Boar odor composition, boar odor agent, preparation method therefor, and use thereof

Abstract

The present disclosure relates to a boar odor composition, a boar odor agent, a preparation method therefor, and use thereof and belongs to the technical field of breeding. A boar odor composition, comprising a component A and a component B, wherein the component A comprises at least one of o-aminoacetophenone and benzylideneacetone, and the component B comprises quinoline; moreover, the component B further comprises at least one of androstenone and androstenol. Both the boar odor composition and the boar odor agent can effectively improve the estrus initiation speed and estrous performance of gilts, and effectively improve the breeding performance of sows.

Description

Boar odor composition and boar odor agent and preparation method and application thereof

[0001] Cross-reference to related disclosures

[0002] The present disclosure claims priority to Chinese Patent 2024111064157 entitled "Boar odor composition and boar odor agent and preparation method and application thereof" filed on August 13, 2024, the contents of which are incorporated herein by reference in their entirety. TECHNICAL FIELD

[0003] The present disclosure relates to the technical field of breeding, and in particular to a boar odor composition and boar odor agent and preparation method and application thereof. BACKGROUND

[0004] In the pig industry, estrus management of sows is a key link to improve reproductive efficiency. Traditionally, breeders rely on live boars to induce estrus, but this method has the disadvantages of high cost and complex management. Therefore, various boar odor products have been developed on the market to simulate the odor characteristics of boars to induce sows to estrus. However, these products have varying effects in practical applications, and generally have low estrus induction rates and unstable estrus performance. In particular, in promoting the estrus initiation of replacement gilts and checking estrus for breeding, the effect is far inferior to that of live boars.

[0005] O-aminophenylacetonitrile and benzylideneacetone are two organic compounds with special odor, although they are often mentioned as one of the sources of pork odor, but so far there is no research to directly prove that they are the sex pheromone of sows. However, their potential role in odor composition cannot be ignored, especially when they work synergistically with other sex pheromones, they may exhibit new functions to promote sow estrus. SUMMARY

[0006] In view of the deficiencies of the prior art, the purpose of the embodiments of the present disclosure includes providing a boar odor composition and boar odor agent and preparation method and application thereof to improve the problems of high cost and complex management of traditional live boar induced estrus, and low estrus induction rate of current boar odor in application.

[0007] In a first aspect, the embodiments of the present disclosure provide a boar odor composition, comprising component A and component B, wherein component A comprises at least one of o-aminophenylacetonitrile and benzylideneacetone, component B comprises quinoline, and component B further comprises at least one of androstenone and androstenol.

[0008] The disclosure can effectively improve the estrus starting speed and estrus performance of the reserve sows and effectively improve the reproductive performance of the experienced sows by adopting component A of at least one of o-aminoacetophenone and benzalacetone and component B of at least one of quinoline, androstenone and androstenol, and the effect achieved is close to or even exceeds the effect of live boar induced estrus.

[0009] In some embodiments of the disclosure, component A includes o-aminoacetophenone and benzalacetone, and component B includes quinoline, androstenone and androstenol.

[0010] The disclosure can further effectively improve the estrus starting speed and estrus performance of the reserve sows and further effectively improve the reproductive performance of the experienced sows by adopting o-aminoacetophenone and benzalacetone as component A on the basis of quinoline, androstenone and androstenol as component B, and the synergistic effect can be achieved.

[0011] In some embodiments of the disclosure, the mass ratio of component A to component B is 1:1 to 1:60.

[0012] The disclosure can achieve the effect of efficiently inducing and promoting the estrus starting speed and estrus performance of the reserve sows and the reproductive performance of the experienced sows by adopting component A and component B in a suitable mass ratio.

[0013] In the second aspect, the embodiments of the disclosure provide a boar odor agent, which includes the boar odor composition provided in the first aspect.

