檸檬酸鈣(Calcium citrate)在仔豬教槽料上的應(yīng)用

仔豬對鈣的需求量很大，仔豬階段（5~11）Kg對鈣的需求量為0.76%~0.81% ，而玉米 中鈣質(zhì)量分?jǐn)?shù)僅為0.02% ，豆粕中鈣質(zhì)量分?jǐn)?shù)為0.33%，需要額外添加礦物質(zhì)鈣才能滿足仔豬對鈣的需求。目前畜牧生產(chǎn)中，大多使用碳酸鈣（石粉）和磷酸鈣為鈣源，但碳酸鈣和磷酸鈣呈堿性，且系酸力很高，其進入胃內(nèi)后會與大量胃酸反應(yīng)，導(dǎo)致胃腸道內(nèi)ｐＨ值上升；成年豬可分泌足夠的胃酸，但仔豬體內(nèi)酶系統(tǒng)發(fā)育不完善，胃底腺不發(fā)達(dá)，胃酸分泌量少，消化功能不健全 。胃內(nèi)較高的pH值，一方面會降低胰蛋白酶、淀粉酶等酶的活性，導(dǎo)致蛋白質(zhì)的消化率降低，在腸內(nèi)腐敗，腐敗產(chǎn)物對結(jié)腸產(chǎn)生損傷，而結(jié)腸是仔豬吸收水和電解質(zhì)的重要器官；同時蛋白質(zhì)腐敗產(chǎn)物對結(jié)腸黏膜的刺激可促進腸液分泌，糞中水分含量增加，致使出現(xiàn)腹瀉。此外，石粉添加水平過高，影響日糧適口性，導(dǎo)致動物采食量下降。檸檬酸鈣的吸收對胃酸的依賴性不強，甚至可以獨立于消化道內(nèi)環(huán)境完成吸收，所以，檸檬酸鈣為胃酸分泌不足的早期斷奶仔豬提供鈣源，能夠得到更好的效果。

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賴氨酸甘氨酸鎂Magnesium Lysinate Glycinate、甘氨酸谷氨酰胺鎂Magnesium Glycinate Glutamine、檸檬酸蘋果酸鎂Magnesium Citrate Malate、檸檬酸鍶Strontium Citrate、檸檬酸錳Manganese Citrate、檸檬酸銅Copper Citrate、天門冬氨酸鋰Lithium Aspartate、?；撬嵛?/span>Selenium Taurate、抗壞血酸錳Manganese Ascorbate、抗壞血酸亞鐵Ferrous Ascorbate.

Application of calcium citrate in piglet feeding

Piglets have a large demand for calcium, and the demand for calcium in piglet stage (5 to 11) Kg is 0.76% to 0.81%, while the calcium mass fraction in corn is only 0.02%, and the calcium mass fraction in soybean meal is 0.33%, which requires additional mineral calcium to meet the needs of piglets. At present, calcium carbonate (stone powder) and calcium phosphate are mostly used as calcium sources in livestock production. However, calcium carbonate and calcium phosphate are alkaline and have high acid power. After entering the stomach, they will react with a large amount of gastric acid, resulting in an increase in pH value in the gastrointestinal tract. Adult pigs can secrete enough gastric acid, but the piglet's enzyme system is not well developed, the gastric fundus gland is not developed, the gastric acid secretion is small, and the digestive function is not sound. On the one hand, higher pH value in the stomach will reduce the activity of trypsin, amylase and other enzymes, resulting in lower digestibility of protein, and corruption in the intestine, and corruption products will cause damage to the colon, which is an important organ for piglet to absorb water and electrolytes; At the same time, the stimulation of protein spoilage products on the colon mucosa can promote the secretion of intestinal fluid, increase the water content in feces, resulting in diarrhea. In addition, the addition level of stone powder is too high, affecting the palatability of the diet, resulting in a decrease in animal feed intake. The absorption of calcium citrate is not strongly dependent on gastric acid, and can even be absorbed independently of the internal environment of the digestive tract. Therefore, calcium citrate can provide calcium source for early weaned piglets with insufficient gastric acid secretion, and can get better results.

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Magnesium Lysinate Glycinate, Magnesium Glycinate Glutamine, Magnesium Citrate Malate, Strontium citrate Citrate, Manganese Citrate, Copper Citrate, Lithium Aspartate, Selenium Taurate, Manganese ascorbate Ferrous Ascorbate Ascorbate.