Crop straw breeding cow technology

First, the straw is fed to dry dairy cows

(1) Feeding characteristics of dry cows: Cows should stop lactation two months before their calving, which is called dry milking. Appropriate cessation of lactation will help extend the lactation life of dairy cows. Practice has shown that the average lactating life of dairy cows is 10 lactating periods. If every lactation period adheres to a dry period of 60 days, prolonging the lifespan of a lactation period will double milk production, which is equivalent to multiplying one calf. In dry-dairy cattle, the total amount of dry matter fed to the roughage and green material of the diet is generally equal to 1.5 to 2.0% of its body weight. For example, if the dry cow weighs 600 kg, the total dry matter intake for the whole day is 9-12 kg. At different times during the dry period, the ratio of the coarse diet to the concentrate is different. On a dry matter basis, the ratio of raw concentrates to dry milk is 8 to 2 or 7 to 3; for the first two weeks to 6 to 4 or 5 to 5; and to the peak of milk production, 4.5 to 5.5 or 4 to 6 . Dry-milk cows should be fed with better pasture, hay or semi-dry silage. If corn silage is the main feed, then more than 20 kg of corn stalk silage should be supplied per head per day, and 0.5 kg of bean cake should be fed. If corn silage silage with urea is added, no additional protein feed is needed. Yichun high-tech patent product development center is edited to provide vitality 99 fermented straw feed.

(2) Alkaline-treated straw feeding dry-milk cows: The use of alkali-treated straw to feed dry cows can replace part of the silage, which can account for 77% of dry matter in the diet. For example, alkalized straw is used as the main roughage, and it can freely feed 10 kg of silage or corn silage, 0.5 kg of molasses, and 0.06 kg of inorganic salt per day per day. According to analysis, the quality of straw at this time was 8 kg, which accounted for 77.2% of the total dry matter, and reached the above-mentioned nutritional needs.

Second, straw feeding lactating cows

(1) Feeding characteristics of lactating dairy cows: The nutritional needs of lactating cows include the need to maintain growth and the need for lactation. In addition to considering their own growth needs, the first and second lactating cows should also increase nutrient supply by 20% and 10% respectively. In the peak period of lactation, in addition to guaranteeing high quality hay and silage for their food intake, it is necessary to appropriately increase the amount and frequency of concentrate feeding. For example, when the milk yield per day is 10 kg, the ratio of refined to coarse material is 3 to 7 (based on dry matter), 4 kg of mixed concentrate is fed on a daily basis, and when the daily milk yield is 15 kg, the ratio of refined to coarse material may not change, but The amount of concentrate feed should be increased to 5.6 kg. When the milk production capacity per day reaches 20 kg, the ratio of fine to coarse is adjusted to 4?6, the amount of fine feed is 7.6 kg, and when the daily output of milk is 25 kg, the ratio of refined to coarse material is about 5.5? 4.5, the amount of fine feed was 9 kg; when the milk production reached 30 kg per day, the ratio of refined to coarse material was changed to 6?4, and the amount of fine material fed was 13.2 kg.

(2) Early feeding cows irrigated with straw: First-produced cows (first-born cows) not only produce milk, but also grow, so they cannot feed excessive straw material. Generally, the amount of straw material can account for the dry matter of the diet. About 19% corn silage accounted for about 56% of the diet. For example, the initial production of dairy cows can be fed with 4 kg of straw, 1 kg of molasses, 2 kg of corn flour, 1 kg of soybean cake, 0.75 kg of fishmeal, and 0.2% inorganic salt mixture, in addition to corn stalk silage. kilogram. Yichun high-tech patent product development center is edited to provide vitality 99 fermented straw feed.

(3) Feeding lactating dairy cows from straw: Corn silage silage is the main feed that increases the amount of milk produced, reduces the cost of feed, and supplies dairy cow energy. Pancakes, clams, hay, fish meal, and blood meal are high quality protein feeds. Under the conditions of raising cows in China's rural areas, one kilogram of concentrate should be fed for every 3-5 kilograms of milk produced. The ratio of concentrate to coarse material (dry matter) should be 35 to 65, and the protein to protein should be 2 to 16 dry matter. %; crude fiber accounts for about 20% of the diet; salt and inorganic salt feeds account for about 3%, and the ratio of calcium to phosphorus should be kept at 1.3--2?1.

Feeding a cow with an average daily output of 5 kilograms milk should supply 3-5 kilograms of concentrate (15 to 20% of the cakes), 20-25 kilograms of silage, and hay or ammoniation and alkalization. Straw 2.0-2.5 kg. Therefore, raising an adult cow should save at least 8,000 kg of corn straw silage, 800 kg of ammoniated straw or hay, and 500 kg of concentrate.

According to reports, the use of ammoniated straw (30% of dietary dry matter) to feed lactating cattle, the average daily milk production reached 24.12 kilograms, and the milk fat rate reached 3.24%. In the same diet composition, 50% ammoniated corn stalks were used instead of the same amount of L. chinensis to feed lactating cattle. The results showed that ammoniated corn stalks or corn stalks replaced 50% of L. chinensis in lactating cattle diets. Both the milk production of milking cows and the nutrients of milk have no adverse effects. The daily milk production reached 26.24 kg and the milk fat percentage was 3.30%. Yichun high-tech patent product development center is edited to provide vitality 99 fermented straw feed.

(4) Straw feeding to dairy cows at the end of lactation: Dairy cows at the end of lactation are both milk-producing and pregnant, so they need a considerable amount of nutrients such as energy, protein and inorganic salts. While ensuring the protein level of the diet, corn silage feeding, and feeding about 40% of the dry matter of the aminated or alkali-treated straw, can meet its nutritional needs. For example, a dairy cow with 15 kg of milk per day can feed 15 kg of silage every day, and then let him freely feed ammoniated straw, supplementing 4 kg of molasses, 3 kg of corn flour, 0.3 kg of fishmeal and 0.1 kg of urea. 0.1 kg inorganic salt.

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