Tummaruk Padet, Sumransap Peerapong, Jiebna Nithitad
Department of Obstetrics, Gynaecology and Reproduction, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, 10330, Thailand,
Trop Anim Health Prod. 2014 Jun;46(5):753-8. doi: 10.1007/s11250-014-0559-8. Epub 2014 Feb 27.
This study investigates the effects of microencapsulated fat (FAT) and whey protein (WHEY) supplementation on the milk composition, backfat loss, and reproductive performance in lactating sows. A total of 144 sows were divided according to their backfat thickness at farrowing into three groups, i.e., low (12.0-16.5 mm, n = 33), moderate (17.0-21.5 mm, n = 78), and high (22.0-24.5 mm, n = 33). The lactation diet was divided into three types, i.e., a control diet (CONTROL, n = 50), a diet supplemented with FAT (n = 48), and a diet supplemented with WHEY (n = 50). Pooled milk samples were collected at the second and third week of lactation. On average, the sows lost backfat 23.5 % during lactation. The backfat loss during lactation was 24.5, 22.7, and 22.8 % in sows fed with CONTROL, FAT, and WHEY diets, respectively (P > 0.05). Supplementation of FAT increased the percentage of fat in the sow's milk compared to the CONTROL (9.1 and 8.4 %, P = 0.022). For sows with low backfat, FAT and WHEY supplementation increased the average daily gain of piglets compared to the CONTROL (244, 236, and 205 g/days, respectively, P < 0.05). For sows with high backfat, the sows receiving the CONTROL diet had a higher total piglet mortality than those that received FAT or WHEY (28.1, 14.1, and 13.0 %, respectively, P < 0.05). It could be concluded that supplementation of FAT in the diet of sow during lactation significantly enhanced the fat content in the sow's milk, improved the piglet's daily weight gain, and reduced piglet mortality.
本研究调查了微囊化脂肪（FAT）和乳清蛋白（WHEY）添加物对泌乳母猪乳汁成分、背膘损失及繁殖性能的影响。总共144头母猪根据分娩时的背膘厚度分为三组，即低背膘组（12.0 - 16.5毫米，n = 33）、中背膘组（17.0 - 21.5毫米，n = 78）和高背膘组（22.0 - 24.5毫米，n = 33）。泌乳日粮分为三种类型，即对照日粮（CONTROL，n = 50）、添加FAT的日粮（n = 48）和添加WHEY的日粮（n = 50）。在泌乳的第二周和第三周采集混合乳样。平均而言，母猪在泌乳期间背膘损失23.5%。饲喂对照、FAT和WHEY日粮的母猪在泌乳期间的背膘损失分别为24.5%、22.7%和22.8%（P > 0.05）。与对照相比，添加FAT提高了母猪乳汁中的脂肪百分比（分别为9.1%和8.4%，P = 0.022）。对于低背膘母猪，与对照相比，添加FAT和WHEY提高了仔猪的平均日增重（分别为244、236和205克/天，P < 0.05）。对于高背膘母猪，接受对照日粮的母猪仔猪总死亡率高于接受FAT或WHEY的母猪（分别为28.1%、14.1%和13.0%，P < 0.05）。可以得出结论，泌乳期母猪日粮中添加FAT可显著提高母猪乳汁中的脂肪含量，改善仔猪的日增重，并降低仔猪死亡率。
