Pay attention to the cow's several signals to adjust the formula in real time
Pay attention to cow signals There are many cow signals that will give us a reference when designing diet formulas. There are many cow signals that will give us a reference when designing diet formulas. Eating behavior If dairy cows are picky eaters, the reason for picky eaters may be uneven mixing of TMR diets and lengthy cuts of roughage. The cows in the cows will feed concentrates first, and some vulnerable cows will only consume the remaining coarse material. Therefore, in a herd, the difference in the body condition scores of dairy cows will be very large. In addition, the cows eat the concentrate feed first, and then eat the crude material again. “Pre-coarse and coarser†will also make the pH of the rumen unstable. Rumen filling For ruminal filling there is a score of 1 to 5 points, 1 point is poor ruminal filling, and 5 is the best ruminal filling. The rumen crypt is on the left side of the cow, is an inverted triangle type, full of cattle, looks like a big apple at the rumen; also can see if the cow is full by looking at the rumen crypt, if you can not see the rumen crypt The cow is basically full, and if the crypt is very obvious, it means there is no enough food. When assessing the feed intake of cows, several cows should be selected to check the rumen filling. The good rumen filling indicates that enough fiber and dry matter were eaten. Rumination The cows are ruminating for 8 to 10 hours a day. It is normal for 50% of the cows to fall down ruminating. If the diet is formulated reasonably, the cows should chew 50 to 60 times per cud, if the number of chews is less than 40 This time, it was indicated that the feed was too small, and if the number of chewing was more than 70, it meant that the feed was too much. Stool score It can also reflect the formulation of dairy cows' diets. Dairy cows' excrement is too thin, which may be due to too little fiber content in the diet or excessive crude protein content. However, this is not to say that the irrational diet formulation is the only cause of fecal leanness. Mycotoxins also cause cows to become diarrhea. If bubbles are seen in fresh feces, it proves that it is fermented in the intestine. This means that these fermentable nutrients are not used by the rumen, but enter the posterior intestine. The digestive tract is fermented. In this case, the digestibility of dairy cows is very low. Poultry ratio of milk Reflects the content of volatile fatty acids in the rumen. If the ratio of fat to egg is relatively high, it means that the use of fiber by cows is relatively high and the content of acetic acid produced is relatively high; if the ratio of fat to eggs is low, it means Sugar and starch digest more. The ratio of fat to egg is less than 1, and it may be acidosis. Somatic cell count Reflects the cow's health and immune function. Once mycotoxins are present, the number of somatic cells rises very quickly. Some of the symptoms reflected by mycotoxins are common and may be similar to those caused by other diseases, but mycotoxins also have special clinical manifestations. If there is no major change in the infrastructure and bedside of the dairy farm, the cows suddenly appear to have swollen joints. It is probably caused by mycotoxins.
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