Research Center for Healthy Breeding of Livestock and Poultry, Hunan Engineering and Research Center of Animal and Poultry Science and Key Laboratory for Agro-ecological Processes in Subtropical Region, Chinese Academy of Sciences, Hunan, China.
J Sci Food Agric. 2011 Oct;91(13):2371-7. doi: 10.1002/jsfa.4469. Epub 2011 Jul 18.
The present research was conducted to investigate the influences of supplementation with different levels of folic acids in diet on the performance of lactating sows. Twenty Landrace × Yorkshire sows received the same basal corn-soybean diets (folic acid, 1.3 mg kg(-1)) from gestation to parturition (day 107). After parturition, sows were allotted to four treatments: control group (folic acid supplementation level, 0 mg kg(-1)), group 1 (12.5 mg kg(-1)), group 2 (50 mg kg(-1)) and group 3 (100 mg kg(-1)), with five replicates of one sow. The experiment lasted for 21 days.
(1) Folic acid increased milk production (P > 0.05). (2) Compared with the control, supplementation with folic acid (100 mg kg(-1)) increased the concentration of butter fat, total substance and non-lipoid substance significantly (P < 0.01), the concentration of milk protein was also significantly increased in group 2 and group 3 (P < 0.01) in milk. (3) Folic acid supplementation could increase litter weaning weight, average piglet weaning weight and average piglet daily gain (P > 0.05).
These results suggested that supplementation with folic acid in the diets of lactating sows increases milk production, improved milk quality and the performance of piglets.
本研究旨在探讨日粮中不同水平叶酸补充对泌乳母猪生产性能的影响。20 头长白×大约克母猪从妊娠到分娩（第 107 天）接受相同的基础玉米-豆粕日粮（叶酸 1.3mg/kg）。分娩后，母猪被分为四个处理组：对照组（叶酸补充水平 0mg/kg）、组 1（12.5mg/kg）、组 2（50mg/kg）和组 3（100mg/kg），每组 5 个重复，每个重复一头母猪。试验持续 21 天。
（1）叶酸增加了产奶量（P＞0.05）。（2）与对照组相比，叶酸（100mg/kg）补充显著增加了乳脂、总物质和非脂物质的浓度（P＜0.01），组 2 和组 3 的乳蛋白浓度也显著增加（P＜0.01）。（3）叶酸补充可增加窝断奶体重、平均仔猪断奶体重和平均仔猪日增重（P＞0.05）。
这些结果表明，日粮中添加叶酸可增加泌乳母猪的产奶量，改善乳品质和仔猪的生产性能。
