scholarly journals Effects of Excess Dietary Tryptophan on Laying Performance, Antioxidant Capacity and Immune Function of Laying Hens

2017 ◽  
Author(s):  
Xinyang Dong ◽  
Xiaoting Zou
Keyword(s):  
Antioxidant Capacity ◽  
Immune Function ◽  
Laying Hens ◽  
Laying Performance

scholarly journals Effect of excess dietary fluoride on laying performance and antioxidant capacity of laying hens

2017 ◽  
Vol 96 (7) ◽  
pp. 2200-2205 ◽  
Author(s):  
L.P. Miao ◽  
M.Y. Zhou ◽  
X.Y. Zhang ◽  
C. Yuan ◽  
X.Y. Dong ◽  
...  
Keyword(s):  
Antioxidant Capacity ◽  
Laying Hens ◽  
Laying Performance

scholarly journals Effects of Dietary Organic and Inorganic Sulfur on Laying Performance, Egg Quality, Ileal Morphology, and Antioxidant Capacity in Laying Hens

Animals ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 87
Author(s):  
Yoo-Bhin Kim ◽  
Sang-Hyeok Lee ◽  
Da-Hye Kim ◽  
Hyun-Gwan Lee ◽  
Yongjun Choi ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Antioxidant Capacity ◽  
Egg Production ◽  
Volatile Fatty Acids ◽  
Laying Hens ◽  
Egg Quality ◽  
Inorganic Sulfur ◽  
Positive Effects ◽  
Laying Performance ◽  
Cont Group

The present study was conducted to investigate the comparative effects of organic and inorganic forms of sulfur, methyl sulfonyl methane (MSM) and sodium sulfate (SS), on laying performance, egg quality, ileal morphology, ileal volatile fatty acids, and antioxidant and stress markers in various biological samples in aged laying hens. A total of 144, 73-week-old Lohman Brown-Lite laying hens were randomly assigned to one of three experimental diets: basal diet (CONT), CONT + 0.2% MSM (MSM), and CONT + 0.3% SS (SS). The trial lasted for 12 weeks. MSM and SS diets contained 0.07% of sulfur, either organic or inorganic. Dietary MSM did not affect egg production or feed conversion ratio at 12 weeks compared with the CONT group. Dietary sulfur did not affect egg quality except for the Haugh unit at 4 weeks, which was lowered (p < 0.05) in the SS group. Compared with the CONT group, a higher (p < 0.05) villus height to crypt depth ratio was observed in the SS group. Dietary sulfur did not affect the percentages of short-chain fatty acids in the ileum. Total antioxidant capacity of the liver increased (p < 0.05) in laying hens fed MSM- and SS-added diets compared with the CONT group. The MSM and SS groups were found to have lowered (p < 0.05) malondialdehyde (MDA) concentration in serum samples compared with CONT. Finally, dietary MSM had the lowest (p < 0.05) MDA concentrations in yolk samples. Taken together, our study showed that dietary organic and inorganic sulfur have positive effects on ileal morphology and antioxidant capacity in laying hens. However, SS-mediated inhibition in laying performance needs to be clarified.

scholarly journals Effects of Dietary Organic and Inorganic Sulfur on Laying Performance, Egg Quality, Ileal Morphology, and Antioxidant Capacity in Laying Hens

2021 ◽  
Author(s):  
Yoo Bhin Kim ◽  
Sang Hyeok Lee ◽  
Da-Hye Kim ◽  
Hyun-Gwan Lee ◽  
Yongjun Choi ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Antioxidant Capacity ◽  
Egg Production ◽  
Volatile Fatty Acids ◽  
Laying Hens ◽  
Egg Quality ◽  
Inorganic Sulfur ◽  
Positive Effects ◽  
Laying Performance ◽  
Cont Group

The present study was conducted to investigate the comparative effects of organic and inorganic forms of sulfur, methyl sulfonyl methane (MSM) and sodium sulfate (SS), on laying performance, egg quality, ileal morphology, ileal volatile fatty acids, and antioxidant and stress markers in various biological samples in aged laying hens. A total of 144, 73-week-old Lohman Brown-Lite laying hens were randomly assigned to one of three experimental diets: basal diet (CONT), CONT + 0.2% MSM (MSM), and CONT + 0.3% SS (SS). The trial lasted for 12 weeks. MSM and SS groups contained 0.07% of sulfur, either organic or inorganic. Dietary MSM did not affect egg production and feed conversion ratio at 12 weeks compared with the CONT group. Dietary sulfur did not affect egg quality except for Haugh unit at 4 weeks which was lowered (P &amp;lt; 0.05) in the SS group. Compared with the CONT group, higher (P &amp;lt; 0.05) villus height and crypt depth ratio was observed in the SS group. None of dietary sulfur affected the percentages of short-chain fatty acids in the ileum. Total antioxidant capacity of liver increased (P &amp;lt; 0.05) in laying hens fed MSM- and SS-added diets compared with the CONT group. The MSM and SS groups lowered (P &amp;lt; 0.05) malondialdehyde (MDA) concentration in serum samples compared with the CONT. Finally, dietary MSM had the lowest (P &amp;lt; 0.05) MDA concentrations in yolk samples. Taken together, our study showed that dietary organic and inorganic sulfur have positive effects on ileal morphology and antioxidant capacity in laying hens. However, SS-mediated inhibition in laying performance needs to be clarified.

scholarly journals Soy saponin improves egg-laying performance and immune function of laying hens

