scholarly journals Effect of suboptimal levels of non-phytate phosphorus and exogenous phytase on precaecal digestibility of phosphorus and calcium in laying hens

2017 ◽  
Vol 62 (No. 11) ◽  
pp. 473-481
Author(s):  
A. Musilova ◽  
M. Lichovnikova ◽  
L. Kupcikova ◽  
V. Anderle
Keyword(s):  
Egg Production ◽  
Phosphorus Content ◽  
Laying Hens ◽  
Phosphorus Concentration ◽  
Posterior Half ◽  
Daily Calcium Intake ◽  
Ileal Digestibility ◽  
Phytate Phosphorus ◽  
Dietary Phosphorus ◽  
Significant Difference

The precaecal digestibility of phosphorus and calcium in laying hens was evaluated at two dietary levels of non-phytate phosphorus (NPP; 1.58 and 2.03 g/kg) and two levels of exogenous 3-phytase (F; 0 and 300 phytase units (FTU)/kg). A total of 192 ISA Brown hens were used for the study, and were housed in enriched cages (8 per cage). At the end of the experiment, which was the peak of the egg production, the content of the posterior half of the ileum from each hen was collected. The lower level of NPP significantly (P < 0.05) improved the precaecal phosphorus digestibility coefficient. There was no significant difference in the amount of absorbed phosphorus between the lower and the higher level of NPP. The level of NPP with supplementation of exo-genous phytase had a significant effect (P < 0.001) on the concentration of phosphorus in ileum, while the higher level of NPP increased phosphorus concentration in the ileum and phytase decreased phosphorus content in the ileal digesta. The phytase had no significant effect on phosphorus precaecal digestibility. There was no significant effect of the both factors, level of NPP, and exogenous phytase on the daily calcium intake, the amount of absorbed calcium, the content of calcium in ileal digesta, and on the precaecal digestibility of calcium. However a significant effect (P < 0.05) of the interaction between NPP and phytase was observed on the amount of absorbed calcium and on the precaecal digestibility coefficient. It can be concluded that the estimation of phosphorus ileal digestibility depends on the level of dietary phosphorus.

scholarly journals Vegetable pigments in sorghum-based diets for laying hens

2020 ◽  
Vol 12 ◽  
Author(s):  
Donaldo Antônio Nunes Junior ◽  
Heder José D’Avila Lima ◽  
Jean Kaique Valentim ◽  
Laura Aline Zanelatto Souza ◽  
Nayara Emanoelle Matos e Silva ◽  
...  
Keyword(s):  
Egg Production ◽  
Laying Hens ◽  
Egg Quality ◽  
Energy Sources ◽  
Natural Pigment ◽  
Randomized Design ◽  
Significant Difference ◽  
Egg Yolks ◽  
Completely Randomized Design

The main objective of this research is to evaluate the inclusion of different natural pigment solutions in diets formulated with maize and sorghum solutions on the growth performance and egg quality of commercial laying hens created in hot climates. Throughout the conduction of this experiment, were used 252 laying hens of the Hisex Brow, in a completely randomized design, with six treatments, seven repetitions, and six birds per plot. The experimental diets were assigned with different energy sources and adding pigmentation solutions, diet 1 (corn), diet 2 (corn + annatto), diet 3 (corn + carrot), diet 4 (sorghum), diet 5 (sorghum + annatto), diet 6 (sorghum + Carrot).  Afterward, being evaluated the performance and quality of eggs. It was observed significant difference with reference t egg production, egg weight (g), gem weight (g), the weight of shell (g), albumin in weight (g), and gem coloration (tons) among the treatments. There was no difference in the parameters of performance and quality of eggs evaluated, only the variable yolk color had a significant effect between treatments. Replacing the energy source of the corn diet with sorghum in the diet of laying hens at peak production provides similar performance and egg quality, which can be a substitute for quality and efficiency. The use of annatto and carrots as a natural pigmentation promotes greater pigmentation of the egg yolks of laying Hisex Brown eggs and does not impair the performance of the birds.

scholarly journals Production performance and egg quality of White Rock laying hens fed diets containing whole linseed

2020 ◽  
Vol 20 (1-2) ◽  
pp. 48-53
Author(s):  
H Khatun ◽  
MN Islam ◽  
MA Rashid ◽  
MY Ali ◽  
MSK Sarker
Keyword(s):  
Egg Production ◽  
Laying Hens ◽  
Egg Quality ◽  
Control Diet ◽  
Production Performance ◽  
Egg Mass ◽  
Feed Conversion ◽  
Egg Weight ◽  
Quality Aspects ◽  
Significant Difference

