Effects of Arginine Supplementation on Organ Development, Egg Quality, Serum Biochemical parameters, and Immune Status of Laying Hens

Abstract

This experiment was conducted to study the effects of arginine supplementation on organ development, egg quality, blood parameters, and immune status of laying hens. A total of 360 25-week-old brown Leghorn laying hens were randomly divided into three groups with six replicates of 20 birds each and fed diets supplemented with 0, 8.5, or 17 mg of L-arginine/kg for 42 days. Results showed that the weight of proventriculus and duodenum in the treatment supplemented with 17 mg/kg L-arginine was heavier than that of 0 mg L-arginine/kg treatment (p<0.05). The weight of oviduct in the treatments supplemented with 17 mg/kg L-arginine was smaller than that of 0 and 8.5 mg L-arginine/ kg treatment (p<0.05), and the small yellow follicle amount in the treatment supplemented with 17 mg/kg L-arginine was less than that of 0 mg L-arginine/kg treatment (p<0.05), while its yolk color was deeper than that of 0 mg L-arginine/kg treatment (p<0.05), and the IgY content showed the same tendency. Total cholesterol and triglyceride levels in the treatment supplemented with 8.5 mg/kg L-arginine were lower than that of 0 mg L-arginine/kg treatment (p<0.05). The concentration of IL-2 in the treatment supplemented with 17 mg/ kg L-arginine were more than that of 0 mg L-arginine/kg treatment (p<0.05). The findings of this study show that 17 mg/kg L-arginine supplementation has beneficial effects onlayers' immune status and yolk IgY content, as well as on proventriculus and duodenum weight while no adverse effects were observed on laying performance, egg quality, or blood parameters.

The effect of different dietary ratios of lysine, arginine and methionine on biochemical parameters and hormone secretion in turkeys

“…(2010), Fouad, El‐Senousey, Yang, and Yao (2013) and Yang et al. (2016) in chickens suggest that Arg supplementation exceeding the NRC recommendation (1994) may reduce TC blood levels. According to Fouad et al.…”

Effect of Supplementing Higher Level of Dietary L-Arginine on Serum Parameters in Broiler Chicken

“…The higher concentration of serum total protein in arginine supplemented groups could be possibly associated with higher demand for lean tissue maintenance and turnover [6]. Moreover, increased globulin fraction in arginine supplemented groups might be due to increased immune response [12].…”

“…In addition to that 0.25 % Larginine supplementation in the diets of broiler chickens reduced the blood plasma, total cholesterol and triglyceride concentrations [5]. Recent evidences about argnine supplementation were reported by [6] that lowered total serum cholesterol and triglyceride levels in the hens supplemented with 8.5 mg Larginine / kg diet than those of hens in the 0 mg L-arginine / kg diet. Hence, the study was designed and evaluated by supplementing different levels of arginine on serum biochemical parameters in broiler chicks.…”

Mısır-Soya Küspesi Diyetine Eklenen Guanidino Asetik Asitin Yumurta Tavuklarının Üretim Performansı, Kan Biyokimyasal Parametreleri ve Üreme Hormonlarına Etkisi

“…In the present study, since nitric oxide level was not affected by GAA supplementing, thus it is reasonable that lipid profile is not also affected. Considering liver enzymes in serum, Yang et al [19] showed that dietary inclusion of arginine significantly reduced levels of liver aspartate aminotransferase in laying hens. The increased aspartate aminotransferase in blood is considered as index for muscle and liver damages, which its levels are different in various birds [38] .…”

“…On the other hand, arginine reduces abdominal lipid and balances lipid storage by nitric oxide synthesis [18] . Yang et al [19] showed that dietary inclusion of arginine significantly reduced levels of liver aspartate aminotransferase in laying hens, implicating that arginine reduces liver damages. GAA is able to sparing body pool of arginine which is used for creatine synthesis [20] since it is converted to creatine in bird's kidney and liver [21] .…”