[0014] The boar odor composition provided in the first aspect of the disclosure can effectively improve the estrus starting speed and estrus performance of the reserve sows and effectively improve the reproductive performance of the experienced sows, and the boar odor agent including the boar odor composition can also effectively improve the estrus starting speed and estrus performance of the reserve sows and effectively improve the reproductive performance of the experienced sows.

[0015] In some embodiments of the disclosure, the concentration of component A in the boar odor agent is 0.05 μg / mL ～ 4000 μg / mL.

[0016] In some embodiments of the disclosure, the concentration of component B in the boar odor agent is 1 μg / mL to 6000 μg / mL.

[0017] In some embodiments of the disclosure, the concentration of component A in the boar odor agent is 0.05 μg / mL to 4000 μg / mL, and the concentration of component B is 1 μg / mL to 6000 μg / mL.

[0018] The present disclosure can achieve the effect of efficiently inducing the speed of starting the estrus and the estrus performance of the replacement gilts and the reproductive performance of the multiparous sows by using the component A and the component B in the appropriate concentration in the boar odorant.

[0019] In some embodiments of the present disclosure, the concentration of the component A in the boar odorant is 100 μg / mL-4000 μg / mL, and the concentration of the component B is 100 μg / mL-6000 μg / mL.

[0020] The present disclosure can further improve the effect of inducing the speed of starting the estrus and the estrus performance of the replacement gilts and the reproductive performance of the multiparous sows by using the component A and the component B in the more appropriate concentration in the boar odorant.

[0021] In some embodiments of the present disclosure, the boar odorant comprises 0.5 μg / mL of o-aminoacetophenone, 10 μg / mL of androstenone, 10 μg / mL of androstenol, and 10 μg / mL of quinoline.

[0022] In some embodiments of the present disclosure, the boar odorant comprises 1 μg / mL of benzalacetone, 10 μg / mL of androstenone, 10 μg / mL of androstenol, and 10 μg / mL of quinoline.

[0023] In some embodiments of the present disclosure, the boar odorant comprises 0.5 μg / mL of o-aminoacetophenone, 1 μg / mL of benzalacetone, 10 μg / mL of androstenone, 10 μg / mL of androstenol, and 10 μg / mL of quinoline.

[0024] In some embodiments of the present disclosure, the boar odorant comprises 0.5 μg / mL of o-aminoacetophenone, 10 μg / mL of androstenone, and 10 μg / mL of quinoline.

[0025] In some embodiments of the present disclosure, the boar odorant comprises 0.05 μg / mL of o-aminoacetophenone, 0.05 μg / mL of benzalacetone, 1 μg / mL of androstenone, 1 μg / mL of androstenol, and 1 μg / mL of quinoline.

[0026] In some embodiments of the present disclosure, the boar odorant comprises 100 μg / mL of o-aminoacetophenone, 100 μg / mL of benzalacetone, 100 μg / mL of androstenone, 100 μg / mL of androstenol, and 100 μg / mL of quinoline.

[0027] In some embodiments of the present disclosure, the boar odor agent comprises 2000 μg / mL of o-aminophenyl ethanone, 2000 μg / mL of benzylideneacetone, 2000 μg / mL of androstenone, 2000 μg / mL of androstenol and 2000 μg / mL of quinoline. In a third aspect, the present disclosure provides a preparation method of the boar odor agent according to the second aspect, comprising: dissolving component A and component B in a solvent according to the corresponding concentrations to obtain the boar odor agent.

[0028] The boar odor agent prepared by the method of the present disclosure can effectively improve the estrus initiation speed and estrus performance of the replacement gilts and effectively improve the reproductive performance of the experienced sows.

[0029] In some embodiments of the present disclosure, after dissolving component A and component B in a solvent according to the corresponding concentrations, a 0.4 μm-0.5 μm filter membrane is used for filtration treatment.

[0030] The present disclosure uses filter membrane filtration treatment to obtain a pure boar odor agent.

[0031] In a fourth aspect, the present disclosure provides a use of the boar odor agent according to the second aspect in the preparation of a preparation for promoting estrus of replacement gilts and improving the reproductive performance of experienced sows.

