Short Communications

Effect of Lactobacillus delbrueckii on Growth Performance, Nutrient Digestibility, Serum Biochemical Indexes and Intestinal Structure of Fattening Pigs

  • HOU Gaifeng ,
  • LI Rui ,
  • LIU Ming ,
  • WANG Houjun ,
  • PENG Wei ,
  • HUANG Xingguo
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  • 1. College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, China;
    2. College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, China

Received date: 2015-03-20

  Online published: 2015-09-12

Abstract

The study aimed at investigating the effects of Lactobacillus delbrueckii on growth performance, nutrient digestibility, serum biochemical indexes and intestinal structure of fattening pigs. A total of 120 healthy fattening pigs were randomly divided into 2 groups according to their body weight, and 6 replicates (pens) per group with 10 pigs (half male and half female) per replicate. The control group was fed basal diet (without antibiotic), while the experimental group was fed basal diet containing 0.1% Lactobacillus delbrueckii, and the diets were fed for 42 d. The fresh fecal samples of each pen were collected in the period from the day 12 to day 14 (earlier stage), day 26 to day 28 (middle stage) and day 40 to day 42 (later stage), respectively, and then collect anterior vena cava blood on the day 42, since the trial ended, one barrow with the similar body weight in each pen was slaughtered. The results were as follows: 1) the experimental group had a greater growth performance than the control group, but there was no significant difference (P>0.05). 2) Compared with the control group, during earlier and middle stages, the digestibility of crude protein (CP), extract ether (EE) and crude fiber (CF) were improved significantly (P0.05). In later stage, except for the digestibility of ash was significantly increased (P0.05). 3) The experimental group had higher content of serum urea and activities of alanine aminotransferase (ALT), alkaline phosphatase (ALP) and aspartate aminotransferase (AST), but there was no significant difference (P>0.05). 4) Compared with control group, the mucosal thickness of duodenum, jejunum and ileum was improved, but there was no significant difference (P>0.05), the crypt depth of duodenum was decreased significantly (P<0.05), the villous height of jejunum was increased extremely significantly (P<0.01), the villous height/crypt depth (V/C) of duodenum, jejunum and ileum was improved significantly or extremely significantly (P<0.05 or P<0.01). It is concluded that adding 0.1% Lactobacillus delbrueckii into antibiotic-free diet can ameliorate intestinal structure, promote the digestion, absorption and metabolism of nutrients, and improve growth performance of fattening pigs.

Cite this article

HOU Gaifeng , LI Rui , LIU Ming , WANG Houjun , PENG Wei , HUANG Xingguo . Effect of Lactobacillus delbrueckii on Growth Performance, Nutrient Digestibility, Serum Biochemical Indexes and Intestinal Structure of Fattening Pigs[J]. Chinese Journal of Animal Nutrition, 2015 , 27(9) : 2871 -2877 . DOI: 10.3969/j.issn.1006-267x.2015.09.026

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