Effect of Dietary Calcium Sources and Levels on Egg Production and Egg Shell Quality of Japanese Quail

2007 ◽  
Vol 6 (2) ◽  
pp. 131-136 ◽  
Author(s):  
F. Sultana . ◽  
M.S. Islam . ◽  
M.A.R. Howlider .
Keyword(s):  
Japanese Quail ◽  
Egg Production ◽  
Dietary Calcium ◽  
Shell Quality ◽  
Calcium Sources ◽  
Egg Shell

The effect on egg shell quality of supplementing saline drinking water with sodium or ammonium bicarbonate

1990 ◽  
Vol 41 (6) ◽  
pp. 1187 ◽  
Author(s):  
I Yoselewitz ◽  
D Zhang ◽  
D Balnave
Keyword(s):  
Drinking Water ◽  
Egg Production ◽  
Saline Water ◽  
Ammonium Bicarbonate ◽  
Fluid Composition ◽  
Shell Quality ◽  
Egg Shell ◽  
The Town ◽  
Reduced Water

Supplementing the town water supply of laying hens with 600 mg sodium chloride (NaCl)/L significantly decreased egg shell quality and significantly increased the incidence of egg shell defects without affecting egg production and egg weight or food and water intakes. A smaller, but still significant, increase in egg shell defects was also observed with sodium bicarbonate (NHCO3) supplementation of town water. Ammonium bicarbonate (NH4HCO3) supplementation of town water had no significant effect on egg shell defects and, when added to drinking water containing NaCl, significantly reduced the incidence of shell defects. A smaller beneficial effect was observed when NHCO3was added to saline water. Ammonium bicarbonate, when added to saline drinking water at concentrations of 250 and 450 mg/L, reduced water intake, an effect not observed when these same supplements were added to town water. This suggests that the presence of NaCl in the water may affect kidney function so that the use of NH4HCO3may have limited value, especially at higher water salinities. Shell gland fluid composition was influenced less by treatment than by whether or not hens were laying eggs with defective shells.

scholarly journals Effects of Australian strains of infectious bronchitis virus on internal and external quality of hen eggs

2009 ◽  
Vol 49 (2) ◽  
pp. 162 ◽  
Author(s):  
K. K. Chousalkar ◽  
J. R. Roberts
Keyword(s):  
Infectious Bronchitis Virus ◽  
Egg Production ◽  
Internal Quality ◽  
Negative Effects ◽  
External Quality ◽  
Shell Quality ◽  
Infectious Bronchitis ◽  
Egg Shells ◽  
Egg Shell

The effects of two Australian strains of infectious bronchitis virus (IBV-T and N1/88) on the internal and external quality of eggs were studied in unvaccinated Isa Brown hens in full lay. Overall, there was no decline in egg production in either of the infected groups. However, there were some long-lasting negative effects on the egg internal quality of T-infected hens. Negative effects on internal quality in the N1/88-infected group were relatively short term. Yolk colour score was lower only in T-infected hens. Egg shell quality was affected only in terms of loss of egg shell colour. IBV infection resulted in paler egg shells in both the infected groups. Paler egg shells may not be regarded well by consumers. The egg shape index was lower in both infected groups.

Responses in egg shell quality from dietary ascorbic acid supplementation of hens receiving saline drinking water

1992 ◽  
Vol 43 (6) ◽  
pp. 1259 ◽  
Author(s):  
D Balnave ◽  
D Zhang
Keyword(s):  
Ascorbic Acid ◽  
Drinking Water ◽  
Egg Production ◽  
Saline Water ◽  
Daily Basis ◽  
Weight Changes ◽  
Shell Quality ◽  
Egg Shell ◽  
Ascorbic Acid Supplementation

Three experiments were conducted to determine whether the poor shell quality of eggs from hens receiving saline drinking water could be improved by the simultaneous addition of ascorbic acid to the diet. In one experiment, the responses were compared with those of hens receiving ascorbic acid in the drinking water. In this experiment, providing the ascorbic acid in the drinking water on a daily basis was compared with dosing the water on alternate days. The results showed that saline water increased the incidence of egg shell defects without affecting food and water intakes, egg production or egg weight. Changes in a range of shell quality measures mirrored the changes in the incidence of egg shell defects. Supplementation of the diet or drinking water with ascorbic acid prevented the increase in shell defects and the decrease in shell quality. The degree of response to dietary ascorbic acid was dependent on the concentration used, a response similar to that observed previously when the ascorbic acid was added to the drinking water.

scholarly journals Effect of Various Dietary Calcium Sources on the Quality of Egg Shell in Summer

1973 ◽  
Vol 10 (6) ◽  
pp. 232-237
Author(s):  
Shitoshi MITOKU ◽  
Hiroyuki MEKADA ◽  
Jun-ichi OKUMURA ◽  
Hiro-omi YOKOTA
Keyword(s):  
Dietary Calcium ◽  
Calcium Sources ◽  
Egg Shell

scholarly journals Dual-Purpose Poultry in Organic Egg Production and Effects on Egg Quality Parameters

