Study on concentrated precise feeding pattern based on feeding technology of TMR

Abstract: In order to increase the yield of high producing dairy cows and reduce the cost of production, realizing precise feeding is one of the most important ways to achieve success. In this paper, cows' precise feeding and feeding pattern were studied. This paper takes a single dairy cow as the feeding and management unit, and conducts a study on 200 and 500 cows for the "TMR(total mixed ration)+ concentrate precise feeding" feeding pattern: This study was based on the use of a self-propelled precise feeding machine for a single dairy cow, and constantlyattempted to perfect the equipment and improve the feeding efficiency , feeding precision and the identification distance of the equipment. When the speed of screw shaft is 60 r/min, the feeding efficiency is 2-4 kg/time, feeding precision is not less than 98%, and the identification distance is not less than 0.75 m; According to the situation of the dairy farm, data was taken inside the cowshed and outside the milking parlor feeding, two kinds of ways to a single use, also a combination could be used , adjusted according to the actual situation. The test results indicated that with inside cowshed feeding and cow neck cangue spacing of 1.2 m, with equipment travel speed of 0.45 m/s, the recognition rate is 100%, the recognition accuracy is not less than 96%, the snatch rate of feed is not more than 4%, the system response time is not greater than 2 s, and the feeding time for one hundred dairy cows is not more than 0.4 h. With outside milking parlor feeding and cow neck cangue spacing of 1.4 m, and equipment travel speed of 0.7m/s, the recognition rate is 100%, the recognition accuracy is not less than 99%, the snatch rate of feed is 0, the system response time is not greater than 2s, and the feeding time for one hundred dairy cows is not more than 0.35 h. The feeding quantity of coarse fodder and concentrate food was changeless before and after the test, because the traditional feeding method of high-yielding dairy cow is completed by hand, which is randomness, so it can't accomplish precise feeding, and cannot stimulate the production potential of a high-yielding dairy cow, but the feeding pattern of "TMR + concentrate precise feeding" can do it: Using a "TMR + concentrate precise feeding" feeding pattern, the average milk production of a dairy cow is increased by 0.8 kg/d, day yield. Fluctuation was less than the "TMR + concentrate precise feeding by hand" feeding pattern in 2011, which meant that the cows had good adaptability on the feeding pattern of "TMR + concentrate precise feeding." The results can provide a reference for the further research of cows' feeding and feeding pattern, and construction and reform of dairy farms.