scholarly journals Effects of dietary supplementation with detoxified Rhus verniciflua sap on egg production, yolk lipid and intestinal microflora in laying hens

2018 ◽  
Vol 31 (1) ◽  
pp. 86-90 ◽  
Author(s):  
Byoung-Ki An ◽  
Je-Hun Kim ◽  
Lan Zheng ◽  
Byung-Hern Moon ◽  
Kyung-Woo Lee
Keyword(s):  
Egg Production ◽  
Intestinal Microflora ◽  
Laying Hens ◽  
Dietary Supplementation ◽  
Yolk Lipid ◽  
Rhus Verniciflua

scholarly journals Supplementation of spirulina (Spirulina platensis) on yolk colour, egg quality and production performance of laying hens

2018 ◽  
Vol 34 (2) ◽  
pp. 71-78
Author(s):  
M Ahammed ◽  
S Sharmin ◽  
A Khatun ◽  
KMS Islam
Keyword(s):  
Spirulina Platensis ◽  
Egg Production ◽  
Laying Hens ◽  
Egg Quality ◽  
Dietary Supplementation ◽  
Egg Yolk ◽  
Production Performance ◽  
Dietary Treatments

A total of 96 Shaver 579 laying hens of 78 weeks of age were studied for the effects on egg production of dietary supplementation with spirulina (Spirulina platensis). The hens were divided into four dietary treatments with six replications of four birds in each group. Birds of three groups were supplemented with 0.1%, 0.2% and 0.3% spirulina and one group was kept as control. Yolk colour significantly improved (P<0.01) as compared to control, without affecting any other production performances. It is suggested that dietary supplementation of spirulina at 0.2 to 0.3% levels in aged laying hens enhanced egg yolk colour. Bangl. vet. 2017. Vol. 34, No. 2, 71-78

Effects of chitooligosaccharide supplementation on egg production, egg quality and blood profiles in laying hens

2018 ◽  
Author(s):  
Yang Jiao ◽  
Rajesh Jha ◽  
Wan Lin Zhang ◽  
In Ho Kim
Keyword(s):  
Egg Production ◽  
Laying Hens ◽  
Egg Quality ◽  
Density Lipoprotein ◽  
Dietary Supplementation ◽  
Basal Diet ◽  
Linear Effects ◽  
Dietary Treatments ◽  
Haugh Unit ◽  
Blood Profiles

The present study evaluated the effects of dietary supplementation of chitooligosaccharide (COS) on egg production, egg quality and blood profiles in laying hens. A total of 192 Hy-Line Brown laying hens (initial age- 46 weeks) were allocated to one of four treatments with eight replications per treatment and six adjacent cages as replication for eight-weeks study. Dietary treatments consisted of CON, basal diet; COS1, CON + 0.1% COS; COS2, CON + 0.2% COS; and COS3, CON + 0.3% COS. Linear improvement (p Lass Than 0.05) was observed in egg quality and high-density lipoprotein cholesterol (HDL/C) concentration at subsequent weeks. In week 8, linear (P=0.04) improvement was observed in haugh unit of egg with the increase in the dose of COS. In addition, linear effects (p Lass Than 0.05) on eggshell thickness at week 3, 5, 6, 7 and 8 were detected as the level for increased COS. In conclusion, the supplementation of COS in laying hens diets linearly improved the egg quality and the HDL/C concentration. Thus, COS has the potential to be used as a substitute to antibiotics in layer hen’s diets.