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Peng Li ◽  
Yizhu Zhao ◽  
Shaojia Yan ◽  
Bocheng Song ◽  
Yongfa Liu ◽  
...  
Keyword(s):  
Immune Function ◽  
Production Rate ◽  
Egg Production ◽  
Laying Hens ◽  
Follicle Stimulating Hormone ◽  
Egg Laying ◽  
Mrna Levels ◽  
Laying Performance ◽  
Ifn Γ ◽  
Egg Production Rate

Abstract Background Soy saponin (SS), an active compound in soybean meals, has been widely studied in the medical field. However, it was considered as an anti-nutritional factor in poultry diets. The objective of this experiment was to measure the effects of dietary SS using three dietary treatments on egg-laying performance and immune function of laying hens. Birds were fed a low soybean meal basal diet (CON), a low-SS diet (50 SS) containing 50 mg/kg SS, or a high-SS diet (500 SS) containing 500 mg/kg SS for 10 weeks. At the end of the 5th and 10th week of the trial, samples were collected for analysis. Results Results showed that with 50 mg/kg SS supplementation, the egg production rate, feed conversion ratio (FCR), and eggshell quality tended to be improved. Serum follicle stimulating hormone (FSH) and Interleukin-4 (IL-4) levels were also elevated as well as the peripheral blood LPS stimulation index, the proportion of B lymphocytes, and antibody titer of bovine serum albumin (BSA). We also found that mRNA levels of follicle stimulating hormone receptor (FSHR) in ovarian, nuclear transcription factor kappa B (NF-κB), Transforming growth factor (TGF-β) and interferon γ (IFN-γ) in spleen were up-regulated at the end of the trial. Additionally, dietary 50 mg/kg SS improved the ileal flora via up-regulating the relative abundance of Lactobacillus, Romboutsia and Lactobacillus delbrueckii. Although the immune related indicators were improved with 500 mg/kg SS supplemented, it seemed to have a negative influence on the laying-performance. Specifically, serum alanine aminotransferase (ALT), alkaline phosphatase (ALP), and the ratio of IFN-γ to IL-4 were increased in the 500 SS group at the end of the trial. The mRNA levels of gonadotropin releasing hormone 1 (GnRH1) in Hypothalamus, the estrogen related receptor (ERR) in ovaries were downregulated as well as the egg production rate during the trial with 500 mg/kg SS supplemented. Conclusions The egg production performance was improved by dietary supplemented with 50 mg/kg SS via increasing ovarian FSHR transcription level and serum estrogen level. A beneficial shift in intestinal microflora was recorded, and the immune function of laying hens was also improved with 50 mg/kg SS supplementation. Surprisingly, the long-term supplementation of 500 mg/kg SS exerted a negative impact on the laying performance and physiological functions of the liver of laying hens.

scholarly journals Soy Saponin Improves Egg-Laying Performance and Immune Function of Laying Hens

2021 ◽  
Author(s):  
Li Peng ◽  
Zhao Yizhu ◽  
Yan Shaojia ◽  
Song Bocheng ◽  
Liu Yongfa ◽  
...  
Keyword(s):  
Immune Function ◽  
Soybean Meal ◽  
Egg Production ◽  
Laying Hens ◽  
Follicle Stimulating Hormone ◽  
Egg Laying ◽  
Mrna Levels ◽  
Laying Performance ◽  
Ifn Γ ◽  
Stimulating Hormone

Abstract Background It is of great significance to clarify the role of biologically active ingredients in soybean meal to solve the shortage of soybean meal resources. The objective of this experiment was to design a low soybean meal basal diet and measure the effects of dietary soya saponin (SS) on egg-laying performance and immune function. Results Results showed that egg production rate, feed conversion ratio (FCR), and eggshell quality tended to be improved in the 50 SS groups. Besides, peripheral blood LPS stimulation index and proportion of B lymphocytes ratio at 5th week were increased. Serum follicle stimulating hormone and Interleukin-4 (IL-4) levels were significantly elevated at 10th week in the 50 SS groups. We also found that mRNA levels of follicle stimulating hormone receptor (FSHR) in ovarian, nuclear transcription factor kappa B (NF-κB), Interleukin-12 (IL-12), Transforming growth factor (TGF-β) and Interferon γ (IFN-γ) in spleen were up-regulated at the end of the trial. Beyond that, the relative abundance of Proteobacteria in the ileal flora was dropped, and the relative abundances of Lactobacillus, Romboutsia and Lactobacillus delbrueckii were elevated in the 50 SS group. Similar to the above were that at the end of the 5th week, there are same biological effects on laying hens about 50 and 500 mg/Kg SS. While at the end of the trial, the blood levels of alanine aminotransferase, alkaline phosphatase, IFN-γ, and the ratio of IFN-γ to IL-4 were significantly increased in the 500 SS group. What’s more, the gene mRNA levels of NF-κB, IL-12, IFN-γ, Interleukin-1β (IL-1β), and the ratio of IFN-γ to IL-4 about spleen were up-regulated in the 500 SS group. The mRNA levels of genes such as the gonadotropin releasing hormone 1 (GnRH1) in Hypothalamus, the estrogen related receptor (ERR) in ovaries were down-regulated with 500 mg/kg SS supplementation. Conclustions: The egg production performance was improved by dietary supplementation with 50 mg/kg SS via stimulating ovaries development, increasing ovarian FSHR transcription level and serum estrogen level. The intestinal microflora was regulated, and the immune function of laying hens also was improved with 50 mg/kg SS supplementation. Unexpectedly, the immune homeostasis of the laying hens tilted towards the pro-inflammatory direction with 500 mg/kg SS supplementation. It resulted in a negative impact on the laying performance of laying hens and physiological functions of the liver.

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