本文選題：玉米 + 小麥　； 參考：《湖南農(nóng)業(yè)大學(xué)》2015年碩士論文

【摘要】：本試驗用玉米-豆粕型和小麥-豆粕型兩種飼糧飼喂AA肉雞,研究不同類型飼糧在減少代謝能時添加GSM,對肉雞生產(chǎn)性能、回腸末端養(yǎng)分消化率和回腸食糜相對粘度的影響,來探究GSM的適宜添加量以及比較GSM在不同類型飼糧中對肉雞的作用,為生產(chǎn)中合理利用GSM節(jié)約能量飼料提供依據(jù)。試驗選用健康的1日齡AA肉雞1296只,隨機分為12個組,每個組9個重復(fù),每個重復(fù)12只雞,公母各半,各重復(fù)仔雞初始體重?zé)o顯著差異(P0.05)。在第1-12組中,第1-6組飼喂玉米-豆粕型飼糧,第7-12組試雞飼喂小麥-豆粕型飼糧,同時,第1-6組飼糧分別為：第1組為正常能量水平的基礎(chǔ)飼糧(飼養(yǎng)分為兩階段,飼糧代謝能分別為12.35MJ/kg和12.77MJ/kg)；第2組和第3組分別為在基礎(chǔ)組飼糧上減0.314 MJ/kg和0.628 MJ/kg代謝能的低能量飼糧；第4、5和6組在第3組的基礎(chǔ)上分別添加300g/t·GSM、600g/t·GSM、300g/t·GSM+500g/t·乳化劑。第7-12組飼糧分別為：第7組為正常能量水平的基礎(chǔ)飼糧組(兩階段飼糧代謝能分別為：12.35MJ/kg和12.77MJ/kg)；第8組和第9組分別為在基礎(chǔ)組飼糧上減0.314 MJ/kg和0.628 MJ/kg代謝能的低能量飼糧；第10、11和12組是在第9組的基礎(chǔ)上分別添加300g/t·GSM、600g/t·GSM、300g/t·GSM+500g/t·乳化劑,試驗全期為42 d。試驗第22 d和第43 d以重復(fù)為單位,空腹稱重,稱剩料重,計算階段體增重(BWG)、采食量(FI)和料重比F/G；試驗44 d時,第3、4、6、9、10和12組每組隨機選取5只肉雞,頸部放血致死后脫毛開膛,取出腸道,結(jié)扎回腸,取出食糜,一部分食糜于-20℃冰凍保存用于測定回腸末端養(yǎng)分消化率及能量利用率,一部分用于測定回腸食糜相對粘度。試驗結(jié)果表明：(1)在玉米-豆粕型飼糧中,與正常代謝能組相比,降低飼糧代謝能并添加GSM對肉雞的生產(chǎn)性能并無改善(P0.05)；在小麥-豆粕型飼糧中,降低飼糧0.628 MJ/kg代謝能并添加600g/t·GSM組能達到與正常代謝能組相當(dāng)?shù)纳a(chǎn)性能(P0.05)且其與第9組相比試雞全期平均體增重增加2.1%,采食量降低2.4%,料重比降低4.9%。(2)在玉米-豆粕型飼糧中添加GSM對肉雞回腸食糜相對粘度無顯著影響(P0.05)；在小麥-豆粕型飼糧中添加GSM極顯著降低回腸食糜相對粘度,降低水平約8.0%(P0.001)。(3)在玉米-豆粕型飼糧中添加GSM對肉雞回腸末端養(yǎng)分消化率影響無明顯作用(P0.05)；在小麥-豆粕型飼糧中添加GSM對肉雞回腸末端養(yǎng)分消化率和表觀代謝能均具有不同程度的改善作用,其中添300g/t·GSM+500g/t·乳化劑能夠極顯著提高回腸末端粗蛋白、磷的消化率(P0.01),提高水平約為：5.5%和0.6%。(4)通過經(jīng)濟效益分析,添加600g/t·GSM產(chǎn)生的經(jīng)濟效益最好。綜合結(jié)果表明：在小麥-豆粕型飼糧中添加GSM能顯著降低腸道食糜粘度,改善部分養(yǎng)分消化率,從而提高肉雞生產(chǎn)性能,而在玉米-豆粕型飼糧中的效果不顯著；小麥-豆粕型飼糧降低0.628 MJ/kg飼糧代謝能同時添加600g/T·GSM能達到正常代謝能組相當(dāng)?shù)纳a(chǎn)性能且產(chǎn)生的經(jīng)濟效益最好,同時GSM與乳化劑聯(lián)用效果優(yōu)于單一使用GSM的效果。
[Abstract]:In this experiment, AA broilers were fed with two kinds of corn soybean meal type and wheat soybean meal type diet. The effects of different types of dietary supplemental GSM on the production performance of broilers, the nutrient digestibility of the ileum and the relative viscosity of the ileum were studied in order to explore the appropriate amount of GSM and to compare the effect of GSM on Broilers in different types of diets. In order to provide the basis for the rational use of GSM energy saving feed in production, 1296 healthy 1 day old AA broilers were randomly divided into 12 groups, each group was repeated 9 repetitions, each repeated 12 chickens, the male parent was half, and the initial weight of the repeated broilers had no significant difference (P0.05). In group 1-12, the 1-6 group was fed corn soybean meal type and 7-12 group. The chickens were fed with wheat - soybean meal, and the 1-6 group of the 1-6 groups were as follows: the first groups were the basal diet of the normal energy level (the feeding was divided into two stages, the diet metabolism was 12.35MJ/kg and 12.77MJ/kg respectively); the second and third groups were low energy diets with 0.314 MJ/kg and 0.628 MJ/kg metabolic energy on the basal diet; 4,5 and 6 respectively. On the basis of the third groups, 300g/t. GSM, 600g/t GSM, 300g/t GSM+500g/t / emulsifier were added respectively. The 7-12 group was divided into seventh groups