Effects Of Force-feedinu Prophase Added Fermentation Agent On The Finishing Ability, Anti-oxidant And Fatty Liver Production Of Landes Geese

The aim of this experiment was to investigate the effect of solid fermentation agent on thegrowth performance and producing liver performance of Landes Geese. One hundered and twentyseventy healthy and similar body weight with seventy day-old Landes male geese were selectedand randomly divided into3groups with5replicates of8geese in each group. Control group wasfed corn-soybean based diet, with added35%water to mix. Treatment groups were fed the basaldiet added1‰fermentation agent and35%water to ferment with seal.Treatment group Ifermented24hours. Treatment II fermented48hours. Selecting1goose of each replicate toslaughter after formal feeding two weeks.The surplus goose force-feed to produce fatty liver. Theresults were as follows：Experiment one: Effect of the force-feeding prophase added fermentation agent on finishingability, serum biochemical indexes and fatty liver performance of Landes geese. The resultsshowed that: Force-feeding prophase added fermentation agent for Landes geese had nosignificant effects on daily weight gain, feed conversation rate（P>0.05）, but there wereincreasing daily weight gain and reducing feed conversation rate trend. Fermenting24Hsignificantly increased feed intake（P <0.05）. The ratio of liver weight to carcass weight offermenting48H was significantly higher than fermenting24H and the control group（P <0.05）.The content of TC, AST and HDL-C of fermenting48H was significantly higher than the controlgroup and fermenting24H（P <0.01）. Villus height and crypt depth of caecum and both of theration were lower than the control group and presented depressing trend following with thefermenting time. Villus height and the ratio of villus height and crypt depth of duodenum ofcontrol group were significantly lower than the fermenting group and presented increasing trendfollowing with the fermenting time. After force-feeding, the ratio of fatty liver weight to carcassweight of the ferment groups was higher than the control group. The results were obtained asfollows:(1)Solid fermentation agent added in the diet could improve feed intake of Landes Geeseand reduce feed/gain rate.(2)Added solid fermentation agent could improve the growth anddevelopment of intestinal villus and promote the digestion and absorption of nutrients.(3)Addedsolid fermentation agent could improve the immune function and increase the antiviral ability of Landes Geese.(4) Solid fermentation agent added in the force-feeding diet could significantlyimprove fatty liver weight and liver/carcass weight. The longer the fermenting time, the moresignificant the effect.Experiment two: Effect of solid fermentation agent on heart, liver and pectoral muscleoxidative stress of Landes geese. Fermenting24H significantly increased the content of GSH-PXactivity of heart. The fermentation agent could reduce the content of MDA of heart, and thelonger the fermenting time, the stronger the anti-oxidation. The fermentation agent could increasethe content of Na+, K+-ATP, Mg2+-ATP enzyme activity of heart, and reduce the content of MDAof liver. The fermentation agent could increase the content of Mg2+-ATP enzyme activity of liver.Fermenting24H could significantly increase MDA content and SOD activity of breast muscletissue. But fermenting48H could significantly reduce MDA content and SOD activity of breastmuscle tissue. Therefore, fermenting24H could significantly increase the content of GSH-PXactivity of heart. The fermentation agent could reduce the content of MDA of heart and liver, andincrease the anti-oxidation trend along with the fermentation time. The fermentation agent couldincrease the Na+, K+-ATP and Mg2+-ATP enzyme activity of heart.