【作者】 程红娜；

【导师】 梁明振； 谢梅冬；

【作者基本信息】 广西大学 ， 动物营养与饲料科学， 2005， 硕士

【摘要】 本试验分两阶段进行,试验采用四因素三水平正交设计,研究饲粮不同能量(代谢能ME)、粗蛋白质(CP)、钙(Ca)和磷(P)水平对广西合浦鹅育雏期(1～28日龄)和育成期(29～56日龄)生长性能、饲料转化率、血液生化指标、胫骨成分和胴体品质的影响。以确定合浦鹅饲粮中能量、粗蛋白质、钙、磷的适宜水平。 试验阶段1,选1日龄合浦鹅270羽,随机分为9组,每组设3个重复,每个重复10羽,分别饲喂9种试验饲粮,试验期为28d,以饲粮能量(ME)、粗蛋白质(CP)、钙(Ca)和磷(P)为试验因子。能量水平分别为10.50 MJ/Kg、11.30 MJ/Kg、12.10 MJ/Kg;粗蛋白质水平为16%、18%、20%;钙水平分别为0.8%、0.9%、1.0%;磷水平分别为0.3%、0.4%、0.5%。目的是研究饲粮不同能量、粗蛋白质、钙和磷水平对1～28日龄合浦鹅生产性能及相关参数的影响,以便确定合浦鹅育雏期饲粮中该4种养分的适宜含量。 试验结果表明,(1)随着饲粮能量水平的提高,料重比显著降低(P<0.05),能量利用率和屠宰率显著升高(P<0.05),血清尿酸浓度以饲粮高能量水平时最低(P<0.05);饲粮能量水平为中等能量水平时,鹅对粗蛋白质利用率和钙利用率最高(P<0.01)。(2)随饲粮粗蛋白质水平提高,鹅对磷利用率升高(P<0.05),但18%粗蛋白质组与20%粗蛋白质组无显著差异(P>0.05);血清磷浓度降低(P<0.05),18%粗蛋白质组与16%和20%组无显著差异(P>0.05);粗蛋白质利用率以18%饲粮粗蛋白质水平最高(P<0.01),与20%粗蛋白质无显著差异(P>0.05)。(3)随着饲粮钙水平的提高,粗蛋白质利用率、钙利用率和磷利用率均升高(P<0.01),但胫骨磷沉积率降低(P<0.01)。(4)随着饲粮磷水平的提高,粗蛋白质利用率、钙利用率、磷利用率均升高(P<0.01)。 综合比较各项指标,在本试验条件下,1～28日龄合浦鹅饲粮中更多还原

【Abstract】 Two phase experiments were conducted to study the effects of dietary energy(ME) and crude protein(CP) and calcium(Ca) and phosphorus(P) on growth performance , feed conversion rate , blood biochemical parameters , tibiae composition and carcass quality of green goose(l~28days of age) and gosling(29~56 days of age). The orthogonal 4*3 factorial trial was used and 9 kind of diets were designed to determine the requirements of dietary metabolizable energy and crude protein and calcium and phosphorus of Hepu goose.During experiment phase one, the effects of dietary energy and crude protein and calcium and phosphorus level on growth performance , feed conversion rate , blood biochemical parameters , tibiae composition and carcass quality in green goose were studied. 270 one-day-old Hepu goose were allotted to 9 dietary treatments. Each group of 30 geese has 3 replicates.The orthogonal 4*3 factorial trial involves dietary metabolizable energy (ME),crude protein(CP),calcium(Ca) and phosphorus at three level to study their effects on green Hepu geese. The dietary metabolizable energy(ME) were 10.50 MJ/Kg 11.30 MJ/Kg 12.10 MJ/Kg; the crude protein levels were 16% 18% 20%; the calcium levels were 0.8% 0.9% 1.0%; the phosphorus levels were 0.3% 0.4% 0.5%.The aim was to study the effect of dietary different metabolizable energy , crude protein , calcium and phosphorus levels on growth performance and relative parameters, also to determinate appropriate levels of the four nutrients in green goose.The results of this experiment of 1~28 days of age Hepu goose showed: (1) With increasing of dietary ME level, ratio of feed intake to weight gain decreased significantly (P<0.05) and the efficiency of energy and carcass ratio increased significantly (P<0.05) . The lowest uric acid concentration in serum was in high energy treatment (P<0.05) , but the highest efficiency of crude protein and calcium was in medium energy treatment (P<0.01) . (2) With increasing of crude protein levels , the efficiency of phosphorus increased significantly (P<0.05) , but no significant difference between 18% crude protein treatment and 20% crude protein treatment (P>0.05); phosphorus concentration in serum decreased significantly (P<0.05), but 18% crude protein treatment had no significant difference compared with 18% crude protein treatment and 20% crude protein treatment (P>0.05); the efficiency of crude protein in 18% crude protein treatment was the highest. (3) Dietary calcium levels had significant effects (P<0.01) on the efficiency of crude protein and the efficiency of calcium and the efficiency of phosphorus and the content of phosphorus in tibiae; when dietary calcium levels were increasing , the content of phosphorus in tibiae and the efficiency of crude protein , the efficiency of calcium , the efficiency of phosphorus increased respectively ( P<0.01). (4) When dietary phosphorus levels were increasing , the efficiency of crude protein and the efficiency of calcium and the efficiency of phosphorus increased significantly (P<0.01).Comparing all quotas, in the condition of this experiment, thebest nutritive level in green Hepu geese diet can be: metabolizable energy 12.10 MJ/Kg , crude protein 18%, calcium 1.0%, phosphorus 0.5% respectively.During experiment phase two , the effects of dietary energy and crude protein and calcium and phosphorus level on growth performance , feed conversion , blood biochemical parameters , tibiae nutrition content and carcass quality in gosling were studied. 216 28-day-old Hepu goose were allotted to 9 dietary treatments. Each group of 24 geese has 3 replicates.The orthogonal 4*3 factorial trial involves dietary metabolizable energy (ME) , crude protein(CP) , calcium(Ca) and phosphorus (P) at three level to study their effects on Hepu gosling. The dietary metabolizable energy(ME) were 10.80 MJ/Kg 11.60 MJ/Kg 12.40 MJ/Kg; the crude protein levels were 13% , 15% 17%; the calcium leveis were 0.7%, 0.8% 0.9%; the phosphorus levels were 0.3%, 0.4%, 0.5% ? The aim was to study the effect of dietary different m更多还原