Foods ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 897
Author(s):  
Marianne Hammershøj ◽  
Gitte Hald Kristiansen ◽  
Sanna Steenfeldt
Keyword(s):  
Egg Production ◽  
Egg Quality ◽  
Quality Parameters ◽  
Egg Laying ◽  
High Yield ◽  
Meat Production ◽  
Dual Purpose ◽  
Shell Quality ◽  
Egg Shell ◽  
Genotype A

Egg laying genotypes have been selected for generations due to their high yield and egg quality, resulting in efficient feed utilization and low body weight; hence, they are not suitable for meat production. This imposes an issue for the male layer chicks, which are killed at one day old. Because of ethical and food waste concerns, the search for suitable dual-purpose genotypes in order to avoid euthanasia of male day-old chicks has intensified. The aim of the present study is to evaluate potential dual-purpose genotypes for their egg quality compared to a representative egg laying genotype. Three dual-purpose genotypes with divergent characteristics were evaluated: genotype A represented an experimental crossbreed based on a broiler type male and an egg layer female, genotype B was a pure breed, and genotype C was a crossbreed of a layer type. These were compared to a control genotype D, which was an egg layer. Eggs were collected six times during the period of 21–54 weeks of hen age, i.e., a total of 1080 shell eggs were analyzed. Examined parameters were weights of egg, shell, yolk, and albumen, by calculating their relative proportions. Shell quality was assessed by shell strength, shell stiffness, and shell thickness. Yolk quality was determined as yolk color and inclusions of blood and meat spots, and albumen quality was evaluated in terms of pH and dry matter (DM) content. The egg layer genotype produced the smallest eggs with least blood and meat spot inclusions compared to that produced by the three dual-purpose genotypes. Shell quality was superior for the layer genotype. However, the experimental genotype A laid eggs of comparable shell quality, albumen DM, and yolk weight, but also with the darkest and most red-yellow colored yolk. The two other dual-purpose genotypes produced eggs of low-medium quality. In conclusion, the genotype A could serve as dual-purpose genotype from an egg quality perspective.

Nutritional and environmental factors involved in egg shell quality of laying hens

1992 ◽  
Vol 33 (4) ◽  
pp. 781-794 ◽  
Author(s):  
J. Grizzle ◽  
M. Iheanacho ◽  
A. Saxton ◽  
J. Broaden
Keyword(s):  
Environmental Factors ◽  
Laying Hens ◽  
Shell Quality ◽  
Egg Shell

Assessing the response of hen weight, body composition, feather score, egg quality, and level of excreta nitrogen content to digestible balanced protein intake of laying hens

2018 ◽  
Vol 98 (4) ◽  
pp. 619-630 ◽  
Author(s):  
D. Kumar ◽  
C. Raginski ◽  
K. Schwean-Lardner ◽  
H.L. Classen
Keyword(s):  
Egg Production ◽  
Diet Composition ◽  
Laying Hens ◽  
Egg Quality ◽  
N Content ◽  
Shell Quality ◽  
Randomized Design ◽  
Completely Randomized Design ◽  
Egg Shell ◽  
Level Of Significance

Ideally balanced dietary protein is critical for laying hen egg production and feed efficiency, but also affects other important characteristics. This research was designed to study the nonegg production and feed intake response of Lohmann-LSL Lite hens to 550, 625, 700, 775, and 850 mg d−1 of amino acid balanced digestible lysine (Dlys) from 27 to 66 wk of age. Data collection included hen weight (HW), feather scoring, tissue weights, egg specific gravity, egg component weights, and excreta nitrogen (N) content. The experiment was a completely randomized design and level of significance was fixed at P ≤ 0.05. Hen weight (quadratic, Q), pectoralis muscle (absolute, % – Q), and abdominal fat (absolute – linear, L; % – Q) increased with increasing Dlys intake. Although gastrointestinal segment weights and lengths were affected by Dlys intake, interpretation of results was confounded by other aspects of diet composition. Hen feather score (L) and excreta N content (Q) increased, and egg shell quality (L) decreased with increasing Dlys intake. Absolute egg component weights increased with Dlys intake, but effects on proportional weights were Q and relatively minor. In conclusion, balanced Dlys intake affected a variety of practical nonproduction characteristics in laying hens.

scholarly journals Effects of PCBs, DDT, and Mercury Compounds upon Egg Production, Hatchability and Shell Quality in Chickens and Japanese Quail

1975 ◽  
Vol 54 (2) ◽  
pp. 350-368 ◽  
Author(s):  
M.L. Scott ◽  
J.R. Zimmermann ◽  
Susan Marinsky ◽  
P.A. Mullenhoff ◽  
G.L. Rumsey ◽  
...  
Keyword(s):  
Japanese Quail ◽  
Egg Production ◽  
Shell Quality ◽  
Mercury Compounds
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