This study was conducted to know the production performance of laying hen by using different graded level of linseed. At 56 weeks of age, a total of 160 laying hens were raised up to 63 weeks of age. All hens were fed a basal corn soyabean meal diet. The experiment was allowed 4 dietary treatments (T0, no addition of whole linseed in the basal diet; T1,  addition of 5% whole linseed; T2, addition of 10% whole linseed and T3, addition of 15% whole linseed) with 5 replications and per replication contains eight hens. Egg production, feed intake, egg weight of each treatment was recorded. Egg samples were collected and analyzed for egg quality. The results showed that egg production and egg mass (kg) exhibited for all dietary treatment groups were unaffected (P>0.05) by feeding linseed to the laying hens. Feed Conversion Ratio (FCR) was found significant difference within the four dietary group (P<0.05). Egg quality aspects such as yolk weight, egg weight, HU and yolk index were not differed significantly (P>0.05) among treatments.  A trend for lower yolk weight was observed in birds fed 10% linseed, where as the highest yolk weight percentage was recorded in control diet. There was no statistical difference among the different diets for yolk index. The results of the present trial suggested that feeding linseed to the laying hens has no detrimental effects on egg production and egg quality. Bangladesh J. of Livestock Res. 20(1-2): 48-53, Jan-Dec 2013

scholarly journals Effects of Selenium Conjugated to Insect Protein on Pharmacokinetics of Florfenicol and Enrofloxacin in Laying Hens

2021 ◽  
Vol 8 ◽  
Author(s):  
Kai Qiu ◽  
Uchechukwu Edna Obianwuna ◽  
Jing Wang ◽  
Hai-jun Zhang ◽  
Guang-hai Qi ◽  
...  
Keyword(s):  
Feed Intake ◽  
Egg Production ◽  
Laying Hens ◽  
Drug Effects ◽  
Control Group ◽  
Poultry Production ◽  
Blank Control Group ◽  
Organic Selenium ◽  
Laying Performance ◽  
Significant Difference

In the context of increasing awareness on the dietary supplementation of organic selenium in commercial poultry production and ensuring safe egg production, the present study investigated the effects of selenium on the pharmacokinetics of the therapeutic use of florfenicol and enrofloxacin from perspectives of laying performance, selenium deposition in eggs, and drug residue in plasma, organs, and eggs. A 2 × 3 factorial arrangement with two kinds of drugs (florfenicol vs. enrofloxacin, 200 mg/kg) and three levels of dietary organic selenium SCIP (selenium conjugated to insect protein) (0, 2, and 5 mg/kg) was designed together with a blank control group. Healthy Hy-Line Brown laying hens (n = 252, 40-week-old and 90.0 ± 1.7% of egg production rate) were randomly allocated into one of seven treatments with six replicates and six hens per replicate. The experiment lasted for 42 days and consisted of three periods (adjusted stage, depositional stage, and eliminating stage) of 14 days each. These stages entail feeding of the laying hens with basal diets, addition of drugs and selenium synchronously into the diets, drug withdrawal from diet, and supply of selenium uninterruptedly in the diet. Egg production and feed intake were recorded on daily and weekly bases, respectively. The selenium content in egg yolk, egg white, and whole eggs and the drug residues in eggs, plasma, liver, kidney, and breast muscle were determined on days 2, 3, 5, 6, 7, 9, 11, and 14 of the depositional and eliminating stages. There was no significant difference (p &gt; 0.05) in egg production among the dietary treatments, but feed intake decreased significantly (p &lt; 0.05) in the drug treatment group compared to other groups. Dietary organic selenium decreased the residue of drugs in tissues and eggs, while the metabolism and deposition of selenium in laying hens were suppressed due to drug effects. The results of the present study are of significance to enrich the knowledge of the pharmacokinetics of florfenicol and enrofloxacin in laying hens and ensure the quality of poultry products.

scholarly journals Fermented Astragalus in diet improved laying performance, egg quality, antioxidant and immunological status and intestinal microbiota in laying hens

2020 ◽  
Author(s):  
Hongtao Shi ◽  
Baiyu Wang ◽  
Chuanzhou Bian ◽  
Yingqian Han ◽  
Hongxing Qiao
Keyword(s):  
Intestinal Microbiota ◽  
Egg Production ◽  
Laying Hens ◽  
Egg Quality ◽  
Feed Additive ◽  
Control Group ◽  
Poultry Production ◽  
Immunological Status ◽  
Laying Performance ◽  
Significant Difference

