scholarly journals Performance and egg quality parameters of laying hens submitted to different rearing densities

2017 ◽  
Vol 38 (2) ◽  
pp. 831 ◽  
Author(s):  
Lidiane Silva Espírito Santo ◽  
Gerusa Silva Salles Correa ◽  
Flávio Medeiros Vieites ◽  
Alessandra Romani ◽  
João Marcos Novais Tavares ◽  
...  
Keyword(s):  
Growth Phase ◽  
Laying Hens ◽  
Polynomial Regression ◽  
Egg Quality ◽  
Test Body ◽  
Quality Parameters ◽  
Egg Mass ◽  
Daily Production ◽  
Randomized Design ◽  
Production Period

This study aimed to evaluate the effect of different rearing densities during brooding (0 to 2 weeks) and growth (3 to 15 weeks) on performance and egg quality of laying hens (Hy-line W-36) during production phase (18 to 42 weeks). In the brooding phase, a total of 3250 day-old chicks were allocated in wire cages, distributed in a completely randomized design composed of 5 treatments (63.57; 66.38; 69.44; 72.80 and 76.50 cm²/bird) with 10 replications each. At the beginning of the growth phase, floor space in each treatment was increased. Therefore, a total of 750 birds were selected from the original treatments, which represented 237.57, 265.52, 300.92, 347.22, and 410.35 cm²/bird. At the end of the growing phase, 390 pullets were transferred to production facilities and distributed, according to their original treatment, in conventional cages with 430.76 cm²/bird (13 birds/cage). For this phase, only 6 replications per treatment were adopted. Experimental data were subjected to analysis of variance and, in the case of significant differences, means were analyzed using polynomial regression test. Body weight, weight gain and uniformity were compared during the brooding and growth phases. First-egg weight, age at first egg, age at 50% daily production, weights of egg, albumen, yolk and shell, egg mass, yolk diameter, yolk height, yolk index, albumen height, percentages of shell, albumen and yolk, shell thickness, Haugh unit, and egg specific gravity were analyzed during the production stage. In conclusion, raising pullets on 63.57 cm2/bird (71 birds/cage) does not affect chicks’ performance during the brooding phase. However, for the growth phase, the recommendation is to provide 410.35 cm2/bird, which corresponded to 11 birds/cage in this research. For the production period, the recommendation is to utilize pullets raised on 265.52 cm2/bird, which corresponded to 17 birds/cage on this research.

scholarly journals Phytase and protease supplementation for laying hens in peak egg production

2016 ◽  
Vol 37 (6) ◽  
pp. 4285
Author(s):  
Bruno Serpa Vieira ◽  
Silvana Alves Pedrozo Vitalino Barbosa ◽  
João Marcos Novais Tavares ◽  
Inês Gameiro Colvara Beloli ◽  
Guilherme Moreira de Mello Silva ◽  
...  
Keyword(s):  
Intestinal Mucosa ◽  
Egg Production ◽  
Laying Hens ◽  
Egg Quality ◽  
Positive Control ◽  
Quality Parameters ◽  
Egg Mass ◽  
Feed Conversion ◽  
Randomized Design ◽  
Negative Controls

The effects of the combination of enzymes in commercial laying hens need to be more explored in literature. To determine if the type of protease affects performance, egg quality, nutrient intake, and morphometry of intestinal mucosa of laying hens in peak egg production and fed with phytase, 780 25-weeks Hy-Line W36 hens were assigned to a completely randomized design composed of five treatments/diets (one positive control, two negative controls, and negative controls plus protease A or B), with 12 replicates of 13 birds each. There was no effect of treatments (P > 0.05) on egg production, egg mass and feed conversion, even though the nutritional restriction imposed by the negative controls reduced egg weight (P = 0.02), albumen height (P < 0.01), and Haugh unit (P < 0.01). Although inclusion of proteases in negative controls did not cause the calculated intake of protein and amino acids to return to the same amount consumed by positive-control hens, egg quality parameters returned to positive control standards with protease A. Intestinal mucosa responded to treatment only at jejunum, where birds fed with protease B showed greater (P < 0.01) villus height and crypt depth than those treated with protease A. These findings suggest that different proteases and phytases interact distinctly and, in consequence, induce different responses on the birds. Moreover, the behavior of egg quality parameters after protease A inclusion in the diet indicates that the nutritional contribution of the combination of this protease with phytase is greater than the contribution of protease alone.

