What determines the color of the yolk
The color of egg yolk depends on several factors, including:
- Conditions of poultry. If the chicken is kept in the household, walks in the wild and, apart from absorbing grain, has the ability to be bred and to find various bugs and worms in the ground, then the yolks of eggs laid by it will be more saturated yellow-orange. But when the norms of keeping birds are violated, at which they are indoors for 24 hours, do not have the opportunity to move well and do not receive enough UV light, then the yolks of the testicles of such chickens will have a pale yellow color.
- Seasonality. Sometimes the color of yolks depends on seasonal changes: in winter, it may be paler from fewer fresh vegetable feed and insufficient intake of ultraviolet radiation.
- The composition of the feed. If the chicken organism sufficiently receives all the nutrients and vitamins, then the yolks in the eggs will be painted in a more saturated color.
What color should egg yolks be?
Quality eggs from healthy layers can be with yolks of different shades of yellow, as this depends on the amount of carotenoids in food. These antioxidants contribute to the formation of vitamin A, which makes these products valuable to our body.
Carotenoids are part of the following components of the combined feed:
- yellow corn varieties,
- dog-rose fruit,
- red paprika
- green grass or substitutes (alfalfa grass meal).
Also, dark yolks indicate the content of fatty acids (Omega-3) and xanthophylls in them. If only grain dominates in the poultry diet, then the egg yolks will be pale, with lower nutritional value. Consequently, the better and better the nutrition of the bird, the richer the color of egg yolks, and the more valuable substances they contain.
What if the chickens began to carry eggs with green yolk
First you need to trace whether all chickens began to give eggs with this pathology or only individual individuals. Then it is advisable to give such eggs for research. To get an accurate conclusion about the causes of this phenomenon, it is best to contact the laboratory of veterinary and sanitary examination.
Reasons for rejection
Painting the yolks in a green shade may indicate the following factors:
- Chickens are given food with green colored pigments.
- Viral diseases of chickens.
- Old age of layers.
- Failure to store the eggs or damage to their shells, due to which harmful substances are ingested.
- Infection of eggs with putrid aerobic bacilli.
In the latter case, green rot occurs in the product, caused by the various groups of bacteria Pseudomonas. Typically, these bacteria are in the traces of chicken droppings left on the egg shell. With increased humidity from the surface of the shell, putrefactive bacilli freely penetrate into the eggs and begin to multiply rapidly there, emitting greenish substances. Also, a green color may appear due to the development of Staph aureus inside the bacilli.
How to bring the yolk back to normal
Here are some suggestions for eliminating the causes of this anomaly:
- If it is established that the cause of the unnatural color of the yolk was nutrition, which included green color pigments, it is advisable to reconsider the diet of hens and eliminate such feed.
- In case of viral diseases and other illnesses, it is necessary to consult a veterinary specialist, who will determine which virus affected the birds, and prescribe a course of a suitable antibiotic.
Prevention of diseases affecting the color of the yolk
Here are some preventive measures to prevent this pathology in the hens:
- Vaccination. With the threat of the spread of viral diseases, it is important to give the birds regular vaccinations with a live attenuated vaccine, after which the vaccinated chickens will have active immunity.
- Hard sanitation. To avoid viral chickens, prevent infection of eggs by putrefactive bacteria and microorganisms, as well as their spread inside the chicken coop, you must strictly adhere to the rules for collecting eggs, their preservation and sanitary and hygienic requirements provided for in the preparation.
Food rules for high quality egg production
To increase egg production, you need to know some rules for feeding chickens:
- Regular and uniform feeding. Poultry should be fed twice a day: in the morning and in the evening. Morning feeding is carried out immediately after the awakening of the birds - they give a wet mash (boiled potatoes mixed with ground grain, bran, crushed eggshell, salt and kitchen waste). In the evening, pets need to feed whole grains an hour before bedtime. Every evening feeding, it is desirable to give a grain of a different type (today - oats, tomorrow - barley, the day after tomorrow - wheat, etc.).
Here they are, pigments!
Elizabeth II for breakfast is often cooked scrambled eggs with brown shells. It is important that the yolk in the cooked dish is not pale. Such dishes like the British Queen most of all.
Many of us believe that the richer the color of egg yolk, the more useful it is. In fact, the color does not affect the “naturalness and usefulness”. However, like the fact, homemade egg or not. Everything is much simpler and more complicated at the same time. Why is it easier?
Everything is simple
The color of the chicken yolk is different and depends only on what feed the hen.
- If she is given carotene-rich food, the color will be brighter. Carotene is abundant in products such as corn, alfalfa, carrots, etc.
It should be noted that not all feed with carotenoids will give the desired yellow color. Even if you zakormit chicken carrots, you will not achieve an intense color, because the beta-carotene, which is contained in carrots, will not accumulate in the yolk. Its color does not depend on it. That is why chickens are not fed carrots.
But the pigments contained in corn and green grass, belong to the group of "yellow xanthophylls". They get right on target - the apple, that is, the chicken yolk - and perfectly fulfill their task: they make it in color the way we like it, consumers. The color saturation depends on such pigments.
Therefore, chickens that are regularly fed on corn, alfalfa, grass meal and corn gluten carry eggs with yolks of a beautiful “consumer” color.
Please note that it is a beautiful color! It does not affect the benefit, but the price - how!
- Feed with carotene more expensive - this time. Hence, the price of such goods will be higher.
- A farmer has a lot of chickens - these are two. So, you need a lot of feed and serve the chickens harder.
- If there are a lot of chickens, they are unlikely to walk in freedom and bask in the natural sunlight - these are three. This means that the cost of the goods will necessarily include the cost of electricity that the farmer spent to light up the “path” to the hens.
So, farm products are more expensive, because feeding chickens with carotene feed is expensive. But even if you are willing to pay for color, you need to be alert.