for the normal energy level of the basal diet group (the two stage of diet metabolism was respectively 12.35MJ/kg and 12.77MJ/kg), and the eighth and ninth groups were 0.314 MJ/kg and 0.628 in the basal diet, respectively. The low energy diet of MJ/kg metabolism; 10,11 and 12 groups were added 300g/t GSM, 600g/t. GSM, 300g/t. GSM+500g/t. Emulsifier on the basis of group ninth. The test was 42 D. test twenty-second D and forty-third d to repeat the unit, the weight of the empty stomach, the weight gain of the calculation stage (BWG), the feed intake and the ratio of feed weight, and the test 44 In group 3,4,6,9,10 and 12, 5 broilers were randomly selected in each group. After the neck bleed to death, the skin was unhairing, the intestine was removed, the ileum was ligated and the chymus was ligated. Some chymodies were frozen at -20 C to determine the nutrient digestibility and energy utilization of the ileum, and some were used to determine the relative viscosity of the ileum. The experimental results showed: (1) jade (1) In the rice soybean meal diet, compared with the normal metabolic energy group, reducing the metabolic energy of the diet and adding GSM did not improve the production performance of the broiler (P0.05). In the wheat soybean meal diet, the reduction of 0.628 MJ/kg metabolism energy and the addition of 600g/t. GSM group could reach the equivalent production performance (P0.05) with the normal metabolic energy group (P0.05). The average body weight gain increased by 2.1%, the feed intake was reduced by 2.4%, and the feed weight ratio decreased by 4.9%. (2) in the corn soybean meal diet with GSM (P0.05). The addition of GSM to the wheat soybean meal diet decreased the relative viscosity of the ileum, and decreased by about 8% (P0.001). (3) in corn soybean meal (3) The effect of adding GSM on the nutrient digestibility of the terminal ileum was not significantly affected (P0.05), and the addition of GSM to the wheat soybean meal diet had different effects on the nutrient digestibility and apparent metabolic energy at the end of the ileum of broilers, and the addition of 300g/t. GSM+500g/t milk chemicals could significantly increase the crude protein at the end of the ileum. The level of phosphorus digestibility (P0.01) is about: 5.5% and 0.6%. (4), through economic benefit analysis, the economic benefit of adding 600g/t. GSM is the best. The comprehensive results show that adding GSM in wheat soybean meal can significantly reduce the viscosity of intestinal chimy, improve the digestibility of some nutrients, and improve the performance of broiler, and in corn soybean meal. The effect of the grain diet was not significant. The reduction of 0.628 MJ/kg diet by wheat soybean meal diet can also add 600g/T GSM to the normal metabolic energy group, which can achieve the best production performance and the economic benefit is best. At the same time, the combination effect of GSM and emulsifier is better than the single use of GSM.
【學(xué)位授予單位】：湖南農(nóng)業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：S831.5

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