scholarly journals Fish by-product meal in diets for commercial laying hens

2017 ◽  
Vol 39 (3) ◽  
pp. 273
Author(s):  
André Ferreira Silva ◽  
Frank George Guimarães Cruz ◽  
João Paulo Ferreira Rufino ◽  
Waldo Mateus Plácido Miller ◽  
Nathália Siqueira Flor ◽  
...  
Keyword(s):  
Production Cost ◽  
Egg Production ◽  
Laying Hens ◽  
Polynomial Regression ◽  
Egg Quality ◽  
Feed Conversion ◽  
Egg Weight ◽  
Feed Cost ◽  
Randomized Design ◽  
Completely Randomized Design

 This study aimed to evaluate the increasing levels (0, 1, 2, 3 e 4%) of fish by-product meal in diets for laying hens on performance, egg quality and economic analysis. A total of 160 Dekalb White hens with 52-wk old were distributed in a completely randomized design with five treatments and four replicates of eight birds each. The experiment lasted 84 days divided into four periods of 21 days. Estimates of fish by-product meal levels were determined by polynomial regression. Differences (p < 0.05) were detected for all variables of performance, in egg weight, yolk and albumen percentage, yolk and albumen height, feed cost and production cost, in which the inclusion of fish by-product meal in the diets showed better results. It can be concluded that fish by-product meal can be used in diets for hens as alternative feed, with better results in egg production, feed conversion, egg weight, yolk-albumen ratio and a reduction in feed cost and production cost. 

scholarly journals The effect of additional turmeric flour in rations on the performance and egg quality of laying chicken isa brown strain age 70th weeks

2021 ◽  
Vol 888 (1) ◽  
pp. 012054
Author(s):  
A Jaelani ◽  
N Abelina ◽  
R Samudera ◽  
T Rostini ◽  
Masganti ◽  
...  
Keyword(s):  
Research Method ◽  
Laying Hens ◽  
Egg Quality ◽  
Egg Mass ◽  
Feed Conversion ◽  
Unit Value ◽  
Randomized Design ◽  
Completely Randomized Design ◽  
Haugh Unit

Abstract This research aims to study and analyze the effect of adding turmeric flour (Curcuma domestica Val) in the rations on the performance of 70 weeks old Isa Brown strain of laying hens. The research method used in this study was an experimental method with a completely randomized design (CRD) step with five treatments and four replications. The number of chickens used was as many as 40 laying hens. The treatments given to the sample were P0 = feed without giving turmeric flour (control), P1 = feed with 0.3% turmeric flour, P2 = feed with 0.5% turmeric flour, P3 = feed with 0.7% turmeric flour and treatment P4 = feed by giving turmeric flour 0,9%. The results showed that giving turmeric flour in the rations of the Isa Brown strain of laying hens affected chicken performance and egg quality. This research concludes that giving turmeric flour a percentage of 0.7% in Isa Brown’s 70-week old laying hens is the best for ration consumption, Hen Day Production, egg weight, feed conversion, and egg quality: Haught Unit, yolk egg color, yolk egg index, grading egg and egg mass. Based on the haugh unit value, all eggs produced are still in the AA grade category

scholarly journals Paprika and/or marigold extracts in diets for laying hens

2017 ◽  
Vol 18 (2) ◽  
pp. 293-302 ◽  
Author(s):  
Maria Cristina de OLIVEIRA ◽  
Wanessa Dutra da SILVA ◽  
Higor Castro OLIVEIRA ◽  
Eduardo de Queiroz Barros MOREIRA ◽  
Larissa de Oliveira FERREIRA ◽  
...  
Keyword(s):  
Laying Hens ◽  
Egg Quality ◽  
Specific Weight ◽  
Control Treatment ◽  
Control Group ◽  
Egg Mass ◽  
Randomized Design ◽  
Completely Randomized Design ◽  
Haugh Unit

