Abnormal histopathology, fat percent and hepatic apolipoprotein A I and apolipoprotein B100 mRNA expression in fatty liver hemorrhagic syndrome and their improvement by soybean lecithin.

Abstract

To investigate the etiopathogenesis of fatty liver hemorrhagic syndrome (FLHS) and the protective effects of soybean lecithin against FLHS in laying hens, 135 healthy 300-day-old Hyline laying hens were randomly divided into groups: control (group 1), diseased (group 2), and protected (group 3). Each group contained 45 layers with 3 replicates. The birds in these 3 groups were fed a control diet, a high-energy/low-protein (HELP) diet or the HELP diet supplemented with 3% soybean lecithin instead of maize. The fat percent in the liver was calculated. Histopathological changes in the liver were determined by staining, and the mRNA expression levels of apolipoproteinA I (apoA I) and apolipoprotein B100 (apoB100) in the liver were determined by RT-PCR. The results showed that the fat percent in the liver of group 2 was much higher (P < 0.01) than that of group 1 and group 2 on d 30 and 60. The histology of the liver in group 2 on d 30 and 60 displayed various degrees of liver lesions, while the hepatocytes showed a normal structure in group 3 with mild microvesicular steatosis in the liver cell on d 30 and 60. The mRNA expression levels of apoA I and apoB100 in the livers were variable throughout the experiment. The expression level of apoA I in group 2 significantly decreased on d 60 (P < 0.05); the expression level of apoB100 slightly increased on d 30 in group 2, while it sharply decreased on d 60. Compared to group 1, the expression level of apoB100 showed no significant difference in group 3 (P < 0.05). This study indicated that FLHS induced pathological changes and abnormal expression of apoA I and apoB100 in the livers of laying hens and that soybean lecithin alleviated these abnormal changes.

• Authors: Yalu Song, Jiming Ruan, Junrong Luo, Tiancheng Wang, Fei Yang, Huabin Cao, Jianzhen Huang, Guoliang Hu
• Journal: Poultry science (Poult Sci) Vol. 96 Issue 10 Pg. 3559-3563 (Oct 01 2017) ISSN: 1525-3171 [Electronic] England
• PMID: 28938763 (Publication Type: Journal Article)
• Copyright: © 2017 Poultry Science Association Inc.

Chemical References

• Apolipoprotein A-I
• Apolipoprotein B-100
• Avian Proteins
• Lecithins

Topics

• Animal Feed (analysis)
• Animals
• Apolipoprotein A-I (genetics, metabolism)
• Apolipoprotein B-100 (genetics, metabolism)
• Avian Proteins (genetics, metabolism)
• Body Fat Distribution
• Chickens
• Diet (veterinary)
• Dietary Supplements (analysis)
• Fatty Liver (drug therapy, metabolism, physiopathology, veterinary)
• Female
• Lecithins (administration & dosage, metabolism)
• Liver (metabolism, physiopathology)
• Poultry Diseases (drug therapy, metabolism, physiopathology)
• Random Allocation
• Glycine max (chemistry)