Give reasonable calcium supplementation for laying hens

 Do you have a chicken farm, if yes, you can come to see this article.

Calcium is an indispensable feed for laying hens. If there is insufficient calcium in the feed, it will directly affect egg production, egg shell thickness, egg fertilization rate, chick hatching rate and serum calcium content. Go to see the livestock feed processing line.

1. Calcium supplementation time: When hens are in continuous production, they usually lay eggs in the morning, and the next yolk is discharged from the ovary into the fallopian tube half an hour after the egg is laid. Therefore, continuous-producing hens do not need calcium supplementation in the morning. After 14:00 in the afternoon, with the increase of eggshell deposition rate, the amount of calcium feed that chickens eat also increases. Therefore, in order to make laying hens produce more eggs and produce good eggs, it is best to supplement calcium feed for laying hens from 12:00 to 18:00 every day.

2. Calcium supplementation method and effect: The calcium source feed can be placed alone, and the chicken can eat freely, or it can be mixed with the feed. According to the experiment, calcium source feed has a good effect on improving egg production, egg fertilization rate, hatching rate of chicks, serum calcium content and egg shell thickness.

3. The amount of calcium supplementation: The production of laying hens requires calcium supplementation, but it is not the more the better. Generally, laying hens need 4.4 grams of calcium per egg, and the calcium content in the diet is 3.0%-3.5% to meet the production needs of laying hens. If the calcium content in the diet exceeds 4.0%, adverse symptoms will occur: on the one hand, the palatability of the feed will become poor, and the feed intake of the flock will decrease; on the other hand, it will cause the accumulation of urate in the laying hens and cause indigestion And cause diarrhea, severe gout symptoms will appear. Therefore, calcium supplementation for laying hens must be paid attention to in a timely and appropriate amount.

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Different stages--physiological features of laying hens

Improper management will directly affect the physique and egg production of laying hens in the later stage.

To do a good job of feeding and management in the early stage, you must first understand the physiological characteristics of laying hens. We generally divide it into three stages, the brooding stage, the breeding stage, and the egg-laying stage. Do a good job in the early feeding and management, mainly in the brooding and breeding stages.

1. The brooding stage

1-6 weeks old is the brooding period of commercial laying hens. The digestive function of chicks is not perfect after hatching. The need for nutrients depends on two sources. One is to supply nutrient-rich and digestible, high-protein feed; the other is to rely on The nutrients provided by the yolk that are not fully absorbed in the chick's own abdomen. The brooding period is the period of the phylogeny of the chicks. The various tissues and organs of the chicks develop gradually from imperfect or non-functional functions. The chicks have poor resistance to various external stress factors and mainly rely on the protection of maternal antibodies. Diseases are highly susceptible to environmental influences, resulting in pathological phenomena and even death.

2. Breeding stage

7-18 weeks of age is the breeding period. The breeding period is the vigorous period of growth and development. The functions of each system of the body have basically been developed, so the absorbed nutrients are basically transformed into the growth of bones and muscles. With the growth of laying hens, their own The deposition ability of calcium substances will increase, and fat deposition will also increase. If the feed mix is improper, it will easily lead to obesity of the body, which will seriously affect the egg production and egg quality of the laying hens in the later stage. Lay the foundation for the long duration of the peak period and the high egg production rate.

At the same time, it should be noted that the breeding stage is a critical period for the growth of the body. In addition to ensuring the balance of nutrition in all aspects, it is necessary to timely transfer the group, timely change the laying hen feed, increase the light time, and create suitable temperature and humidity for the chickens. and comfortable environment. Go to see the animal feed machine.

3. Egg-laying stage

Due to the physiological characteristics of chickens during the laying period, the chickens have strong hormone secretion, strong reproductive system metabolism, light sensitivity, high nutrient metabolism rate, high production intensity and poor resistance. All kinds of stress should be reduced, the occurrence of unexpected events should be avoided as much as possible, and the peak period of egg production should be maintained for a longer time (12 months).

It is recommended to weigh the brooding and rearing stage once a week, and replace the feed of the next stage in time according to the weight standard. When the body weight reaches 1350 grams, it is necessary to increase the light.

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Some tips on meal feed for fish

 Here are some tips on meal feed for fish.

Cake meal is the residual part of oilseeds after extracting most of the oil, including soybean cake, peanut cake, cottonseed cake, rapeseed cake, sesame cake, sunflower cake, or meal. This kind of feed has high crude protein content and is the main protein source in fish feed. In recent years, it has been widely used to replace expensive fish meal in fish compound feed with good effect. However, this kind of feed generally has the following shortcomings: 1. Low methionine content, more phosphorus and less calcium, lack of carotene, etc. ②It contains some toxic substances, which affect its palatability and digestibility. ③ In the case of excessive heating, the protein will be denatured and the protein digestibility will decrease. For safety reasons, the following precautions should be taken when using cake meal in fish feed:

1. Because of the harmful substances such as antitrypsin, the raw soybean meal has poor palatability and low utilization rate of feed protein. It should be used after proper heat treatment (110℃, 3 minutes).

2. Cottonseed meal contains gossypol and other harmful substances. Note that the proportion of adult fish feed should be controlled below 30%, and the amount of cottonseed meal in parent fish feed should not exceed 5%. When the proportion in the adult fish feed exceeds 15%, it must be detoxified before use. There are many methods for detoxification of gossypol, such as cooking method, alkaline water soaking method, ferrous salt method, yeast fermentation method, etc. Among them, ferrous sulfate method is the most simple and thorough. The amount of ferrous sulfate added is generally the free gossypol in cottonseed cake. 5 times the content. Hope you can see the diesel engine fish feed pellet machine.

3. Rapeseed meal contains a series of toxins or anti-nutritional factors. In order to improve its use effect and avoid poisoning, it is generally used in limited quantities (the dosage should be controlled below 20%) and strengthened with matching (used in conjunction with fish meal and bean cake) or adding Lysine. When the dosage is large, it should be detoxified. At present, the method of burial or fermentation is generally adopted, and it can also be detoxified by soaking in organic solvents.

4. Peanut cake contains antitrypsin, so it should be heat-treated before use. Generally, the antitrypsin is controlled at about 120℃. Shelled peanut cake has low crude protein content, high crude fiber content and low feed value, so it is not suitable for carnivorous and omnivorous fish, and herbivorous fish are also limited in use.

5. Sunflower cake has good palatability, and the quality of shelled cake is comparable to that of soybean cake, and it is non-toxic. The content of calcium, phosphorus and vitamin B group is higher than that of soybean cake, so it is an excellent protein source in fish feed. However, the shelled sunflower cake contains a lot of lignin, which not only makes the crude fiber difficult to digest, but also reduces the digestibility of nutrients. Generally, the dosage should be small, and it should not be used as meat and miscellaneous fish feed.

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