Performance, egg quality and resilience to nutritional challenges of Lohmann Dual hens as opposed to layer and traditional dual-purpose types: a preliminary study

2020 ◽  
Author(s):  
I.D.M. Gangnat* ◽  
S. Mueller ◽  
R.E. Messikommer ◽  
M. Kreuzer
Keyword(s):  
Egg Quality ◽  
Dual Purpose ◽  
Preliminary Study

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.

scholarly journals Effect of inorganic or organic selenium supplementation on productive performance, egg quality and some physiological traits of dual-purpose breeding hens

2010 ◽  
Vol 55 (No. 11) ◽  
pp. 505-519 ◽  
Author(s):  
Attia YA ◽  
Abdala AA ◽  
Zewei HS ◽  
F. Bover ◽  
El-Din AA Tag ◽  
...  
Keyword(s):  
Egg Production ◽  
Egg Quality ◽  
Plasma Cholesterol ◽  
Total Concentration ◽  
Control Diet ◽  
Health Benefit ◽  
Cholesterol Concentration ◽  
Egg Mass ◽  
Dual Purpose ◽  
High Level

One hundred and twenty (100♀ + 20♂) 30-weeks-old dual-purpose breeding hens of Gimmizah strain were housed in individual cages in a semi-open house. Birds were distributed randomly into five treatments of 20♀ + 4♂. The 1st treatment was fed a control (unsupplemented) diet (17.5% CP and 11.4 MJ per kg diet) containing 0.10 mg Se/kg (low level). The 2nd, 3rd, 4th and 5th treatments were fed the control diet supplemented with 0.15 and 0.30 mg Se/kg from inorganic (sodium selenite) and organic (selenomethionine, as Se-yeast Selplex® Alltech, Nicholasville, USA) sources, respectively. The total concentration of Se in experimental diets was 0.25 (medium level) and 0.40 ppm (high level). Feed and water were provided ad libitum throughout the experimental period (30–50 weeks of age). Different Se levels of the organic and inorganic form and their interaction did not significantly (P > 0.05) affect egg production percentage, and most of egg quality traits. Egg weight and egg mass significantly (P < 0.002) increased and the feed conversion ratio (FCR) significantly (P < 0.04) improved due to Se supplementation compared with hens fed the control diet. Piped embryos and spleen percentage significantly (P < 0.05) decreased due to Se supplementation. In addition, the level of organic and inorganic Se and their interaction significantly (P < 0.0001) decreased the plasma cholesterol concentration. Tibia Ca and P percentages and yolk selenium concentration significantly (P < 0.03; P < 0.0001 and P < 0.0001, respectively) increased due to Se supplementation and the greatest increase was recorded by a group fed diet with the high level (0.40) of organic Se. The duodenal and intestinal mucosa of the ileum was negatively affected by the high level of inorganic Se while chickens fed the organic form showed less toxic effects in hepatic and splenic tissues than those receiving the inorganic form. In conclusion, the organic and inorganic Se supplementation at 0.15 and 0.30 mg/kg diet, which corresponded to a dietary level of 0.25 and 0.40 mg/kg diet, improved the productive and reproductive performance of Gimmizah breeding hens. A decrease in plasma total cholesterol and an improvement in the bone mineralization were observed. The level of 0.25 mg/kg diet of organic Se was adequate to enrich eggs, which may be recommended for practical application and which would improve the consumer health benefit.

Genetic impact on external and internal egg quality traits of Vanaraja and Gramapriya birds and their crosses in Bihar

2017 ◽  
Author(s):  
Beena Sinha ◽  
K. G. Mandal ◽  
Ragini Kumari ◽  
Anjali Kumari ◽  
D. S. Gonge
Keyword(s):  
Egg Quality ◽  
Random Mating ◽  
Genetic Effect ◽  
Quality Traits ◽  
Shell Weight ◽  
Dual Purpose ◽  
Nutritional Security ◽  
Genetic Groups ◽  
Genetic Impact ◽  
Poultry Farming

