Breeding method for improving reproductive performance of sows

Abstract

The invention provides a breeding method for improving the reproductive performance of sows, and the breeding method comprises the following steps: (1) adding a functional nutritional composition into a sow feed from two weeks before delivery to the day of delivery of the sows; (2) feeding the sow with functional fat powder from 3 days before delivery to 1-3 days after delivery; and (3) from the postpartum period to the weaning period of the sow, adding the functional nutrient composition into the sow feed. The breeding method provided by the invention can relieve the production stress of the sows, reduce postpartum inflammation of the sows, promote rapid postpartum recovery of the sows, shorten the interval of weaning oestrus of the sows and improve the reproductive performance of the sows.

Description

Technical Field

[0001] The invention belongs to the technical field of sow breeding, and in particular relates to a breeding method for improving the reproductive performance of sows. Background Art

[0002] Farrowing is a crucial part of pig farm operations. Scientific care before and after farrowing directly impacts the sow's reproductive performance. With the advancement of breed selection and research, modern sows are farrowing larger and larger litters. This has led to problems such as prolonged farrowing, an increase in weak piglets and stillbirths, an increased incidence of postpartum uterine inflammation, and slow recovery.

[0003] The sow's slow postpartum recovery and poor postpartum body condition not only affect the growth of suckling piglets, but also further affect the sow's normal secretion of reproductive hormones, resulting in the sow's inability to estrus in time after weaning.

[0004] It is crucial to promote the recovery of sows' physical condition after parturition. However, the importance of scientific breeding before and after sow delivery is often overlooked in current breeding. This leads to high stress on sows during parturition, long delivery process, large physical loss, severe postpartum inflammation, slow recovery of physical condition after parturition, long interval between weaning and estrus or even no estrus in sows, which seriously affects the reproductive performance of sows.

[0005] Therefore, how to provide a method that can effectively reduce sow farrowing stress, improve sow reproductive performance, and promote the growth of suckling piglets has become an urgent problem to be solved. Summary of the Invention

[0006] In response to the shortcomings of the existing technology, the present invention aims to provide a breeding method for improving the reproductive performance of sows. The breeding method provided by the present invention can alleviate sows' labor stress, reduce sows' postpartum inflammation, promote sows' rapid postpartum recovery, shorten the sows' weaning-estrus interval, and improve sows' reproductive performance.

[0007] In order to achieve the purpose of the invention, the present invention adopts the following technical solutions:

[0008] The present invention provides a breeding method for improving the reproductive performance of sows, comprising the following steps:

[0009] (1) Adding the functional nutritional composition to the sow feed from two weeks before farrowing to the day of farrowing;

[0010] (2) Feed sows with functional fat powder from 3 days before farrowing to 1-3 days after farrowing;

[0011] (3) Add the functional nutritional composition to the sow feed from the time of sow farrowing to the time of weaning and estrus.

[0012] The above method can effectively relieve sow production stress, reduce sow postpartum inflammation, promote sow rapid postpartum recovery, shorten sow weaning and estrus interval, and improve sow reproductive performance by using specific functional nutritional compositions and functional fat powder at different periods.

[0013] Preferably, the functional nutritional composition comprises, by weight, 30-50 parts of plant extract, 0.02-0.1 parts of tomatine, 0.01-0.1 parts of paeoniflorin, 0.01-0.1 parts of calendulaside, and 50-80 parts of wall materials.

[0014] The amount of the plant extract can be 30 parts, 35 parts, 40 parts, 45 parts or 50 parts, etc., the amount of tomatine can be 0.02 parts, 0.03 parts, 0.04 parts, 0.05 parts, 0.06 parts, 0.07 parts, 0.08 parts, 0.09 parts or 0.1 parts, etc., and the amount of paeoniflorin can be 0.01 parts, 0.02 parts, 0.03 parts, 0.04 parts, 0.05 parts, 0.06 parts, 0.07 parts, 0.08 parts, etc. The number of parts of the present invention may be 0.01 part, 0.02 part, 0.03 part, 0.04 part, 0.05 part, 0.06 part, 0.07 part, 0.08 part, 0.09 part or 0.1 part, etc. The number of parts of the wall material may be 50 parts, 55 parts, 60 parts, 65 parts, 70 parts, 75 parts or 80 parts, etc., but are not limited to the values ​​listed above, and other values ​​not listed within the above numerical range are equally applicable.

