Effect Of Dietary Supplementation With Lactobacillus On Performance, Blood Biochemical Indexes And Feed Intake In Sows During Gestation And Lactation

This study was conducted to determine the effects of dietary supplementation of Lactobacillus on performance, feed intake and blood biochemical indexes of sows during late gestation and lactation. According to the parities and body condition scores, twelve sows (landrace×large white) ranging in parity from 1 to 2 were randomly allotted to 2 dietary treatments supplemented with 0(control),109 CFU/kg LA. The experiment started at day 60 gestation and ran until day after weanling for 82 days. Blood samples were collected on day 0?14 of lactation?day 60?90 of gestation. The colostrum and milk samples were obtained on day 0 (farrowing) and day 14 of lactation, respectively. Base on the above samples, reproductive performance, milk composition, sow plasma biochemical, sow immunoglobulin levels and appetite hormones were determined. The main results were as follows:1. Reproductive performance:Throughout the experiment, the feed intake of lactation was significantly reduced in sows fed Lactobacillus relative to sows in control group (P<0.05). Supplementing Lactobacillus increased backfat thickness loss (P<0.05). There were no significant differences in sow and litter performance among treatments (P>0.05), such as average birth weight, litter size, litter weight at birth and weaning and weight gain of the piglets.2. Milk composition:On the day 0 (farrowing) and day 14 of lactation, the milk fat> protein?lactose and Non-fat milk solids of colostrum and milk was no significantly among treatments (P>0.05).3. Sow plasma biochemical:On the day 0 (farrowing), the total glucose and low density lipoprotein cholesterol (LDL-C) concentration of plasma was significantly enhanced by adding Lactobacillus (P<0.05). Additionally, on the day 14 (farrowing) the total cholesterol (TC) concentration were significantly increased with Lactobacillus supplemented diets (P<0.05). There were no significant differences in plasma urea nitrogen (PUN),the triglyceride (TG) and high density lipoprotein cholesterol (HDL-C) among treatments (P>0.05).4. Immunoglobulin levels:On the day 14 of lactation, the concentration of Immunoglobulin G (P<0.05) in milk were significantly increased in piglets fed Lactobacillus diet compared with sows in control group. There were no significant differences in IgA, IgG and IgM both day 0 and 14 at farrowing among treatments (P>0.05).5.Appetite hormone levels:On the day 14 (farrowing), the total insulin concentration of plasma was significantly enhanced by adding Lactobacillus (P<0.05). Additionally, on the day 90 (gastation) the total peptide Y (PYY) concentration were significantly increased with Lactobacillus supplemented diets (P<0.05). There were no significant differences in leptin,GLP-l and PYY both day 60 (gastation) and 14 at farrowing among treatments (P>0.05).Conclusion1. Dietary supplementation of Lactobacillus during gestation and lactation increased the concentration of IgG in plasma of piglets, improved humoral immune function.2. Dietary supplementation of Lactobacillus during gestation and lactation increased the endocrine hormone of sows, reduced appetite.