary animals, they are designed to look at moving objects, and moths and flies that do not move are unresponsive in the eyes of frogs. However, as soon as the moth moves, the frog will immediately spot it and, depending on the direction and speed of its flight, leap up to prey on its mouth.

It's no wonder that some zoologists joke that frogs like to eat flies. However, a frog would starve to death if it sat in a pile of dead flies.

The frog's eyes also have a special ability to recognize different images, and it can immediately identify its favorite flies among the various shapes of flying small animals, while the flying small animals are stationary in the background, but the frog's eyes do not react. In other words, the frog's eye is not like a camera, it can take pictures of everything in front of the lens without missing anything, and it only sees the things that are useful to it. Frogeye can quickly spot moving targets, quickly determine the target's position, direction of movement and speed, and immediately select the best attack posture and attack time.

What are the structural characteristics of the frog's eye? So that the frog has such a strange ability? After in-depth research, scientists have found that the retina of frog eyes is composed of three layers of cells: the photoreceptor cell layer, the intermediate contact cell layer, and the ganglion cell layer.

The photoreceptor cells in the first layer transmit images of external objects on the retina and convert the images into electrical nerve signals.

The second layer of contact cells is responsible for transmitting electrical signals to the third layer.

The third layer of ganglion cells detects image features and codes these electrical signals to the brain.

Ganglion cells are further divided into four categories, each of which performs a specific detection function and only responds to a certain feature of the moving target, identifying and extracting different features of the retinal image. In this way, a complex image is broken down into several easily recognizable features, improving the speed and accuracy of target discovery and identification.

Therefore, scientists call these four types of ganglion cells "detectors", which are "edge detectors", "convex edge detectors" (also called "insect detectors"), contrast detectors, and "dimming detectors". Together, these four detectors allow the frog to respond only to the objects that are critical to its survival.