[0015] Paeoniflorin has anti-inflammatory and anti-oxidative stress effects. The functional nutritional composition of the present invention contains paeoniflorin, which can effectively enhance the sow's body's anti-oxidative stress ability, inhibit oxidative stress and inflammation, thereby alleviating the sow's oxidative stress, reducing the sow's postpartum inflammation, promoting rapid recovery of the uterus, and promoting rapid estrus after weaning of the sow.

[0016] Cherifolioside has anti-inflammatory, anti-oxidative stress, and immunomodulatory effects. It can enhance the immunity of sows, reduce postpartum inflammation in sows, and promote rapid recovery of sows after delivery.

[0017] Tomatine is a steroidal alkaloid rich in Solanaceae plants. It has anti-inflammatory and immune-stimulating effects. It can improve the disease resistance of sows, reduce postpartum inflammation in sows, and promote rapid recovery of sows after delivery.

[0018] Preferably, the plant extract comprises any one of Curcuma aromatica extract, Artemisia selengensis extract or Indigofera chinensis extract or a combination of at least two thereof, preferably a combination of Curcuma aromatica extract, Artemisia selengensis extract and Indigofera chinensis extract.

[0019] Curcuma aromatica extract has antioxidant, antibacterial, lipid-lowering, lipid metabolism regulation, analgesic, and hemostatic effects. It can relieve sow production stress and reduce sow postpartum inflammation.

[0020] Artemisia selengensis extract has multiple functions such as anti-inflammatory, antioxidant, antiviral, and immunomodulatory. It can enhance the immunity of sows, reduce postpartum inflammation of sows, and promote rapid recovery of sows after delivery.

[0021] Lanbuzheng extract has multiple functions such as anti-inflammatory and anti-stress. It works synergistically with Curcuma aromatica extract and Artemisia selengensis extract to maintain the balance of the sow's body's redox system, relieve sow's production stress, and reduce sow's postpartum inflammation.

[0022] The above-mentioned specific functional nutritional composition adopts a compound of plant extracts, tomatine, paeoniflorin and plantain glycosides, and adopts the synergistic effect of specific Curcuma aromatica extract, Artemisia selengensis extract and Blue Butter extract, which can effectively enhance the sow's body's antioxidant stress resistance, inhibit oxidative stress and inflammation, thereby alleviating the sow's oxidative stress, reducing the sow's postpartum inflammation, promoting rapid recovery of the uterus, and promoting rapid estrus after weaning of the sow.

[0023] Preferably, the mass ratio of the Curcuma aromatica extract, Artemisia selengensis extract and Indigofera chinensis extract is (1-3):(2-3):(3-4), wherein the number of parts of the Curcuma aromatica extract can be 1, 1.5, 2, 2.5 or 3, etc., the number of parts of the Artemisia selengensis extract can be 2, 2.2, 2.4, 2.6, 2.8 or 3, etc., and the number of parts of the Indigofera chinensis extract can be 3, 3.2, 3.4, 3.6, 3.8 or 4, etc., but are not limited to the values ​​listed above, and other values ​​not listed within the above numerical range are also applicable.

[0024] Preferably, the wall material comprises alginate and / or palmitic acid glyceride.

[0025] Preferably, the functional fat powder comprises, by weight, 10-30 parts of caprylic glyceride, 1-10 parts of capric glyceride, 0.5-3 parts of inositol, 0.2-2 parts of sea cucumber polysaccharide, and 30-50 parts of a carrier.

[0026] The number of caprylic acid glyceride can be 10 parts, 15 parts, 20 parts, 25 parts or 30 parts, etc., the number of capric acid glyceride can be 1 part, 2 parts, 3 parts, 4 parts, 5 parts, 6 parts, 7 parts, 8 parts, 9 parts or 10 parts, etc., the number of inositol can be 0.5 parts, 1 part, 1.5 parts, 2 parts, 2.5 parts or 3 parts, etc., the number of sea cucumber polysaccharides can be 0.2 parts, 0.4 parts, 0.6 parts, 0.8 parts, 1 part, 1.2 parts, 1.4 parts, 1.6 parts, 1.8 parts or 2 parts, etc., the number of carriers can be 30 parts, 35 parts, 40 parts, 45 parts or 50 parts, etc., but are not limited to the values ​​listed above. Other values ​​not listed within the above numerical range are also applicable.