[0032] The boar odor agent according to the second aspect of the present disclosure can effectively improve the estrus initiation speed and estrus performance of the replacement gilts and effectively improve the reproductive performance of the experienced sows, and therefore the boar odor agent can be used in the preparation of a preparation for promoting estrus of replacement gilts and improving the reproductive performance of experienced sows.

[0033] In some embodiments of the present disclosure, the preparation comprises any one of a cream preparation, a spray preparation and an aerosol preparation.

[0034] The present disclosure can be applied to different scenarios or needs by preparing preparations of different dosage forms. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions in the embodiments of the present disclosure will be described clearly and completely. The specific conditions are not specified in the embodiments, and the conventional conditions or the conditions recommended by the manufacturer are used. The reagents or instruments used are not specified by the manufacturer, and are conventional products that can be purchased on the market.

[0036] In order to improve the current traditional live boar induction estrus, high cost, complex management, and the current boar odor agent in the application of low induction estrus rate. The embodiment of the present disclosure provides a boar odor composition, comprising component A and component B, wherein component A comprises at least one of o-aminoacetophenone, benzylideneacetone, component B comprises quinoline, and component B further comprises at least one of androstenone, androstenol.

[0037] As an example, component B comprises quinoline and androstenone, or component B comprises quinoline and androstenol, or component B comprises quinoline, androstenone and androstenol.

[0038] The component A of at least one of o-aminoacetophenone, benzylideneacetone is matched with the component B of at least one of quinoline, androstenone and androstenol, which can effectively improve the estrus starting speed and estrus performance of the replacement gilt, and effectively improve the reproductive performance of the experienced sow; and the effect achieved is close to or even exceeds the effect of live boar induction estrus.

[0039] In some embodiments of the present disclosure, component A comprises o-aminoacetophenone and benzylideneacetone, and component B comprises quinoline, androstenone and androstenol. On the basis of component B using quinoline, androstenone and androstenol, component A uses o-aminoacetophenone and benzylideneacetone, which has a synergistic effect, can further effectively improve the estrus starting speed and estrus performance of the replacement gilt, and further effectively improve the reproductive performance of the experienced sow.

[0040] In some embodiments of the present disclosure, the mass ratio of component A to component B is 1:1 to 1:60. As an example, the mass ratio of component A to component B can be but not limited to 1:1, 1:1.5, 1:2, 1:3, 1:4, 1:5, 1:8, 1:10, 1:15, 1:20, 1:25, 1:30, 1:35, 1:40, 1:45, 1:50, 1:55 or 1:60, etc. Component A and component B are matched in a suitable mass ratio to achieve the effect of efficiently inducing and promoting the estrus starting speed and estrus performance of the replacement gilt and the reproductive performance of the experienced sow.

[0041] The embodiment of the present disclosure provides a boar odor agent comprising the above-mentioned boar odor composition.

[0042] The boar odor composition can effectively improve the estrus starting speed and estrus performance of the replacement gilt, and effectively improve the reproductive performance of the experienced sow, so the boar odor agent comprising the boar odor composition can also effectively improve the estrus starting speed and estrus performance of the replacement gilt, and effectively improve the reproductive performance of the experienced sow.

