【摘要】：本論文通過兩個(gè)試驗(yàn)研究了高低飼料能量水平對(duì)生長(zhǎng)前期北京鴨賴氨酸需要量的影響。試驗(yàn)一采用3x6雙因子試驗(yàn)設(shè)計(jì),旨在探究不同能量水平和賴氨酸水平對(duì)1-21日齡北京鴨生長(zhǎng)性能和胴體品質(zhì)的影響。試驗(yàn)二采用2x6雙因子試驗(yàn)設(shè)計(jì),旨在研究不同能量水平對(duì)1-21日齡北京鴨賴氨酸需要量的影響。試驗(yàn)一:不同能量水平和賴氨酸水平對(duì)1-21日齡北京鴨生長(zhǎng)性能和胴體品質(zhì)的影響本試驗(yàn)采用3x6雙因子試驗(yàn)設(shè)計(jì),分為3個(gè)能量水平(11.3,11.9和12.5 MJ/kg)和6個(gè)總賴氨酸水平(0.595,0.715,0.835,0.955,1.075和1.195%),探究不同能量水平和賴氨酸水平對(duì)1-21日齡北京鴨生長(zhǎng)性能和胴體品質(zhì)的影響。選取1296只1日齡健康的雄性北京鴨隨機(jī)分為18個(gè)處理組,每個(gè)處理6個(gè)重復(fù)欄,每個(gè)重復(fù)欄12只鴨。試驗(yàn)結(jié)果表明,飼料中不同賴氨酸水平能顯著影響日增重、采食量、料肉比(P0.001)、胸肌率、腿肌率和腹脂率。而不同能量水平顯著影響日增重和采食量,但對(duì)料肉比無顯著影響。同時(shí),飼料中不同能量水平能顯著影響腿肌率,但對(duì)胸肌率和腹脂率無顯著影響。能量和賴氨酸的互作顯著影響日增重(P0.05)。依據(jù)二次曲線模型,達(dá)到最佳1增重,能量水平為11.3,11.9和12.5 MJ/kg時(shí),1-21日齡北京鴨的賴氨酸需要量分別為0.99、1.11和1.00%。試驗(yàn)二:不同能量水平對(duì)1-21日齡北京鴨賴氨酸需要量的影響本試驗(yàn)采用2x6雙因子試驗(yàn)設(shè)計(jì),依據(jù)每個(gè)處理每個(gè)重復(fù)鴨只試驗(yàn)初始體重基本一致的原則,將576只1日齡健康雄性北京鴨隨機(jī)分成12個(gè)處理,每個(gè)處理6個(gè)重復(fù),每個(gè)重復(fù)8只鴨。飼料不同賴氨酸水平顯著影響日增重、采食量、料肉比(P0.01)和胸肌率。相比之下,飼料不同能量水平對(duì)采食量有顯著影響,但對(duì)日增重和料肉比影響不顯著。同時(shí),飼料能量水平能顯著影響腿肌率和腹脂率,但對(duì)胸肌率無顯著影響。飼料能量和蛋氨酸的互作效應(yīng)對(duì)生長(zhǎng)前期北京鴨日增重有顯著影響(P0.05)。依據(jù)折線模型進(jìn)行回歸分析,以體增重、胸肌率和采食量為評(píng)價(jià)指標(biāo),飼料能量水平為11.5 MJ ME/kg時(shí)的賴氨酸需要量分別為0.98、0.98和1.01%,飼料能量水平為12.7 MJ ME/kg的賴氨酸需要量分別為0.98、0.80和1.10%。
[Abstract]:In this paper, the effects of high and low feed energy levels on lysine requirement of Beijing duck were studied by two experiments. In the first experiment, 3x6 double-factor design was used to investigate the effects of different energy levels and lysine levels on growth performance and carcass quality of Beijing ducks at 1-21 days of age. The second experiment was designed to study the effects of different energy levels on lysine requirements of Beijing ducks at 1 to 21 days of age. Experiment 1: effects of different energy levels and lysine levels on growth performance and carcass quality of Beijing Ducks at 1-21 days of age this experiment was designed with 3x6 double factor test. There were three energy levels (11.9 and 12.5 MJ/kg) and six total lysine levels (0.595U 0.715 0. 835 C 0. 955 1. 075 and 1. 195%). To explore the effects of different energy levels and lysine levels on growth performance and carcass quality of 1-21 day old Peking duck. 1296 male Beijing ducks of one day old were randomly divided into 18 treatment groups, each treated with 6 repeats and 12 ducks per repeater. The results showed that dietary lysine levels significantly affected ADG, feed intake, feed / meat ratio (P0.001), breast muscle rate, leg muscle rate and abdominal fat rate. However, different energy levels significantly affected daily gain and feed intake, but had no significant effect on feed / meat ratio. At the same time, different energy levels in the diet could significantly affect the leg muscle rate, but had no significant effect on the pectoral muscle rate and abdominal fat rate. The interaction of energy and lysine significantly affected daily gain (P0.05). According to the conic model, when the optimum weight gain was 1, and the energy levels were 11.311.9 and 12.5 MJ/kg, the lysine requirements of 1-21 day-old Beijing ducks were 0.99U 1.11 and 1.00g, respectively. Experiment 2: effects of different Energy levels on Lysine requirement of Beijing Ducks at 1-21 days of age. The experiment was designed with 2x6 double factor test, according to the principle that the initial weight of each repeated duck was basically the same. 576 1-day-old male Beijing ducks were randomly divided into 12 treatments with 6 replicates per treatment and 8 ducks per replica. Dietary lysine levels significantly affected daily gain, feed intake, feed to meat ratio (P0.01) and breast muscle rate. In contrast, different levels of feed energy had a significant effect on feed intake, but had no significant effect on daily gain and feed / meat ratio. At the same time, feed energy level could significantly affect the rate of leg muscle and abdominal fat, but had no significant effect on the rate of pectoralis muscle. The interaction between feed energy and methionine had a significant effect on the daily gain of Beijing duck in the early stage of growth (P0.05). According to the regression analysis of broken line model, body weight gain, breast muscle rate and feed intake were taken as the evaluation indexes, and the lysine requirements were 0.980.98 and 1.01g when feed energy level was 11.5 MJ ME/kg, respectively. The lysine requirements of feed energy level of 12.7 MJ ME/kg were 0.98g 0.80 and 1.10g, respectively.
【學(xué)位授予單位】：中國(guó)農(nóng)業(yè)科學(xué)院
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2016
【分類號(hào)】：S834.5

【參考文獻(xiàn)】

相關(guān)期刊論文 前2條

1 ;Lysine, Methionine and Tryptophan Requirements of Beijing Ducklings of 0-2 Weeks of Age[J];Agricultural Sciences in China;2006年03期

2 羅清堯,高振川;北京肉仔鴨蛋氨酸和賴氨酸需要量研究[J];動(dòng)物營(yíng)養(yǎng)學(xué)報(bào);2002年03期

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本文編號(hào)：2326504