Pseudomonas plecoglossicida (P. plecoglossicida) is a pathogen in aquaculture that causes considerable economic loss. According to artificial infection experiments, the fish were classified into control group, moribund group, and survival group. Compared to the control group, both the moribund group and the survival group of fish had fewer red blood cells (RBCs) and lower oxygen saturation (SaO2). Furthermore, the fish in the survival group has more RBCs and SaO2 compared to the moribund group. The concentrations of total iron, ferrous iron, ferric iron, and mineralized iron in the fish spleen of the moribund and survival groups were lower compared to those of the control group. Additionally, the concentrations of these iron components in the fish spleen of the survival group were higher than those of the moribund group. The results demonstrated that iron mineralization is involved in the survival of fish challenged with P. plecoglossicida. Compared to the control and survival groups, the fish spleen had several distinguishing features in the moribund group, including less reduced glutathione (GSH), higher mitochondrial complex V activity, more lipid peroxidation, and reactive oxygen species, as well as reduced glutathione peroxidase 4 (gpx4) expression. Moreover, there were intact cell membranes, a normal nucleus size, no chromatin concentration, and disappearance of cristae in the mitochondria of the spleens of the moribund group. The characteristics of spleen cells in the moribund group were consistent with ferroptosis, suggesting that ferroptosis was involved in the death of fish challenged with P. plecoglossicida.

Large-scale genotyping at a low cost is crucial for molecular breeding of livestock. In this study, the Cattle110K capture chip was developed, based on the genotyping by target sequencing system. The chip panel included 112,180 single necleotide polymorphisms (SNPs), from potential functional regions screened by genome-wide associated study, BayesB, expression quantitative trait loci-mapping, ATAC-seq, and reported functional markers. All the SNPs on the panel were distributed evenly on the cattle genome, with more than 99% of the markers having a minor allele frequency greater than 0.05. Assessment results indicated that a total of 1.2 M high-quality SNPs were identified in the 110 K regions, averaging approximately 10 SNPs per target sequence. The genotype consistency for the repetitive samples using the Cattle110K liquid chip was 99.21% while the concordance between the Illumina BovineHD BeadChip and this chip averaged 98.17%. A significant association signal for slaughter weight and carcass length was identified on 37.3?41.5 Mb of chromosome 6, pinpointing the NCAPG-LCORL locus. This locus has previously been associated with meat and carcass traits in cattle. Additionally, novel candidate regions were identified around 3.4 Mb of chromosome 13 and 73.5 Mb of chromosome 8, significantly correlated with hip height and marbling score, respectively. We compared the accuracy of genomic estimated breeding values between the Illumina BovineHD BeadChip and this chip. The results demonstrated that the Cattle110K capture chip had a comparable ability in genomic prediction to the Illumina BovineHD BeadChip. Advances in using the cost-effective liquid capture chip are expected to accelerate the genetic progress of cattle in the coming years.

The objective of this study is to evaluate the effects of tannic acid (TA) derived from gallnut supplementation on growth performance and health status of weaned piglets. A total of 432 weanling piglets (7.05 ± 1.05 kg) were randomly allocated into 4 treatment groups with 6 replicates of 18 pigs/pen. Piglets were fed either a basal diet (CON), or basal diets supplemented with 1.5 kg/t TA, 3.0 kg/t TA, or 1.8 kg/t zinc oxide (ZnO) for 21 days. The results showed that, compared to the CON, dietary TA supplementation did not affect (p > 0.05) growth performance and serum biochemistry of weaned piglets. However, 3.0 kg/t TA had higher SOD, GPX, and CAT activities and a lower MDA concentration in the jejunum than those of the CON or the ZnO group. Meanwhile, 3.0 kg/t TA increased (p <0.05) villus height and villus height/crypt depth, and decreased (p <0.05) crypt depth in the small intestine. Dietary TA also downregulated (p <0.05) IL-1? and TNF-α expression in jejunum. Furthermore, 3.0 kg/t TA reduced (p <0.05) the abundance of Candidatus Brocadia and Escherichia-Shigella in cecal digesta. Notably, both Candidatus Brocadia and Escherichia-Shigella had a negative correlation with antioxidant enzymes activities (R