Effects of Dietary Zinc on Performance, Zinc Transporters Expression, and Immune Response of Aged Laying Hens

2019 ◽  
Vol 196 (1) ◽  
pp. 231-242
Author(s):  
Qiqi Han ◽  
Yuming Guo ◽  
Bingkun Zhang ◽  
Wei Nie
Keyword(s):  
Immune Response ◽  
Laying Hens ◽  
Zinc Transporters ◽  
Dietary Zinc

scholarly journals Integument, mortality, and skeletal strength in extended production cycles for laying hens – effects of genotype and dietary zinc source

2021 ◽  
Author(s):  
Helena Wall ◽  
Malin Boyner ◽  
Dirk Jan de Koning ◽  
Andreas Kindmark ◽  
Heather A McCormack ◽  
...  
Keyword(s):  
Laying Hens ◽  
Dietary Zinc ◽  
Zinc Source ◽  
Production Cycles

scholarly journals Immunomodulatory action of jacalin from Artocarpus integrifolia and mannoprotein from Saccharomyces uvarum on the humoral immunity of laying hens

2020 ◽  
Vol 50 (4) ◽  
Author(s):  
Marco Aurélio Chiara Silva ◽  
Miriele Caroline da Silva ◽  
João Waine Pinheiro ◽  
Raul Jorge Hernan Castro-Goméz ◽  
Alice Eiko Murakami ◽  
...  
Keyword(s):  
Immune Response ◽  
Protein Interactions ◽  
Antibody Production ◽  
Laying Hens ◽  
Lectin Binding ◽  
Primary Immune Response ◽  
Immunomodulatory Effects ◽  
Saccharomyces Uvarum ◽  
Immunomodulatory Properties ◽  
Artocarpus Integrifolia

ABSTRACT: Advances in the fields of glycobiology and immunology have provided many insights into the role of carbohydrate-protein interactions in the immune system. Jacalin of Artocarpus integrifolia (JCA) and structural mannoprotein of Saccharomyces uvarum (MPS) are molecules with immunomodulatory properties. JCA is an IgA human lectin binding molecule that causes the mitogenic stimulation of immune cells, production of cytokines, chemotaxis, and activation of leukocytes. Studies on the immunomodulatory properties of JCA and MPS in mammals and fish suggest that they have an action on antibody production. The aim of this study was to investigate the possible action of JCA and MPS on the production of specific antibodies in laying hens. For this, laying hens were inoculated with an intra abdominal injection of sheep red blood cells (SRBC) with either JCA (0.075 µg, 0.75 µg, and 7.5 µg) or MPS (20 µg and 100 µg). Levels of anti-SRBC antibodies of the IgY, IgM, and IgA classes were evaluated by ELISA. Results showed that JCA and MPS have immunomodulatory effects on levels of anti-SRBC IgM, IgA, and IgY. An immunostimulatory effect of JCA was observed in primary immune response on anti-SRBC IgY, while an inhibitory effect of JCA and MPS was observed in secondary immune response on the production of IgM and IgA anti-SRBC. These results suggested that MPS and JCA have immunomodulatory effects on antibody production and could be used in future studies on humoral immune response in poultry.

Effect of Dietary Zinc and Niacin on Laying Hens Performance and Egg Quality

2008 ◽  
Vol 7 (8) ◽  
pp. 757-764 ◽  
Author(s):  
O.M. El-Hussein ◽  
M.O. Abd-Elsame ◽  
I.I. Omara ◽  
A.M. Fouad
Keyword(s):  
Laying Hens ◽  
Egg Quality ◽  
Dietary Zinc

scholarly journals Whole Blood Transcriptome Analysis Reveals Positive Effects of Dried Olive Pomace-Supplemented Diet on Inflammation and Cholesterol in Laying Hens

Animals ◽  
2019 ◽  
Vol 9 (7) ◽  
pp. 427 ◽  
Author(s):  
Marco Iannaccone ◽  
Andrea Ianni ◽  
Solange Ramazzotti ◽  
Lisa Grotta ◽  
Elettra Marone ◽  
...  
Keyword(s):  
Immune Response ◽  
Laying Hens ◽  
Cholesterol Biosynthesis ◽  
Control Group ◽  
Sequencing Analysis ◽  
Olive Pomace ◽  
Positive Effects ◽  
Diet Control ◽  
Productive Traits ◽  
Olive Industry

Olive pomace (OP) represents one of the by-products of the olive industry and represents an important source of bioactive compounds. This characteristic makes OP a potential feed supplement in livestock nutrition. Thus, in the last years, several studies have been published to evaluate the productive traits following OP supplementation in animal diets; however, relatively little is known from a molecular biology standpoint. Therefore, in this study, we report the RNA-sequencing analysis of laying hens fed with a 10% dried OP (DOP) supplementation. Applying a false discovery rate (FDR) <0.05 and a Log2Fc either less than −1.5 or higher than +1.5, we identified 264 differentially regulated genes (DEGs) between the non-supplemented diet control group (CTR) and the DOP group. Using the 264 DEGs to identify enriched biological pathways, we noted that cholesterol biosynthesis showed the highest enrichment followed by several pathways related to immune response and inflammation. As a consequence, when we quantified the cholesterol amount in yolk egg, we found a significant reduction in the DOP vs. the CTR group (p < 0.05). In conclusion, this study shows that DPO affects gene expression in laying hens, which is directly correlated with cholesterol decrease and can potentially ameliorate health status influencing immune response and inflammation.

scholarly journals Dietary Zinc and Fibre Source can Influence the Mineral and Antioxidant Status of Piglets

Animals ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 497 ◽  
Author(s):  
Monika Holodova ◽  
Klaudia Cobanova ◽  
Zuzana Sefcikova ◽  
Marcin Barszcz ◽  
Anna Tuśnio ◽  
...  
Keyword(s):  
Small Intestine ◽  
Antioxidant Status ◽  
Zinc Transporters ◽  
Transport Systems ◽  
Thiol Groups ◽  
Dietary Zinc ◽  
Crude Fibre ◽  
Sod Activity ◽  
Zn Distribution ◽  
Fe And Mn

The study investigated the effect of dietary zinc glycine chelate and potato fibre on the absorption and utilisation of Zn, Cu, Fe, and Mn; the activity of Zn-containing enzymes (superoxide dismutase, SOD; alkaline phosphatase, ALP); and zinc transporter concentrations (metalothionein1, MT1; zinc transporter1, ZnT1) in tissues, with a special emphasis on the small intestine. Twenty-four barrows (Danbred × Duroc) were randomly allotted to four diets (supplemented with 10 g/kg of crude fibre and 120 mg Zn/kg) that consisted of cellulose and either zinc sulphate (C) or zinc glycinate (ZnGly), or contained potato fibre supplemented with ZnSO4 (PF) or ZnGly (PF + ZnGly). Feeding PF can influence the Zn absorption in the small intestine due to reduced zinc transporters MT1 and ZnT1 in the jejunum. The activity of antioxidant enzyme SOD and liver ZnT1, and duodenal iron concentrations were increased in the PF treatments. Dietary ZnGly did not significantly influence the Zn distribution, but it may alter the absorption of Fe and Mn. Given the elevated content of thiol groups and the Zn/Cu ratio in plasma, as well as the altered SOD activity and MT content in the tissues, we can conclude that feeding PF and ZnGly can influence the mineral and antioxidant status of growing piglets. However, further research is needed in order to elucidate the effect of both dietary sources on the transport systems of other minerals in enterocytes.

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