Compound additive and feed for improving pregnancy of female deer in weaning mating period and application of compound additive and feed

Abstract

The invention belongs to the technical field of feeds, and particularly relates to a compound additive and feed for improving pregnancy of a female deer in a weaning mating period and application of the compound additive and the feed. According to the additive provided by the invention, through specific compatibility of vitamins, trace elements, plant active ingredients and reproductive regulation substances, body condition recovery, follicular development and ovulation synchronization of the female deer are synergistically promoted. Experiments prove that the uterus of the weaned female deer can be recovered as soon as possible, the oestrus span is more concentrated in 25 days, the farrowing rate can be remarkably increased to 113.3%, and the breeding benefit of the red deer is increased by feeding the feed containing the compound additive disclosed by the invention.

Description

Technical Field

[0001] The invention belongs to the technical field of feed, and more particularly relates to a composite additive for improving conception of female deer during the weaning and breeding period, feed and application thereof. Background Art

[0002] In the deer farming industry, reproductive efficiency of female deer is a key factor influencing overall economic profitability. During the critical transition period from weaning to successful breeding, the speed of a doe's recovery and precise regulation of ovulation directly determine subsequent estrus expression and ultimate conception rates, making them crucial for improving reproductive efficiency. However, a common challenge currently faced is that post-weaning does often experience significant delays in their recovery of body condition (e.g., weight and body condition) due to imbalances between nutrient intake and demand (e.g., insufficient or unbalanced energy, protein, minerals, and vitamins), as well as drastic fluctuations and slow recovery of reproductive hormone levels. This slow recovery not only prolongs the null period but also directly inhibits normal ovarian activation and follicular development, ultimately resulting in delayed estrus, indistinct estrus, or ovulation disorders, severely limiting conception rates. Although some single-function feed additives (such as nutritional supplements, specific hormone preparations or antioxidants) have been tried in existing technologies to improve animal reproductive performance, there is still a lack of comprehensive solutions specifically for the special physiological stage of doe from weaning to breeding.

[0003] Therefore, inventing a compound feed additive that can improve the conception of doe deer during the weaning and breeding period, thereby increasing the breeding rate and birth rate of doe deer, is a key issue that needs to be urgently addressed in the future red deer breeding and feed industry. Summary of the Invention

[0004] The invention aims to provide a composite additive, feed and application thereof for improving conception of female deer during weaning and breeding period.

[0005] To achieve the above object, the technical solution adopted by the present invention is: The present invention provides a compound feed additive for improving the conception of female deer during the weaning and breeding period. The compound feed additive comprises the following components, calculated by weight: 20-25 parts of CaCO3, 25-30 parts of CaHPO4·2H2O, 19-20 parts of MgCl2·6H2O, 10-12 parts of NaCl, 0.5-1 part of FeSO4·7H2O, 0.9-1.1 parts of ZnSO4·7H2O, 0.1-0.15 parts of CuSO4·5H2O, 0.4- 0.5 parts of MnSO4·H2O, 0.001~0.002 parts of Na2SeO3·5H2O, 0.005~0.01 parts of KI, 0.001~0.002 parts of CoCl2·6H2O, 5~6 parts of vitamin A acetate, 0.001~0.002 parts of cholecalciferol, 0.00004~0.00006 parts of DL-α-tocopherol acetate, 5~7 parts of NaHCO3, 1~2 parts of astragalus powder, and 0.5~1 part of Chuanxiong powder.

[0006] This invention provides a composite additive specifically for doe deer during the weaning and breeding period. Through a specific combination of vitamins, trace elements, botanical active ingredients, and reproductive regulatory substances, it synergistically promotes doe body condition recovery, follicular development, and synchronized ovulation, significantly improving conception rates. This technology fills a gap in the field of nutritional regulation for deer reproduction and provides an innovative solution for efficient breeding.

[0007] The present invention also provides application of the composite additive in preparing feed for reducing the estrus span of female deer.

[0008] The present invention also provides application of the composite additive in preparing feed for improving the breeding rate of female deer.

[0009] The present invention also provides application of the composite additive in preparing feed for improving the conception rate of female deer during the weaning and breeding period.

[0010] The present invention also provides application of the composite additive in preparing feed for improving the birth rate of doe deer.

[0011] The present invention also provides application of the composite additive in preparing feed for promoting recovery of the uterus of a doe.