[0043] In some embodiments of the present disclosure, the concentration of component A in the boar odor agent is 0.05 μg / mL to 4000 μg / mL, and the concentration of component B is 1 μg / mL to 6000 μg / mL. For example, the concentration of component A in the boar odor agent can be 0.05 μg / mL, 0.1 μg / mL, 0.2 μg / mL, 0.3 μg / mL, 0.4 μg / mL, 0.5 μg / mL, 1 μg / mL, 1.5 μg / mL, 5 μg / mL, 10 μg / mL, 20 μg / mL, 50 μg / mL, 100 μg / mL, 200 μg / mL, 500 μg / mL, 1000 μg / mL, 1500 μg / mL, 2000 μg / mL, 3000 μg / mL, 4000 μg / mL. The concentration of component B in the boar odor agent can be 1 μg / mL, 3 μg / mL, 5 μg / mL, 10 μg / mL, 20 μg / mL, 30 μg / mL, 50 μg / mL, 80 μg / mL, 100 μg / mL, 200 μg / mL, 300 μg / mL, 500 μg / mL, 800 μg / mL, 1000 μg / mL, 1200 μg / mL, 1500 μg / mL, 1800 μg / mL, 2000 μg / mL, 3000 μg / mL, 4000 μg / mL, 5000 μg / mL, or 6000 μg / mL, etc. The use of appropriate concentrations of component A and component B in the boar odor agent can achieve the effect of efficiently inducing the onset of puberty in gilts and the performance of estrus and the reproductive performance of sows.

[0044] Further, the concentration of component A in the boar odor agent is 100 μg / mL to 4000 μg / mL, and the concentration of component B is 100 μg / mL to 6000 μg / mL. The use of more appropriate concentrations of component A and component B in the boar odor agent can further improve the effect of inducing the onset of puberty in gilts and the performance of estrus and the reproductive performance of sows.

[0045] Exemplarily, the boar odor agent can include 0.5 μg / mL of o-aminophenylacetonitrile, 10 μg / mL of androstenone, 10 μg / mL of androstenol and 10 μg / mL of quinoline; or, the boar odor agent can include 1 μg / mL of benzalacetone, 10 μg / mL of androstenone, 10 μg / mL of androstenol and 10 μg / mL of quinoline; or, the boar odor agent can include 0.5 μg / mL of o-aminophenylacetonitrile, 1 μg / mL of benzalacetone, 10 μg / mL of androstenone, 10 μg / mL of androstenol and 10 μg / mL of quinoline; or, the boar odor agent can include 0.5 μg / mL of o-aminophenylacetonitrile, 10 μg / mL of androstenone and 10 μg / mL of quinoline; or, the boar odor agent can include 0.05 μg / mL of o-aminophenylacetonitrile, 0.05 μg / mL of benzalacetone, 1 μg / mL of androstenone, 1 μg / mL of androstenol and 1 μg / mL of quinoline; or, the boar odor agent can include 100 μg / mL of o-aminophenylacetonitrile, 100 μg / mL of benzalacetone, 100 μg / mL of androstenone, 100 μg / mL of androstenol and 100 μg / mL of quinoline; or, the boar odor agent can include 2000 μg / mL of o-aminophenylacetonitrile, 2000 μg / mL of benzalacetone, 2000 μg / mL of androstenone, 2000 μg / mL of androstenol and 2000 μg / mL of quinoline.

[0046] The boar odor agent can effectively improve the estrus starting speed and estrus performance of the replacement gilts, and effectively improve the reproductive performance of the experienced sows, and therefore the boar odor agent can be applied to prepare the preparation for promoting estrus of the replacement gilts and improving the reproductive ability of the experienced sows.

[0047] The boar odor agent can effectively improve the estrus starting speed and estrus performance of the replacement gilts, and effectively improve the reproductive performance of the experienced sows, and therefore the boar odor agent can be applied to prepare the preparation for promoting estrus of the replacement gilts and improving the reproductive ability of the experienced sows.

[0048] The boar odor agent can effectively improve the estrus starting speed and estrus performance of the replacement gilts, and effectively improve the reproductive performance of the experienced sows, and therefore the boar odor agent can be applied to prepare the preparation for promoting estrus of the replacement gilts and improving the reproductive ability of the experienced sows.

[0049] In some embodiments of the present disclosure, the preparation includes any one of a cream preparation, a spray preparation, and an aerosol preparation. Different dosage forms of the preparation can be prepared for different scenes or needs.

[0050] The features and performances of the present disclosure are further described in detail below in combination with embodiments.

