Effects of Different Particle Sizes of α-Glycerol Monolaurate on Growth Performance, Nutrient Apparent Digestibility and Serum Antioxidant and Inflammatory Indexes of Weaned Piglets

  • LI Longxian ,
  • WANG Huakai ,
  • ZHANG Nan ,
  • ZHANG Tuan ,
  • MA Yongxi
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  • State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China

Received date: 2021-09-23

  Online published: 2022-04-14

Abstract

This experiment was conducted to investigate the effects of different particle sizes of α-glycerol monolaurate (GML) on growth performance, diarrhea rate, nutrient apparent digestibility, serum antioxidant and inflammatory indexes and fecal volatile fatty acid contents of weaned piglets. A total of 240 healthy 28-day-old Duroc×Landrace×Yorkshire weaned piglets with body weight of (8.34±0.05) kg were randomly divided into 5 groups with 6 replicates per group and 8 piglets per replicate. The control group was fed a basal diet, and the trial groups were fed the basal diet supplemented with 1 000 mg/kg α-GML with the average particle size of 150, 212, 550 and 1 000 μm, respectively. The experiment lasted for 28 days. The results showed as follows:1) diet supplemented with different particle sizes of α-GML had no significant effects on the average daily gain, average daily feed intake and feed/gain of weaned piglets (P>0.05); compared with the control group, α-GML supplementation with the average particle size of 150, 212 or 1 000 μm significantly reduced the diarrhea rate of piglets from day 15 to 28 and from day 1 to 28 (P<0.05). 2) The apparent digestibility of dry matter, ether extract and gross energy in all trial groups was significantly higher than that in the control group (P<0.05); compared with the control group, α-GML supplementation with the average particle size of 150, 212 or 550 μm significantly increased the organic matter apparent digestibility of weaned piglets (P<0.05); α-GML supplementation with the average particle size of 150, 212 or 1 000 μm significantly increased the acid detergent fiber apparent digestibility of weaned piglets (P<0.05). 3) Compared with the control group, α-GML supplementation with the average particle size of 150, 550 or 1 000 μm significantly decreased the serum malondialdehyde content of weaned piglets (P<0.05); serum superoxide dismutase and glutathione reductase activities in 212 μm α-GML supplemental group were increased by 12.17% and 28.47%, respectively, but the difference was not significant compared with the control group (P>0.05). 4) Diet supplemented with different particle sizes of α-GML had no significant effects on the contents of volatile fatty acids in feces of weaned piglets (P>0.05). In conclusion, adding 1 000 mg/kg α-GML in weaned piglet diet can reduce the diarrhea rate, improve the nutrient apparent digestibility and body antioxidant capacity, and the optimal α-GML average particle size is 212 μm.

Cite this article

LI Longxian , WANG Huakai , ZHANG Nan , ZHANG Tuan , MA Yongxi . Effects of Different Particle Sizes of α-Glycerol Monolaurate on Growth Performance, Nutrient Apparent Digestibility and Serum Antioxidant and Inflammatory Indexes of Weaned Piglets[J]. Chinese Journal of Animal Nutrition, 2022 , 34(4) : 2249 -2259 . DOI: 10.3969/j.issn.1006-267x.2022.04.021

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