SUMMARY This study was performed to evaluate the effect of the inclusion of paprika and marigold extracts in sorghum-based rations on the productivity and egg quality of laying hens. One hundred sixty laying hens were distributed in a completely randomized design in five treatments and in a factorial arrangement (2 × 2 + 1), one control ration based on corn, two levels of paprika extract (0 and 6 g/kg diet), and two levels of marigold extract (0 and 1 g/kg diet) in sorghum-based rations. There was no effect (P > 0.05) of the treatments on the weight, specific weight, and Haugh unit of the eggs and productive performance, but the inclusion of paprika extract resulted in eggs with lower egg pH. The interaction between the control group and the factorial was significant (P < 0.05) to the laying rate, egg mass, and yolk color, whose values were lower with sorghum-based diets with no pigment compared to control treatment. The interaction between the paprika and marigold extracts was significant increasing the height (P < 0.03) and color (P < 0.0001) of the yolk when paprika extract was used, with or without marigold extract. Marigold extract inclusion reduced the percentage (P < 0.02) and thickness (P < 0.01) of the eggshell. As conclusion, the inclusion of paprika extract in sorghum-based diets for laying hens is viable for improving the egg quality.

scholarly journals A by-product of pinto beans in diets for quail in the laying phase

2020 ◽  
Vol 42 ◽  
pp. e48883
Author(s):  
Gisele Maria Nunes Vieira ◽  
Adriana Aparecida Pereira ◽  
Dirceu Neutzling Griep Júnior ◽  
Wilson Araújo da Silva ◽  
Samila Santos Viana ◽  
...  
Keyword(s):  
Japanese Quail ◽  
Egg Quality ◽  
Quality Parameters ◽  
Egg Laying ◽  
Egg Mass ◽  
Feed Conversion ◽  
Randomized Design ◽  
Final Weight ◽  
Completely Randomized Design ◽  
Pinto Beans

The aim of this study was to evaluate levels of inclusion of pinto beans in diets for quail in the laying phase on their performance and egg quality. A total of 280 Japanese quail in the laying phase were distributed into five treatments in a completely randomized design with eight replicates and seven birds per plot. Treatments consisted of five levels (0, 2, 4, 6, and 8%) of inclusion of pinto beans in the diets, which remained isoenergetic and isoproteic. The experiment began with the quail at 70 days of age and lasted 63 days, with their performance assessed every 21 days and egg-quality parameters on the last two days of each cycle. The following parameters were evaluated: final weight, feed intake, egg-laying rate, feed conversion (per dozen eggs and per egg mass), egg weight, eggshell thickness, specific gravity, yolk color, and weights of shell, yolk, and albumen. No difference was detected between the bean inclusion levels for any of the performance and egg-quality traits assessed or the birds' final weight. In conclusion, up to 8% raw pinto beans may be added in diets for Japanese quail in the laying phase without compromising their performance or internal-external egg quality.

Egg quality and production performance of laying hens injected with growth hormone and testosterone in the late phase of production

2016 ◽  
Vol 56 (1) ◽  
pp. 147
Author(s):  
H. Mohammadi ◽  
Z. Ansari-Pirsaraei ◽  
S. N. Mousavi ◽  
M. Bouyeh ◽  
A. Gholibeikifard ◽  
...  
Keyword(s):  
Growth Hormone ◽  
Egg Production ◽  
Laying Hens ◽  
Egg Quality ◽  
Quality Parameters ◽  
Production Performance ◽  
Fixed Dose ◽  
Control Group ◽  
Egg Mass ◽  
Positive Effects