[0051] Embodiment 1

[0052] The embodiment provides a boar smell agent, and a preparation method thereof comprises the following steps: dissolving o-aminophenylacetonitrile at 0.5 μg / mL, androstenone at 10 μg / mL, androstenol at 10 μg / mL, and quinoline at 10 μg / mL in a solvent to prepare a boar smell agent spray.

[0053] Embodiment 2

[0054] The embodiment provides a boar smell agent, and a preparation method thereof comprises the following steps: dissolving benzalacetone at 1 μg / mL, androstenone at 10 μg / mL, androstenol at 10 μg / mL, and quinoline at 10 μg / mL in a solvent to prepare a boar smell agent spray.

[0055] Embodiment 3

[0056] The embodiment provides a boar smell agent, and a preparation method thereof comprises the following steps: dissolving o-aminophenylacetonitrile at 0.5 μg / mL, benzalacetone at 1 μg / mL, androstenone at 10 μg / mL, androstenol at 10 μg / mL, and quinoline at 10 μg / mL in a solvent to prepare a boar smell agent spray.

[0057] Embodiment 4

[0058] The embodiment provides a boar smell agent, and a preparation method thereof comprises the following steps: dissolving o-aminophenylacetonitrile at 0.5 μg / mL, androstenone at 10 μg / mL, and quinoline at 10 μg / mL in a solvent to prepare a boar smell agent spray.

[0059] Embodiment 5

[0060] The embodiment provides a boar smell agent, and a preparation method thereof comprises the following steps: dissolving o-aminophenylacetonitrile at 0.05 μg / mL, benzalacetone at 0.05 μg / mL, androstenone at 1 μg / mL, androstenol at 1 μg / mL, and quinoline at 1 μg / mL in a solvent to prepare a boar smell agent spray.

[0061] Embodiment 6

[0062] The embodiment provides a boar smell agent, and a preparation method thereof comprises the following steps: dissolving o-aminophenylacetonitrile at 100 μg / mL, benzalacetone at 100 μg / mL, androstenone at 100 μg / mL, androstenol at 100 μg / mL, and quinoline at 100 μg / mL in a solvent to prepare a boar smell agent spray.

[0063] Embodiment 7

[0064] The present example provides a boar odor agent, and a preparation method thereof includes: dissolving o-aminophenylacetonitrile at 2000 μg / mL, benzylideneacetone at 2000 μg / mL, androstenone at 2000 μg / mL, androstenol at 2000 μg / mL, and quinoline at 2000 μg / mL in a solvent to prepare a boar odor agent spray.

[0065] Comparative Example 1

[0066] The present comparative example provides a boar odor agent, and a preparation method thereof includes: dissolving o-aminophenylacetonitrile at 0.5 μg / mL and androstenol at 10 μg / mL in a solvent to prepare a boar odor agent spray.

[0067] Comparative Example 2

[0068] The present comparative example provides a boar odor agent, and a preparation method thereof includes: dissolving o-aminophenylacetonitrile at 0.5 μg / mL and androstenone at 10 μg / mL in a solvent to prepare a boar odor agent spray.

[0069] Comparative Example 3

[0070] The present comparative example provides a boar odor agent, and a preparation method thereof includes: dissolving o-aminophenylacetonitrile at 0.5 μg / mL and quinoline at 10 μg / mL in a solvent to prepare a boar odor agent spray.

[0071] Comparative Example 4

[0072] The present comparative example provides a boar odor agent, and a preparation method thereof includes: dissolving androstenone at 10 μg / mL, androstenol at 10 μg / mL, and quinoline at 10 μg / mL in a solvent to prepare a boar odor agent spray.

[0073] Comparative Example 5

[0074] The present comparative example provides a boar odor agent, and a preparation method thereof includes: dissolving o-aminophenylacetonitrile at 0.5 μg / mL, androstenone at 10 μg / mL, and androstenol at 10 μg / mL in a solvent to prepare a boar odor agent spray.

[0075] Boar odor agents provided in Examples 1 to 7 and Comparative Examples 1 to 5 of Table 1

[0076] Note: " / " in Table 1 means that the component is not included.

