【摘要】：本試驗(yàn)在補(bǔ)充晶體氨基酸至必需氨基酸平衡的低蛋白(14%)日糧中,研究以其他蛋白源替代豆粕對(duì)仔豬生長(zhǎng)性能、血液生化指標(biāo)、氮平衡、消化動(dòng)力學(xué)的影響,為提高蛋白利用率,增加仔豬氮沉積,降低氮排放,減少豆粕使用量提供理論依據(jù)。本試驗(yàn)采用單因子完全隨機(jī)化設(shè)計(jì),將36頭體重為14.62±1.46kg的杜長(zhǎng)大閹公豬隨機(jī)分為4組,每組9個(gè)重復(fù),每個(gè)重復(fù)1頭豬,分別飼喂蛋白源由豆粕、棉籽粕、豆粕-棉籽粕和魚(yú)粉組成的日糧,預(yù)飼期5d,正試期28d。結(jié)果表明:1、棉籽粕組對(duì)試驗(yàn)豬的平均末重、平均日采食量和平均日增重的降低和料重比的升高具有顯著性影響(P0.05);豆粕-棉籽粕組末重、平均日采食量和平均日增重略低于豆粕組而料重比略高,且差異不顯著(P0.05);魚(yú)粉組的平均末重、平均日增重顯著降低且料重比顯著升高(P0.05),但平均日采食量與豆粕差異不顯著(P0.05)。2、棉籽粕組尿氮含量、血清尿素含量和氮排泄顯著高于其他組(P0.05),氮沉積率顯著低于其他組(P0.05);豆粕-棉籽粕組氮沉積率與魚(yú)粉差異不顯著而顯著高于豆粕組(P0.05),而氮排放顯著低于豆粕組(P0.05),豆粕-棉籽粕組的日氮排放較豆粕組降低10.68%。3、不同蛋白源對(duì)小腸食糜蛋白消化率和氨基酸含量影響差異較大。豆粕日糧在空腸后段出現(xiàn)蛋白消化率峰值,棉籽粕日糧在小腸前段即出現(xiàn)蛋白消化率峰值,氨基酸大量被降解吸收,魚(yú)粉日糧在回腸才出現(xiàn)消化率最大值,降解出的氨基酸未能被完全吸收,豆粕-棉籽粕日糧在整個(gè)小腸中蛋白消化率較高且變化平穩(wěn),氨基酸勻速釋放且釋放量較大。
[Abstract]:In this experiment, the effects of replacing soybean meal with other protein sources on growth performance, blood biochemical indexes, nitrogen balance and digestion kinetics of piglets were studied in a low protein (14%) diet supplemented with crystal amino acid to essential amino acid balance. In order to improve protein utilization, increase nitrogen deposition in piglets, reduce nitrogen emissions and reduce soybean meal use, the theoretical basis was provided. In this experiment, 36 Duchang castrated boars weighing 14.62 鹵1.46kg were randomly divided into 4 groups, each with 9 replicates, one pig per repeat, and were fed with protein source soybean meal and cottonseed meal, respectively, using a single-factor completely randomized design, and divided them into four groups at random, namely, soybean meal, cottonseed meal, soybean meal and cottonseed meal, respectively. A diet consisting of soybean meal-cottonseed meal and fish meal for a period of 5 days and a trial period of 28 d. The results showed that: (1) the cotton seed meal group had significant effects on the average final weight, average daily feed intake, average daily gain and the increase of feed-to-weight ratio of the tested pigs (P0.05); The final weight, average daily feed intake and average daily gain of soybean meal-cottonseed meal group were slightly lower than those of soybean meal group, while the feed-weight ratio of soybean meal-cottonseed meal group was slightly higher, and the difference was not significant (P0.05). The average final weight, average daily gain and feed / weight ratio of fish meal group were significantly lower than those of soybean meal group (P0.05), but there was no significant difference between the average daily intake and soybean meal (P0.05). 2. The content of urine nitrogen in cottonseed meal group was significantly higher than that of cottonseed meal group (P0.05). Serum urea content and nitrogen excretion were significantly higher than those of other groups (P0.05), and nitrogen deposition rate was significantly lower than that of other groups (P0.05). The nitrogen deposition rate of soybean meal-cottonseed meal group was significantly higher than that of soybean meal group (P0.05), while the nitrogen emission of soybean meal-cottonseed meal group was significantly lower than that of soybean meal group (P0.05). The daily nitrogen emission of soybean meal-cottonseed meal group was 10.68% lower than that of soybean meal group. The effect of different protein sources on the digestibility and amino acid content of intestinal chyme protein was significant. The protein digestibility of soybean meal diet and cottonseed meal diet appeared peak value in the posterior part of jejunum, cottonseed meal diet, amino acid degradation and absorption, and the maximum digestibility of fish meal diet appeared only in ileum, and the protein digestibility of cottonseed meal diet appeared in the anterior part of small intestine, and the amino acid was degraded and absorbed. The protein digestibility of soybean meal-cottonseed meal diet was higher and the change was stable. The amino acid was released at a constant rate and the release amount was higher than that of soybean meal-cottonseed meal diet.
【學(xué)位授予單位】：吉林農(nóng)業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：S828.5

【參考文獻(xiàn)】

相關(guān)期刊論文 前4條

1 馬得瑩,單安山,李群道;中草藥添加劑對(duì)蛋雛雞生長(zhǎng)性能和免疫功能的影響[J];動(dòng)物營(yíng)養(yǎng)學(xué)報(bào);2004年02期

2 竇勇;彭聚華;胡佩紅;顧鵬程;;低蛋白日糧中添加復(fù)合酶制劑對(duì)仔豬生產(chǎn)性能、表觀消化率及氮排放量的影響[J];河南農(nóng)業(yè)科學(xué);2014年09期

3 黃偉民;C.R.Katholi;W.T.Woods;;棉酚對(duì)大白鼠心臟的致心律失常作用[J];上海醫(yī)學(xué);1985年05期

4 劉堯君;任曼;曾祥芳;譙仕彥;;低氮日糧補(bǔ)充支鏈氨基酸提高斷奶仔豬生長(zhǎng)性能和氮的利用效率[J];中國(guó)畜牧雜志;2014年07期

相關(guān)碩士學(xué)位論文 前1條

1 夏彥斌;飼糧蛋白質(zhì)水平和色氨酸添加量對(duì)斷奶仔豬生長(zhǎng)性能及血液生化指標(biāo)的影響[D];揚(yáng)州大學(xué);2012年

，

本文編號(hào)：2452960