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Application of yeast culture in preparation of feed capable of improving reproductive performance and relieving constipation of sows

A technology of yeast culture and reproductive performance, applied in the field of animal breeding feed, can solve problems such as less research

Inactive Publication Date: 2017-05-17
北京中农弘科生物技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] But, in the prior art, the research of yeast culture mostly is in the research that improves animal feed conversion rate, promotes the immune function of livestock and poultry body, reduces mortality and improves environment etc., and sow reproductive performance and sow constipation influence There are few studies. Therefore, it is of great significance to use yeast culture as a sow feed additive to improve sow reproductive performance and improve sow constipation.

Method used

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  • Application of yeast culture in preparation of feed capable of improving reproductive performance and relieving constipation of sows
  • Application of yeast culture in preparation of feed capable of improving reproductive performance and relieving constipation of sows
  • Application of yeast culture in preparation of feed capable of improving reproductive performance and relieving constipation of sows

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Experimental program
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Effect test

Embodiment 1

[0028] Embodiment 1, the preparation of yeast culture

[0029] 1. Activation of slant strains: inoculate the Saccharomyces cerevisiae with the preservation number of CGMCC No.2.399 frozen and preserved on the slant medium containing malt extract powder 130g / L, chloramphenicol 0.1g / L, and agar 2%. Keep the temperature at 30°C and culture for 48 hours to obtain activated yeast strains.

[0030] 2. Preparation of seed liquid: Inoculate the activated yeast strain with 1 loop into liquid medium containing malt extract powder 130g / L, chloramphenicol 0.1g / L; pH value is 6.5, and shake at a constant temperature of 30°C Bed culture, rotation speed 160r / min; culture 24h.

[0031] 3. Liquid aerobic fermentation: Inoculate the prepared seed liquid with 20% inoculation amount into a new liquid culture medium containing malt extract powder 130g / L, chloramphenicol 0.1g / L; pH value 5.6 Expanded culture was carried out in the tank, the ventilation rate was controlled at 2 L / min, the temperat...

Embodiment 2

[0035] Embodiment 2, sow reproductive performance and the impact test of sow constipation

[0036] 1. Feed Preparation

[0037] The basic diet used in this experiment included corn, soybean meal, wheat bran, soybean oil, sodium chloride, 50% choline chloride, stone powder, calcium hydrogen phosphate, 78% L-lysine, 98% DL-methionine, Premix, wherein, the premix provides vitamin A, 10500IU per kilogram of ration; vitamin D 3 , 1500IU; Vitamin E, 15IU; Vitamin K 3 , 1.6mg; Vitamin B 1 , 1.5mg; Vitamin B 2 , 3.0mg; Vitamin B 6 , 1.5mg; Vitamin B 12 , 0.015mg; Niacin, 22.5mg; Pantothenic acid, 15mg; Biotin, 40mg; Folic acid, 2.5mg; Manganese (MnSO 4 ·H 2 O), 40 mg; Iron (FeSO 4 ·H 2 O), 85mg; Zinc (ZnSO 4 ·H 2 O), 75 mg; Copper (CuSO 4 ·5H 2 O), 1.5 mg; iodine (Ca(IO 3 ) 2 ), 0.09mg; Selenium (Na 2 SeO 3 ), 0.03mg of mixture.

[0038] The addition amount of each component of the above-mentioned basal diet is shown in Table 1 below.

[0039] 2. Test process

[0040...

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Abstract

The invention discloses an application of yeast culture in preparation of feed capable of improving reproductive performance and relieving constipation of sows. The yeast culture is prepared with a method comprising the following steps: saccharomyces cerevisiae with the preservation number being CGMCC NO.2.399 is subjected to slant strain activation, the obtained yeast strain is subjected to inoculation continuously, seed fermentation broth is prepared and subjected to liquid aerobic fermentation and solid anaerobic fermentation, an obtained solid fermentation product is dried and ground, and a yeast culture is obtained. Tests prove that after added to the feed of the sow in the latter half of gestation and lactation period, the yeast culture prepared with the process can obviously relieve constipation of sows in the latter half of gestation and lactation period, remarkably increase the healthy piglet number of the sows, weaning piglet number and weight of weaning litter, reduce stillbirth number during sow parturition, shorten interval between weaning and sow estrus, thereby further improving the reproductive performance of the sows.

Description

technical field [0001] The invention relates to the technical field of animal breeding feed, in particular to the application of yeast culture in preparing feed for improving reproductive performance and constipation of sows. Background technique [0002] At present, the productivity level of sows in my country is relatively low. According to relevant statistics, in my country's large-scale home farms, each sow can provide only about 15 to 18 weaned piglets per year, while in 2008 the United States and other developed countries have reached 20 to 25 piglets. The main factors causing the low productivity of sows in my country are insufficient sow milk, severe constipation, low management level and diseases. [0003] Yeast culture (yeast culture, YC) refers to complex fermentation products obtained by yeast in a specific medium under certain process conditions, including cell metabolites (including polypeptides, organic acids, amino acids, nucleic acids, enzymes, etc.) , unk...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23K50/30A23K10/12A23K10/37A23K10/30A23K10/38
CPCY02P60/87
Inventor 刘明杨凤娟董彦君孙敏
Owner 北京中农弘科生物技术有限公司
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