[0027] Caprylic acid glyceride\capric acid glyceride combined with inositol and sea cucumber polysaccharide can quickly provide energy for sows, relieve sows' fatigue during labor, and promote rapid recovery of sows after delivery.

[0028] Preferably, the carrier comprises casein and / or lactose.

[0029] Preferably, the addition amount of the functional nutritional composition in step (1) is 0.5-1% of the mass of the sow feed, for example 0.5%, 0.6%, 0.7%, 0.8%, 0.9% or 1%, etc., but is not limited to the values ​​listed above. Other values ​​not listed within the above numerical range are also applicable.

[0030] Preferably, the amount of functional fat powder fed in step (2) is 10-30 g / head, for example, 10 g / head, 15 g / head, 20 g / head, 25 g / head or 30 g / head, but is not limited to the values ​​listed above. Other values ​​not listed within the above numerical range are also applicable.

[0031] Preferably, the amount of functional fat powder fed to sows on the day of delivery is 30-50 g / head, for example, 30 g / head, 35 g / head, 40 g / head, 45 g / head or 50 g / head, but is not limited to the values ​​listed above. Other values ​​not listed within the above numerical range are also applicable.

[0032] Preferably, the addition amount of the functional nutritional composition in step (3) is 1-3% of the mass of the sow feed, for example 1%, 1.5%, 2%, 2.5% or 3%, etc., but is not limited to the values ​​listed above. Other values ​​not listed within the above numerical range are also applicable.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] The present invention provides a breeding method for improving the reproductive performance of sows. By using specific functional nutritional compositions and functional fat powders at different times, the method can effectively alleviate the production stress of sows, reduce postpartum inflammation of sows, promote rapid postpartum recovery of sows, shorten the weaning-estrus interval of sows, and improve the reproductive performance of sows. DETAILED DESCRIPTION

[0035] In order to further illustrate the technical means and effects adopted by the present invention, the technical solutions of the present invention are further described below in conjunction with the preferred embodiments of the present invention, but the present invention is not limited to the scope of the embodiments.

[0036] In the following examples, Curcuma aromatica extract was purchased from Shaanxi Sinuote Biotechnology Co., Ltd.;

[0037] Artemisia selengensis extract was purchased from Shaanxi Sinuote Biotechnology Co., Ltd.;

[0038] Lanbuzheng extract was purchased from Xi'an Ruierli Bioengineering Co., Ltd.;

[0039] Tomatidine was purchased from Sichuan Jingcuibao Biotechnology Co., Ltd.;

[0040] Paeoniflorin was purchased from Xi'an Ruierli Bioengineering Co., Ltd.;

[0041] Cephaloside was purchased from Chengdu Desite Biotechnology Co., Ltd.;

[0042] Glyceryl caprylate was purchased from Guangzhou Huayu Biotechnology Co., Ltd.;

[0043] Capric glyceride was purchased from Guangzhou Huayu Biotechnology Co., Ltd.;

[0044] Inositol was purchased from Guangzhou Huayu Biotechnology Co., Ltd.;

[0045] Sea cucumber polysaccharides were purchased from Lanzhou Waterless Biotechnology Co., Ltd.

[0046] Preparation Example 1

[0047] This preparation example provides a functional nutritional composition, the specific ingredients (in parts by weight) are as follows:

[0048] 40 parts of plant extracts (Curcuma aromatica extract, Artemisia selengensis extract, and Blue Butter extract, mass ratio 2:2.5:3.5), 0.05 parts of tomatine, 0.05 parts of paeoniflorin, 0.05 parts of plantain glycosides, and 60 parts of wall materials (alginate and palmitic acid glyceride, mass ratio 1:2).

[0049] The ingredients are mixed to obtain.

[0050] Preparation Example 2

[0051] This preparation example provides a functional nutritional composition, the specific ingredients (in parts by weight) are as follows:

[0052] 30 parts of plant extracts (Curcuma aromatica extract, Artemisia selengensis extract, and Blue Butter extract, mass ratio 1:2:3), 0.1 part of tomatine, 0.01 part of paeoniflorin, 0.1 part of plantain glycosides, and 50 parts of wall materials (alginate and palmitic acid glyceride, mass ratio 1:3).

