The action of sodium bicarbonate: neutralize gastric acid, dissolve mucus, reduce the viscosity of digestive juice, and strengthen the contraction of gastrointestinal tract, play a role in stomach, acid and appetite. The effect of sodium bicarbonate on poultry is particularly evident.
The addition of sodium bicarbonate to the feed can supplement the reduction of carbonate in the blood caused by hot wheezing (exhaled CO2 exhaled), thereby improving the body's calcium metabolism. It can improve the mobility of phosphorus in egg poultry. In order to form a good eggshell, it is necessary to maintain a suitable phosphorus concentration in the blood, so that the concentration of blood night phosphorus in the egg can be maintained at an optimum level necessary for forming an eggshell. Sodium bicarbonate can liberate CO2 in the digestive tract, thereby taking away a lot of heat, which is beneficial to maintain the body's heat balance during hot weather. The addition of sodium bicarbonate to the feed provides a source of sodium to maintain a proper sodium concentration in the blood.
chicken
Adding an appropriate amount of sodium bicarbonate to the diet of the laying hens in summer can increase the egg production rate and eggshell strength.
Tests have shown that at 25-30 ° C, for every 1 ° C increase in ambient temperature, the egg production rate is reduced by 1.5%, egg weight is reduced by 0.3 g, and long-term higher than 22 ° C will make the eggshell thinner and the egg weight lower. Yan Jun et al (1990) tested with 53-week-old laying hens in the summer. In each group, 0.3 g of sodium bicarbonate was added to the basal diet (containing 0.2% of salt) per day, and the control group did not add sodium bicarbonate. The grain contains 0.3% salt. Results The egg production rate, eggshell density, eggshell percentage and eggshell thickness of the experimental group were increased by 11.15%, 0.20%, 1.10% and 3.57%, respectively. The egg production rate was significantly different (P<0.05). Liu Shenting et al. (1987) used Jingbai laying hens to add 0.5% sodium bicarbonate to the summer diet. As a result, the egg production rate was increased by 3.3%, the eggshell quality was increased by 0.55, and the blood alkali storage was increased by 45 mg/L. Zhou Ming (1996) studied the suitable ratio of chloride to bicarbonate in laying hen diets during high temperature seasons. In the high temperature season, the addition of 0.2% sodium chloride (the total amount of dietary chloride is 0.35%) and 0.2% sodium bicarbonate (the total amount of dietary bicarbonate is 0.38%) can be significantly improved. Chicken egg production rate, eggshell quality and feed conversion ratio (P<0.01). A suitable ratio of chloride to bicarbonate in the diet of the laying hen is 35:38. According to a study by the ICI company in the United Kingdom (1988), sodium bicarbonate was continuously added to the laying hens for 8 months at different levels of 0.1% to 1.0%. The results showed that the egg production rate of all sodium bicarbonate groups was increased. Both increase, the eggshell strength can be increased by up to 8%. Adding 0.3% sodium bicarbonate to the standard laying hen feed, after adding the egg laying peak of the group chicken, the process of decreasing the egg production rate with the increase of age is alleviated, and the broken egg is reduced by 1% to 2%. They also studied the interaction between sodium bicarbonate and phosphorus. When the sodium content of sodium bicarbonate as the sodium source is 0.55%, the phosphorus content is 0.30%, the egg production rate is 75%, and the phosphorus content is 0.75%. The egg production rate is 77%. The test results also show that the nitrogen utilization rate will increase by 3% due to the addition of sodium bicarbonate.
Duck
Adding an appropriate amount of sodium bicarbonate to the summer egg and duck diet can increase the egg production rate and reduce the rate of broken eggs and mortality.
Wu Lingqian et al. (1998) reported that 0.4% sodium bicarbonate was added to the egg duck diet during the summer season, while the salt dosage was reduced from 0.3% to 0.15%, and the egg production rate was increased by 5.8%, the difference was significant (P<0.05). The rate of broken eggs and mortality decreased significantly, the difference was extremely significant (P<0.01); the difference in feed compensation was 6.8% (P<0.05).
Broiler
Adding proper amount of sodium bicarbonate to broiler feed can increase carcass grade and weight gain, reduce water intake, improve litter condition, reduce mortality and reduce the incidence of certain diseases.
Adding sodium bicarbonate from the broiler feed 0.1% to 0.5% has a significant effect on improving the carcass grade and weight gain of broilers. British researchers reported that sodium bicarbonate was used instead of sodium chloride as a source of sodium in broiler feed. The amount of water consumed by the chicken was reduced and the condition of the litter was improved. When the sodium content of the diet was 0.12% to 0.28%, the body weight of the 4-week-old broiler chickens was 889 g in the sodium bicarbonate diet group and 861 g in the sodium chloride diet group, which was significantly different by variance analysis. Adding sodium bicarbonate to broiler feed also reduces mortality and reduces the incidence of certain diseases. Owen (1994) and other studies have shown that the addition of sodium bicarbonate to the practical diet of corn-soybean meal makes the diet alkalized, greatly reducing the incidence of ascites. In high-altitude environments (in a low-pressure room at an altitude of 3000 m), 42% of broilers fed the basal diet died of ascites, while only 24% of broilers with 1% sodium bicarbonate in the basal diet died. Ascites, mortality is significantly reduced. According to Phelps (1989), the addition of 10 g of sodium bicarbonate significantly reduced the incidence of chicken stomach erosion in 1 kg of broiler feed with 90 g of fishmeal. Japan Yamanashi County Livestock Testing Ground (1990) showed that when the temperature was above 28 °C, 0.63% sodium bicarbonate was added to the broiler diet at 42-63 days old, and the mortality rate was 4.88%. The mortality rate is 7.85%. Considering the acid-base balance of the chicken body, the addition of sodium bicarbonate can reduce the death caused by heatstroke.
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