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Livestock and poultry feed additives and application thereof

A feed additive, livestock and poultry feed technology, applied in application, animal feed, animal feed, etc., can solve problems such as uneven effects and lack of research data

Pending Publication Date: 2019-12-27
CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, there are many types of additives currently used on gestating sows, with variable effects and lack of research data, so it is necessary to develop a variety of feed additives suitable for improving reproductive performance and milk composition of lactating sows

Method used

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  • Livestock and poultry feed additives and application thereof
  • Livestock and poultry feed additives and application thereof
  • Livestock and poultry feed additives and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The preparation method of embodiment 1 forsythia extract

[0031] Forsythia fruit was purchased from Tongrentang Pharmacy in Beijing, the place of origin is Shaanxi, China, 100g of forsythia dried fruit was taken, crushed into powder, 500mL 80% ethanol was added to the powder, and ultrasonic wave was used for 1h (ultrasonic cleaning machine, KQ5200DE, Kunshan Ultrasonic Instrument Co., Ltd. , ultrasonic power 500W, frequency 40KHz), then let stand, filter, collect the filtrate, repeat the above operation three times; combine the three filtrates, carry out reduced pressure concentration with a rotary evaporator, and obtain the ethanol extract of Forsythia japonicus; the extract is freeze-dried, The crude extract of forsythia was obtained; the crude extract was mixed with water, extracted three times continuously with dichloromethane, then the solvent was recovered by rotary evaporation, and dried overnight with a fume hood to obtain the dichloromethane extract. After ana...

Embodiment 2

[0032] Embodiment 2 Improve the reproductive performance of multiparous sows and improve the method of breast milk composition

[0033] This example provides two kinds of feed additives for sows in late pregnancy and their usage methods. One additive is the forsythia extract prepared in Example 1. Add 100mg / kg of basal ration to the feed of pregnant sows, feed it from the 85th day of pregnancy to the 107th day of pregnancy, and feed the lactating sow feed (containing 100mg / kg forsythia extract) from the 107th day of pregnancy to delivery matter) added continuously. Using forsythia extract as a feed additive can significantly increase litter weight gain of lactating sows, reduce the mortality rate of newborn piglets, and increase the content of milk fat and milk protein in colostrum. Another additive is 25-hydroxyvitamin D3 (25-OH-D 3 ), a white homogeneous powder. Add 50 μg / kg basal diet to the feed of pregnant sows, feed from the 85th day of pregnancy to the 107th day of ...

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Abstract

The invention discloses livestock and poultry feed additives and application thereof. As for one of the feed additives, dried fructus forsythia fruits are taken as raw materials, a fructus forsythia extract is obtained through alcohol extraction, main active components in the fructus forsythia extract comprise phillygenin, phillyrin, forsythialan A and forsythoside A, and the other feed additive is 25-hydroxyl vitamin D3. According to two methods for improving reproductive performance of multiparous sows and improving breast milk components through the additives at the latter half of gestation, by using the fructus forsythia extract, the newborn litter weight of lactating sows can be increased significantly, the mortality rate of newborn piglets is decreased, and the content of milk fat and milk proteins in colostrums is increased; and by using the 25-hydroxyl vitamin D3, the average newborn piglet weight of the lactating sows can be increased significantly, and the content of the milkfat and the milk proteins in the colostrums is increased. Effective means are provided for improving the immunity function of the sows and effectively resisting stress caused by metabolic enhancementduring gestation, parturition and lactation, and thus the development of sow breeding industry is promoted.

Description

technical field [0001] The invention relates to a feed additive for livestock and poultry and its application. Background technique [0002] In my country, the low number of weaned piglets produced by sows is the bottleneck hindering the pig industry. The main reason is that sows have poor immune function and cannot effectively resist the stress caused by enhanced metabolism during pregnancy, parturition and lactation, resulting in a decline in farrowing performance and lactation ability (Agarwal et al., 2005; Ao Jiangtao et al., 2016). Another reason is the low survival rate of piglets: piglets experience a variety of oxidative stress from birth to weaning, and the immature immune system is difficult to effectively remove excess free radicals, resulting in abnormal intestinal function, affecting the absorption and utilization of nutrients, and causing diarrhea , growth retardation, and even death (Hu et al. 2013; Yin et al., 2013). Therefore, improving the stress resistan...

Claims

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Application Information

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IPC IPC(8): A23K10/20A23K10/30A23K20/121A23K20/126A23K20/163A23K20/174A23K50/30
CPCA23K10/20A23K10/30A23K20/121A23K20/126A23K20/163A23K20/174A23K50/30
Inventor 朴香淑龙沈飞张连华
Owner CHINA AGRI UNIV
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