Fermented feed for laying hens: effects on egg production, egg quality, plumage condition and composition and activity of the intestinal microflora

2009 ◽  
Vol 50 (2) ◽  
pp. 228-239 ◽  
Author(s):  
R.M. Engberg ◽  
M. Hammersh⊘j ◽  
N.F. Johansen ◽  
M.S. Abousekken ◽  
S. Steenfeldt ◽  
...  
Keyword(s):  
Egg Production ◽  
Intestinal Microflora ◽  
Laying Hens ◽  
Egg Quality ◽  
Fermented Feed

scholarly journals Dietary supplementation with sodium humate improves egg quality and immune function of laying hens

2020 ◽  
Vol 8 (2) ◽  
pp. 93-99
Author(s):  
A.R. Zhang ◽  
S.A. Pirzado ◽  
G.H. Liu ◽  
Z.M. Chen ◽  
W.H. Chang ◽  
...  
Keyword(s):  
Egg Production ◽  
Laying Hens ◽  
Egg Quality ◽  
Control Diet ◽  
Dietary Supplementation ◽  
Basal Diet ◽  
Egg Yolk ◽  
Shell Quality ◽  
Sodium Humate ◽  
Antioxidant Parameters

The aim of this study was to evaluate the influence of the dietary addition of sodium humate (HAS) on performance and immune response of laying hens during peak lay, over an eight-week period. Laying hens, aged 24 weeks old, were randomly allotted to four dietary treatments: a basal control diet or the basal diet supplemented with 0.1, 0.3 or 0.5% HAS. Each treatment had six replicates with 15 layers per replicate. Egg production, egg quality, serum antioxidant parameters and immunity indexes were measured. HAS had no significant effect on egg production or egg and shell quality, but all supplemental levels significantly improved Haugh unit values and egg yolk colour. Supplementation with all levels of HAS significantly increased serum immunoglobuline (Ig) level compared to the hens fed the control diet. Feeding either 0.1 or 0.5% HAS significantly increased serum IgM levels. The results indicated that dietary supplementation with HAS can enhance egg albumin quality and improve immunity in laying hens.

scholarly journals PSVII-22 Effect of dietary supplementation of vitamin C on productive performance, egg quality, relative organ weight, and tibia strength of laying hens

2019 ◽  
Vol 97 (Supplement_3) ◽  
pp. 354-355
Author(s):  
Jomari B Delos Reyes ◽  
Jong Hyuk Kim ◽  
Geun Hyeon Park ◽  
Hyeon Seok Choi ◽  
Gi Ppeum Han ◽  
...  
Keyword(s):  
Vitamin C ◽  
Egg Production ◽  
Laying Hens ◽  
Egg Quality ◽  
Dietary Supplementation ◽  
Organ Weight ◽  
Egg Mass ◽  
Productive Performance ◽  
Relative Organ Weight ◽  
Vitamin C Supplementation

Abstract Endogenous synthesis of vitamin C may satisfy its requirement for laying hens; however, some previous experiments showed beneficial effects of dietary supplementation of vitamin C in laying hens. Thus, the results are still controversial. The objective of the current experiment, therefore, was to investigate the effect of vitamin C supplementation in diets on productive performance, egg quality, relative organ weight, and tibia strength in laying hens. A total of 504 46-wk-old Hy-Line Brown laying hens were allotted to 1 of 6 dietary treatments with 7 replicates in a completely randomized design. Each replicate had 12 hens. Diets were prepared by supplementing the basal diet with vitamin C at the levels of 250, 500, 1,000, 2,000, or 3,000 mg/kg and were fed to hens for 6 wks. Results indicated that increasing supplementation of vitamin C in diets increased hen-day egg production and egg mass (quadratic, P &lt; 0.05), but decreased production of broken or soft-shell eggs (linear and quadratic, P &lt; 0.01) and feed conversion ratio (quadratic, P &lt; 0.05). These positive effects were observable at the supplementation level of 250 mg/kg vitamin C, but there were no further benefits at the greater levels of vitamin C. Increasing supplementation of vitamin C in diets had no effects on egg quality, except for a decrease (quadratic, P &lt; 0.01) in egg yolk color with increasing vitamin C supplementation. The relative weights of the liver, kidney, and spleen were not affected by increasing supplementation of vitamin C in diets. Tibia strength was not influenced by increasing supplementation of vitamin C. In conclusion, dietary supplementation of vitamin C has a beneficial effect on egg production of laying hens. Quadratic responses of increasing vitamin C supplementation in diets reveal that supplementation of 250 mg/kg vitamin C is recommended for diets fed to laying hens at 46–52 wks of age.