[0012] The invention also provides a compound feed for improving conception of female deer during weaning and breeding period, which is prepared by mixing basic feed and compound feed additive.

[0013] Furthermore, the basic feed ingredients, calculated by mass, include: 30 to 40 parts of corn straw, 9 to 11 parts of alfalfa hay, 14 to 16 parts of cottonseed hulls, 10 to 12 parts of corn, 6 to 8 parts of bran, 4 to 6 parts of distiller's grains protein feed, 3 to 5 parts of rapeseed cake, 2 to 4 parts of cottonseed meal, and 3 to 5 parts of corn fiber protein.

[0014] Furthermore, the additive dosage is 5% to 7% of the basic feed mass.

[0015] The present invention has the following beneficial effects: The compound feed additive provided by the present invention, through its unique formula synergistic effect, shows significant comprehensive benefits in improving the reproductive performance of weaned does: Improve feed utilization efficiency and reproductive basis: This additive can effectively improve the nutritional value of basic feed, increase the conception rate of weaned does, and provide a solid nutritional foundation for the recovery of the body condition and reconstruction of the reproductive system function of weaned does.

[0016] Significantly Improves Conception Rate and Reproduction Speed: The core benefit is a significant increase in conception rates among weaned does. Tests have shown that the additive has achieved a 100% breeding rate, meaning all weaned does conceived, significantly accelerating their reproductive turnover (i.e., shortening the time from weaning to successful conception).

[0017] Promoting postpartum uterine involution and estrus regulation: This additive effectively promotes rapid uterine involution (returning the uterus to its normal physiological state after calving) in weaned does, creating a favorable internal environment for the next conception. Furthermore, its physiological regulatory effects lead to more concentrated estrus after weaning. Test data shows that estrus occurs within approximately 25 days, greatly facilitating production management operations such as synchronized estrus processing and centralized breeding, thereby improving management efficiency.

[0018] Breakthrough Improvement in Farrowing Efficiency: One of the most notable effects is the significant increase in farrowing rate. The experimental group using this compound additive achieved a farrowing rate of 113.3%. This figure far exceeds conventional standards and fully demonstrates the additive's powerful effectiveness in promoting ovulation quality, embryo implantation, and fetal development.

[0019] Comprehensively improve the economic benefits of breeding: Through multiple effects such as increasing conception rate, shortening breeding interval, concentrating estrus for easier management, and significantly increasing farrowing rate, this compound feed additive ultimately achieves a leap in the reproductive efficiency of weaned does, significantly improving the overall economic benefits of breeding. DETAILED DESCRIPTION

[0020] The present invention is described in detail below with reference to specific examples, but these examples should not be construed as limiting the present invention. Unless otherwise specified, the technical means used in the following examples are conventional means well known to those skilled in the art, and the materials, reagents, etc. used in the following examples, unless otherwise specified, can be obtained from commercial sources.

[0021] Example 1 1. Preparation of composite additives.

[0022] The composite additive was obtained according to the composition configuration in Table 1.

[0023] Table 1: Compound additive formula 2. The effects of different compound additive formulas on the conception rate of red deer.

[0024] 1. Experimental time and location The feeding trial period is from September 1, 2023 to November 5, 2023, and the trial site is the red deer breeding farm of the 34th Regiment in Tiemenguan City.

[0025] 2. Feeding management Four- to five-year-old Tahe red deer doe weighing 180-200 kg, in similar physical condition, and with normal reproductive health were selected as experimental animals. Fifteen doe were fed under the same conditions and managed twice daily at 9:00 a.m. and 7:00 p.m. The diet formula is shown in Table 2. The control group received bran instead of the compound additive.

[0026] Corn straw, alfalfa hay, cottonseed hulls, corn, bran, distiller's grains protein feed, rapeseed cake, cottonseed meal, and corn fiber protein were purchased from Xinjiang Tiankang Co., Ltd.

[0027] Table 2: Diet formulation 3. Experimental groups: The experiment was divided into 9 experimental groups, which were mainly used to verify and screen the addition amount of fat-soluble vitamins (VA, VD, VE) and Chinese herbal medicines (Astragalus, Chuanxiong). The composition of the composite additives in each experimental group is shown in Table 3.

[0028] Table 3: Added amounts of mineral elements, fatty vitamins and Chinese herbal medicines The amount of compound additives added to the experimental group accounted for 6% of the basic feed mass.

