Mixed protein source growing pig daily ration for improving amino acid release synchronism

Abstract

The invention discloses mixed protein source growing pig daily ration for improving amino acid release synchronism, relates to mixed protein source growing pig daily ration, and relates to the field of growing pig feed preparation. The invention aims to solve the problem of low nitrogen utilization rate caused by poor amino acid release synchronism of combined daily ration. The feed comprises a basic ration and a premix, wherein a mixed protein source accounts for 19.13% of total protein; the basic ration is prepared from the following components in parts by weight: 11.25 parts of soybean meal, 74.76 parts of corn, 2 parts of corn protein powder, 1.8 parts of wheat bran, 2.5 parts of cottonseed meal, 2.5 parts of DDGS, 1.04 parts of soybean oil, 0.03 part of histidine, 0.04 part of isoleucine, 0.75 part of coated lysine, 0.05 part of methionine, 0.05 part of cystine, 0.16 part of threonine, 0.04 part of tryptophan, 0.07 part of valine, 1.18 parts of limestone, 0.57 part of calcium hydrophosphate, 0.2 part of salt and 1 part of premix. The nitrogen utilization rate of growing pigs is increased, the nitrogen emission content is reduced, and the purposes of saving cost and reducing emission are achieved.

Description

Technical Field

[0001] The present invention relates to a mixed protein source growing pig diet, and relates to the field of growing pig feed formulation. Background Art

[0002] Due to the large price volatility of soybean meal, formulating a mixed protein diet with reduced soybean meal is the future development trend of the pig feed industry. However, the poor synchrony of amino acid release in the mixed diet leads to low nitrogen utilization efficiency and is hindered in pig production applications. Summary of the Invention

[0003] The purpose of the present invention is to solve the technical problem of poor synchrony of amino acid release in the combined diet, resulting in low nitrogen utilization efficiency, and provide a mixed protein source growing pig diet that improves the synchrony of amino acid release.

[0004] The mixed protein source growing pig diet that improves the synchrony of amino acid release includes a basal diet and a premix, and the mixed protein source accounts for 19.13% of the total protein; the basal diet is composed of 11.25 parts of soybean meal, 74.76 parts of corn, 2 parts of corn gluten meal, 1.8 parts of wheat bran, 2.5 parts of cottonseed meal, 2.5 parts of DDGS (dry distillers grains with solubles), 1.04 parts of soybean oil, 0.03 parts of histidine, 0.04 parts of isoleucine, 0.75 parts of coated lysine, 0.05 parts of methionine, 0.05 parts of cystine, 0.16 parts of threonine, 0.04 parts of tryptophan, 0.07 parts of valine, 1.18 parts of limestone, 0.57 parts of monocalcium phosphate, 0.2 parts of salt and 1 part of premix by weight.

[0005] The premix provides 28,500 IU of vitamin A, 3,600 IU of vitamin D, 67.5 IU of vitamin E, 7.5 mg of vitamin K3, 17.5 mg of vitamin B1, 215 mg of vitamin B2, 69 mg of vitamin B6, 0.075 mg of vitamin B12, 70 mg of niacin, 3 mg of folic acid, 0.375 mg of calcium pantothenate, 0.15 mg of antioxidant, 105 mg of choline chloride, 1 mg of CoSO4, 155 mg of CuSO4·5H2O, 145 mg of FeSO4·H2O, 75 mg of MnO, 125 mg of ZnSO4, 0.3 mg of KI, and 0.3 mg of Na2SeO3 per kilogram of diet.

[0006] The present invention only adds coated lysine on the basis of the corn mixed protein diet to improve the synchrony of amino acid release in the diet. After feeding, it significantly improves the nitrogen utilization efficiency of growing pigs, reduces the content of nitrogen emissions, achieves the purpose of "cost reduction and emission reduction", and provides a reference for the scientific formulation of growing pig diets.

[0007] The effects achieved by the present invention are:

[0008] 1. After improving the synchrony of amino acid release, the mixed protein source diet increased the daily weight gain of growing pigs by 2.75% and reduced the feed-to-meat ratio by 3.13% compared with the diet without improved amino acid release synchrony.

[0009] 2. After improving the synchrony of amino acid release, the mixed protein source diet reduced the emissions of fecal nitrogen and urinary nitrogen in growing pigs compared with the diet without improved amino acid release synchrony; increased the nitrogen deposition rate by 5.77%, increased the biological value of protein by 2.79%, and improved the utilization efficiency of nitrogen.

