The calculation formula and precautions for the expected delivery date of cattle
With the continuous improvement of cattle breeding technology, scientific cattle breeding has become an important part of modern agricultural production. The expected calving date of a cow is an important factor in determining the calving time. Calculating the expected calving date of a cow requires comprehensive consideration of multiple factors. The following is a detailed introduction to the calculation formula and precautions for the expected calving date of a cow.
Estimated delivery date calculation formula
The calculation of the expected date of delivery needs to be calculated based on factors such as the cow\’s estrus period and the length of pregnancy. The commonly used calculation formula is: expected date of birth = breeding day + 280 days – 18 days. Among them, the breeding day refers to the date after the cow is fertilized, 280 days is the average pregnancy time of the cow calculated manually, and 18 days is the number of days considered in advance due to tissue development.
In addition, some farms will use B-ultrasound to determine the cow\’s pregnancy cycle by detecting fetal heartbeat and other indicators to estimate the expected date of delivery.
Notes
When calculating the expected delivery date of cattle, you need to pay attention to the following matters:
1. Determination of the breeding day: Only when the breeding day of the cattle is determined can the accurate calculation of the expected date of delivery be carried out. Under normal circumstances, we can determine the breeding day through various methods such as injection of pregnancy test drugs, impotence cattle, flag inspection, etc.
2. Observation of the cow’s activity level and appetite: As the due date approaches, the cow’s activity level and appetite will decrease. These are signs that the cow is about to give birth. We need to frequently observe the behavior of cows and take timely measures if any abnormalities are found.
3. Determinants of the production environment: The expected date of delivery of a cow may not be accurate to the day. Sometimes it will be earlier or later. This is also affected by factors such as temperature and feeding environment. Therefore, as the due date approaches, we must be prepared to keep the environment clean and tidy to facilitate the smooth delivery of cattle.
Sharing of scientific methods of raising cattle
Scientifically raising cattle requires reasonable selection of breeding methods based on the physiological characteristics of the cattle, the feeding environment, and market demand. The following sections introduce the design of the cowshed, the selection of feeding methods, and feeding management techniques. .
Cattle shed design
I often hear people say: A good cowshed is the foundation of beef. This sentence also illustrates the importance of the cowshed. In the design of a cowshed, the following factors need to be considered:
1. Insulation: The temperature inside the barn should be controlled between 19 and 22°C to ensure the growth and development needs of the cattle.
2. Ventilation: In summer, cow barns can be ventilated by opening windows or installing ventilation facilities to ensure air circulation and reduce indoor temperature.
3. Lighting conditions: Under sufficient sunlight, the physiological functions of cows can be effectively stimulated, which is beneficial to improving production efficiency.
Choice of feeding methods
When raising cattle, different breeds, ages, weights and other factors need to be taken into consideration when choosing the feeding method. Here is a brief introduction to some typical feeding methods:
1. Free-range farming: Free-range farming is suitable for natural grasslands with a better ecological environment and can ensure grazing safety.The area allows cattle to move freely and obtain food in nature.
2. Factory feeding: Factory feeding is suitable for feeding methods based on artificial feed. The cattle will be raised in an internal factory and receive sufficient feed through automatic feeding machines and other equipment.
Tips of feeding management
In the process of raising cattle, reasonable feeding management skills can bring great help to the growth and development of cattle.
1. Selected feed: We need to select high-quality feed according to the growth environment and nutritional needs of the cattle to ensure that the cattle can obtain sufficient nutrition every day.
2. The ratio of forage to concentrated feed: The ratio of forage to concentrated feed needs to be adjusted appropriately according to the growth stage and needs of the cattle. For example, the proportion of forage should be increased in the young cow period to increase the volume of the stomach.
Summary
In the process of scientific cattle breeding, reasonable calculation of the expected date of delivery, scientific selection of feeding methods, and the application of feeding management skills will have a positive impact on the growth and development of cattle. At the same time, the design of the cowshed, reasonable feed selection and proportion also lay a good foundation for the growth and development of cattle. Raising cattle requires a multi-faceted approach. Only reasonable and scientific breeding can bring better economic and social benefits.