scholarly journals Effect of Dietary Supplementation of Fermented Pine Needle Extract on Productive Performance, Egg Quality, and Serum Lipid Parameters in Laying Hens

Animals ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 1475
Author(s):  
Damini Kothari ◽  
Jong-Seok Oh ◽  
Ju-Hee Kim ◽  
Woo-Do Lee ◽  
Soo-Ki Kim
Keyword(s):  
Serum Lipid ◽  
Egg Production ◽  
Laying Hens ◽  
Egg Quality ◽  
Dietary Supplementation ◽  
Basal Diet ◽  
Egg Yolk ◽  
Egg Mass ◽  
Productive Performance ◽  
Laying Performance

This study aimed to investigate the supplemental effects of fermented pine (Pinus densiflora) needle extract (FPNE) in laying hen diets on productive performance, egg quality, and serum lipid metabolites. A total of 108 40-week-old Hy-line brown laying hens were randomly assigned to one of the three dietary treatment groups: (1) basal diet + 0 mL FPNE/kg diet (CON), (2) basal diet + 2.5 mL FPNE/kg diet (T1), or (3) basal diet + 5 mL FPNE/kg diet (T2) for 6 weeks. Each group consisted of four replicates of nine hens each. Feed and water provided ad libitum. Results showed that dietary supplementation of FPNE increased egg production percentage (linear, p < 0.01 and quadratic, p < 0.05), egg mass (linear, p < 0.05), and feed intake (linear, p < 0.05) during the entire experimental period. In addition, dietary inclusion of FPNE significantly increased the eggshell color (linear, p < 0.01), egg yolk color (quadratic, p < 0.01), and eggshell breaking strength (linear, p < 0.05 and quadratic, p < 0.05) while the Haugh unit decreased (quadratic, p < 0.05). However, serum lipid profile did not differ among the dietary treatments (p > 0.05). Notably, antioxidant activity of egg yolk was improved by significantly decreasing the malondialdehyde content in egg yolks after 6 weeks of storage (linear, p < 0.001 and quadratic, p < 0.05). In summary, dietary inclusion of FPNE could improve laying performance and the antioxidant capacity of eggs.

scholarly journals Effects of dietary supplementation of β-mannanase on performance and egg quality in laying hens

2019 ◽  
Vol 18 (03) ◽  
pp. 41-47
Author(s):  
Tung M. Che
Keyword(s):  
Moisture Content ◽  
Egg Production ◽  
Laying Hens ◽  
Egg Quality ◽  
Dietary Supplementation ◽  
Basal Diet ◽  
Productive Performance ◽  
Randomized Design ◽  
Completely Randomized Design ◽  
Dietary Treatments

The objective of the experiment was to evaluate effects of dietary supplementation of β-mannanase (Hemicell®) on productive performance, egg quality, and fecal moisture content in laying hens from 20 to 35 weeks of age. A total of 375 Isa Brown’s hens (1615.6 ± 76.4 g/bird) were randomly assigned to 5 treatments in a completely randomized design. The 5 dietary treatments included (1) basal diet with a level of 2800 kcal ME and no β-mannanase supplementation (HE, Control), (2) HE + 32 units of β-mannanase/g of feed, (3) HE + 64 units of β-mannanase/g of feed, (4) basal diet with a level of 2700 kcal ME (LE) + 32 units of β-mannanase/g of feed, and (5) LE + 64 units of β-mannanase/g of feed. Each treatment was replicated with 25 cages of 3 hens each. All diets were in meal form and contained no antibiotics. The addition of β-mannanase to HE diets did not affect the egg production of birds as compared with the control (P > 0.05). The birds fed LE diets with β-mannanase had the same egg production as those fed the control and β-mannanase-supplemented HE diets (P > 0.05). Differences in egg weight, egg quality, survival rate, and fecal moisture content were not significant among the treatments (P > 0.05). Briefly, addition of β-mannanase (32 units/g of feed) to LE diets would be beneficial for layers during the early laying period as it resulted in the same performance and egg quality as the HE diets without β-mannanase supplementation.

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