Effects of the wood vinegar compound on egg production and egg quality of White Leghorn hens.

Two experiments with nine strains of Single Comb White Leghorn hens were conducted to compare laying house performance of hens given a diet of uniform protein content or a phase-feeding diet in which protein content was reduced from 156 to 148 and then to 140 g/kg at 273 and 414, or 273 and 384 days of age. Performance criteria were egg production, feed and protein intake, egg, quality, egg weight, mortality and body weight. Phase-feeding allowed reductions of 4.2 and 4.3% in protein consumption without reducing egg production, mortality or, except in one strain, body weight. There was an increase of 0.5% in feed consumption, but feed cost was reduced by 1.3%. Phase-feeding increased Haugh units by 0.3% and decreased specific gravity of eggs in one experiment, decreased percent visibly-cracked eggs in the other experiment and had no effect on percent blood spots. Depending on strain, phase-feeding had a variable effect on egg weight in exp. 1 but had no effect in the second experiment. Key words: Phase-feeding, protein utilization, egg production, hen

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Effect of Supplementation of Multi Enzymes on Production Performance and Egg Quality Traits in White Leghorn Layers

THE INDIAN JOURNAL OF VETERINARY SCIENCES AND BIOTECHNOLOGY ◽

10.21887/ijvsbt.v12i2.3730 ◽

2016 ◽

Vol 12 (2) ◽

Author(s):

C. Pandian ◽

A. Sundaresan ◽

A. V. Omprakash

Keyword(s):

Egg Production ◽

Egg Quality ◽

Live Weight ◽

Economic Benefits ◽

Production Performance ◽

Feed Consumption ◽

Quality Traits ◽

White Leghorn ◽

Significant Difference ◽

Enzyme Supplementation

The present study was conducted to assess the effect of supplementation of Multi-enzymes with lysophospholipids on production performance of pure line White Leghorn layers. Body weights before and after the experiment did not differ significantly across the experimental diets. Irrespective of the dietary treatments, the birds gained 3.83 per cent of live weight relative to its initial body weight. Mean per cent Hen housed egg production was significantly (Pis less than 0.05) higher in diet supplemented with 0.10 MEC-L than other groups. Mean egg weight and average daily feed consumption during 25 to 35 weeks of age indicated no significant effect of enzyme supplementation. Average daily feed consumption per bird in control, 0.05 % and 0.1% multi-enzyme supplemented groups was 108.13, 105.66 and 107.67 g respectively and birds offered control diet recorded numerically more feed intake than enzyme supplemented groups. Comparatively low feed per egg was observed in 0.10 per cent group followed by 0.05 per cent group which offers economic benefits than control diets. However, the egg quality traits between different dietary enzyme supplementation groups showed no significant difference.

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Effects on egg production and quality of supplementing drinking water with calcium and magnesium

South African Journal of Animal Science ◽

10.4314/sajas.v51i4.7 ◽

2021 ◽

Vol 51 (4) ◽

pp. 469-476

Author(s):

X.J. Yi ◽

A. Rehman ◽

R.W. Akhtar ◽

A. Abbas ◽

K. Hussain ◽

...

Keyword(s):

Drinking Water ◽

Egg Production ◽

Laying Hens ◽

Egg Quality ◽

Production Performance ◽

Egg Weight ◽

Calcium And Magnesium ◽

Eggshell Colour ◽

Haugh Unit

This study was conducted to appraise the effects on egg quality and production performance of laying hens when drinking water was supplemented with calcium (Ca) and magnesium (Mg). A total of 384 (64-week-old) Hy-line Brown laying hens were assigned at random to four treatments, which consisted of CON: unsupplemented drinking water; T1: drinking water + 2 mg/L Ca + 250 mg/L Mg; T2: drinking water + 4 mg/L Ca + 510 mg/L Mg /10 L; and T3: drinking water + 5 mg/L Ca and 760 mg/L Mg. The experiment lasted six weeks. Water intake increased linearly in week 1 with the rising levels of Ca and Mg in the drinking water. Increasing the Ca and Mg levels improved eggshell strength (week 2 (P =0.01), week 5 (P =0.01), and week 6 (P = 0.03), and eggshell thickness (week 6) (P =0.02) and reduced the rate at which eggs were broken (week 4) (P =0.01). The supplemental Ca and Mg did not affect egg production, egg weight, Haugh unit, albumen height, eggshell colour, and yolk colour compared with CON. Nor did they influence the Haugh unit and albumen height after storing for 1, 5, 10 and 15 days. In conclusion, adding Ca and Mg to the drinking water increased the thickness and strength of the eggshells.

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Effect of Dietary Inclusion of Cassava Yeast as Probiotic Source on Egg Production and Egg Quality of Laying Hens

International Journal of Poultry Science ◽

10.3923/ijps.2009.195.199 ◽

2009 ◽

Vol 8 (2) ◽

pp. 195-199 ◽

Cited By ~ 3

Author(s):

Songsak Chumpawade ◽

Anut Chantirati ◽

Suwannee Sataweesuk

Keyword(s):

Egg Production ◽

Laying Hens ◽

Egg Quality

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Egg Quality. 2. Albumen Quality of Eggs from Five Commercial Strains of White Leghorn Hens During One Year of Lay

Poultry Science ◽

10.3382/ps.0650063 ◽

1986 ◽

Vol 65 (1) ◽

pp. 63-66 ◽

Cited By ~ 10

Author(s):

G. DOYON ◽

M. BERNIER-CARDOU ◽

R.M.G. HAMILTON ◽

F. CASTAIGNE ◽

C.J. RANDALL

Keyword(s):

