Grass carp feeding should pay attention to the problem
Grass carp is characterized by its fast growth, tender meat, delicious taste and high nutritional value. Grass carp is an important freshwater cultured fish in China due to its short food chain, easy feeding, and high risk resistance. Grass carp is dominated by grasses in its natural state, which is a typical herbivorous fish. Under artificial feeding conditions, various aquatic weeds, terrestrial grasses, and concentrate feeds can be fed, and the source of the feed is relatively extensive. The growth of grass carp is directly determined by the feed intake. There are many factors influencing the feed intake of grass carp. The feeding method should be determined according to the fish's specifications, breeding environment, local climatic conditions and market conditions, and the appropriate feed should be selected. , Scientific feeding methods, reasonable control of feeding amount, and appropriate feeding time, so as to achieve the purpose of promoting the growth of fish, improving feed utilization, reducing production costs, and improving the economic benefits of breeding. Feeding Behavior and Digestive Utilization Characteristics of Grass Carp Since grass carps do not have real teeth and chewing function, the feed cannot be stirred and ground after the feed is ingested, but the feed is directly swallowed into the esophagus. If the feed intake is too long, the grass carp feeds this type of feed and spits it out, and then re-injects a feed with a suitable particle size, or cuts off the long-sized feed and then swallows it. However, this process will cause grass carp to consume too much physical energy and increase the difficulty of feeding. Therefore, the feed grain size of grass carp should be suitable and the particle size should not be too long. After the general grass carp is fed into artificial feed, the size of the feed pellet is mainly determined by the splitting of the grass carp. The diameter of the suitable feed pellet is usually 1/4 of the diameter of the grass carp, and the ratio of the length to the diameter of the pellet feed is best. For a ratio of 1.53:1, the optimum ratio of length and diameter of the extruded feed pellets is 1:1. Grass carp has no stomach and no stomach fish. Feed intake is mainly digested by digestive enzymes secreted by the liver, pancreas, and intestines. The gut of grass carp is three times its length. Grass carp usually chooses to feed before the emptying of the intestine, and feed intake in the hungry state begins to increase. If the hungry time is too long, it will suppress appetite and affect grass carp. The growth. The factors affecting the digestive utilization of feedstuffs of grass carp mainly include the adhesion of feed pellets, the fineness of feed raw materials, and so on. Grass carp will have a certain adaptation time to feedstuffs. This period of time is mainly the formation of relatively stable relative dominant flora in the intestine and the digestive environment. Therefore, the feed cannot be changed frequently in the process of grass carp breeding, otherwise it will affect the feeding level of grass carp and Intestinal health. Influencing factors of feed intake of grass carp The growth of grass carp is determined by the amount of feed it feeds. The level of food intake is affected by many factors, including feed factors, environmental factors, and self factors. Feed factors: Feed factors that affect the feed intake of grass carp mainly include the specifications of the feed pellets, the hardness and hardness of the feed pellets, the surface finish, and the taste of the feed. These traits have a significant effect on grass carp feeding and swallowing feed. If the particle size of the feed pellet is too long, grass carp can't swallow it at one time. This will inevitably affect the feed intake of grass carp. Appropriate feed form and good palatability will increase the feed intake of grass carp. In addition, the quality of feed has a certain relationship with the feed intake of grass carp. Environmental factors: A suitable culture environment will increase the appetite of grass carp and increase its food intake. Studies have shown that the digestive utilization of grass carp is positively correlated with the temperature of the feed, but the temperature should not be too high, otherwise it will not only be counterproductive, but also adverse to the health of grass carp, and good water quality, also has a feed for grass carp important influence. Self-factor: The growth of grass carp can be divided into three stages, namely fry, fingerlings and adult fish. Different growth stages require different amounts of feed and nutrients. In natural conditions, the grass carp is mainly fed plankton, and the demand for protein is high. With the growth and development of grass carp, the dietary habit begins to change to herbivorous, and the demand for protein gradually decreases. Feeding technology of grass carp feed: Grass carp has fast growth, high yield, and easy feeding, but if the feeding technology is not reasonable, it will not achieve more satisfactory economic benefits. Therefore, to master scientific feed feeding technology, it is necessary to do To the following three points: Choosing suitable feeds, feeds for grass carp are mainly pellets, puffed feeds, powdered feeds, etc. The best is puffed feeds, followed by pellets. When selecting the feed, select the appropriate feed according to the size of the fish body, including the particle size, hardness and palatability. If the feed is not properly selected, for example, the size of the feed pellets is too large or too small, and poor palatability will affect the feeding of grass carp and reduce the utilization of feed. Select the appropriate amount of feed, the amount of feed should be determined according to the water temperature, dissolved oxygen, water quality, fish feeding conditions, etc., and to control the amount of feeding and feeding times. The daily feeding amount is not certain. Generally, it is best to select the sun for 2 hours after the sun comes out. The amount of dissolved oxygen reaches a certain level and the feeding effect is the best; if it encounters continuous rainy days or hot weather, it will need to be fed less or not. Hey. The number of daily feeding of grass carp is 2 to 4 times, and the time interval is 3 hours to 4 hours. Feeding methods: Time, quantitative, positioning, and quality should be set when feeding feeds, and feeding should be based on weather conditions, water quality, and fish activity. Generally, in order to ensure that the size of the adult fish is uniform, conditional feeds can be used. If you do not have a feeder, try to do it evenly. When feeding compound feed, some green feeds can be fed together at the same time, which is favorable for the grass carp to enhance its health and can reduce the cost of cultivation. Green feed can be fed once a day, after 2 hours of feeding the compound feed, or alternatively at night. During the feed feeding process, observe the food field, observe whether there is feed remaining in the water, and observe the growth of grass carp so that the feeding amount of the feed can be adjusted in time. Hair Wash Shampoo,Natural Shampoo,Hair Nourishing Shampoo,Ginger Hair Shampoo Wuxi Keni Daily Cosmetics Co.,Ltd , https://www.kenidailycosmetics.com