本文選題：鉬　切入點：鎘　出處：《江西農(nóng)業(yè)大學》2015年碩士論文　論文類型：學位論文

【摘要】：本試驗旨在探討鉬鎘聯(lián)合誘導對鴨組織器官微量元素含量的影響。選360羽(公母各半)11日齡“江南2號”麻鴨,隨機分成6組(對照組、低鉬組、高鉬組、鎘組、低鉬鎘組和高鉬鎘組),對照組飼喂基礎日糧,其余各組分別在每kg基礎日糧中添加Mo 15mg、Mo 100mg、Cd 4mg、Mo 15mg+Cd 4mg以及Mo 100mg+Cd4mg。鉬源為七鉬酸銨[(NH4)6Mo7O24·4H2O],鎘源為硫酸鎘(3CdSO4·8H2O)。試驗周期為120d,分別于試驗第30d、60d、90d和120d隨機選取10羽鴨(公母各半)采集肝、腎、心、肺、大腸、小腸、肌胃、腺胃、氣管、食管、胰、大腦、肌肉、羽毛、皮膚、喙、睪丸、糞便、蛋等組織,測定組織中鉬、鎘、銅、鐵、鋅、硒的含量。結果如下:1、日糧中添加鉬可使組織器官鉬含量升高(P0.05或P0.01),且隨鉬濃度升高而上升,表現(xiàn)出劑量效應;同一鉬水平下,添加硫酸鎘使組織器官鉬含量下降(P0.05或P0.01)。2、日糧中添加鎘可使組織器官鎘含量升高,與對照組比較有顯著差異或極顯著差異(P0.05或P0.01),肝、腎是鎘蓄積的主要靶器官。3、鉬鎘聯(lián)合誘導使組織器官銅含量下降,高鉬組、鎘組、低鉬鎘組、高鉬鎘組組織器官銅極顯著低于對照組(P0.01)。4、鉬鎘聯(lián)合誘導使組織器官鐵含量下降,高鉬鎘組組織器官鐵顯著低于對照組(P0.05)。5、鉬鎘聯(lián)合誘導使組織器官鋅含量下降,高鉬組顯著低于對照組(P0.05);高鉬鎘組極顯著低于對照組(P0.01)。6、低鉬組、高鉬組對組織器官硒含量影響不大(P0.05);鎘組、低鉬鎘組、高鉬鎘組顯著低于對照組(P0.05)。結果顯示:鉬鎘聯(lián)合誘導可致組織器官鉬、鎘含量升高,七鉬酸銨協(xié)同硫酸鎘的吸收;鉬鎘聯(lián)合誘導拮抗銅、鐵、鋅、硒的吸收,導致機體微量元素銅、鐵、鋅、硒含量降低,鉬、鎘呈協(xié)同效應。
[Abstract]:The purpose of this study was to investigate the effect of combined induction of molybdenum and cadmium on the contents of trace elements in tissues and organs of ducks. 360 ducks (male and female) were randomly divided into 6 groups (control group, low molybdenum group, high molybdenum group, cadmium group). Low molybdenum and cadmium groups and high molybdenum and cadmium groups were fed with basal diet. The other groups were fed with Mo 15mg / kg basal diet supplemented with Mo 15mg / kg Mo 100mgU CD 4mg Cd4mg and Mo 100mg CD 4mg Cd4mg, respectively. The molybdenum source was ammonium heptamolybdate (NH 4Mo 4Mo 7O 24 路4H 2O) and the cadmium source was cadmium sulfate 3CdSO 4 路8H 2O. The experimental period was 120 days. The liver, kidney and kidney of 10 ducks (male and female) were randomly selected for 90 d and 120 d, respectively, on the 30th day, 60d, 90d and 120d after the experiment, the source of molybdenum was ammonium heptomolybdate (NH _ 4N _ 6Mo _ 7O _ 4 路4H _ 2O). Heart, lung, large intestine, small intestine, muscle stomach, glandular stomach, trachea, esophagus, pancreas, brain, muscle, feather, skin, beak, testis, feces, eggs and other tissues were determined for molybdenum, cadmium, copper, iron, zinc, etc. The results were as follows: 1: 1. The molybdenum content in tissues and organs was increased by P 0.05 or P 0.01g, and increased with the increase of molybdenum concentration, showing a dose-effect; under the same molybdenum level, The content of molybdenum in tissues and organs was decreased by adding cadmium sulfate. The content of cadmium in tissues and organs was increased by adding cadmium in diet. Compared with the control group, there was significant difference (P0.05) or P0.01g (P 0.01), liver, liver, liver, liver, liver, liver, liver, liver, liver, liver, liver, liver, liver, liver and liver. Kidney is the main target organ of cadmium accumulation. Combined induction of molybdenum and cadmium decreased copper content in tissues and organs. Copper content in tissues and organs in high molybdenum group, cadmium group, low molybdenum cadmium group, high molybdenum cadmium group and high molybdenum cadmium group was significantly lower than that in control group (P 0.01. 4). Iron in tissues and organs of high molybdenum and cadmium group was significantly lower than that of control group (P 0.05. 5). The content of zinc in tissues and organs was decreased in combination with molybdenum and cadmium, and was significantly lower in high molybdenum and cadmium group than in control group, and was significantly lower in high molybdenum cadmium group than that in control group. The effect of high molybdenum group on tissue and organ selenium content was not significant, while that of cadmium group, low molybdenum cadmium group and high molybdenum cadmium group was significantly lower than that of control group (P 0.05). The results showed that the combined induction of molybdenum and cadmium could increase the content of molybdenum and cadmium in tissues and organs, and the absorption of ammonium heptomolybdate in combination with cadmium sulfate; Molybdenum and cadmium combined to antagonize the absorption of copper, iron, zinc and selenium, which resulted in the decrease of trace elements copper, iron, zinc and selenium, and the synergistic effect of molybdenum and cadmium on the absorption of copper, iron, zinc and selenium.
【學位授予單位】：江西農(nóng)業(yè)大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：S834

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