Abstract In the era of increased antibiotic resistance and ever stricter control on antibiotic use, it is urgent to develop green, safe and non-residue alternatives to antibiotics applied to the poultry industry. To this end, we supplied the potential Lactobacillus Plantarum (L. Plantarum) fermented Astragalus in the diet of laying hens, with a final addition of 3‰. Its effects have been assessed on laying performance, egg quality, antioxidant and immunological status and intestinal microbiota, and are compared to the control group, to the Astragalus group containing 3‰ unfermented Astragalus, and to the L. Plantarum group containing 2% L. Plantarum (1 × 108 CFU/mL). During the second half of the experimental period (15 to 28 days), the egg production rate was significantly higher in the fermented Astragalus group than that in the other groups, with the fermented Astragalus group having the lowest feed conversion ratio. No significant difference (P > 0.05) was observed among treatments on egg quality. Fermented Astragalus-treated hens exhibited significantly increased catalase (CAT), glutathione peroxidase (GSH-Px), superoxide dismutase (SOD) and total antioxidant capacity (T-AOC) in serum, and reduced malondialdehyde (MDA) in serum. Furthermore, fermented Astragalus supplementation resulted in a significant increase in ileal microbiota abundance relative to control. In conclusion, feeding laying hens with L. Plantarum fermented Astragalus has beneficial effects on production, antioxidant potential, immunity and ileal microbiota. L. Plantarum fermented Astragalus is expected to be a novel feed additive used in poultry production.

scholarly journals Immunomodulatory Effects of Dietary Phosphorus and Calcium in Two Strains of Laying Hens

Animals ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 129
Author(s):  
Tanja Hofmann ◽  
Sonja Schmucker ◽  
Vera Sommerfeld ◽  
Korinna Huber ◽  
Markus Rodehutscord ◽  
...  
Keyword(s):  
T Cells ◽  
Immune System ◽  
Egg Production ◽  
Laying Hens ◽  
Animal Health ◽  
Negative Effects ◽  
Mineral Phosphorus ◽  
Immune Parameters ◽  
Dietary Phosphorus ◽  
The Impact

Insufficient nutrient supply can impair the immune system, which is important for animal health and welfare. Since chicken can partly hydrolyze phytate, which is the primary phosphorus storage in plant seeds, a reduction of mineral phosphorus in the diets could be an option for more sustainable egg production. Laying hens require high concentrations of calcium that might inhibit the function of endogenous enzymes for phytate hydrolyzation. The objective of this study was to characterize the impact of standard and reduced dietary phosphorus and calcium concentrations on the number and functionality of immune cells in the peripheral and gut-associated immune system in a white and brown laying hen strain. Reduced mineral phosphorus enhanced several immune parameters such as B cells in blood and IgA concentrations in bile in both strains, and peripheral monocytes and T cells in cecal tonsils in brown hens. Reduced calcium levels resulted in lower numbers of T cells in blood and cecal tonsils in both strains, suggesting negative effects on adaptive immunity. Differences between the two strains were found in almost all immune parameters. Results suggest a potentially beneficial effect of reduced dietary mineral phosphorus on the immune system that is dependent on the genetic background.

scholarly journals Dietary Addition of Astragalus Fermented by Lactobacillus Plantarum Improved Laying Performance, Egg Quality, Antioxidant and Immunological Status and Intestinal Microbiota in Laying Hens

2020 ◽  
Author(s):  
Hongtao Shi ◽  
Baiyu Wang ◽  
Chuanzhou Bian ◽  
Yingqian Han ◽  
Hongxing Qiao
Keyword(s):  
Lactobacillus Plantarum ◽  
Intestinal Microbiota ◽  
Egg Production ◽  
Laying Hens ◽  
Egg Quality ◽  
Control Group ◽  
Poultry Production ◽  
Immunological Status ◽  
Laying Performance ◽  
Significant Difference

