Dairy cows of different months of age
2019-08-27 13:05:19
Feeding and management of 2-6 months old calves After calf weaning, continue feeding the food for at least two weeks, feeding 1.8-2 kg on the first day, and then feeding the diet to promote growth, the crude protein content is 16%% ~20%% (depending on the quality of the forage) and feed until 6 months old.
The longer the feed is fed, the longer the better. For the roughage of 2~6 months old calves, special care should be taken to ensure high quality, high protein content, no mold, feed must be chopped, leaves more, less stalks, let The cows are allowed to feed freely. The yak at this month's age is better not to feed the fermented coarse material. Only when the calf reaches 4 to 6 months of age can the calf be fed in small amounts. Therefore, yak should use feed with high dry matter content.
For calves before 6 months of age, the main function of the roughage in the diet is only to promote rumen development. Yak's digestibility of dry matter in roughage is much lower than that of cereals. After it grows up and matures, the coarse material in the diet accounts for a considerable share. The more raw material the yak eats for 4-6 months, the more palatable and the quality of the roughage is particularly important. The yak at this stage requires a dry cow bed; there must be plenty of fresh air; the environment of the barn should be clean to make the cow comfortable.
Feeding management for broilers aged 6 months or older. Calves After 6 months of age, the quality and quantity of roughage can determine nutrient balance and intake of roughage.
When forage grass matures, the content of protein, TDN, calcium and phosphorus will be greatly reduced, and the content of fiber will increase. Therefore, the older the forage is, the lower its feeding value will be. Before 8 to 10 months of age, due to the development of the volume and function of the rumen, at this time, relying solely on roughage still can not meet the normal growth needs. Before 6 to 9 months of age, at least half of the dry matter in the roughage should come from hay, and the quality and quantity of concentrated feed at this time depends on the quality of the roughage. The required concentrate, its quality and composition need to be matched with the nutrients obtained in the roughage, and only the analysis and determination of the roughage can ensure the proper fit of the two. The grain mix should be coarse particles with good palatability. After 10~12 months of age, the reserve cattle have been able to feed on silage, and the average daily feed is 5 kg of silage per kilogram of body weight per day. If the corn silage is fed on a free basis, it may cause the condition of the reserve cattle. fat. Only the use of high-energy silage for the 12-month-old or older cattle can be avoided in order to avoid bloating. The limit can be set as the amount of silage that can be digested within 10 to 12 hours. Weigh the daily intake of forage dry matter so that we can estimate the feed intake of roughage. Since silage alone can cause protein deficiency in diets, 1.4-2.3 kg of concentrate containing 20% ​​crude protein should be added to the diet. At the same time, trace element additives and trace minerals are mixed into the concentrate. There must be a source of clean drinking water at all times. With careful diets, there are 5 factors that affect the growth of cattle. They are: nutrition, management, barn, health, and genetics. All these five aspects should be given proper attention, otherwise growth may be hindered.
Breeding management of reserve cattle (12-24 months of age) To obtain the best fertility rate, the reserve cattle should continue to maintain weight gain 30 days before and 30 days after mating, so as to enable estrus performance and preparation for conception. It's full. In the rearing cattle breeding system, there is an important fact that the time when determining the sexual maturity, breeding, and normal delivery of cattle is based on their physical size rather than their age. If the reserves of the reserve cattle are more appropriate, the calving of the backing herds at 24 months of age is achievable. The method is as follows:
Reserve cattle must be conceived at 15 months of age. In order to achieve this goal, the initial allocation should be carried out at 12 months of age, and the remaining 90 days will be used to continue mating the non-pregnancy cattle until they conceive. There are about 4.5 estrus cycles in 90 days, which means 4.5 breeding opportunities.
The date of mating should be expected several months in advance. It is necessary to observe the estrus and record the estrus date. The estrus record helps to predict the estrus at the next breeding time, and it helps to find out the problem that the reserve cattle is in poor early stage. As a result, effective measures can be taken in time to avoid prolonging the mating age.