Egg Quality ◽

White Leghorn ◽

One Year

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STUDIES ON THE USE OF FABA BEANS IN RATIONS FOR LAYING HENS

Canadian Journal of Animal Science ◽

10.4141/cjas77-053 ◽

1977 ◽

Vol 57 (3) ◽

pp. 421-425 ◽

Cited By ~ 11

Author(s):

A. R. ROBBLEE ◽

D. R. CLANDININ ◽

R. T. HARDIN ◽

G. R. MILNE ◽

K. DARLINGTON

Keyword(s):

Egg Production ◽

Egg Size ◽

Production Efficiency ◽

White Leghorn ◽

Feed Conversion ◽

Considerable Decrease ◽

Large Size ◽

Vicia Faba L ◽

Faba Beans

In two experiments, White Leghorn pullets kept in batteries were fed rations containing 0, 5, 10, 15, 20 or 30% raw faba beans (Vicia faba L.) for 336 days. The rations were designed to be isocaloric, isonitrogenous and to have equal levels of methionine plus cystine. The results obtained indicated that levels up to and including 20% faba beans in ration ssupplemented with methionine had no adverse effect on mortality, rate of egg production, efficiency of feed conversion or body weight. A level of 30% faba beans resulted in increased mortality, and decreased egg production and feed conversion in one experiment but had no effect in the other. Egg size tended to decrease as the level of faba beans in the ration increased, resulting in a considerable decrease in the percentage of "large size" eggs graded according to Canadian standards. There was an increase in interior quality of the eggs as measured by Haugh units as the level of faba beans used increased. Specific gravity of the eggs was not affected by use of faba beans in the rations.

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The effect of feeding untreated rapeseed and iodine supplement on egg quality

Czech Journal of Animal Science ◽

10.17221/330-cjas ◽

2008 ◽

Vol 53 (No. 2) ◽

pp. 77-82 ◽

Cited By ~ 7

Author(s):

M. Lichovníková ◽

L. Zeman ◽

J. Jandásek

Keyword(s):

Crude Protein ◽

Egg Production ◽

Egg Quality ◽

Control Diet ◽

Weight Ratio ◽

Egg Weight ◽

Overall Acceptability ◽

Iodine Supplementation ◽

Effect Of Feeding

The objective of the experiment was to evaluate the effect of the feeding of 80 g/kg (R8) and 100 g/kg (R10) of untreated rapeseed (RS) on egg quality including sensory quality in comparison with a control diet without rapeseed (R0). The addition of iodine (I) was also evaluated (1 mg/kg (R10) vs. 3 mg/kg (R10+I)). “Double zero” RS was used. The contents of energy and crude protein were almost the same in the diets. Laying hybrid ISABROWN was used in the experiment. The quality of eggs was analyzed 11 times every 28 days, from 19 to 64 weeks of age. 30 eggs per each group were always analyzed. Boiled eggs were assessed twice around the peak of egg production. Egg weight decreased (P < 0.001) with the increased level of RS (62.9 g, 61.8 g and 60.7 g, respectively). A reduction in egg weight in R8 and R10 diets resulted in the lower weight of albumen and eggshells. The addition of I to R10 diet increased (P < 0.001) egg weight (62.1 g vs. 60.7 g). The yolk proportion in egg weight was the highest (26.0%, P < 0.001) and the albumen weight ratio was the lowest (64.2%, P < 0.001) in group R8. Iodine supplementation improved (P < 0.001) yolk weight (15.7 g vs. 15.3 g). The proportion of RS in the diet did not affect the eggshell strength. An increase in the level of I improved (P < 0.001) eggshell quality (strength 36.1 N vs. 34.0 N and thickness 0.386 mm vs. 0.363 mm). Taste and overall acceptability were lower (P < 0.05) in eggs of hens fed RS. The addition of I did not affect flavour, odour, taste or overall acceptability.

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The effect of dietary phytase and various available phosphorus levels on performance and egg quality in Japanese quail

Revista Brasileira de Saúde e Produção Animal ◽

10.1590/s1519-9940200922019 ◽

2019 ◽

Vol 20 ◽

Author(s):

Rafaella Rossetto ◽

Maurício Barreta ◽

Marcos José Migliorini ◽

Fabíula Pecher ◽

Lenílson Fonseca Roza ◽

...

Keyword(s):

Egg Production ◽

Egg Quality ◽

Quality Parameters ◽

Available Phosphorus ◽

Feed Conversion ◽

Shell Quality ◽

Randomized Experimental Design ◽

Phytic Phosphorus ◽

Phosphorus Levels

SUMMARY Birds show poor utilization of phytic phosphorus in their diets because of the lack of endogenous enzymes to digest phosphorus and make it bioavailable. Therefore, the objective of this study was to evaluate phytase supplementation in the diets of laying quails. Eighty quails were used in a completely randomized experimental design with five treatments and four replicates of four birds each. The treatments were as follows: 0.35% Pd; 0.20% Pd; 0.20% Pd + 500FTUs of phytase; 0.09% Pd; 0.09% Pd + 500 FTUs of phytase. The birds were housed in metallic batteries during a trial period of 21 days, for evaluation of egg production, egg weight, feed intake and feed conversion. After being collected, the eggs were sent to the nutrition laboratory of the department of zootechnics of the CEO/Udesc, where analyses of albumin, yolk and shell quality were performed. The results were subjected to analysis of variance, and the differences between the averages were compared using the Tukey test at 5% of significance. No differences (P> 0.05) were observed in terms of performance and egg quality parameters. We conclude that the inclusion of phytase in the diet of laying quails can be accomplished without compromising the performance and quality of the eggs. Additionally, 0.09% of 22 disponible phosphorus can be used to grant adequate performance for 21 days.

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