2021-03-26返回目录
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Contact Us1. Phosphorus distribution and physiological functions in poultry chicken layers
禽体中约80％的磷是在骨骼中，其大部分剩余部分构成软组织成分，并且小部分位于体液中。骨骼中的磷和钙形成为羟基磷灰石的形式。家禽血液含有比马，牛，绵羊，猪和其他哺乳动物更高的磷。它通常含有每100毫升血液的35至45毫克磷。蛋的磷含量为约160mg，其中蛋黄中含有130-140mg，壳中含有20mg。它将增加鸡蛋时磷的分解代谢，并且来自身体的磷的损失高于鸡蛋的磷含量。
因此,当补充磷,可以的t just consider the part of the egg in order to maintain the balance of phosphorus metabolism in the body. The physiological function of phosphorus, in addition to forming bone tissue together with calcium, is mainly involved in many metabolic processes in the form of phosphate radicals, such as participating in the process of oxidative phosphorylation to form high-energy phosphorus-containing compounds, and storing energy in high-energy phosphate bonds for the body's life Required for activities. Phosphorus is related to the synthesis of ribonucleic acid, deoxyribonucleic acid and many coenzymes (pyridoxal phosphate, flavoprotein, coenzyme Ⅰ and coenzyme Ⅱ, etc.). It participates in the synthesis and degradation metabolism of sugar, fat, protein and other organic substances, and the combination of phospholipids and protein Phosphorus, a constituent of cell membranes, is also involved in the regulation of body fluid acid and alkali balance in the form of hydrogen phosphate.
2. Poultry chicken layer's absorption and metabolism of phosphorus
Phosphorus is mainly absorbed by the body in the form of phosphate ions, and the absorption site is mainly in the back of the small intestine. The absorption of phosphorus is affected by the pH of the absorption site, the solubility of phosphorus source phosphorus, and the levels of sodium, calcium, magnesium, iron, aluminum and other elements in the intestine. As the pH value changes, phosphorus can be absorbed in the form of monovalent dihydrogen phosphate or divalent hydrogen phosphate. When the relative pH of the small intestinal juice is constant and the sodium concentration increases, the absorption of phosphorus increases. When phosphate is absorbed, it is necessary to dissolve it in the small intestine.
The salt formed by metal ions such as calcium, magnesium, iron, aluminum and phosphate in the intestine is difficult to dissolve in water, thereby reducing the absorption of phosphorus. In contrast, inorganic phosphorus has a high absorption rate, while organic phosphorus (phytate phosphorus) is not easily used by poultry. Phosphorus metabolism in bones is dynamic. On the one hand, the body uses the phosphorus in the bones to adapt to the physiological process of the body; on the other hand, the body continuously absorbs the phosphorus in the diet and supplements it to the bones. Excessive phosphorus in the body is mainly excreted in urine; phosphorus in feces mainly includes undigested and absorbed phosphorus, while another small part comes from digestive juices.
3. The role of phosphorus
用于检测磷充足性的指标包括每日增益，饲料薪酬，日常消费，蛋白强度，骨强度，骨灰和磷含量，以及其他指标包括血液磷酸盐浓度和碱性磷酸酶活性。为了确定家禽的适当钙和磷营养需求，确定家禽中钙和磷的适当分布和生理功能。在骨骼中发现了大约80％的家禽生物中的磷，并且大部分剩余的构成软组织成分，并且在体液中发现小部分。在。磷和骨钙以羟基磷灰石的形式形成。家禽血液含有比马，牛，绵羊，猪和其他哺乳动物更高的磷。它通常含有每100毫升血液的35至45毫克磷。
蛋的磷含量为约160mg，其中蛋黄中含有130-140mg，壳中含有20mg。它将增加鸡蛋时磷的分解代谢，并且来自身体的磷的损失高于鸡蛋的磷含量。因此,当补充磷,可以的t just consider the part of the egg in order to maintain the balance of phosphorus metabolism in the body. The physiological function of phosphorus, in addition to forming bone tissue together with calcium, is mainly involved in many metabolic processes in the form of phosphate radicals, such as participating in the process of oxidative phosphorylation to form high-energy phosphorus-containing compounds, and storing energy in high-energy phosphate bonds for the body's life Required for activities.
磷是related to the synthesis of ribonucleic acid, deoxyribonucleic acid and many coenzymes (pyridoxal phosphate, flavoprotein, coenzyme Ⅰ and coenzyme Ⅱ, etc.). It participates in the synthesis and degradation metabolism of sugar, fat, protein and other organic substances, and the combination of phospholipids and protein Phosphorus, a constituent of cell membranes, is also involved in the regulation of body fluid acid and alkali balance in the form of hydrogen phosphate.
4. The source of phosphorus in poultry chicken layer feed
As a source of phosphorus in poultry diets, minerals include calcium dihydrogen phosphate, calcium hydrogen phosphate, calcium phosphate and steamed bone meal, among which the most commonly used are calcium hydrogen phosphate and steamed bone meal. Fish meal has the highest phosphorus content in poultry feed, and the phosphorus content in cereal seeds and its by-products is also very rich. In cereal seed feed, 30% to 70% of phosphorus exists in the form of phytate phosphorus, which must be hydrolyzed before it can be used. Due to the lack of phytase that hydrolyzes phytate phosphorus in the digestive tract of poultry, the phosphorus in phytate cannot be used effectively, and there is phytase in plant feed.
通常，家禽总磷要求中无机磷的比例应为30％。植物不能被家禽消化和使用植物磷，但用粪便排出，导致磷资源浪费并导致环境污染;另一方面，植物磷是一种抗营养因子，其可以在难以溶解的消化道螯合物中用许多矿物质和蛋白质形成，从而降低它们的营养价值。
In addition, phytate phosphorus and its incomplete decomposition products can also inhibit the activity of digestive enzymes and affect the normal metabolism of nutrients. For this reason, in order to reduce the pollution of phosphorus in manure to the environment, improve the utilization of phosphorus in feed, and reduce the anti-nutritional effect of phytate phosphorus, people began to add microbial phytase to poultry feed to facilitate the use of phytate phosphorus by poultry.
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