Poultry farming is gaining strength in mitigating livelihood and nutritional security to the poor farmers which constitute 60% of the India’s population. Thus eggs of superior quality is prerequisite for profitable marketing and for hatchability too. The present study was conducted on two improved varieties, Vanaraja (dual purpose type) and Gramapriya (the layer type) chicken developed at PDP, Hyderabad and their crosses on random mating. The genetic groups taken were Gramapriya (male) x Gramapriya (female),Vanaraja(male) x Vanaraja(female), Gramapriya(male) x Vanaraja(female)and Vanaraja (male) x Gramapriya(female). 6 males and 30 females were taken from each genetic group and maintained separately under deep litter system with a mating ratio of 1 male : 5 females. To study the genetic effect on external and internal egg quality traits, a total of more than 50 eggs were collected at random from each of 4 genetic groups upto 28 weeks of age. The average shell thickness obtained to be ranged from 0.36 to 0.39 mm. The average albumen and yolk indices were found to be ranged from 7.396 to 8.656 and 41.749 to 43.888 respectively. The average shell weight and percentage of shell weight observed to be ranged from 4.147 to 5.627 g and 17.266 to 18.003% respectively.

scholarly journals Effect of inorganic or organic selenium supplementation on productive performance, egg quality and some physiological traits of dual-purpose breeding hens

2010 ◽  
Vol 55 (No. 1) ◽  
pp. 505-519 ◽  
Author(s):  
Y.A. Attia ◽  
A.A. Abdalah ◽  
H.S. Zeweil ◽  
F. Bovera ◽  
A.A. Tag El-Din ◽  
...  
Keyword(s):  
Egg Production ◽  
Egg Quality ◽  
Plasma Cholesterol ◽  
Total Concentration ◽  
Control Diet ◽  
Health Benefit ◽  
Cholesterol Concentration ◽  
Egg Mass ◽  
Dual Purpose ◽  
High Level

One hundred and twenty (100♀ + 20♂) 30-weeks-old dual-purpose breeding hens of Gimmizah strain were housed in individual cages in a semi-open house. Birds were distributed randomly into five treatments of 20♀ + 4♂. The 1st treatment was fed a control (unsupplemented) diet (17.5% CP and 11.4 MJ per kg diet) containing 0.10 mg Se/kg (low level). The 2nd, 3rd, 4th and 5th treatments were fed the control diet supplemented with 0.15 and 0.30 mg Se/kg from inorganic (sodium selenite) and organic (selenomethionine, as Se-yeast Selplex® Alltech, Nicholasville, USA) sources, respectively. The total concentration of Se in experimental diets was 0.25 (medium level) and 0.40 ppm (high level). Feed and water were provided ad libitum throughout the experimental period (30–50 weeks of age). Different Se levels of the organic and inorganic form and their interaction did not significantly (P > 0.05) affect egg production percentage, and most of egg quality traits. Egg weight and egg mass significantly (P < 0.002) increased and the feed conversion ratio (FCR) significantly (P < 0.04) improved due to Se supplementation compared with hens fed the control diet. Piped embryos and spleen percentage significantly (P < 0.05) decreased due to Se supplementation. In addition, the level of organic and inorganic Se and their interaction significantly (P < 0.0001) decreased the plasma cholesterol concentration. Tibia Ca and P percentages and yolk selenium concentration significantly (P < 0.03; P < 0.0001 and P < 0.0001, respectively) increased due to Se supplementation and the greatest increase was recorded by a group fed diet with the high level (0.40) of organic Se. The duodenal and intestinal mucosa of the ileum was negatively affected by the high level of inorganic Se while chickens fed the organic form showed less toxic effects in hepatic and splenic tissues than those receiving the inorganic form. In conclusion, the organic and inorganic Se supplementation at 0.15 and 0.30 mg/kg diet, which corresponded to a dietary level of 0.25 and 0.40 mg/kg diet, improved the productive and reproductive performance of Gimmizah breeding hens. A decrease in plasma total cholesterol and an improvement in the bone mineralization were observed. The level of 0.25 mg/kg diet of organic Se was adequate to enrich eggs, which may be recommended for practical application and which would improve the consumer health benefit.

scholarly journals Albumen Quality of Fresh and Stored Table Eggs: Hen Genotype as a Further Chance for Consumer Choice

