A look at the source of eggs. Eggs must come from healthy, high-yielding flocks. The ratio of males and females in the flock must be appropriate. Second, see the egg preservation time. The hatching rate of the eggs kept generally for 5-7 days is the highest, and if the ambient temperature is low (room temperature is around 12°C), the hatching rate can be kept for 10 days. The longer the eggs are kept, the lower the hatching rate. Three to see the weight of eggs. The weight of eggs is generally 5.5-6.5 grams, local eggs can be slightly smaller, it is worth noting that the size of a batch of eggs to be consistent, so that when the hatching will be neat. Eggs are too small, hatched chicks are small, eggs are too heavy, and hatching rates are low. Four to see the egg shape. The better eggs look like big and small ends, they are of moderate length and they are natural in shape. Long eggs have small air chambers. They often suffer from lack of air and suffocate later in the hatching period. When they hatch to 18 days or so, the embryos do not easily turn and die. The round egg chambers are large, the water evaporates quickly, and the embryos are often deprived of water due to later stages. And died. Look at the color and thickness of the eggshell. The color of the shell should meet the requirements of this species. For example, the color of the chicken egg is white and the color of the Ross egg is brown. Shattered shells and sand shells are thin, easy to break, and the moisture evaporates quickly in the eggs. The thickness of the shells of “steel preserved eggs†is small and small on the surface of the shell, and the moisture is not easy to evaporate. Therefore, such eggs cannot be used as eggs. Six to see the cleanliness of the egg surface. The shell surface should be clean and free of dirt. If the surface of the eggshell is dirty and the manure is extremely polluted, it is easy to spread the eggs and spread the disease. In addition, eggs that are found to have rough, shiny, old, and mildewed spots cannot be used as eggs. Seven to see egg protein thick. Thickness of protein is closely related to hatching rate. Tests showed that the hatching rate was 82.2% for protein-rich eggs, and 68.6% for protein-thin eggs. This is because hens with thin protein eggs usually lack vitamin D and vitamin B2. A simple method to determine the protein concentration is to open the egg. If the protein flow is large, it indicates that the protein is thin. The protein of the excellent egg is concentrated and difficult to disperse. Eight see the egg yolk color. If a large number of eggs are purchased, several eggs should be sampled and the color of the egg yolks observed. The method is to open the egg, and the egg yolk of the excellent egg is orange and dark in color. Such as the pale yellow egg, indicating that the late eggs, poor nutrition, vitamin deficiency, should not be used for eggs, whether financially hatched weak chicks. China Agricultural Network Editor
Black Goji Berry is rich in protein, fat, sugar, free amino acid, organic acids, minerals, trace elements, alkaloids, vitamin C, B1, B2, calcium, magnesium, copper, zinc, manganese, iron, lead, cobalt, nickel, cadmium, chromium, potassium, sodium and other nutrients. Been scientifically tested that the content of calcium, iron, niacin is respectively 2.3, 4.6, 16.7 times of red Goji Berry, especially procyanidins than blueberries(Black goji berry contain procyanidins is 3690 mg / 100 g; blueberries contain procyanidins is 330-3380 mg / 100 g). This is the highest ever discovered procyanidins content of natural wild fruit, which is the most effective natural antioxidant, its efficacy is 50 times of VC and 20 times of VE, the vitamins, minerals and other nutrients content is also higher, medicinal and health care value is much higher than ordinary red Goji berry, known as "soft gold".
Three-Grade Black Goji Berry
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