In this study, 160 73-week-old laying hens (HyLine W-36) were used to investigate the changes in production performance and egg quality parameters of aged laying hens after injection of different doses of growth hormone (GH) and a fixed dose of testosterone (Ts). The hens were weighed individually, placed in laying cages and then randomly assigned to four treatments with four replicates of 10 birds each, in a completely randomised design. The experiment was started at the 75th week and lasted until the 82nd week of age. The treatments were: 1: injection of 100 µL distilled water (control group), 2: injection of 500 µg Ts/kg liveweight + 50 µg GH/kg liveweight, 3: injection of 500 µg Ts/kg liveweight + 100 µg GH/kg liveweight and 4: injection of 500 µg Ts/kg liveweight + 150 µg GH/kg liveweight. In this study, ovulation rate (egg production percent), egg mass and feed intake were significantly higher in Treatment 3 than the control group (P < 0.05), and in Treatment 4, feed conversion ratio was significantly higher than for the other experimental groups (P < 0.05). In addition, the birds in Treatment 3 showed greater egg weight, albumen height, eggshell weight, eggshell density and eggshell weight per surface area than the control group (P < 0.05). In Treatment 3, egg length significantly increased compared with Treatments 1 and 4 (P < 0.05), and in Treatments 2 and 4, shell breaking strength was significantly lower than for the control group (P < 0.05). In conclusion, our results showed positive effects of GH and Ts administration on egg quality parameters and production performance in aged laying hens. Taken together, in the present study Treatment 3 was found more effective in improving egg quality and production performance of the old laying hens.

scholarly journals Effect of Supplementation ARA (Arachidonic acid) Oil on Production Performance, Egg quality and Fatty Acid Composition in Laying Hens

2021 ◽  
Vol 2 (4) ◽  
pp. 1164-1174
Author(s):  
Dian Rizki Purba ◽  
Xiao-guang Dong ◽  
Jing Wang ◽  
Hai-jun Zhang ◽  
Guang-hai Qi ◽  
...  
Keyword(s):  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Acid Composition ◽  
Egg Production ◽  
Laying Hens ◽  
Infant Nutrition ◽  
Egg Quality ◽  
Quality Parameters ◽  
Production Performance ◽  
Egg Mass

The effect of supplementation ARA oil on production performance, egg quality, fatty acid composition in laying hens were examined on this study. The aims on this study to producing ARA enriched eggs to meet infant nutrition requirements. A total of 450 Roman White laying hens with a similar egg production rate and good body condition at 55 weeks of age were randomly divided into 5 treatments. Each treatment was replicated 6 times with 15 hens per replicate.  Hens were fed basal diets with 0, 2,5%, 1,25%, 0,625%, and 0,3125% ARA oil addition. The supplementation ARA oil was effect to decreased egg production, egg weight, egg mass, daily feed intake and FCR (P<0.05) during 9-12 week, but on egg quality parameters showed slightly changed during the 1-12 week but not consistency and that change was not statistically significant. Arachidonate acid (ARA) was increased by supplementation ARA oil (P<0.05). This effect was detected in directly proportional to the addition of ARA oil on diet. This is opposite effect to DHA, DHA was decreased by supplementation ARA oil (P<0.05) and also effect to ratio ARA/DHA was increased (P<0.05) by supplementation ARA oil.

scholarly journals Dietary Supplementation of Increasing Levels of DLMethionine and L-Lysine in Hypoproteic Diets for Laying Hens Improves Productivity and Egg Quality

2015 ◽  
Vol 12 (1) ◽  
pp. 7 ◽  
Author(s):  
Yordan Martínez-Aguilar ◽  
Román Rodríguez-Bertot ◽  
Cesar Betancur-Hurtado ◽  
Dairon Más-Toro ◽  
Carlos Olmo-González ◽  
...  
Keyword(s):  
Laying Hens ◽  
Egg Quality ◽  
Control Diet ◽  
Dietary Supplementation ◽  
Essential Amino Acids ◽  
Quality Parameters ◽  
Amino Acid Supplementation ◽  
Peak Period ◽  
Randomized Design ◽  
Mass Conversion