Abstract Background In the era of increased antibiotic resistance and ever stricter control on antibiotic use, it is urgent to develop green, safe and non-residue alternatives to antibiotics applied to the poultry industry. To this end, we supplied the potential Lactobacillus Plantarum (L. Plantarum) fermented Astragalus in the diet of laying hens, with a final addition of 3‰. Its effects have been assessed on laying performance, egg quality, antioxidant and immunological status and intestinal microbiota, and are compared to the control group, to the Astragalus group containing 3‰ unfermented Astragalus, and to the L. Plantarum group containing 2% L. Plantarum (1 × 108 CFU/mL). Results During the second half of the experimental period (15 to 28 days), the egg production rate was significantly higher in the fermented Astragalus group than that in the other groups, with the fermented Astragalus group having the lowest feed conversion ratio. No significant difference (P > 0.05) was observed among treatments on egg quality. Fermented Astragalus-treated hens exhibited significantly increased catalase (CAT), glutathione peroxidase (GSH-Px), superoxide dismutase (SOD) and total antioxidant capacity (T-AOC) in serum, and reduced malondialdehyde (MDA) in serum. Furthermore, fermented Astragalus supplementation resulted in a significant increase in ileal microbiota abundance relative to control. Conclusions Feeding laying hens with L. Plantarum fermented Astragalus has beneficial effects on production, antioxidant potential, immunity and ileal microbiota. L. Plantarum fermented Astragalus is expected to be a novel feed additive used in poultry production.

scholarly journals THE INFLUENCE OF LIQUID CALCIUM SOURCE ON EGGSHELL QUALITY

2019 ◽  
Vol 12 (1) ◽  
pp. 87-96
Author(s):  
Ksenija Nešić ◽  
Nikola Pavlović ◽  
Vladimir Radosavljević ◽  
Miloš Gavrilović
Keyword(s):  
Egg Production ◽  
Laying Hens ◽  
Egg Quality ◽  
Economic Losses ◽  
Significant Difference ◽  
Beneficial Impact ◽  
Calcium Source ◽  
Liquid Calcium ◽  
Production Increase

It is estimated that the world’s population will enlarge by 25% by the middle of this century, resulting in the food production increase by at least 60%. Intensifying egg production is one of the most affordable solutions to provide animal protein. Among many other efforts to improve the quality of eggs, special attention is paid to attempts to provide a better endurance and strength of eggshell, due to the fact that the production of eggs with broken, cracked or soft shells incurs significant economic losses. One of the most important factors to achieve this goal is careful adjustment of calcium in the diet of laying hens, but the nutritional role of calcium is closely linked to that of phosphorus and the effect of vitamin D. The aim of the experiment was to determine whether two different nutritional supplements of calcium, applied in drinking water of laying hens for two weeks have any significant influence on the shell egg quality. Statistically very significant difference in egg production was observed in the treatment with the product containing calcium and phosphorus. On the other hand, the product consisting of calcium and vitamin D3 had no beneficial impact on the egg parameters.  Based on the obtained results and literature data, it can be concluded that the amount and source of calcium in the diet of laying hens is a very complex and not fully solved issue. Therefore, especially keeping in mind the duration of the experiment, additional research is needed on this subject.

scholarly journals Kinerja Produksi dan Kualitas Telur Ayam Petelur yang Diberi Minum Air Gambut dan Air Non Gambut

2020 ◽  
Vol 20 (2) ◽  
Author(s):  
Deni Fitra ◽  
Niken Ulupi ◽  
Irma Isnafia Arief ◽  
Rita Mutia ◽  
Luki Abdullah ◽  
...  
Keyword(s):  
Water Consumption ◽  
Egg Production ◽  
Laying Hens ◽  
Egg Quality ◽  
Production Performance ◽  
Feed Consumption ◽  
Egg Weight ◽  
Significant Difference ◽  
Haugh Unit

