In the process of growth, a cow goes through calf period, suckles and weans after 2 months, which is called weaning period. It began to eat concentrate and grass, and then went through puberty (after 3 ~ 14 months) during its growth, and cows began to breed (14 ~ 24 months). Calving usually begins at the age of 24 months, and then enters lactation.
Extended data
Milk production cycle:
1, milk type
Tall figure, exquisite outline, obvious bony process, thin angle, long and narrow Oracle bone, wide and long hindquarters and wedge-shaped whole body. Thin skin, less subcutaneous fat. The hindquarters are more developed than the forequarters. The breasts are large and plump, compact and not drooping, and spread out obviously after stretching forward. The four areas of the breast develop in a balanced way, the breast interval is obvious but not deep, the attachment is good, the support is tough, the posterior attachment is high and wide, the nipple size is moderate, the spacing between the four nipples is appropriate, and the mammary veins are thick and curved. The adult bull is1.40 ~1.45m in height and 900 ~1200kg in weight. Adult cow 1.30 ~ 1.35 m, weighing 650 ~ 750 kg.
2. Dual-purpose type
Short stature, strong body, full muscles, slightly thick neck, not narrow and thin armor, wide back, full hips and thick legs. The morphological structure of the breast is basically similar to that of the breast type, but the degree of backward extension is poor and the breast is slightly drooping. The adult bull is1.30 ~1.35m in height and 900 ~1000kg in weight. The cow is 1.25 ~ 1.30m in height and 550 ~ 750kg in weight.
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