[0053] The ingredients are mixed to obtain.

[0054] Preparation Example 3

[0055] This preparation example provides a functional nutritional composition, the specific ingredients (in parts by weight) are as follows:

[0056] 50 parts of plant extracts (Curcuma aromatica extract, Artemisia selengensis extract, and Blue Butter extract, mass ratio 3:3:4), 0.02 parts of tomatine, 0.1 parts of paeoniflorin, 0.01 parts of plantain glycosides, and 80 parts of wall materials (alginate and palmitic acid glyceride, mass ratio 3:5).

[0057] The ingredients are mixed to obtain.

[0058] Preparation Example 4

[0059] This preparation example provides a functional nutritional composition, and the specific ingredients are the same as those in Preparation Example 1, except that Curcuma aromatica extract is not included and the reduced portion is proportionally distributed to Artemisia selengensis extract and Indigofera lansium extract.

[0060] Preparation Example 5

[0061] This preparation example provides a functional nutritional composition, and the specific ingredients are the same as those in Preparation Example 1, except that the Artemisia selengensis extract is not included and the reduced portion is proportionally distributed to Curcuma aromatica extract and Indigofera chinensis extract.

[0062] Preparation Example 6

[0063] This preparation example provides a functional nutritional composition, and the specific ingredients are consistent with those in Preparation Example 1 except that the blue clover extract is not included and the reduced portion is proportionally distributed to the Artemisia selengensis extract and the Curcuma aromatica extract.

[0064] Preparation Example 7

[0065] This preparation example provides a functional nutritional composition, which is consistent with Preparation Example 1 except that the plant extract is not included and the reduced portion is proportionally distributed to tomatine, paeoniflorin and phytosuccinoside.

[0066] Preparation Example 8

[0067] This preparation example provides a functional nutritional composition, the specific ingredients of which are consistent with those of Preparation Example 1 except that tomatine is not included and the reduced portion is proportionally distributed to plant extracts, paeoniflorin and phytosuccinoside.

[0068] Preparation Example 9

[0069] This preparation example provides a functional nutritional composition, which is consistent with Preparation Example 1 except that paeoniflorin is not included and the reduced portion is proportionally distributed to tomatine, plant extract and phytosuccinoside.

[0070] Preparation Example 10

[0071] This preparation example provides a functional nutritional composition, the specific ingredients of which are consistent with those of Preparation Example 1, except that phytosalidin is not included and the reduced portion is proportionally distributed to tomatine, paeoniflorin and plant extracts.

[0072] Preparation Example 11

[0073] This preparation example provides a functional fat powder, the specific ingredients (in parts by weight) are as follows:

[0074] 20 parts of caprylic glyceride, 5 parts of capric glyceride, 2 parts of inositol, 1 part of sea cucumber polysaccharide, and 40 parts of carrier (casein and lactose, mass ratio 4:1.5).

[0075] The ingredients are mixed to obtain.

[0076] Preparation Example 12

[0077] This preparation example provides a functional fat powder, the specific ingredients (in parts by weight) are as follows:

[0078] 10 parts of caprylic glyceride, 10 parts of capric glyceride, 0.5 parts of inositol, 2 parts of sea cucumber polysaccharide, and 50 parts of carrier (casein and lactose, mass ratio 3:1).

[0079] The ingredients are mixed to obtain.

[0080] Preparation Example 13

[0081] This preparation example provides a functional fat powder, the specific ingredients (in parts by weight) are as follows:

[0082] 30 parts of caprylic glyceride, 1 part of capric glyceride, 3 parts of inositol, 0.2 parts of sea cucumber polysaccharide, and 30 parts of carrier (casein and lactose, mass ratio 5:2).

[0083] The ingredients are mixed to obtain.

[0084] Preparation Example 14

[0085] This preparation example provides a functional fat powder, the specific ingredients of which are consistent with those of Preparation Example 1 except that caprylic acid glyceride is not included and the reduced portion is proportionally distributed to capric acid glyceride, inositol and sea cucumber polysaccharide.

[0086] Preparation Example 15

[0087] This preparation example provides a functional fat powder, the specific ingredients of which are consistent with those of Preparation Example 1 except that capric glyceride is not included and the reduced portion is proportionally distributed to caprylic glyceride, inositol and sea cucumber polysaccharide.