[0077] Test Example 1

[0078] The present test example tests the boar odor agents provided in Examples 1 to 4 and Comparative Examples 1 to 5 on replacement gilts.

[0079] Select 300 back-up sows with similar age, weight and good health, and randomly divide them into 10 groups, 30 sows in each group. Spray each boar odor agent on the back-up sows respectively. From the age of 140 days of the back-up sows, spray 1 mL each time in the morning and evening every day, continuously for 30 days until the age of 170 days of the back-up sows, and continuously observe and record the estrus performance until the age of 200 days. Ensure that the spraying equipment used in each group is consistent to exclude the influence of equipment differences on the test results.

[0080] Select healthy and sexually active live boars for exposure, and place the back-up sows in an environment where they can contact the live boars but cannot directly mate, simulating the natural conditions of boar-induced estrus as a control group.

[0081] From the start date of the test (the age of 140 days of the back-up sows), observe the estrus performance in the morning and evening every day, and record the following indicators: the number of sows with swollen vulva, the number of sows that stand still when pressed on the back (i.e. sows that remain still when stimulated by pressing on the back), and the number of sows with erect ears (as an auxiliary indicator of estrus excitement). At the same time, record the age of the first estrus of each sow, and calculate the average age of the first estrus of each group. The results are shown in Table 2.

[0082] Table 2 Estrus performance of back-up sows

[0083] As can be seen from the results in Table 2, comparing the control group and Examples 1-4, the estrus initiation speed and estrus performance of the back-up sows in Examples 1-4 are relatively close to those of the back-up sows in the control group, with little difference, indicating that the effect of the boar odor agent provided by the present disclosure on promoting the estrus initiation speed and estrus performance of back-up sows is close to the effect of live boar-induced estrus.

[0084] Comparing Examples 1-4 and Comparative Examples 1-5, the estrus initiation speed of the back-up sows in Examples 1-4 is faster, and the number of estrus performance is more, indicating that the boar odor agent provided by the present disclosure, by cooperating at least one of oestradiol-17-one, oestradiol-17-ol with at least one of oestrone, oestriol in the presence of at least one of o-aminophenylaceton and benzylideneacetone, can effectively improve the estrus initiation speed and estrus performance of back-up sows.

[0085] Test Example 2

[0086] In this test example, the effect of the boar odor agent provided in Examples 1-4 and Comparative Examples 1-5 on the reproductive capacity of multiparous sows is tested.

[0087] 180 healthy and well-bred multiparous sows were randomly divided into 9 groups, 20 sows in each group. Each boar odorant was used to spray the nose of the multiparous sows. The sows were sprayed once in the morning and evening from the first day after weaning, 1 mL each time, until the standing reflex appeared, and then insemination was performed immediately. B-ultrasound was used to detect the pregnancy 28 days after insemination.

[0088] Healthy and sexually active live boars were selected for exposure. The multiparous sows were placed in an environment where they could contact the live boars but could not directly mate, simulating the natural conditions of boar-induced estrus, and insemination was performed immediately when the standing reflex appeared as the control group.

[0089] From the weaning of the sows until the farrowing period, the following indicators were observed and recorded: weaning to estrus interval, number of estrus, breeding pregnancy rate (%) = number of successfully pregnant sows / number of sows receiving insemination x 100%, and number of litters. The results are shown in Table 3.

[0090] Table 3 Reproductive capacity of multiparous sows

[0091] As can be seen from the results in Table 3, comparing the control group and Examples 1-4, the reproductive capacity of the multiparous sows in Examples 1-4 is similar to that of the multiparous sows in the control group, with little difference, indicating that the boar odorant provided by the present disclosure has an effect on promoting the reproductive capacity of multiparous sows similar to that of live boars inducing multiparous sows.

