Shell Weight Percentage Research Articles

Effect of Plumage Colour on The Productive and Physiological Performance of Two Lines of Turkey During Egg Production Period

Using 32 hens from two turkey lines; broad-breasted bronze (BBB) and bourbon red (BR), this study assessed how plumage colour affects egg production and physiological functions during (26-40) weeks of observation. A total of 32 hens, namely 16 hens from the BBB line and 16 hens from the BR line, were bred from 26 weeks up to 40 weeks of age. According to our results, BBB line significantly (p≤0.05) outperformed BR line in terms of body weight at first egg production, feed intake, and yolk diameter during the study period. A significantly (p≤0.05) higher feed conversion ratio, an increased egg mass, a higher production rate of hen-day eggs, and a higher rate of albumen was achieved by the BR line. It is, however, noteworthy that the age at first egg production, the egg weight, the egg mass, the yolk weight, the yolk percentage, the albumen weight, the shell weight percentage, the egg shell thickness, width, and length, the shape index, yolk height and yolk index were not significantly (p≥0.05) different between the two lines at 24 and 36 weeks of age. The levels of luteinizing hormone (LH) and follicle-stimulating hormone (FSH) were not significantly (p≥0.05) different between the two lines at 24 and 36 weeks of age when eggs were produced. Both turkey lines presented in the current study can potentially be raised in Iraq, as well as used as hens to produce hatching eggs and for genetic improvement.

A Comparative Study of the Internal and External Quality Characteristics of Table Eggs and the Effect of Storage Periods and Layer Strain on them under Summer Conditions

Background: Eggs are a rich source of protein and a portion of food that satisfies human demands and supplies the body with amino acids, metal elements and vitamins that are beneficial for general health. This research aimed to determine the influence of storage duration and hen breed on the internal and external quality characteristics of brown- and white-shelled eggs under different domestic storage circumstances. Methods: A total of 240 eggs from the two species were randomly selected. They were stored at a humidity of 65% and temperatures of ±1°C for 0, 15 and 30 days. All eggs were cracked to determine the egg coefficient, egg weight, egg weight loss and air chamber depth. Egg-specific density, Haugh unit values, yolk color, the presence of flesh and blood spots, white weight, yolk weight, shell integrity, white weight percentage, percentage of shell weight, yolk weight ratio and yolk weight ratio. Shell thickness, density, cleanliness, surface area and weight relative to shell area. Result: The Haugh unit, specific density, air chamber depth and shell thickness were all significantly (P£0.05) affected by the length of time eggs were stored. It had a favorable influence on shell density and weight for brown and white-shell eggs, but the Huff unit values of the eggs were negatively affected the longer they were stored. This effect was more pronounced the longer the eggs were stored. Due to the difference in shell color and the extended period of storage, there was a major change in all of the components of the egg. This was caused by the storage duration.

Pasta wastes, as substitute for corn, in the laying Japanese quails diet: Effects on production performance, egg quality and blood biochemistry.

Animal food shortage and finding efficient ways to produce poultry products are getting more and more important issues in the world. This study was aimed to determine the effect of replacing corn with pasta wastes (0%, 50% and 100%) in the diet on production performance, some blood variables and the egg quality traits of laying quails. A total of 240 laying quails were allocated into 3 experimental groups with 8 replicates for 8 weeks. Egg production percentage, egg mass, feed intake and also mortality rate and percentage of abnormal eggs, egg quality traits and blood variables were evaluated. None of the pasta wastes inclusion had significant effect on egg mass, abnormal egg percentage, mortality rate, yolk diameter, yolk weight, albumen height, yolk index, shell weight percentage, egg shape index and blood parameters (except for triglycerides). Replacing 100% corn with pasta by-product reduced feed conversion ratio and increased egg weight values. Replacing 100% corn by pasta wastes significantly increased the albumen weight, shell weight and also egg length and width and decreased the Haugh unit. Replacing 50% and 100% corn had a significant increase in yolk height, egg surface area and significantly decreased shell thickness and yolk colour. Overall, 100% replacement of corn by pasta by-product increased blood triglycerides compared to the 50% group. Based on the result of current experiment, total replacement of corn with pasta wastes could increase the egg weight and also improve feed conversion ratio in the laying quail diets.