[0029] Table 4: Effects of different compound additives on estrus, breeding and farrowing As shown in Table 4, adding appropriate amounts of fat-soluble vitamins (VA, VD, VE) and Chinese herbal medicines (Astragalus, Chuanxiong) to the mineral element additive premix has a significant effect on estrus and breeding of does, as shown in the following aspects: High VA and VE can induce estrus and breeding of female deer; Significantly shorten the estrus period of female deer (within 35 days), which is helpful for large-scale management and organization of breeding; Significantly increased the first estrus pregnancy rate to 60%; It significantly increased the birth weight of fawns and also improved the survival rate of fawns.

[0030] The results of the composite additive screening showed that the composite additive with the best effect and the lowest economic benefit was Experimental Group 7, which was composed of the basic mineral element additives, with VA16000IU, VD2600IU, VE400IU, Astragalus 15g, and Chuanxiong 5g added to each doe daily.

[0031] 3. Comparison of the effects of composite additives and similar commercial additives.

[0032] 1. Experimental Setup The experiment was divided into three experimental groups, namely, Experiment 1 (basic feed), Experiment 2 (basic feed + compound additives) and Experiment 3 (basic feed + commercially available compound additives). The basic feeds of each experimental group were the same, as shown in Table 5 below. The compound additive in the basic feed of Experiment 1 was replaced with alfalfa hay, and the additive of Experiment 2 was the additive prepared in Example 1.

[0033] Table 5: Feed ingredients and content 2. Experimental results As shown in Table 6, the compound additive significantly promoted uterine recovery in weaned does, concentrating the estrus period around 35 days, facilitating subsequent farrowing, weaning, and group management. The inventive additive group significantly increased the first estrus breeding rate (66.7%) and litter size (17). The inventive additive group achieved a 100% litter survival rate, exceeding both the control group and the commercially available additive group.

[0034] Table 6: Statistics of conception of doe.

[0035] It should be noted that when the claims of the present invention involve numerical ranges, it should be understood that the two endpoints of each numerical range and any numerical value between the two endpoints can be selected. In order to avoid redundancy, the present invention describes preferred embodiments.

[0036] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0037] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. A composite additive for improving conception of doe during weaning and breeding period, characterized in that: Calculated by weight, it is composed of the following components: 20-25 parts of CaCO3, 25-30 parts of CaHPO4·2H2O, 19-20 parts of MgCl2·6H2O, 10-12 parts of NaCl, 0.5-1 part of FeSO4·7H2O, 0.9-1.1 parts of ZnSO4·7H2O, 0.1-0.15 parts of CuSO4·5H2O, and 0.4-0.5 parts of MnSO4·H2O , 0.001~0.002 parts of Na2SeO3·5H2O, 0.005~0.01 parts of KI, 0.001~0.002 parts of CoCl2·6H2O, 5~6 parts of vitamin A acetate, 0.001~0.002 parts of cholecalciferol, 0.00004~0.00006 parts of DL-α-tocopherol acetate, 5~7 parts of NaHCO3, 1~2 parts of astragalus powder, and 0.5~1 part of Chuanxiong powder.

2. Use of the composite additive according to claim 1 in preparing feed for reducing the estrus span of female deer.

3. Use of the composite additive according to claim 1 in preparing feed for improving the breeding rate of female deer.

4. Use of the composite additive according to claim 1 in preparing feed for improving the conception rate of female deer during the weaning and breeding period.

5. Use of the composite additive according to claim 1 in preparing feed for improving the birth rate of doe deer.

6. Use of the composite additive according to claim 1 in preparing feed for promoting uterine recovery in doe.

7. A compound feed for improving conception of doe during weaning and breeding period, characterized in that: The invention is prepared by mixing a basic feed with the compound additive according to claim 1.

8. The compound feed for improving conception of doe during weaning and breeding period according to claim 7, characterized in that: The basic feed ingredients, calculated by mass, include: 30 to 40 parts of corn straw, 9 to 11 parts of alfalfa hay, 14 to 16 parts of cottonseed hulls, 10 to 12 parts of corn, 6 to 8 parts of bran, 4 to 6 parts of distiller's grains protein feed, 3 to 5 parts of rapeseed cake, 2 to 4 parts of cottonseed meal, and 3 to 5 parts of corn fiber protein.

9. The compound feed for improving conception of doe during weaning and breeding period according to claim 8, characterized in that: The additive dosage is 5% to 7% of the basic feed quality.

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