本文選題：鵝　切入點(diǎn)：日糧水分　出處：《吉林農(nóng)業(yè)大學(xué)》2015年碩士論文

【摘要】：近年來(lái),有關(guān)鵝日糧的纖維來(lái)源及水平的相關(guān)研究報(bào)道很多,但是對(duì)于鵝日糧含水量與纖維構(gòu)成及其二者之間的關(guān)系的研究尚不充分。鵝日糧的合理搭配,選擇適宜的日糧纖維來(lái)源,可提高鵝的生產(chǎn)性能。因此,本試驗(yàn)以苜蓿、玉米青貯以及白菜為纖維源,研究了日糧含水量及纖維構(gòu)成對(duì)鵝的營(yíng)養(yǎng)物質(zhì)利用的影響,將為合理搭配鵝日糧提供理論依據(jù)和參考。試驗(yàn)一:日糧含水量對(duì)鵝營(yíng)養(yǎng)物質(zhì)利用的影響實(shí)驗(yàn)結(jié)果表明,日糧能量表觀利用率測(cè)定結(jié)果,日糧含水量為14.67%組與50%、60%、70%組差異均極顯著(P0.01),日糧含水量50%組與日糧含水量為70%處理組差異顯著(P0.05)。各處理組間氮的表觀沉積率差異均不顯著(P㧐0.05)。日糧含水量60%組與日糧含水量50%組、70%組粗纖維消化、中性洗滌纖維率、酸性洗滌纖維消化率差異均極顯著(P0.01);日糧天然含水量處理組與含水量為50%組粗纖維消化率差異顯著(P0.05);日糧含水量70%組與天然含水量處理組及50%組粗纖維消化率差異均顯著(P0.05)。日糧天然水分處理組與日糧含水量50%組NDF消化率、酸性洗滌纖維消化率差異均極顯著(P0.01)。試驗(yàn)二:日糧纖維構(gòu)成對(duì)鵝營(yíng)養(yǎng)物質(zhì)利用的影響試驗(yàn)結(jié)果表明,能量表觀利用率的測(cè)定結(jié)果,苜蓿組與玉米青貯組及白菜組均極顯著(P㩳0.01);各處理組間氮的表觀沉積率差異均不顯著(P㧐0.05);白菜組與玉米青貯組及苜蓿組粗纖維消化率差異均極顯著(P㩳0.01),玉米青貯組與白菜組及苜蓿組的NDF消化率差異均極顯著(P㩳0.01)。酶解高消化纖維與粗纖維、中性洗滌纖維、酸性洗滌纖維消化率均呈極顯著正相關(guān)(P㩳0.01)。酶解高消化纖維含量與能量表觀利用率呈極顯著正相關(guān)(P㩳0.01)。酶解高消化纖維含量占中性洗滌纖維的比值與能量表觀利用率呈極顯著的正相關(guān)(P0.01),酶解高效化纖維含量占總纖維的比值與能量表觀利用率呈極顯著正相關(guān)(P0.01)。酶解木質(zhì)素的含量與粗纖維及酸性洗滌纖維消化率均呈顯著負(fù)相關(guān)(P㩳0.05)。酶解木質(zhì)素的含量與中性洗滌纖維消化率呈顯著負(fù)相關(guān)(P㩳0.05)。綜上所述:1.鵝日糧含水量影響營(yíng)養(yǎng)物質(zhì)的利用,當(dāng)日糧含水量60%時(shí)為最高。2.當(dāng)鵝日糧含水量為60%時(shí),日糧纖維構(gòu)成影響營(yíng)養(yǎng)物質(zhì)的利用效率,其中酶解高消化纖維含量與能量表觀利用率、纖維組分消化率均呈正相關(guān)。酶解高消化纖維與中性洗滌纖維、總纖維的比值與能量表觀消化率均呈正相關(guān)。
[Abstract]:In recent years, there have been a lot of reports on fiber sources and levels of goose diets, but the relationship between dietary water content and fiber composition and their relationship between dietary water content and fiber composition of geese has not been fully studied. Therefore, using alfalfa, corn silage and cabbage as fiber source, the effects of dietary water content and fiber composition on nutrient utilization of geese were studied. Experiment 1: effects of dietary water content on the utilization of nutrients in geese. The results showed that the apparent utilization rate of dietary energy was measured. The difference of dietary water content of 14.67% group and that of 50% group was extremely significant (P 0.01), and the difference between 50% group and 70% treatment group was significant (P 0.05). There was no significant difference in apparent nitrogen deposition rate between each treatment group. The digestibility of crude fiber and the percentage of neutral detergent fiber in 60% and 50% groups of dietary water content were determined. The difference of digestibility of acid detergent fiber was extremely significant (P 0.01), the digestibility of crude fiber between natural water treatment group and 50% water content group was significantly different (P 0.05), and the digestibility of crude fiber between 70% dietary water content group and natural water content treatment group and 50% water content treatment group was different from that of natural water content treatment group. The digestibility of NDF in the natural water treatment group and the 50% diet water content group was significantly higher than that in the control group. The effects of dietary fiber composition on nutrient utilization of geese showed that the apparent energy utilization rate of alfalfa, corn silage and cabbage were significantly higher than that of alfalfa and maize silage. There was no significant difference in the apparent deposition rate of nitrogen among the treatments. The digestibility of crude fiber in cabbage group, corn silage group and alfalfa group were significantly different. The NDF digestibility of maize silage group, cabbage group and alfalfa group were significantly different. The digestibility of enzyme hydrolyzed high digestible fiber, crude fiber, neutral detergent fiber and acid detergent fiber were significantly positive correlation (P < 0. 01). The content of digestible fiber in enzymatic hydrolysis was positively correlated with the apparent energy utilization ratio (P < 0.05). The ratio of enzymatic hydrolyzed high digestible fiber content to neutral washing fiber was positively correlated with the apparent energy utilization ratio (P 0.01), and the ratio of enzymatic high digestible fiber content to total fiber content was significantly positive correlation with the energy apparent utilization ratio (P 0.01), and the ratio of enzymatic high digestible fiber content to total fiber was significantly positive correlation with energy apparent utilization ratio (P 0.01). There was a significant negative correlation between lignin content and digestibility of crude fiber and acid detergent fiber. The content of enzymatic lignin was negatively correlated with the digestibility of neutral detergent fiber. The dietary water content of geese affects the utilization of nutrients, and the highest one is 60%. When the dietary water content of goose is 600.The fiber composition of the diet affects the utilization efficiency of nutrients. There was a positive correlation between the content of digestible fiber and the apparent utilization rate of energy, the digestibility of fiber component, the ratio of total fiber and the apparent digestibility of energy, and the ratio of digestible fiber to neutral detergent fiber.
【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)】：S835.5

【參考文獻(xiàn)】

相關(guān)期刊論文 前2條

1 王寶維;龍芳羽;張旭暉;王雷;楊志剛;王亞超;于世浩;魏笑笑;荊麗珍;;不同比例的羊草纖維素源對(duì)五龍鵝消化代謝的影響[J];家畜生態(tài)學(xué)報(bào);2008年02期

2 張吉濵;反芻動(dòng)物日糧纖維的研究進(jìn)展[J];飼料博覽;2003年10期

，

本文編號(hào)：1680752