Schubert R, Jeroch H, Hennig A
Arch Tierernahr. 1977 Dec;27(12):721-30. doi: 10.1080/17450397709426776.
In 5 trials using a total of 5367 geese (Deutsche Legagans male X White Italian Goose female), the influence of varying energy and crude protein levels in the feed on fattening performance was studied. After a uniform 4-week starter period (1st to 28th days of life) rations with conventional components were fed, their energy and crude protein levels ranging from 500 to 620 energetic feed equivalents (poultry) and 140 to 180 g CP, respectively. Subsequently, a test under commercial conditions was made to compare the optimal variant found (530 energetic feed equivalents-poultry/175 g CP) with a high-energy feed (620 energetic feed equivalents/175 g CP). As the energy concentration of the feed increased the live weight was not found to rise but slightly. At all energy levels under study, increasing crude protein from 140 to 180 g/5g resulted in higher gains. Feed expenditure was found to decrease as the energy concentration of the rations went up. High energy expenditure did not produce but slightly higher weight gains. Fattening beyond 56 days resulted in considerably higher energy expenditure.
在总共使用5367只鹅（德国莱加甘斯公鹅×意大利白鹅母鹅）的5项试验中，研究了饲料中不同能量和粗蛋白水平对育肥性能的影响。在统一的4周起始期（出生第1天至第28天），投喂含有常规成分的日粮，其能量和粗蛋白水平分别为500至620能量饲料当量（家禽）和140至180克粗蛋白。随后，在商业条件下进行试验，将找到的最佳配方（530能量饲料当量-家禽/175克粗蛋白）与高能饲料（620能量饲料当量/175克粗蛋白）进行比较。随着饲料能量浓度的增加，未发现活重上升，而是略有上升。在所有研究的能量水平下，将粗蛋白从140克/5克增加到180克/5克会导致更高的增重。发现随着日粮能量浓度的提高，饲料消耗量会减少。高能量消耗并未带来显著更高的体重增加。超过56天的育肥导致能量消耗大幅增加。