The Effect of Storage Periods on the Internal and External Quality Characteristics of White and Brown-Shell Table Eggs in Saudi Arabia

Background: The eggs of hens are an essential source of protein, a food that meets human needs and provides the body with amino acids, metallic elements and vitamins that promote its health. The research aims to study the influence of storage period and strain and the interaction between them on components and internal and external quality traits of commercially produced brown and white-shell eggs. Methods: A total of 180 eggs were randomly collected from both types. It was kept for 0, 15 and 30 days at temperatures ranging from 5±2°C to a humidity level of 60%. All eggs were broken to measure the egg coefficient, egg weight, egg weight loss and depth of the air chamber. shell thickness, shell density, shell cleanliness, shell surface area, shell weight relative to shell area unit, egg specific density, Haugh unit values, yolk color, presence of flesh and blood spots, white weight, shell weight, yolk weight, shell integrity, white weight percentage, percentage of shell weight, yolk weight ratio and yolk weight ratio. Result: White eggs weighed more than brown eggs and storage periods had a significant (P less than 0.05) effect on the Haugh unit, specific density, air chamber depth and shell thickness. It has a positive effect on shell density and shell weight for both brown and white-shelled eggs. The storage period also led to a significant increase in weight loss, a significant decrease in white, yolk and shell and significant changes in all parts of the egg because the shell color changed.

EFFECT OF DIETARY SUPPLEMENTATION OF FENNEL SEEDS (FOENICULUM VULGARE) ON IMPROVING EGG QUALITY IN LAYING HENS

The purpose of the study was to examine the impact of adding Fennel seeds (Foeniculum vulgare L.) into the diets of laying hens on egg quality. This study was conducted in poultry fields belonging to Department of Animal Production, College of Agriculture, and University of Anbar for 12 weeks. A total of 72 laying hens (Lohman Brown) were used in this experiment, at age 43 weeks. Hens were randomly distributed to six treatments groups and with four replicates per treatment (3 hens/replicate). The treatments were T1: (positive control) based diet containing 1% hydrogenated vegetable fat, T2: (negative control) based diet containing 1% Sheep fat, T3, T4, T5 and T6 The based diet contained 1% Sheep fat + supplementation of 0.25, 0.50, 0.75 and 1% Fennel seeds powder sequentially. The results showed significant (P≤0.05) differences for the supplementation treatments on the qualitative characteristics of egg quality, as treatment T6 was significantly (P≤0.05) superior to the rest of the experimental treatments in shell weight, yolk weight, yolk index, percentage of Albumen weight %, Albumen weight (g) and Haugh Unit. Treatments T5 and T6 were significantly (P≤0.05) superior to the rest of the experimental treatments in shell thickness, percentage of yolk weight%, and Albumen index, while there was no significant effect (P≤0.05) of the supplementation treatments on (percentage of shell weight%) compared to the two control treatments T1 and T2. It was concluded adding 0.75 and 1% Fennel seeds powder to laying hens' diets improved quality of eggshell, yolk, and egg white.

Effect of Dietary Incorporation of Chili (Capsicum annuum) Leaf Powder on Production Performance and Egg Quality Parameters of Rhode Island Red Laying Hens