[0092] Comparing Examples 1-4 and Comparative Examples 1-5, the weaning to estrus interval of the multiparous sows in Examples 1-4 is shorter, the breeding pregnancy rate is higher, and the number of litters is more, indicating that the boar odorant provided by the present disclosure, by coordinating at least one of o-anisaldehyde and benzylideneacetone with at least one of sterochene and sterochol, can effectively improve the reproductive capacity of multiparous sows.

[0093] Test Example 3

[0094] In this test example, the boar odorants provided in Examples 5-7 were tested on replacement gilts.

[0095] 120 replacement gilts with similar age, weight, and good health were randomly divided into 3 groups, 40 gilts in each group. Each boar odorant was used to spray the nose of the replacement gilts. From the age of 140 days, the replacement gilts were sprayed once in the morning and evening, 1 mL each time, for 30 consecutive days until the age of 170 days, and the estrus performance was observed and recorded until the age of 200 days. The spraying equipment used in each group was consistent to exclude the influence of equipment differences on the test results.

[0096] From the starting day of the test (140 days old of the replacement gilts), the estrus performance observation was carried out once in the morning and evening each day, and the following indexes were recorded: the number of gilts with vulva redness, the number of gilts standing still when pressed on the back (i.e. the gilts remaining still when stimulated by pressing on the back), and the number of gilts with both ears erect (as an auxiliary index of estrus excitement state). At the same time, the first estrus age of each gilt was recorded, and the average first estrus age of each group was calculated. The results are shown in Table 4.

[0097] Table 4 Estrus performance of replacement gilts

[0098] As can be seen from the results of Table 4, comparing Examples 5-7, with the increase of the concentrations of Component A and Component B, the replacement gilts have faster estrus initiation speed and more estrus performance. However, when the concentrations of Component A and Component B increase to a certain extent, the estrus initiation speed and estrus performance of the replacement gilts do not have significant improvement. It is shown that the boar odor provided by the present disclosure, by matching the appropriate concentration of Component A with the appropriate concentration of Component B, can effectively improve the estrus initiation speed and estrus performance of the replacement gilts.

[0099] Test Example 4

[0100] In this test example, the effects of the boar odor provided in Examples 5-7 on the reproductive capacity of the multiparous gilts were tested.

[0101] A total of 90 healthy multiparous gilts with good reproductive records were selected and randomly divided into 3 groups, 30 gilts in each group. The multiparous gilts were treated with the respective boar odor by nasal spraying. The gilts were sprayed once in the morning and evening each day from the first day after weaning, 1 mL each time, until the standing reflex appeared, then insemination was immediately performed, and the pregnancy was detected by B-ultrasound 28 days after insemination.

[0102] From the weaning of the gilts, the following indexes were observed and recorded until the farrowing period: the interval days from weaning to estrus, the number of estrus, the conception rate of breeding (%)=the number of successfully pregnant gilts / the number of gilts receiving insemination x 100%, and the number of farrowing. The results are shown in Table 5.

[0103] Table 5 Reproductive capacity of multiparous gilts

[0104] As can be seen from the results of Table 5, comparing Examples 5-7, with the increase of the concentrations of Component A and Component B, the multiparous gilts have shorter interval from weaning to estrus, more conception rate of breeding and more number of farrowing. However, when the concentrations of Component A and Component B increase to a certain extent, the reproductive capacity of the multiparous gilts does not have significant improvement. It is shown that the boar odor provided by the present disclosure, by matching the appropriate concentration of Component A with the appropriate concentration of Component B, can effectively improve the reproductive capacity of the multiparous gilts.

[0105] The embodiments described above are part of, but not all, embodiments of the present disclosure. The detailed description of the embodiments of the present disclosure is not intended to limit the scope of the claimed present disclosure, but merely represents selected embodiments of the present disclosure. Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative work are within the scope of protection of the present disclosure. Industrial applicability

[0106] The boar odor composition provided by the present disclosure can effectively improve the estrus initiation speed and estrus performance of the replacement gilts, and effectively improve the reproductive performance of the sows. The boar odor agent comprising the boar odor composition can effectively improve the estrus initiation speed and estrus performance of the replacement gilts, and effectively improve the reproductive performance of the sows, and can be applied to prepare the preparation for promoting the estrus of the replacement gilts and improving the reproductive ability of the sows.

