TWI535386B - Aquatic animal feed - Google Patents

Description

Aquatic animal feed

The present invention relates to a feed, and more particularly to an aquatic animal feed.

Probiotics are organisms or substances that promote the balance of intestinal microbes. In general, lactic acid bacteria and Bacillus spp. are the most common probiotics. Probiotics can also produce good results in aquaculture. Recent studies have shown that feeding probiotics can improve the immunity of the animals being fed and resist Streptococcus sp. , Vibrio harveyi , The ability of common pathogens such as Vibrio nigripulchritudo and Vibrio parahaemolyticus , such as grouper, grass shrimp, etc., and improves the survival rate of the fed animals.

Generally, there are two methods for adding probiotics to the feed of aquatic animals. One is to directly mix the dried probiotic powder into the feed, and the other is to process the raw materials together in the feed processing process. However, the feed made from the probiotic powder directly mixed into the water, the probiotic powder is easily dispersed everywhere, so the probability of feeding the probiotics to the feeding object is very low. Although the feed produced by the co-processing can embed the probiotics therein, the feeding rate of the probiotics ingested by the feeding object is improved, but the activity of the probiotics is easily destroyed by the high temperature during processing in the manufacturing process. In addition, the general feed is not a food of aquatic animals in the original environment, and eating the feed is prone to nutritional malnutrition.

In view of the above problems, the conventional aquatic animal feed obviously needs to be improved.

The invention provides an aquatic animal feed, which can effectively improve the feeding rate of the probiotics to the fed object, and retain the activity of the probiotics while avoiding the problem of uneven nutrition.

In order to achieve the above object, the present invention provides an aquatic animal feed comprising at least one carrier, a film layer and a plurality of probiotics, wherein each of the carriers is a dried body of microalgae, the film layer is coated on the carrier, and the like Probiotic strains are located in the film layer.

Thereby, the microalgae which can be eaten by aquatic animals is used as a carrier, and the probiotics are aggregated on the surface of the carrier at room temperature to form a film layer covering the entire carrier, so that the probiotic bacteria can be attached to the surface of the carrier in a large amount, and retained. Its original activity enables the fed object to ingest a large amount of probiotics while eating the carrier without the problem of uneven nutrition.

Detailed features of the invention will be described in the detailed description which follows. However, it should be understood by those of ordinary skill in the art that the present invention is not limited by the scope of the invention.

10‧‧‧Aquatic animal feed

20‧‧‧ Carrier

30‧‧‧film layer

40‧‧‧Probiotics

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic view of a preferred embodiment of the present invention, mainly showing the case where a single carrier is covered by a film layer.

Fig. 2 is a schematic view showing a preferred embodiment of the present invention, mainly showing the case where a probiotic is attached to the surface of the carrier.

Figure 3 is a schematic view of another preferred embodiment of the present invention, mainly showing the case where a plurality of carriers are covered by a film layer.

The technical contents and features of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in Figures 1 to 2, the aquatic animal feed 10 according to a preferred embodiment of the present invention comprises a carrier 20, a film layer 30 and a plurality of probiotics 40.

The carrier 20 is a strain of Tetraselmis sp. , Chlorella spp. , Nannochloropsis sp. , Chaetoceros sp. , Skeletonema sp. , isotonic gold One of different kinds of microalgae such as Isochrysis sp. , Schizochytrium sp. , Spirulina sp. or Phormidium sp. , these species of microalgae are aquatic Animals have better palatability. Wherein, the microalgae system as the carrier 20 has died and is dried to be a dried remains of the microalgae, and the maximum outer diameter of the microalgae is between 3 micrometers or more and 500 micrometers or less.

The film layer 30 is a biofilm composed of an extracellular polymeric substance (EPS) secreted by the probiotic 40, which is formed on the surface of each carrier 20, and covers the entire carrier 20, as shown in FIG. Shown. Here, the film layer 30 is formed by placing the carrier 20 and the probiotic 40 together at room temperature for 24 hours to form a film layer 30 on the surface of each carrier 20.

A plurality of probiotics 40 are distributed in the film layer 30, and the probiotics 40 used in the present embodiment are Bifidobacterium bifidum , Enterococcus faecalis , Enterococcus faecium , Enterococcus lactis , Lactobacillus acidophilus , Lactobacillus casei , Lactobacillus lactis , Lactobacillus plantarum , Pediococcus acidilactici , A mixture of one or more of a strain such as Pediococcus pentosaceus , Bacillus subtilis , Phodopseudomonas pulustris , or Bacillus licheniformis .

3 is another embodiment of the present invention, mainly illustrating that the aquatic animal feed 10 provided by the present invention is not limited to being composed of a single carrier 20, but also consists of a plurality of carriers 20, each of which is respectively covered by a film layer 30. package Covered, and a plurality of probiotics 40 are distributed in the film layer 30. Wherein, each of the carriers 20 may be the same kind of microalgae, or each of the carriers 20 is a different kind of microalgae, and the composition contains a single microalgae or an aquatic animal feed 10 containing one or more different kinds of microalgae.

Because microalgae are rich in protein, unsaturated fatty acids, cellulosics, vitamins and minerals, they are the main source of food for many freshwater and marine organisms, especially juveniles and invertebrates. Therefore, the microalgae is used as the carrier 20 of the probiotic 40, and the microalgae is used for aquatic animals to eat, has better palatability, nutrient composition and suspension property, and then accumulates on the surface of the carrier 20 to form a biofilm through the probiotic 40. The probiotic 40 is allowed to adhere to the surface of the carrier 20 in a large amount by the film layer 30, and the aquatic animals to be fed, such as Litopenaeus vannamei , Penaeus monodon , Penaeus chinensis , and plaque Shrimp ( Penaeus japonicus ), etc., can also eat a large amount of probiotics 40 attached to the surface of the carrier 20 while eating the carrier 20, thereby increasing the feeding rate of the probiotics 40 by the feeding object, and due to the formation of the film layer 30. It is at room temperature, so it does not destroy the original activity of probiotic 40 during the manufacturing process of the feed, but still effectively retains the activity of probiotic 40 in the feed, and avoids the long-term consumption of general feed. Unequal nutrition problems.

It is to be understood that the foregoing detailed description of the drawings is merely illustrative of the embodiments of the invention </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt;

10‧‧‧Aquatic animal feed

20‧‧‧ Carrier

30‧‧‧film layer

40‧‧‧Probiotics

Claims (4)

An aquatic animal feed comprising: at least one carrier, each of which is a dried body of microalgae; a film layer coated on each of the carriers; and a plurality of probiotics located in the film layer. The aquatic animal feed according to claim 1, wherein the microalgae are Tetraselmis sp. , Chlorella spp. , Nannochloropsis sp. , Chaetoceros sp. , Skeletonema sp. , Isochrysis sp. , Schizochytrium sp. , Spirulina sp. or Phormidium sp . The aquatic animal feed according to claim 2, wherein the microalgae has an outer diameter of from greater than or equal to 3 micrometers to less than or equal to 500 micrometers. The aquatic animal feed according to claim 1, wherein each of the probiotic strains Bifidobacterium bifidum , Enterococcus faecalis , Enterococcus faecium , Enterococcus lactis , Lactobacillus acidophilus , Lactobacillus casei , Lactobacillus lactis , Lactobacillus plantarum , Pediococcus acidilactici , Pediococcus pentosaceus ), Bacillus subtilis , Phodopseudomonas pulustris or Bacillus licheniformis .