[0088] Preparation Example 16

[0089] This preparation example provides a functional fat powder, the specific ingredients of which are consistent with those of Preparation Example 1 except that inositol is not included and the reduced portion is proportionally distributed to capric glyceride, caprylic glyceride and sea cucumber polysaccharide.

[0090] Preparation Example 17

[0091] This preparation example provides a functional fat powder, the specific ingredients of which are consistent with those of Preparation Example 1 except that sea cucumber polysaccharide is not included and the reduced portion is proportionally distributed to capric glyceride, inositol and caprylic glyceride.

[0092] Example 1

[0093] This embodiment provides a breeding method for improving the reproductive performance of sows, and the specific method steps are as follows:

[0094] 1) From 2 weeks before farrowing to the day of farrowing, 0.8% of the functional nutritional composition provided in Preparation Example 1 was added to the sow feed;

[0095] 2) 3 days before sows give birth, feed the sows 20 g / head of the functional fat powder provided in Preparation Example 11, 40 g / head of the functional fat powder provided in Preparation Example 11 on the day of birth, and 20 g / head of the functional fat powder provided in Preparation Example 11 1-3 days after giving birth;

[0096] 3) After sows give birth until they are weaned and in estrus, 2% of the functional nutritional composition provided in Preparation Example 1 is added to the sow feed.

[0097] Example 2

[0098] This embodiment provides a breeding method for improving the reproductive performance of sows, and the specific method steps are as follows:

[0099] 1) From 2 weeks before farrowing to the day of farrowing, 0.5% of the functional nutritional composition provided in Preparation Example 2 was added to the sow feed;

[0100] 2) 3 days before sows give birth, feed the sows 30 g / head of the functional fat powder provided in Preparation Example 12, 50 g / head of the functional fat powder provided in Preparation Example 12 on the day of birth, and 10 g / head of the functional fat powder provided in Preparation Example 12 1-3 days after birth;

[0101] 3) After sows give birth until they are weaned and in estrus, 1% of the functional nutritional composition provided in Preparation Example 2 is added to the sow feed.

[0102] Example 3

[0103] This embodiment provides a breeding method for improving the reproductive performance of sows, and the specific method steps are as follows:

[0104] 1) From 2 weeks before farrowing to the day of farrowing, 1% of the functional nutritional composition provided in Preparation Example 3 was added to the sow feed;

[0105] 2) 3 days before sows give birth, feed the sows 10 g / head of the functional fat powder provided in Preparation Example 13, 30 g / head of the functional fat powder provided in Preparation Example 13 on the day of birth, and 30 g / head of the functional fat powder provided in Preparation Example 13 1-3 days after birth;

[0106] 3) After sows give birth until they are weaned and in estrus, 3% of the functional nutritional composition provided in Preparation Example 3 is added to the sow feed.

[0107] Examples 4-10

[0108] Examples 4-10 respectively provide a breeding method for improving the reproductive performance of sows. The specific method steps are the same as those of Example 1 except that the functional nutritional composition provided in Preparation Example 1 is replaced by an equal amount of the functional nutritional composition provided in Preparation Examples 4-10.

[0109] Examples 11-14

[0110] Examples 11-14 respectively provide a breeding method for improving the reproductive performance of sows. The specific method steps are the same as those in Example 1, except that the functional fat powder provided in Preparation Example 11 is replaced by an equal amount of the functional fat powder provided in Preparation Examples 14-17.

[0111] Comparative Example 1

[0112] This comparative example provides a breeding method for improving the reproductive performance of sows, and the specific method steps are as follows:

[0113] 1) 3 days before sows give birth, feed the sows 20 g / head of the functional fat powder provided in Preparation Example 11, 40 g / head of the functional fat powder provided in Preparation Example 11 on the day of birth, and 20 g / head of the functional fat powder provided in Preparation Example 11 1-3 days after giving birth;

[0114] 2) After sows give birth until they are weaned and in estrus, 2% of the functional nutritional composition provided in Preparation Example 1 is added to the sow feed.

