Search

Growth performance and meat quality are important traits for pig production. The aim of the present study was to investigate the molecular mechanisms underlying growth performance and meat quality, and to identify novel target molecules for predicting the growth performance and meat quality. The differentially expressed genes (DEGs) in Diannan small ears pigs (DSP) and Landrace pigs (LP) were assessed by RNA-sequencing analyzing technology. A total of 339 DEGs were obtained between DSP and LP. 146 DEGs were upregulated in LP compared with DSP and 193 DEGs were upregulated in DSP compared with LP. The DEGs were significantly enriched in 26 GO and 3 KEGG pathways. The protein-protein interaction (PPI) network with 201 nodes and 382 edges was constructed and 5 modules were extracted from the entire network. The identified upregulated expression of genes involved in glycolysis and myogenesis as well as extracellular matrix may be associated with fast body and muscle deposition rates in LP. Increased expression of genes involved in PPAR signaling pathway and fatty acid metabolism as well as oxidative phosphate processes could be related to the intramuscular fat deposition and meat quality in DSP. The present study may provide an improved understanding of the growth performance and meat quality.

Supplemental material, sj-docx-1-jbm-10.1177_17246008211056959 for The association of hepatitis C virus infection and thyroid disease: A systematic review and meta-analysis by Hongpeng Wang, Yixiu Liu and Yanguang Zhao in The International Journal of Biological Markers

Supplemental material, sj-docx-1-jbm-10.1177_17246008211056959 for The association of hepatitis C virus infection and thyroid disease: A systematic review and meta-analysis by Hongpeng Wang, Yixiu Liu and Yanguang Zhao in The International Journal of Biological Markers

This study investigated the filtration and continuous regeneration of a particulate filter system on an engine test bench, consisting of a diesel oxidation catalyst (DOC) and a catalyzed diesel particulate filter (CDPF). Both the DOC and the CDPF led to a high conversion of NO to NO2 for continuous regeneration. The filtration efficiency on solid particle number (SPN) was close to 100%. The post-CDPF particles were mainly in accumulation mode. The downstream SPN was sensitively influenced by the variation of the soot loading. This phenomenon provides a method for determining the balance point temperature by measuring the trend of SPN concentration.

This paper aims to investigate quantitatively the characteristics of the storage and slip of ammonia in a full-size vanadium-based selective catalytic reduction (SCR) catalyst under typical steady and transient conditions on a diesel engine test bench. The effect of space velocity (SV) and exhaust temperature on the ammonia storage process and the storage capacity of the catalyst was studied. The ammonia slip in various transient processes was also investigated. The experimental results indicate that the increase of SV causes early appearance of ammonia slip. Then, the ammonia storage time is shorten to avoid the ammonia slip and the ammonia storage amount is consequently reduced which has an effect on the NOx conversion efficiency. The exhaust temperature is the key factor affecting the ammonia storage capacity of the catalyst which sharply decreases with the increase of temperature. The NOx conversion efficiency strongly depends on the amount of ammonia storage when the temperature is lower than 280 °C,...