[0010] 3. During the period of fluctuating soybean meal prices, rationally formulate and apply the mixed protein source diet to provide theoretical and technical references for the development of soybean meal-reduced diets.

[0011] 4. Compared with complex feed processing techniques and the addition of various coated amino acids, this feed has a simple process and is convenient to prepare. Specific implementation mode

[0012] The technical solution of the present invention is not limited to the specific implementation modes listed below, but also includes any combination between the specific implementation modes.

[0013] Specific implementation mode 1: The mixed protein source diet for growing pigs that improves the synchrony of amino acid release. The mixed protein source diet for growing pigs that improves the synchrony of amino acid release includes a basal diet and a premix, and the mixed protein source accounts for 19.13% of the total protein; the basal diet is composed of 11.25 parts of soybean meal, 74.76 parts of corn, 2 parts of corn gluten meal, 1.8 parts of wheat bran, 2.5 parts of cottonseed meal, 2.5 parts of DDGS (dry distillers grains with solubles), 1.04 parts of soybean oil, 0.03 parts of histidine, 0.04 parts of isoleucine, 0.75 parts of coated lysine, 0.05 parts of methionine, 0.05 parts of cystine, 0.16 parts of threonine, 0.04 parts of tryptophan, 0.07 parts of valine, 1.18 parts of limestone, 0.57 parts of calcium hydrogen phosphate, 0.2 parts of salt and 1 part of premix by weight.

[0014] Specific Embodiment 2: The difference between this embodiment and Specific Embodiment 1 lies in the mixed protein source growing pig diet that improves the synchronization of amino acid release, which is characterized in that the premix provides 28,500 IU of vitamin A, 36,000 IU of vitamin D3, 67.5 IU of vitamin E, 37.5 mg of vitamin K3, 17.5 mg of vitamin B1, 215 mg of vitamin B2, 69 mg of vitamin B6, 0.075 mg of vitamin B12, 70 mg of niacin, 3 mg of folic acid, 0.375 mg of calcium pantothenate, 0.15 mg of antioxidant, 105 mg of choline chloride, 1 mg of CoSO4, 155 mg of CuSO4·5H2O, 145 mg of FeSO4·H2O, 75 mg of MnO, 125 mg of ZnSO4, 0.3 mg of KI, and 0.3 mg of Na2SeO3 per kilogram of diet. Others are the same as Specific Embodiment 1.

[0015] The following examples are used to verify the effects of the present invention:

[0016] Example 1

[0017] 1. Diet formulation

[0018] Table 1 Composition of feed formula

[0019]

[0020] Note: The premix in Table 1 is composed of the following raw materials in parts by weight: vitamin A, 28500 IU; vitamin D, 36000 IU; vitamin E, 67.5 IU; vitamin K, 37.5 mg; vitamin B1, 17.5 mg; vitamin B2, 215 mg; vitamin B6, 69 mg; vitamin B12, 0.075 mg, niacin 70 mg, folic acid 3 mg, calcium pantothenate 0.375 mg, antioxidant 0.15 mg, choline chloride 105 mg; cobalt sulfate anhydrous 1 mg; copper sulfate pentahydrate, 155 mg; ferrous sulfate 145 mg; manganese monoxide 75 mg; zinc sulfate 125 mg; potassium iodide 0.3 mg; sodium selenite 0.3 mg.

[0021] Table 2 Nutritional levels of two groups of diet formulas

[0022]

[0023] 2. Experimental animals

[0024] Select 10 healthy crossbred (Duroc×Landrace×Yorkshire) growing pigs with similar body weights (31.05±3.92 kg) in the same feeding environment, and randomly divide them into 2 dietary treatment groups, with 5 replicates in each treatment.

[0025] 3. Feeding management

[0026] Accurately monitor the body weight of individual pigs in the experiment and the daily feed intake of each pigsty. Weigh all the remaining feed of individual pigs before the morning feeding on the second day. Record the weights accurately on the 1st and 28th days of the formal experiment to calculate the average daily gain (ADG), average daily feed intake, and feed-to-gain ratio.