Claims

1. A boar scent composition characterized in that, The composition comprises component A and component B, wherein the component A comprises at least one of o-aminoacetophenone and benzalacetone, the component B comprises quinoline, and the component B further comprises at least one of androstenone and androstenol.

2. The boar scent composition of claim 1, wherein, The component A comprises o-aminoacetophenone and benzalacetone, and the component B comprises quinoline, androstenone and androstenol.

3. The boar scent composition according to claim 1 or 2, characterized in that, The mass ratio of the component A to the component B is 1:1 to 1:

60.

4. A boar scent, characterized in that The boar scent composition of any one of claims 1 to 3.

5. The boar scent of claim 4, wherein, The concentration of the component A in the boar scent is 0.05 μg / mL to 4000 μg / mL.

6. The boar scent of claim 4 or 5, wherein, The concentration of the component B in the boar scent is 1 μg / mL to 6000 μg / mL.

7. The boar scent of any one of claims 4 to 6, wherein, The concentration of the component A in the boar scent is 0.05 μg / mL to 4000 μg / mL, and the concentration of the component B is 1 μg / mL to 6000 μg / mL.

8. The boar scent of claim 7, wherein, The concentration of the component A in the boar scent is 100 μg / mL to 4000 μg / mL, and the concentration of the component B is 100 μg / mL to 6000 μg / mL.

9. The boar scent of any one of claims 4 to 7, wherein, The boar scent comprises 0.5 μg / mL o-aminoacetophenone, 10 μg / mL androstenone, 10 μg / mL androstenol and 10 μg / mL quinoline.

10. The boar scent of any one of claims 4 to 7, wherein, The boar scent comprises 1 μg / mL benzalacetone, 10 μg / mL androstenone, 10 μg / mL androstenol and 10 μg / mL quinoline.

11. The boar scent of any of claims 4-7, wherein, The boar scent comprises 0.5 μg / mL o-aminoacetophenone, 1 μg / mL benzalacetone, 10 μg / mL androstenone, 10 μg / mL androstenol and 10 μg / mL quinoline.

12. The boar scent of any one of claims 4-7, wherein, The boar scent comprises 0.5 μg / mL o-aminoacetophenone, 10 μg / mL androstenone and 10 μg / mL quinoline.

13. The boar scent of any of claims 4-7, wherein, The boar scent comprises 0.05 μg / mL o-aminoacetophenone, 0.05 μg / mL benzalacetone, 1 μg / mL androstenone, 1 μg / mL androstenol and 1 μg / mL quinoline.

14. The boar scent of any one of claims 4 to 8, wherein, The boar scent comprises 100 μg / mL o-aminoacetophenone, 100 μg / mL benzalacetone, 100 μg / mL androstenone, 100 μg / mL androstenol and 100 μg / mL quinoline.

15. The boar scent of any of claims 4-8, wherein, The boar scent comprises 2000 μg / mL o-aminoacetophenone, 2000 μg / mL benzalacetone, 2000 μg / mL androstenone, 2000 μg / mL androstenol and 2000 μg / mL quinoline.

16. A method of preparing a boar scent according to any one of claims 4 to 15, characterized in that, The composition comprises: The component A and the component B are dissolved in a solvent to prepare a boar scent.

17. The preparation method according to claim 16, characterized in that, After the component A and the component B are dissolved in a solvent, a 0.4 μm to 0.5 μm filter membrane is used for filtration treatment.

18. Use of the boar scent of any one of claims 4 to 15 in the preparation of a preparation for promoting the estrus of a gilt and improving the reproductive capacity of a sow.

19. The use according to claim 18, characterized in that, The preparation comprises any one of a cream preparation, a spray preparation and an aerosol preparation.

Images