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A kind of boar feed and preparation method thereof

A boar and feed technology, applied in animal feed, animal feed, bacteria, etc., can solve problems such as insufficient attention to boar nutrition, decline in boar reproductive performance, and inability to produce sperm normally, so as to enhance the body's anti-stress and Effects of disease resistance, improvement of reproductive performance, and improvement of acrosome integrity

Active Publication Date: 2020-08-14
XIAN GAOLING BRANCH SHAANXI ZHENGNENG FARMING TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although there are also boar feeds on the market, most of the boar feeds are likely to cause rapid fat gain, late sexual maturity, weak libido, abnormal testicular function, resulting in abnormal production of sperm, and ultimately lead to poor reproductive performance of boars. and declining health
At present, there are few studies on boar nutrition, which is due to the lack of attention paid to boar nutrition by producers, high cost, and limited breeds of breeding pigs in a single pig farm.

Method used

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  • A kind of boar feed and preparation method thereof
  • A kind of boar feed and preparation method thereof
  • A kind of boar feed and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031]Example 1 Preparation of Lactobacillus acidophilus CGMCC No.6499 bacterial powder

[0032] 1) Preparation of Lactobacillus acidophilus seed liquid: Inoculate the strains preserved on the slant of the test tube into an anaerobic tube containing 20 mL of MRS medium, and culture at a constant temperature for 16-24 hours at 37°C until the number of viable bacteria reaches 10 7 CFU / mL, inoculate at 1% in a 250mL Erlenmeyer flask filled with 100mL seed medium, culture anaerobically at 37°C for 16-24h, until the number of viable bacteria reaches 10 7 CFU / mL or more, as a seed solution for later use.

[0033] Seed liquid MRS medium is: peptone, 10.0g / L; beef extract, 8.0g / L; yeast extract, 4.0g / L; glucose, 20.0g / L; Tween 80, 1mL / L; dipotassium hydrogen phosphate, 2.0g / L; Sodium acetate trihydrate, 5.0g / L; Triammonium citrate, 2.0g / L; Magnesium sulfate heptahydrate, 0.2g / L; Manganese sulfate, 0.05g / L; Add distilled water to 1000mL, pH 6.2 ±0.2.

[0034] 2) Liquid submerged fer...

Embodiment 2

[0040] Example 2 Screening of Bacillus subtilis DZS11

[0041] 1. Primary screening

[0042] Collect 10 piglet feces samples, weigh 10g soil samples respectively, add 90mL sterile water to make bacterial suspension, treat in 80°C water bath for 20min, vibrate at 180r / min for 30min, gradually dilute to a suitable gradient, and spread on LB On the culture medium, 86 suspected bacillus strains were obtained.

[0043] Milk medium (for primary screening of protease): 5g skimmed milk dissolved in 50ml distilled water; 1.5g agar dissolved in 50ml distilled water, the two liquids were sterilized separately, when cooled to 45-50°C, the two liquids were mixed and poured on the plate , Serve with a milk tablet. Invert the plate overnight to dry the surface moisture, then spot the bacteria on the plate, mix and invert the plate, and set aside overnight. When preparing this medium, do not mix milk and agar to sterilize to prevent the milk from coagulating.

[0044] Starch hydrolysis pl...

Embodiment 3

[0066] Embodiment 3 Bacillus subtilis DZS11 bacteria powder preparation

[0067] Fermentation of Bacillus subtilis DZS11: The fermentation medium used is prepared as follows: 0.5% corn flour, 1% bean cake powder, 0.4% sucrose, 0.6% fish meal, 0.1% calcium carbonate, 0.1% potassium dihydrogen phosphate, 0.2% magnesium sulfate, sulfuric acid Ferrous 0.025%, manganese sulfate 0.025%. Prepare the fermented liquid in proportion, then adjust the pH to 7.2. After sterilizing at 121°C for 30 minutes, cool down to 37°C, inoculate seed solution with a bacterial age of 16 hours, inoculum amount of 3%, 37°C, keep the rotation speed at 300rpm, air ratio 1:0.4, tank pressure 0.05. Cultivate to 18h as the end point of fermentation, put the tank, and the number of viable bacteria of Bacillus subtilis DZS11 is 6.21×10 9 CFU / mL.

[0068] Spray-dried protective agent (0.8% of glycerol, 0.2% of sodium glutamate, 19% of cornstarch) was added to the fermented liquid, and then spray-dried at high...

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Abstract

The invention discloses a boar feed. The boar feed contains corns, bean pulp, fish meal, wheat germ, extruded soybeans, calcium hydrophosphate, mountain flour, salt, 50% choline chloride, a micro-ecological preparation, lysine, methionine, threonine, and 0.5-1 part of a boar premix. Per kilogram of the boar premix contains 3500-12000IU of vitamin A, 750-4500IU of vitamin D, 20-100IU of vitamin E, 4-35 mg of copper, 50-250 mg of iron, 40-150 mg of zinc, 16-80 mg of manganese, 0.2-0.8 g of L-carnitine, 5-15 g of omega 3 fish oil, 0.1-0.3 g of selenium yeast, and 0.5-2 g of medium-chain fatty acid MCT. VA, VE, carnitine, omega 3 fish oil and medium-chain fatty acid MCT are added into the boar feed disclosed by the invention; furthermore, the micro-ecological preparation in the invention is used in a matched manner; therefore, the boar sperm density and the total sperm number are increased; the sperm deformation rate of breeding boars is obviously reduced; and thus, the breeding performance of boars is greatly improved.

Description

technical field [0001] The invention belongs to the field of animal feed, and in particular relates to a boar feed and a preparation method thereof. Background technique [0002] According to statistics, the average annual litter size of multiparous sows in the world is 21 to 23 heads, while the average annual litter size of multiparous sows in my country is below 17, which is far below the world average. The level of reproductive performance of boars directly affects the quantity and quality of offspring and the economic benefits of pig farms, and nutrition is one of the main factors affecting the reproductive potential of boars. Although there are also boar feeds on the market, most of the boar feeds are likely to cause rapid fat gain, late sexual maturity, weak libido, abnormal testicular function, resulting in abnormal production of sperm, and ultimately lead to poor reproductive performance of boars. and declining health. At present, there are few studies on boar nutr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12N1/20A23K10/30A23K10/37A23K20/174A23K10/18A23K20/158
CPCY02P60/87
Inventor 连星
Owner XIAN GAOLING BRANCH SHAANXI ZHENGNENG FARMING TECH CO LTD
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