Feeding Techniques for Dairy Cows in Summer
2019-07-23 15:03:22
Dairy cows are cold and heat-fighting livestock, and their suitable growth environment temperature is 10 to 20°C. Under normal circumstances, when the ambient temperature is 4 to 24°C and the relative humidity is 60% to 80%, the effect on the milk production is small. When the ambient temperature rises above 25°C, it has adverse effects on the milk yield of dairy cows. And the greater the impact on cows that produce more milk, the lower the milk production by 5 to 10 kg. The focus of dairy management in summer is to prevent heatstroke and cool down, so as to relieve the damage of dairy cows caused by high temperature and high humidity. But this is only one aspect of dairy management in the summer. In production, most farmers only pay attention to regulating the breeding environment and neglecting the adjustment of feed structure and the improvement of feeding technology, thus affecting the improvement of economic efficiency.
1 Feeds have high temperatures in summer, and the appetite of dairy cows is reduced, and feed intake is reduced, resulting in inadequate nutrition and decreased milk production. It was determined that the intake of dairy cows began to decrease at 22-25°C, and decreased by 40% at 30°C. Therefore, summer should focus on improving the appetite of dairy cows, and add some feeds such as alfalfa hay, carrots, and beets, which are good in palatability and easy to digest. Appropriate amounts of fatty acid calcium and whole-grain seed can be added to the feed to increase the fat content in the diet by 5% to 7%. At the same time, diets in the summer should be as small and high in concentration as possible to meet individual nutritional needs.
2 The higher temperature of the feeding method can easily lead to deterioration of the feed by fermentation. Therefore, attention should be paid to the feeding method. Dairy cows during the lactation period are fed 1 to 1.5 kg per kilogram of body weight per day in the summer. Feed 35~45kg of green and blue succulent daily. Feed 4 times a day.
3 Time should be chosen to increase the amount of feed at night when the temperature is relatively low during the day. Feeding from 8:00 pm to 8:00 the next morning can account for 60% to 70% of the whole day's feeding amount, so as to ensure that the cows can ingest enough nutrients every day to give full play to their potential for milk production.
4 drinking water in the summer should ensure that the cow drink clean and adequate drinking water, and increase the drinking water spacing. Water temperature is best at 10-15°C.
5 Additives In the hot summer months, the lack of minerals is often caused by increased breathing and perspiration. Therefore, appropriate potassium, sodium, magnesium, calcium, phosphorus and other minerals should be added to the diet. Potassium can be added to account for 0.8% to 1.3% of dietary dry matter, 0.5% sodium, and 0.3% magnesium. Experiments have shown that adding 5 mg of potassium iodide per day to the daily diet of cows in the summer can greatly reduce the impact of heat stress on dairy cows and increase the milk production of dairy cows by 24%. In addition, methionine is known as a feed protein fortifier. If 1 to 2 kg of methionine is added to the feed per ton of dairy cow, the milk production of dairy cows can be increased by 15% to 24%, and the feed conversion ratio can be increased by more than 100%. Urea Phosphate is a new type of accelerant for domestic ruminants such as cattle and sheep. If a daily supplement of 150g is given to each cow, the daily milk yield can be increased by 1.33kg, and the daily weight gain and feed conversion rate can be increased by 10% and 8% respectively. .
1 Feeds have high temperatures in summer, and the appetite of dairy cows is reduced, and feed intake is reduced, resulting in inadequate nutrition and decreased milk production. It was determined that the intake of dairy cows began to decrease at 22-25°C, and decreased by 40% at 30°C. Therefore, summer should focus on improving the appetite of dairy cows, and add some feeds such as alfalfa hay, carrots, and beets, which are good in palatability and easy to digest. Appropriate amounts of fatty acid calcium and whole-grain seed can be added to the feed to increase the fat content in the diet by 5% to 7%. At the same time, diets in the summer should be as small and high in concentration as possible to meet individual nutritional needs.
2 The higher temperature of the feeding method can easily lead to deterioration of the feed by fermentation. Therefore, attention should be paid to the feeding method. Dairy cows during the lactation period are fed 1 to 1.5 kg per kilogram of body weight per day in the summer. Feed 35~45kg of green and blue succulent daily. Feed 4 times a day.
3 Time should be chosen to increase the amount of feed at night when the temperature is relatively low during the day. Feeding from 8:00 pm to 8:00 the next morning can account for 60% to 70% of the whole day's feeding amount, so as to ensure that the cows can ingest enough nutrients every day to give full play to their potential for milk production.
4 drinking water in the summer should ensure that the cow drink clean and adequate drinking water, and increase the drinking water spacing. Water temperature is best at 10-15°C.
5 Additives In the hot summer months, the lack of minerals is often caused by increased breathing and perspiration. Therefore, appropriate potassium, sodium, magnesium, calcium, phosphorus and other minerals should be added to the diet. Potassium can be added to account for 0.8% to 1.3% of dietary dry matter, 0.5% sodium, and 0.3% magnesium. Experiments have shown that adding 5 mg of potassium iodide per day to the daily diet of cows in the summer can greatly reduce the impact of heat stress on dairy cows and increase the milk production of dairy cows by 24%. In addition, methionine is known as a feed protein fortifier. If 1 to 2 kg of methionine is added to the feed per ton of dairy cow, the milk production of dairy cows can be increased by 15% to 24%, and the feed conversion ratio can be increased by more than 100%. Urea Phosphate is a new type of accelerant for domestic ruminants such as cattle and sheep. If a daily supplement of 150g is given to each cow, the daily milk yield can be increased by 1.33kg, and the daily weight gain and feed conversion rate can be increased by 10% and 8% respectively. .
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