ACTA VETERINARIA ET ZOOTECHNICA SINICA ›› 2017, Vol. 48 ›› Issue (2): 280-288.doi: 10.11843/j.issn.0366-6964.2017.02.011

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Effects of Basal Diet Type on the Determination of Soybean Meal True Ileal Digestibility of Amino Acids for Growing Pigs

LIU Zheng-qun1,LIU Jing-bo1,2,CHEN Liang1,ZHU Li-yuan1,MENG Qing-shi1,ZHANG Hong-fu1*   

  1. （1. State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China; 2. School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China)
  • Received:2016-05-18 Online:2017-02-23 Published:2017-02-23

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Abstract:

The present study was conducted to investigate the effects of basal diet type on the determination of true ileal digestibility (TID) of nitrogen (N) and amino acids (AA) for growing pigs by the linear regression method and the difference method. A total of 32 barrows (initial BW, (28.9±0.7) kg) fitted with T-cannula were used in an 8 × 2 incomplete Latin square design including 8 diets and 2 digestibility tests. The 8 experimental diets consisted of 2 types of basal diet (cornstarch or corn), and 4 graded levels of soybean meals (0, 13%, 26% or 39%). Each test consisted of a 5-d adjustment period and a 2-d ileal digesta collection period. The results showed that the ileal outputs of N and the most of AA, except for Lys, Arg and Pro, were greater in pigs fed the corn basal diets than those fed the cornstarch basal diets (P<0.01). And for growing pigs, ileal outputs of N and the most of AA, except for Pro, increased linearly as soybean meal levels increased in diets (P<0.01). The result obtained from the difference method showed that, pigs fed the corn basal diets had greater TID of N and Gly compared with the pigs fed the cornstarch basal diets, whereas the TID of Met and Lys was lower for pigs fed the corn basal diets than the cornstarch basal diets (P<0.05). In addition, TID of other AA was not effected by basal diet types (P>0.05). Values of TID of the most of AA for growing pigs determined by the regression method were not affected by the basal diets types (P>0.05). In summary, the determination of TID of N and AA for growing pigs was not affected by the basal diet types.

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