Crocodile feeding methods and supply and demand

First, method
1. Correct location The entire area is in good condition with no industrial pollution, pesticide pollution and domestic pollution. Adequate water supply, good water quality, fresh air, and no soil pollution. The fish ponds in the crocodile breeding base have fertile soil, environmental hygiene and fresh air.
2, fish pond facilities (1). Crocodile pond farming, a total area of ​​225 acres, each pond area of ​​1-2 acres, the bottom flat, silt ≤ 20CM, water depth 1-1.5 meters. There is a one meter high wall around the fish ponds to prevent crocodile running and outsiders from entering. The ratio of water surface to land area in the wall is approximately 1:1, which is conducive to the growth of crocodiles.
(2). Feed fish (tilapias, cockroaches, cockroaches) are cultured in soil ponds with a total area of ​​165 mu and each pond has an area of ​​8-10 mu. The bottom of the pond is flat, the sludge is ≤ 20 cm, and the water depth is 1.5-2 meters.
3, crocodile species selection The main varieties of crocodile breeding are Siamese crocodile, Nile crocodile, Crocodile.
4. Disinfect ponds and dry ponds in clear ponds and disinfect and adjust water quality before clearing the ponds.
5. The water quality monitoring base has a quality control working group responsible for quality and safety monitoring. In particular, strict control measures are applied to the surrounding environment of the base aquaculture waters. The personnel of the basic geological control team must pay close attention to whether the spraying of pesticides, water sources, or changes in water quality in the surrounding farmland will jeopardize the aquaculture production, and fisheries and environmental protection agencies will actively cooperate with them to identify pollution accidents. Remedial measures should be taken in a timely manner to prevent influencing the base production. We commissioned the Guangdong Fisheries Quality Supervision and Inspection Center to conduct an “evaluation report on the environmental quality of pollution-free agricultural production areas” on the water body of this base and its surrounding environment. The report concluded that the water quality of the breeding water in the base is in line with the “Quality of freshwater aquaculture water for non-environmental foods” ( NY5051-2001) requirements.
6, the choice of fry 1 choose healthy, disease-free, self-breeding breeds that have passed the inspection or crocodile seedlings imported from Thailand for stocking. 2 Select healthy and disease-free seedlings such as tilapia, cockroach and quail.
7, stocking density per mu to give body length 30-100 cm (3-10 kg) 200-300 crocodile seedlings, feed fish (tilapia, clams, cockroaches) stocking density as usual, the implementation of catching large stay small.
8. Feeding methods (1). The crocodile feeds all self-breeding, fresh feed fish (tilapias, oysters, clams), and fish ponds are regularly refilled with new water. The implementation of catching and keeping small, that is, crocodile reached more than 30 kilograms per tail, the capture processing and listing, has not reached the market specifications continue to grading culture.
(2). Tilapia, cockroach and clam are mainly fed with mixed feed, corn, wheat husk, etc., scientifically fed, and regularly used quicklime, beneficial microorganisms, and water quality improver, equipped with aerators, and aeration pumps water. The implementation of catching large and small, that is to achieve the feed specifications for the crocodile feed, if not meet the specifications continue to grading culture.
9. Daily management measures The base uses crocodile to feed the self-raised, fresh feed fish (tilapia, alfalfa, and clams), feeds in a unified manner, and manages business operations in a unified manner. We are responsible for the training of the technical staff of the base staff for the health care production of crocodiles, providing technical guidance services, and focusing on key links such as water quality control, seedling purchase, feed use, and disease prevention and drug use. The daily management measures include:
(1) Regular monitoring of aquaculture water quality, in which the water quality of the water source is tested once every 10 days, and the water quality of the aquaculture pond is tested every 15 days. The standard of NY5051-2001 is used, the PH value is 7-8.5, the transparency is about 30CM, and the dissolved oxygen is 4MG. /L or more. The water quality of this base was sampled and tested at the inlet and pond by the Fisheries Quality Supervision and Inspection Center of Guangdong Province. The 12 items tested included color, smell, taste, total coliform, mercury, cadmium, lead, chromium, arsenic, and copper. Fluoride, petroleum, 666, dripping, etc., all meet the requirements of “Water Quality of Non-pollution Food Freshwater Aquaculture” (NY5051-2001).
(2) Production personnel should adhere to the “Aquaculture Production Record” and record the species, source and growth of the seed, feed source and feed status, and water quality changes, and formulate a scientific breeding plan to promote the healthy growth of the cultured objects. .
(3) Correct use of fish feed, feed additives, and aquaculture medications. All crocodile was fed to the live tilapia, cockroach and cockroach farmed on this base. The crocodiles were put in a reasonable and even amount for each growth stage, so that the activities of crocodiles were observed every day, the water quality changes, and the weather conditions were determined flexibly. Feed the amount of feed every day, so that the crocodile eats well, no waste prevails, and it is forbidden to put in spoiled fish meat; the breeding of tilapia, clams and clams at this base is forbidden to use “three non-precious” feed and feed additive products. Prevent feed deterioration and expiration; do not use illicit drugs for the prevention and treatment of fish diseases. Disease prevention and control adopts the principle of “prevention first, prevention and control combined”, mainly biological agents, reducing the use of chemical drugs, and comprehensive measures to prevent fish diseases include: 1 Selecting healthy and disease-free, self-reprofessing breeds that have passed inspection or imported from Thailand Crocodile stocks are stocked. 2 Select healthy, disease-free seedlings such as tilapia, cockroach and quail. Fish seedlings are disinfected and sterilized before entering the pool; high-quality feeds are selected; and biological agents such as photosynthetic bacteria and water quality improvers are regularly used to regulate water quality.
At the same time, the constant replacement of fresh water and recycled water is used to continuously replace new water in the alligator ponds to ensure that the water is fresh. At the same time, the old water of the crocodile ponds is discharged to the fish ponds for tilapia, oysters and clams, making full use of them. The culture wastewater of the alligator pond ensures ecological balance and environmental sanitation.
(4). Focus on keeping warm winter crocodile not cold, when the water temperature drops to 15 °C, stop activities. In cold weather in winter, we covered the crocodile pool with thin film and poured water from the deep wells into the pond to ensure safe wintering of crocodile and other fish. At the same time, we increased the crocodile's livelihood and began eating in the winter to allow it to grow. development.
The above content is for reference only.

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