[0115] Comparative Example 2

[0116] This comparative example provides a breeding method for improving the reproductive performance of sows, and the specific method steps are as follows:

[0117] 1) From 2 weeks before farrowing to the day of farrowing, 0.8% of the functional nutritional composition provided in Preparation Example 1 was added to the sow feed;

[0118] 2) After sows give birth until they are weaned and in estrus, 2% of the functional nutritional composition provided in Preparation Example 1 is added to the sow feed.

[0119] Comparative Example 3

[0120] This comparative example provides a breeding method for improving the reproductive performance of sows, and the specific method steps are as follows:

[0121] 1) From 2 weeks before farrowing to the day of farrowing, 0.8% of the functional nutritional composition provided in Preparation Example 1 was added to the sow feed;

[0122] 2) 3 days before sow delivery, feed the sows 20 g / head of the functional fat powder provided in Preparation Example 11, feed the sows 40 g / head of the functional fat powder provided in Preparation Example 11 on the day of delivery, and feed the sows 20 g / head of the functional fat powder provided in Preparation Example 11 1-3 days after delivery.

[0123] Comparative Example 4

[0124] This comparative example provides a breeding method for improving the reproductive performance of sows, and the specific method steps are as follows:

[0125] 1) From 2 weeks before farrowing to the day of farrowing, 0.8% of the functional fat powder provided in Preparation Example 11 was added to the sow feed;

[0126] 2) 3 days before sows give birth, feed the sows 20 g / head of the functional nutritional composition provided in Preparation Example 1, 40 g / head of the functional nutritional composition provided in Preparation Example 1 on the day of birth, and 20 g / head of the functional nutritional composition provided in Preparation Example 1 1-3 days after giving birth;

[0127] 3) After sows give birth until they are weaned and in estrus, 2% of the functional fat powder provided in Preparation Example 11 is added to the sow feed.

[0128] Effect test:

[0129] 114 healthy, 100-day gestational sows were selected and randomly divided into 19 groups, with 6 replicates per group and 1 sow per replicate. The control group adopted conventional breeding methods (i.e., the functional fat powder and functional nutritional composition of the present invention were not used). The experimental groups adopted the breeding methods of Examples 1-14 and Comparative Examples 1-4, respectively. The test period was from 100 days of gestation to weaning and estrus of the sows. The sows were cross-fostered within 3 days after giving birth, so that each sow had 10 piglets, and the piglets were weaned on day 21. The following test was then performed to calculate the average value.

[0130] Sow's delivery process and duration of postpartum lochia:

[0131] Labor process: the time from the start to the end of labor.

[0132] Duration of postpartum lochia: the time from the time the sow gives birth to the time the lochia in the reproductive tract stops after giving birth.

[0133] Estrus interval: the time interval from the start of weaning to the first estrus.

[0134] Group Average labor duration (h) Duration of postpartum lochia (days) control group 4.7 4.8 Example 1 3.0 3.1 Example 2 3.2 3.2 Example 3 3.1 3.1 Example 4 3.4 3.6 Example 5 3.3 3.5 Example 6 3.5 3.7 Example 7 3.9 4.0 Example 8 3.6 3.6 Example 9 3.8 3.7 Example 10 3.7 3.8 Example 11 3.6 3.5 Example 12 3.5 3.4 Example 13 3.4 3.6 Example 14 3.5 3.5 Comparative Example 1 4.1 4.2 Comparative Example 2 3.7 4.1 Comparative Example 3 3.2 4.0 Comparative Example 4 4.3 4.2

[0135] Antioxidant capacity evaluation:

[0136] On the day of farrowing, 6 sows were randomly selected from each group for blood sampling from the ear vein. The blood samples were kept at 20°C for 10 minutes and centrifuged at 3000 r / min for 15 minutes to prepare serum. The serum was transferred to Eppendorf tubes and stored at -20°C. Total superoxide dismutase (T-SOD) was detected using Fe 3+ The reduction method, the total antioxidant capacity (T-AOC) assay using the xanthine oxidase method, the glutathione peroxidase (GSH-Px) assay using the dithiodinitrobenzoic acid method, and the catalase (CAT) assay using the ammonium molybdate colorimetric method were performed according to the manufacturer's instructions. All kits were purchased from Nanjing Jiancheng Biotechnology Co., Ltd. The test results are shown below.

