Kijora C, Bergner H, Kupsch R D, Hagemann L
Fachgebiet Tierernährung, Humboldt-Universität zu Berlin, Germany.
Arch Tierernahr. 1995;47(4):345-60. doi: 10.1080/17450399509381818.
The production of motor fuel from rapeseed oil forms large amounts of glycerol as a waste product (about 100 g per kg oil). The aim of this experiment was to test glycerol as a component in diets of fattening pigs. In two experiments received 48 pigs (Pietrain x F1, Landrace x German breed) up to 30% glycerol in barley-soya bean oil meal diets. Six pigs per group with an initial weight of 32 kg (experiment 1) and 31.2 kg (experiment 2) in average received the diets semi ad libitum during the whole fattening periods. Barley was replaced by glycerol, that the content of glycerol in diets amounted 5 and 10% (1st exp.) and 5; 10; 20 and 30% in the 2nd exp. respectively. The feed intake was in order of groups up to slaughtering in exp. 1: 1.98; 2.17 and 2.23 kg DM/animal and day and in exp. 2 over 71 days: 2.26; 2.44; 2.54; 2.32 and 2.37 kg DM/animal and day. The sweet taste and the better feed structure of diets with glycerol supplementation is the reason for the higher feed intake in the groups with a glycerol supplement. The daily live weight gain was in the same order 631; 719; 754; 731; 770; 819; 704 and 598 g/animal resp. The feed conversion ratio was only in the group with 30% glycerol significant different from all other groups (3.96 against 2.95-3.30 kg DM/kg live weight gain). 30 min. after feeding the glycerol concentration in blood rose evident with higher glycerol content in diets. It was also found a higher glycerol content in the urine in dependence on the glycerol concentration in the blood. Glycerol in diets changed not the carcass yield and the meat quality. Pathological changes of liver and kidney of animals were not found after glycerol feeding. Amounts of glycerol up to 10% in the diet are recommended.
用菜籽油生产发动机燃料会产生大量甘油作为废弃物（每千克油约产生100克甘油）。本实验的目的是测试甘油作为育肥猪日粮中的一种成分。在两项实验中，48头猪（皮特兰×F1、长白×德国品种）在大麦 - 豆粕日粮中摄入高达30%的甘油。每组6头猪，初始体重平均为32千克（实验1）和31.2千克（实验2），在整个育肥期自由采食日粮。用甘油替代大麦，使日粮中甘油含量分别达到5%和10%（实验1），以及5%、10%、20%和30%（实验2）。实验1中直至屠宰时各实验组的采食量依次为：每头动物每天1.98、2.17和2.23千克干物质；实验2中71天内各实验组的采食量依次为：每头动物每天2.26、2.44、2.54、2.32和2.37千克干物质。补充甘油的日粮具有甜味且饲料结构更佳，这是补充甘油组采食量较高的原因。日增重依次为每头动物每天631、719、754、731、770、819、704和598克。饲料转化率仅在甘油含量为30%的组与所有其他组有显著差异（3.96对比2.95 - 3.30千克干物质/千克体重增加）。喂食后30分钟，随着日粮中甘油含量增加，血液中甘油浓度明显上升。还发现尿液中甘油含量随血液中甘油浓度而增加。日粮中的甘油未改变胴体产量和肉质。喂食甘油后未发现动物肝脏和肾脏的病理变化。建议日粮中甘油含量最高为10%。
