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Feed additive and feed for improving intestinal structure of pseudosciaena crocea and application of feed additive and feed

A technology of feed additive and large yellow croaker, which is applied in the field of feed and application, feed additive to improve the intestinal structure of large yellow croaker, can solve the problems of intestinal villi reducing antioxidant capacity, decline, and change intestinal barrier damage of large yellow croaker, and achieve relief Intestinal antioxidant damage, reduction of intestinal villi, and improvement of intestinal morphological changes

Pending Publication Date: 2022-04-22
OCEAN UNIV OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The problem to be solved by the present invention is to provide a feed additive, feed and application to improve the intestinal structure of large yellow croaker, and to change the intestinal barrier damage of large yellow croaker and the reduction of intestinal villi by adding its specific proportion of glycerol monolaurate in the feed and the decline of antioxidant capacity to solve the technical barriers in the process of oil source substitution in aquaculture

Method used

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  • Feed additive and feed for improving intestinal structure of pseudosciaena crocea and application of feed additive and feed
  • Feed additive and feed for improving intestinal structure of pseudosciaena crocea and application of feed additive and feed
  • Feed additive and feed for improving intestinal structure of pseudosciaena crocea and application of feed additive and feed

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Embodiment 1

[0020] Embodiment 1, use this method to carry out feed manufacturing and breeding management

[0021] 1. Experimental design and experimental feed formula

[0022] Based on the large yellow croaker breeding soybean oil substitute feed formula used in the laboratory in previous years, feed additives containing different mass ratios of glyceryl monolaurate were added to the basic formula, so that the mass ratios of glyceryl monolaurate in the feed were 0.02%, 0.04% and 0.08% (ie 200 mg / kg, 400 mg / kg and 800 mg / kg). In addition, the conventional fish oil fed group was used as the negative control group. The feed formulation is shown in Table 1.

[0023] Table 1 Formula and crude ingredients (% dry ingredients) of experimental feed

[0024]

[0025] 1 White fish meal (74% crude protein, 12.6% crude fat); high-grade krill meal (53.18% crude protein, 13% crude fat); dehulled soybean meal (46.68% crude protein, 0.33% crude fat); high-gluten flour (19.66 % crude protein, 0.98 ...

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Abstract

The invention relates to a feed additive for improving intestinal structures of large yellow croakers, feed and application, and belongs to the field of nutritional feeds for aquatic animals. The feed additive comprises glyceryl monolaurate. The invention further provides a feed containing the feed additive, and the mass percent of the glyceryl monolaurate in the feed is 0.04%. The invention further provides application of the feed additive in improving the intestinal structure of the large yellow croaker, and the application time is 70 days or longer. The feed disclosed by the invention can effectively improve intestinal morphological change, intestinal villus reduction, intestinal perimeter ratio reduction and intestinal barrier injury caused by replacement of fish oil with soybean oil; and intestinal antioxidant damage caused by replacement of fish oil with soybean oil is relieved.

Description

technical field [0001] The invention belongs to the field of nutritional feed for aquatic animals, and in particular relates to a feed additive for improving the intestinal structure of large yellow croaker (Larimichthyscrocea), feed and application thereof. Background technique [0002] Large yellow croaker belongs to the order Perciformes of the Osteichthyes, the Totoaceae family, and the genus Yellow Croaker. It is mainly distributed in the southeast coastal waters of my country. Its meat is delicious and has certain medicinal value. It is a unique seawater economic fish in my country. According to the 2021 China Fishery Statistical Yearbook, the aquaculture output of large yellow croaker exceeds 250,000 tons, and it is the seawater economic fish with the largest aquaculture output in my country. [0003] With the rapid development of my country's aquaculture industry in recent years, the demand for fish oil, a high-quality fat source for fish feed, is also expanding, and...

Claims

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Application Information

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IPC IPC(8): A23K50/80A23K20/158
CPCA23K50/80A23K20/158Y02A40/818A23K50/30A23K50/75
Inventor 艾庆辉唐宇航张州王震麦康森徐玮
Owner OCEAN UNIV OF CHINA
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