Three methods to identify the age of cattle

First, according to the teeth identification cow teeth tooth growth, replacement, wear degree is a certain rule, identify the age of cattle can be determined according to the cow's incisor changes (ie, according to the growth of milk teeth or milk teeth into permanent teeth and permanent teeth wear degree To judge). The cow's milk teeth (ie, the teeth that grow after birth) are small and white, with obvious tooth necks and large tooth gaps. The permanent teeth (ie, the new teeth that are replaced after the milk teeth are removed) are large, thick and yellowish in color. Neatly, close to each other. About 1 month after the general Yak is born, the first pair of larvae grows. At the age of 4-5 months, the four pairs of larvae grow together and gradually wear and shorten. The buffalo is about 3 years old and the first pair of cattle is 1.5-2 years old. We grow the first pair of permanent teeth, that is, "tooth", and then fall off and renew one pair each year, gradually from "4 teeth", "6 teeth", to "8 teeth (that is, "Qikou"), general buffalo is about 6 years old Qikou, cattle cattle 4.5-5 years old Qikou After the cattle Qikou, the permanent teeth began to wear in sequence, the wear surface gradually changed from a rectangular pattern to a black oval and even to a triangle, the gap between the teeth gradually expanded until the roots exposed and even permanent The teeth appear to fall off, and the rectangular pattern appears on the wear surface of the teeth is “print.” Buffalo is about 7 years old, and the yellow cattle are 5.5 years old and appear “2 prints”, and thus wear 1 pair year after year until “8 prints”, buffalo is about 10 years old. The ox is 8.5-9 years old and the black oval pattern on the tooth wear surface is "beads", the buffalo is about 11 years old, and when the yellow cattle are 9.5-10 years old, "2 beads" appears, and so on until "8 beads" (ie, "Manchu," also known as "old mouth"), Buffalo Manchu is about 14 years old, and Huangniu Manzhu is 12.5-13 years old. Buffalo is over 14 years old, and the cattle have reached the age of 13 years old, and they basically lose their performance. The performance is basically lost. Therefore, when farmers purchase or breed cattle, they must choose the green and the prime year according to the changing rules of the teeth of cattle. Feeding, in order to reduce the loss caused by the aging of the cattle.Second, according to the appearance of the identification according to the appearance of the identification of cattle age, can only identify the young and old, and can not determine the exact age.Generally, young cattle are shiny hair, rough Moderate, soft and elastic skin, full eyelids, bright eyes, lively and actionable; and older cattle, on the contrary, standing upright posture, dull and dull hair, dry skin, sunken eyes, eyes sluggish, more wrinkles around the eyes The behavior of the buffalo is slow, except for the above changes, the buffalo will become darker with age, and the density will become thinner.3.According to the angle wheel, the angle wheel is meant to be the tree's annual ring. The angle wheel is usually in the season of forage shortage, or During pregnancy, due to undernutrition, the cow forms a concave wheel on the surface of each corner of the horn. Therefore, the number of horns plus mating age is the age of the cow, but this is only accurate under normal circumstances. When a cow is empty, aborted, sick, or has nutritional imbalances, the shades of the wheels will not be the same, but they will often have unclear boundaries and will not only form one each year. Calculation of the great and the caster. Otherwise, an error is determined easily lead for good feeding conditions for the bulls, the caster angle is generally not.

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