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1. Penicillin.
The antimicrobial spectrum is relatively narrow, and it mainly acts on cocci. Most of the bacteria that cause fish diseases in the water are bacilli. So the antimicrobial spectrum of penicillin and the bacteria in the water are not right at all.
2. Penicillin has been around for many years, and most bacteria are resistant to it.
Finish. 3. Penicillin is very unstable in water, and it decomposes in a short time after dissolving, and the antibacterial effect is very limited.
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Even if pheasant eggs come from good breeders and are carefully selected, improper storage can lead to reduced hatchability and even failure to hatch. Scientific research and production practice have proved that the key to preserving eggs is temperature, humidity, placement method and preservation time.
The right temperature for the storage of pheasant eggs.
Wild eggs are produced outside the mother's body, and embryonic development is temporarily stopped, and then, under certain external conditions, the embryo will continue to develop. The critical temperature for the development of the chicken embryo is, that is, when the storage temperature is exceeded, the chicken embryo begins to develop, and when it is lower, the embryo is in a dormant state. When the ambient temperature is high, but not the appropriate temperature for embryonic development, embryonic development is unstable or incomplete, which can easily cause early embryonic death.
When the ambient temperature is low for a long time (such as 0), although the embryonic development is in a static state, the embryo vitality is seriously reduced, and even the embryo dies. The specific storage temperature can be determined according to the length of storage time. Freshly laid eggs need to be cooled down to storage temperature for 10 to 20 hours, and should not be cooled down suddenly and quickly.
Sudden and rapid cooling reduces embryonic viability, which reduces hatchability.
Suitable humidity for the storage of pheasant eggs.
During the preservation of pheasant eggs, the water in the eggs is continuously evaporated through the stomata at an inverse rate that is inversely proportional to the relative humidity of the storage room. In order to minimize the evaporation of water inside the eggs, the relative humidity of the storage room must be increased. Low ambient humidity will cause the water in the eggs to evaporate too quickly, the hatchability rate will be reduced, and the quality of chicks will be poor.
If the humidity is too high, it will lead to the growth of mold indoors, and the eggs will be contaminated with mold. Therefore, humidity should be strictly controlled. If the relative humidity in the egg storage room is low, you can increase the humidity by sprinkling water or hanging wet towels in the storage room; When the humidity is high, ventilation should be strengthened to exhaust the humid air.
How long pheasant eggs are kept.
Even if pheasant eggs are kept under the right conditions, hatchability decreases over time. The fresher the eggs used for hatching, the better, and the general egg storage time is 5-7 days, not more than 2 weeks. After more than 2 weeks, the hatchability decreased significantly; After more than 3 weeks, the hatchability drops sharply.
If it is stored under natural conditions, it can be stored for a relatively long time in early spring and early autumn when the weather is cool; The winter is very hot, and the maintenance time is relatively short.
Pheasant eggs are turned over and placed in the direction when they are preserved.
It is generally believed that pheasant eggs do not need to be turned over within 1 week of storage, and the small head is placed upward; If you keep it for more than a week, you must turn the eggs 1-2 times a day, and it is better to place them with the small head facing up. It is also believed that the eggs do not need to be turned upwards during storage, and the hatching rate is higher than that of placing the small heads down, especially within a week of storage. How to do the gacha:
Use a 20-25 cm thick board to pad one end of the egg crate, and pad the block to the other end when turning the eggs.
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OK. Penicillin is an antibiotic that can promote animal growth by giving chicks penicillin water or adding antibiotics such as penicillin to feed, which is a common practice in the breeding industry. There is a theory that antibiotics kill the bacteria in the intestines, reducing their need for energy, allowing the animal to get more food and therefore grow faster.
Penicillin pairs can remove fetal toxin from the intestinal tract of chicks and significantly improve the survival rate. Mix it in water and let it drink freely or mix it in feed.
All belong to the macrolide class of antibiotics, and roxithromycin is a semi-synthetic antibiotic that is taken 1-2 times a day. Erythromycin is taken 3-4 times a day. Roxithromycin has a slightly worse effect on gram-positive bacteria than erythromycin, and a stronger effect on Legionella pneumonica than erythromycin.
Is it harmful to be allergic to penicillin? That's a fatal thing. There is also a harm that is estimated to be that the pathogen will become resistant after using too much, thank you!
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