ABSTRAK. Penelitian ini bertujuan untuk mengevaluasi kinerja produksi dan kualitas telur ayam petelur yang diberi air gambut (AG) dan air non gambut (ANG). Penelitian ini menggunakan 30 ekor ayam petelur strain lohman brown umur 15 bulan dengan pemberian pakan ransum komersial. Penelitian terdiri dari dua kelompok ayam dengan jumlah masing-masing 15 ekor. Kelompok pertama diberi minum AG dan kelompok kedua diberi ANG. Peubah yang diamati adalah konsumsi air minum, konsumsi ransum, produksi dan massa telur, konversi ransum, bobot telur, indeks putih telur, indeks kuning telur, tebal cangkang telur dan nilai haugh unit. Data penelitian dianalisis dengan uji-t untuk mengetahui perbedaan antar kelompok perlakuan. Hasil penelitian menunjukkan bahwa konsumsi air minum, konsumsi ransum dan konversi ransum secara statistik berbeda nyata. Konsumsi air minum pada perlakuan AG (286,57 ml/ekor/hari) lebih tinggi dari pada perlakuan ANG (264,24 ml/ekor/hari), demikian juga konsumsi ransum (98,82 g/ekor/hari vs 90,10 g/ekor/hari). Sedangkan konversi ransum pada perlakuan AG (2,71) lebih baik dari pada perlakuan ANG (3,18). Pada peubah kualitas telur hanya bobot telur yang menunjukkan perbedaan nyata. Bobot telur pada perlakuan AG (55,85 g/butir) lebih tinggi dari pada perlakuan ANG (54,18 g/butir). Kesimpulan dari penelitian ini adalah pemberian minum dengan AG mampu memperbaiki kinerja produksi ayam petelur, terlihat dari konsumsi air minum, konsumsi dan konversi ransum. Sedangkan pada kualitas telur hanya terlihat dari bobot telur.  (Performance and egg quality of laying hen given peat water and non peat water) ABSTRACT. The aim of this study was to evaluate the performance and egg quality of laying hens given peat water (PW) and non-peat water (NPW). This study used 30 laying hens strain lohman brown aged 15 months with commercial ration feeding. The study consisted of two groups of chickens with 15 chickens each. The first group was given PW and the second group was given NPW. The variables observed were water consumption, feed consumption, egg production and mass, FCR, egg weight, albumin and yolk index, egg shell thickness and haugh unit value. Data obtained were analyzed using t-test to determine the differences between treatment groups. The results showed that water consumption, feed consumption and FCR were statistically difference. The daily water consumption in PW treatment (286.57 ml/bird/day) was higher than in NPW treatment (264.24 ml/bird/day), as was ration consumption (98.82 g/bird/day vs 90.10 g/ bird/day). While the ration conversion in PW treatment (2.71) was better than that of NPW treatment (3.18). In the egg quality variable, only egg weight showed a significant difference. Egg weight in PW treatment (55.85 g/egg) was higher than in NPW treatment (54.18 g/egg). The conclusion of this experiment was the given peat water to laying hens was able to improve the production performance, indicated by water consumption, feed consumption and FCR. Meanwhile, the quality of eggs can only be seen from the egg weight.

scholarly journals Egg Production and Biological Activities in Laying Hens are Affected By Different Molting Programs

2021 ◽  
Vol 910 (1) ◽  
pp. 012092
Author(s):  
Ammar S. Abdulwahid ◽  
Arkan B. Mohammed ◽  
Tareq Al-Jumaliy
Keyword(s):  
Egg Production ◽  
Aluminum Sulfate ◽  
Laying Hens ◽  
Biological Activities ◽  
Feed Consumption ◽  
Egg Mass ◽  
Feed Conversion ◽  
Blood Samples ◽  
Feed Withdrawal ◽  
Significant Difference

Abstract This study was conducted to compare two molting methods by using aluminum sulfate (2.5 g/kg) and diet withdrawal on productivity, eggs quality, and lipid profile of laying hens. A total of 180 Hy-line Brown hens 80 weeks of age were randomly assigned to three replicates of three treatments of 30 hens/treatment from 70–87 weeks of age; hens were exposed to one of the following two molt groups: T1, aluminum sulfate (2.5 g/kg) and T2, feed withdrawal(14 days). Egg production was recorded daily/hen in each cage and weekly for each treatment. Following the forced molting, feed consumption was recorded and calculated weekly. Feed conversion rate as a feed/g egg mass was calculated weekly for each treatment. Haugh unit was determined by [11]. At the end of the experiment blood samples were collected from nine laying hens/treatment from the extrinsic vein using a 5mL sterilized syringe with heparin for biochemical determination parameters. Blood samples were centrifuged at 4000rpm for ten minutes. Plasma and serum were separated and stored (- 20°C) until the biochemical measurement. Cholesterol, Triglycerides, Total Protein, Albumin, Globulin, ALT, and AST were determined in this study. The data were analyzed using (ANOVA) to analyze the difference between treatments. A significant difference was identified between treatments, by using Duncan’s test for multiple comparisons. The results of this study indicated that hens subject to feed withdrawal treatment showed a significant (p < 0.05) percentage of body weight loss compared to those in the feed with aluminum (2.5g/kg). We did not find significant (p>0.05) differences in hens performance for all treatments in the post molt for 56 days. Our data showed hens had significantly lower (p < 0.05) in hen day egg production when compared with other treatments after molting, also, the egg weight showed no significant differences between treatments. The results showed a significant (p<0.05) difference in albumin and globulin between molt methods. Our experiment indicated that aluminum sulfate (2.5 g/kg) and feed withdrawal represent a viable alternative to the molting method for the successful induction of molting and retention of post molt performance.

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