The present experiment was planned to ascertain the effect of dietary incorporation of chili (Capsicum annuum) leaf powder on production performance and egg quality parameters of Rhode Island Red laying hens of 28 weeks of age for a period of 12 weeks. Hens were individually weighed and then randomly assigned into four treatment groups with three replicates of 6 birds each viz., T1: (control, containing basal diet); T2: Incorporation of 0.5% chili leaf powder in basal diet; T3: Incorporation of 1.5% chili leaf powder in basal diet; T4: Incorporation of 2.5% chili leaf powder in basal diet. The results indicated that egg production and feed conversion ratio were not significantly affected. However, overall average feed intake significantly (P<0.05) reduced in hens supplemented with 2.5% chili leaf powder. Egg quality parameters viz., egg weight, shape index, shell weight percentage and shell thickness of eggs, egg albumen quality such as albumen height, albumen weight and Haugh unit were statistically similar among all the groups. The egg yolk quality parameters including yolk weight, yolk percentage, yolk index, yolk cholesterol and yolk triglycerides did not differ significantly among different treatment groups, however, egg yolk colour was significantly (P<0.05) improved in T4 group, compared to T1 group. While, egg yolk colour in treatment groups T1, T2 and T3 showed no significant difference. To conclude, supplementation of chilli leaf powder @ 2.5% can be used to improve egg yolk colour.

Effects of increasing concentrations of corn distillers dried grains with solubles on the egg production and internal quality of eggs

A study was conducted to determine the effect of feeding high concentrations of corn distillers dried grains with solubles (DDGS) on egg production and the internal quality of eggs from laying hens. Four diets were formulated to contain 0, 17, 35, or 50% corn DDGS. A total of two hundred forty 54-wk-old Single-Comb White Leghorn laying hens were randomly allotted to 2 birds per cage with 3 consecutive cages representing an experimental unit (EU). Each EU was assigned to 1 of 4 dietary treatments according to a completely randomized design. Hens were fed for a 24-wk experimental period after transition feeding to gradually increase corn DDGS inclusion over a 4-wk period. Two sets of experimental diets were formulated, and each diet was fed for 12 wk. Egg production, feed consumption, egg component, yolk color, Haugh unit during storage times, and shell breaking strength were measured. Egg production, egg weight, egg mass, feed intake, and feed efficiency were adversely affected by the highest level of DDGS in the diet (50%) during the first 12-wk period. Once diets were reformulated to include an increased concentration of both lysine and methionine, differences among the dietary treatments were reduced, as the performance of the 50% DDGS diets was greatly improved. Over the last 6 wk of study, no differences in egg production, egg weight, and feed intake among DDGS treatments were found. The DDGS diets positively affected the internal quality of eggs during storage. Improved yolk color and Haugh unit were observed as the dietary DDGS levels increased, but the increase for Haugh unit was significant only when the DDGS level was 50%. Shell weight percentage was increased in the 50% DDGS diet, but no differences in yolk and albumen percentage were observed. It was concluded that up to 50% of DDGS could be included in the layer's diet without affecting egg weight, feed intake, egg mass, feed efficiency, and egg production as long as digestible amino acids were sufficient in DDGS-added diets.

Níveis de metionina + cistina digestíveis em rações para poedeiras no pico de produção

Avaliaram-se os efeitos de níveis de aminoácidos sulfurados digestíveis (AASD) sobre o desempenho e a qualidade interna e externa de ovos de 360 poedeiras de 25 a 41 semanas de idade. Foram formuladas seis dietas experimentais: cinco continham 0,578; 0,636; 0,694; 0,752 ou 0,810% de AASD, e em uma o nível de AASD foi o usualmente recomendado, cada tratamento com cinco repetições de 12 aves, em quatro períodos de avaliação de 28 dias cada. Melhores resultados para produção de ovos, conversão alimentar, massa de ovos e ovos viáveis foram obtidos com as aves que consumiram 729; 751; 801 e 730mg AASD/dia, respectivamente. A elevação dos níveis de AASD resultou em aumentos lineares no consumo de ração, no ganho de peso, nas porcentagens de gema e no extrato etéreo na gema. Nos ovos armazenados por sete dias, houve aumento linear da porcentagem de gema e decréscimo linear da porcentagem de casca, unidade Haugh e peso específico com a elevação dos níveis de AASD. Conclui-se que, para melhores produção e qualidade interna e externa de ovos, é necessário o consumo de 752mg de AASD ou de 864mg de aminoácidos sulfurados totais por ave/dia.