[0137]

[0138]

[0139] Farrowing performance evaluation:

[0140]

[0141] Lactation performance evaluation:

[0142]

[0143]

[0144] From the above results, it can be found that the breeding method provided by the present invention has anti-inflammatory and antioxidant effects, can relieve sow production stress, reduce sow postpartum inflammation, promote sow postpartum body condition recovery, shorten estrus interval, and improve sow reproductive performance. Comparative Examples 1-14 show that the present invention adopts a compound of plant extracts, tomatine, paeoniflorin and scutellaria baicalensis and adopts a synergistic effect of specific Curcuma aromatica extract, Artemisia selengensis extract and Bluebuzheng extract, as well as a combined effect of caprylic acid glyceride, capric acid glyceride, inositol and sea cucumber polysaccharide, which can effectively improve the effect of the method; Comparative Example 1, Comparative Examples 1-4 and the control group show that the present invention adopts a specific functional nutritional composition and functional fat powder, and cooperates with a specific method step process, which effectively relieves sow production stress, reduces sow postpartum inflammation, promotes rapid recovery of sows after childbirth, shortens the sow weaning estrus interval, and improves the reproductive performance of sows.

[0145] The applicant declares that while the present invention uses the aforementioned embodiments to illustrate the present invention's breeding method for improving sow reproductive performance, the present invention is not limited to the aforementioned embodiments, nor does it imply that the present invention must rely on the aforementioned embodiments for implementation. Persons skilled in the art will appreciate that any improvements to the present invention, equivalent substitutions for various raw materials in the present invention's products, addition of auxiliary ingredients, and selection of specific methods, etc., fall within the scope of protection and disclosure of the present invention.

[0146] The preferred embodiments of the present invention are described in detail above. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the scope of protection of the present invention.

[0147] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

Claims

1. A breeding method for improving the reproductive performance of sows, characterized in that: The breeding method comprises the following steps: (1) Adding the functional nutritional composition to the sow feed from two weeks before farrowing to the day of farrowing; (2) Feed sows with functional fat powder from 3 days before farrowing to 1-3 days after farrowing; (3) Adding the functional nutritional composition to the sow feed from the time of sow farrowing to the time of weaning and estrus.

2. The breeding method for improving sow reproductive performance according to claim 1, characterized in that: The functional nutritional composition comprises, by weight, 30-50 parts of plant extracts, 0.02-0.1 parts of tomatine, 0.01-0.1 parts of paeoniflorin, 0.01-0.1 parts of calendula officinalis and 50-80 parts of wall materials.

3. The breeding method for improving the reproductive performance of sows according to claim 2, characterized in that: The plant extract comprises any one of a Curcuma aromatica extract, an Artemisia selengensis extract or a Blueberry extract or a combination of at least two thereof, preferably a combination of a Curcuma aromatica extract, an Artemisia selengensis extract and a Blueberry extract.

4. The breeding method for improving the reproductive performance of sows according to claim 3, characterized in that: The mass ratio of the Curcuma aromatica extract, Artemisia selengensis extract and Indigofera lanuginosa extract is (1-3):(2-3):(3-4).

5. The breeding method for improving the reproductive performance of sows according to any one of claims 2 to 4, characterized in that: The wall material comprises alginate and / or palmitic acid glyceride.

6. The breeding method for improving the reproductive performance of sows according to any one of claims 1 to 5, characterized in that: The functional fat powder comprises, by weight, 10-30 parts of caprylic glyceride, 1-10 parts of capric glyceride, 0.5-3 parts of inositol, 0.2-2 parts of sea cucumber polysaccharide and 30-50 parts of a carrier.

7. The breeding method for improving the reproductive performance of sows according to claim 6, characterized in that: The carrier includes casein and / or lactose.

8. The breeding method for improving the reproductive performance of sows according to any one of claims 1 to 7, characterized in that: The added amount of the functional nutritional composition in step (1) is 0.5-1% of the mass of sow feed.

9. The breeding method for improving the reproductive performance of sows according to any one of claims 1 to 8, characterized in that: The amount of functional fat powder fed in step (2) is 10-30 g / head; Preferably, the amount of functional fat powder fed to sows on the day of production is 30-50 g / head.

10. The breeding method for improving the reproductive performance of sows according to any one of claims 1 to 9, characterized in that: The added amount of the functional nutritional composition in step (3) is 1-3% of the mass of the sow feed.

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