From breeding to delivery, feeding and management should be precise, both to ensure that the fetus and the mother itself are fully grown, and to minimize the deposition of fat on the breast and the birth canal.
The longer the feed is fed, the longer the better. For the roughage of 2~6 months old calves, special care should be taken to ensure high quality, high protein content, no mold, feed must be chopped, leaves more, less stalks, let The cows are allowed to feed freely. The yak at this month's age is better not to feed the fermented coarse material. Only when the calf reaches 4 to 6 months of age can the calf be fed in small amounts. Therefore, yak should use feed with high dry matter content.
For calves before 6 months of age, the main function of the roughage in the diet is only to promote rumen development. Yak's digestibility of dry matter in roughage is much lower than that of cereals. After it grows up and matures, the coarse material in the diet accounts for a considerable share. The more raw material the yak eats for 4-6 months, the more palatable and the quality of the roughage is particularly important. The yak at this stage requires a dry cow bed; there must be plenty of fresh air; the environment of the barn should be clean to make the cow comfortable.
Feeding management for broilers aged 6 months or older. Calves After 6 months of age, the quality and quantity of roughage can determine nutrient balance and intake of roughage.
When forage grass matures, the content of protein, TDN, calcium and phosphorus will be greatly reduced, and the content of fiber will increase. Therefore, the older the forage is, the lower its feeding value will be. Before 8 to 10 months of age, due to the development of the volume and function of the rumen, at this time, relying solely on roughage still can not meet the normal growth needs. Before 6 to 9 months of age, at least half of the dry matter in the roughage should come from hay, and the quality and quantity of concentrated feed at this time depends on the quality of the roughage. The required concentrate, its quality and composition need to be matched with the nutrients obtained in the roughage, and only the analysis and determination of the roughage can ensure the proper fit of the two. The grain mix should be coarse particles with good palatability. After 10~12 months of age, the reserve cattle have been able to feed on silage, and the average daily feed is 5 kg of silage per kilogram of body weight per day. If the corn silage is fed on a free basis, it may cause the condition of the reserve cattle. fat. Only the use of high-energy silage for the 12-month-old or older cattle can be avoided in order to avoid bloating. The limit can be set as the amount of silage that can be digested within 10 to 12 hours. Weigh the daily intake of forage dry matter so that we can estimate the feed intake of roughage. Since silage alone can cause protein deficiency in diets, 1.4-2.3 kg of concentrate containing 20% ​​crude protein should be added to the diet. At the same time, trace element additives and trace minerals are mixed into the concentrate. There must be a source of clean drinking water at all times. With careful diets, there are 5 factors that affect the growth of cattle. They are: nutrition, management, barn, health, and genetics. All these five aspects should be given proper attention, otherwise growth may be hindered.
Breeding management of reserve cattle (12-24 months of age) To obtain the best fertility rate, the reserve cattle should continue to maintain weight gain 30 days before and 30 days after mating, so as to enable estrus performance and preparation for conception. It's full. In the rearing cattle breeding system, there is an important fact that the time when determining the sexual maturity, breeding, and normal delivery of cattle is based on their physical size rather than their age. If the reserves of the reserve cattle are more appropriate, the calving of the backing herds at 24 months of age is achievable. The method is as follows:
Reserve cattle must be conceived at 15 months of age. In order to achieve this goal, the initial allocation should be carried out at 12 months of age, and the remaining 90 days will be used to continue mating the non-pregnancy cattle until they conceive. There are about 4.5 estrus cycles in 90 days, which means 4.5 breeding opportunities.
The date of mating should be expected several months in advance. It is necessary to observe the estrus and record the estrus date. The estrus record helps to predict the estrus at the next breeding time, and it helps to find out the problem that the reserve cattle is in poor early stage. As a result, effective measures can be taken in time to avoid prolonging the mating age.
From breeding to delivery, feeding and management should be precise, both to ensure that the fetus and the mother itself are fully grown, and to minimize the deposition of fat on the breast and the birth canal.
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