[0027] Average daily gain (kg / d) = (final weight - initial weight) / number of feeding days;

[0028] Average daily feed intake (kg / d) = total feed intake during the experimental period / number of feeding days;

[0029] Feed-to-gain ratio = average daily feed intake / average daily gain.

[0030] 4. Sample collection

[0031] In the nitrogen balance experiment, all pigs were placed in stainless steel metabolism cages. During the experiment, they were fed twice a day at 07:00 and 19:00. After 7 days of adapting to the environment and diet, the feed intake at the start of the experiment was maintained at 2.8 times the metabolic body weight (460 kJ of digestible energy × metabolic body weight). On the 12th - 16th days of the experiment, collect all the feces and urine of the pigs at 07:00, and record the weight and volume respectively in plastic bags or plastic bottles.

[0032] Add 10 mL of 10% hydrochloric acid to every 100 g of feces or 100 mL of urine to fix the nitrogen element. Mix the feces of each pig for 5 days, air-dry 400 g of feces at 65 °C, weigh it, and store it in a dry bottle at room temperature. Combine the urine of each pig for 5 days and take 50 mL for measurement.

[0033] The nitrogen content was determined using an automatic Kjeldahl nitrogen analyzer. The calculation formulas are as follows: fecal nitrogen excretion (FN, g / d) = average daily fecal weight × fecal nitrogen content, urinary nitrogen (UN, g / d) = average daily urine volume × urinary nitrogen content, nitrogen intake (NI, g / d) = average daily feed intake × feed nitrogen content, nitrogen excretion (NE, g / d) = UN + FN, nitrogen deposition (ND, g / d) = NI - NE, nitrogen deposition rate (NDR, %) = ND / NI × 100, apparent biological value of protein (ABV, %) = ND / (NI - FN) × 100.

[0034] 5. Experimental results

[0035] Table 3 Comparison of growth performance

[0036]

[0037]

[0038] Table 4 Comparison of nitrogen balance indicators

[0039]

[0040] Note: The figures in the item of "Increase / %" in the table are all integers.

[0041] It can be analyzed from Table 3 and Table 4 that the mixed protein source diet that improves the synchronization of amino acid release can increase the daily weight gain by 2.75%, reduce the feed-to-meat ratio by 3.13%, increase the nitrogen deposition rate by 4.32%, increase the biological value of protein by 2.81%, and can also significantly reduce the excretion of urinary nitrogen and fecal nitrogen. It can be seen that the mixed protein source diet provided by the present invention that improves the synchronization of amino acid release can improve the utilization efficiency of nitrogen in growing pigs, reduce the nitrogen emission, especially during the period of soybean meal price fluctuations, reduce the usage amount of soybean meal, and save the feed cost.

Claims

1. A grower pig diet with a mixed protein source that improves the synchronization of amino acid release, characterized in that The mixed protein source growing pig diet for improving the synchronization of amino acid release includes a basal diet and a premix, and the mixed protein source accounts for 19.13% of the total protein; the basal diet is composed of 11.25 parts of soybean meal, 74.76 parts of corn, 2 parts of corn gluten meal, 1.8 parts of wheat bran, 2.5 parts of cottonseed meal, 2.5 parts of DDGS, 1.04 parts of soybean oil, 0.03 part of histidine, 0.04 part of isoleucine, 0.75 part of coated lysine, 0.05 part of methionine, 0.05 part of cystine, 0.16 part of threonine, 0.04 part of tryptophan, 0.07 part of valine, 1.18 parts of limestone, 0.57 part of calcium hydrogen phosphate, 0.2 part of salt and 1 part of premix by weight.

2. The mixed protein source growing pig diet for improving the synchronization of amino acid release according to claim 1, characterized in that The premix provides 28,500 IU of vitamin A, 36,000 IU of vitamin D, 67.5 IU of vitamin E, 7.5 mg of vitamin K3, 17.5 mg of vitamin B1, 215 mg of vitamin B2, 69 mg of vitamin B6, 0.075 mg of vitamin B12, 70 mg of niacin, 3 mg of folic acid, 0.375 mg of calcium pantothenate, 0.15 mg of antioxidant, 105 mg of choline chloride, 1 mg of CoSO4, 155 mg of CuSO4﹒5H2O, 145 mg of FeSO4﹒H2O, 75 mg of MnO, 125 mg of ZnSO4, 0.3 mg of KI, and 0.3 mg of Na2SeO3 per kilogram of the diet.

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