6Laustad-Aas AH, Hofmo PO, Karlberg K. The importance of farrowing to service interval in sows served during lactationor after shorter lactation than 28 days[J].Animal Reproduction Science, 2004, (81):287-293. 被引量:1
7Motaa Daniel,Alonso-Spilsbury Mara, Mayagoitiab Lilian, et al. Lactational estrus induction in Mexican hairless sow[J].Animal Reproduction Science,2002,72(1-2):115-124. 被引量:1
8Lindemann MD. Effect of age, weaning and diet of digestive enzyme level in the piglet[J].Animal Science,1986, (62):1928-1207. 被引量:1
9Jensen MS. Development of digestive enzymes in pigs with emphasis on lipolytic actlvityin the stomach and pancreas[J].Animal Science, 1997,(75):437-445. 被引量:1
10Thacker PA. Nutritional requirement of early weanedpig[J].Pig Sewsnform, 1999, (20):13-24. 被引量:1