Animals ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 135
Author(s):  
Chiara Rizzi
Keyword(s):  
Environmental Conditions ◽  
Consumer Choice ◽  
Storage Time ◽  
Egg Quality ◽  
Shape Index ◽  
Egg Mass ◽  
Eggshell Thickness ◽  
Dual Purpose ◽  
Commercial Feed

The quality of fresh (1 d) and stored (7–14–21 d, 21 °C) eggs was studied in Italian dual-purpose breeds (Ermellinata di Rovigo (ER), Robusta maculata (RM)) and hybrids (Hy-Line Brown (HB), Hy-Line White36 (HW)), reared outdoors (4 m2/bird) and fed commercial feed. The eggs were analyzed at 4 ages, throughout different seasonal environmental conditions, from summer (31, 35 weeks; 25 °C) until autumn (39, 43 weeks, 15 °C). Each genotype showed significant (p < 0.01) changes in egg quality. In 1 d eggs, the eggshell thickness changed in RM and HW (quadratic), decreased linearly in ER; Haugh Units (HU) changed (ER–cubic) and decreased (hybrids-linear). In 7 d and 14 d eggs, HU linearly (p < 0.01) decreased, except in RM. In 21 d eggs, HU (ER linear decrease; HB, HW quadratic) changed. Significant negative correlations between albumen pH and height were seen in ER (at 1 d, 14 d, 21 d) and HW (at each storage time) eggs, and in RM and HB only in 1 d eggs. RM showed a quite stable albumen quality and a lower total egg mass than ER which showed a more variable albumen quality, due also to a lower eggshell thickness and shape index. The hybrids produced a higher total egg mass than the purebreds and showed an intermediate variation of the egg quality, with an albumen quality higher than those of ER and RM only in 1 d egg, as a result of a higher albumen weight.

scholarly journals Produksi Telur dan Kualitas Telur Ayam IPB D-1 G7 serta Pendugaan Nilai Ripitabilitasny

2020 ◽  
Vol 8 (2) ◽  
pp. 97-101
Author(s):  
R. Habiburahman ◽  
S. Darwati ◽  
C. Sumantri ◽  
Rukmiasih
Keyword(s):  
Egg Production ◽  
Egg Quality ◽  
Maintenance Management ◽  
Quality Data ◽  
Dual Purpose ◽  
Unit Value ◽  
Parent Stock ◽  
Chicken Eggs ◽  
Haugh Unit

IPB-D1 is a chicken cross between male F1 PS (PelungxSentul) with F1 female (Kampung x parent stock cobb). The establishment of chicken IPB-D1 aims to produce commercial meat type local chicken with semi-intensive maintenance management. The aim of this research to observe study assesses the performance of egg production and the quality of IPB D-1 chicken eggs and estimates the value of repeatability of production and haugh units of IPB D-1 chicken eggs. The chicken was observed as many as 30 hens IPB D-1 G7 aged 24-36 weeks and eggs as many as 288 eggs. The production and egg quality data were analyzed descriptively and the repeatability values were analyzed with Anova. Egg weight 40 g, Haugh unit value 87 (Very good), egg production 49.22%. The repeatability value of egg production is 0.2 (Moderate) and the repeatability value of the haugh unit is 0.31 (Medium). IPB D-1 Chicken has the potential to be a good dual-purpose chicken.

Dual purpose laser ablation-inductively coupled plasma mass spectrometry for pulsed laser deposition and diagnostics of thin film fabrication: Preliminary study

Talanta ◽  
2009 ◽  
Vol 79 (3) ◽  
pp. 583-589 ◽  
Author(s):  
Mersida Janeva Azdejković ◽  
Johannes Teun van Elteren ◽  
Kristina Žužek Rožman ◽  
Radojko Jaćimović ◽  
Evangelia Sarantopoulou ◽  
...  
Keyword(s):  
Thin Film ◽  
Inductively Coupled Plasma ◽  
Pulsed Laser ◽  
Laser Deposition ◽  
Dual Purpose ◽  
Inductively Coupled ◽  
Thin Film Fabrication ◽  
Plasma Mass Spectrometry ◽  
Preliminary Study ◽  
Film Fabrication
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