<p>To evaluate the effect of dietary supplementation of DL-methionine and L-lysine in hypoprotein diets on productivity and egg quality, a total of 240 White Leghorn laying hens (Hybrid L-33) of 26 weeks during laying peak period were placed for 49 days, according to completely randomized design with four treatments and 10 repetitions. Dietary treatments consisted of a control diet (no amino acid supplementation) (T0) and supplementation of 0.03% DL-Met and 0.04% L-Lys (T1); 0.06% DL-Met and 0.08% L-Lys (T2) and 0.09% DL-Met and 0.12% L-Lys (T3). At 26 and 33 weeks of age, 30 eggs per treatment were collected to determine internal and external egg quality parameters.</p><p>The experiment diets did not affect the viability and feed intake. Supplementation of essential amino acids, especially the T3 improved egg weight (54.30 to 58.30 g), laying rate (76.89 to 85.45%) and mass conversion (2.52 to 2.11 kg/kg) (P&lt;0.05). At 33 week, the albumin height (7.21 to 8.23 mm), Haugh units (86.70 to 91.15) (P&lt;0.05) and shell surface (67.10 to 69.20 cm2) increased by the effect of supplementation of DL-Met and L-Lys. The results allow recommending the dietary supplementation of 0.09% DL-Met and 0.12% L-Lys in hypoprotein diets to improve productivity and egg quality in laying hens.</p>

scholarly journals CORN WITH DIFFERENT PARTICLE SIZES IN LAYING HENS FEEDING: PERFORMANCE, EGG QUALITY AND INTESTINAL MORPHOLOGY

2020 ◽  
Vol 23 (1cont) ◽  
Author(s):  
Elis Regina de Moraes Garcia ◽  
Flavia Kleszcz da Cruz ◽  
Diovani Paiano ◽  
Jovanir Inês Muller Fernandes ◽  
Luciana Kazue Otutumi ◽  
...  
Keyword(s):  
Particle Size ◽  
Laying Hens ◽  
Egg Quality ◽  
Intestinal Morphology ◽  
Feed Consumption ◽  
Experimental Unit ◽  
Egg Mass ◽  
Randomized Design ◽  
Morphometry Analysis ◽  
Intestinal Morphometry

This work was carried out to evaluate the effect of different particle size corn on the performance, egg quality and intestinal morphology of Hisex Brown laying hens. A total of 128 birds were used, in a completely randomized design with four treatments, four replicates and eight birds per experimental unit. Experimental rations had corn with different particle size: 565, 620, 781 and 1085 μm of mean geometric diameter (MGD). Feeding was ad libitum at 8:00 am and 4:00 p.m. The variables analyzed were: feed consumption, laying percentage, egg mass and weight, food conversion (was calculated by dividing the feed consumed by the total egg weight (kg.kg-1) and the number of eggs produced (kg.dozen-1)), shell percentage and thickness, Haugh unit, yolk color index and morphometry analysis of the intestinal mucosa. The use of corn with MGD until to 1085 μm in rations does not affect the performance and eggs quality of Hisex Bronw laying hens. However, there are indications that the intestinal morphometry of laying hens is negatively influenced by the increase in particle size of corn.

scholarly journals Pequi peel meal in laying hen diet

2016 ◽  
Vol 38 (2) ◽  
pp. 151 ◽  
Author(s):  
Amanda Lapa Silva ◽  
Romênia Regina Pires Lage ◽  
Daniel Emygdio de Faria Filho ◽  
Izabela Lorena Azevedo ◽  
Adélio Nunes Dias ◽  
...  
Keyword(s):  
Egg Production ◽  
Laying Hens ◽  
Egg Quality ◽  
Egg Yolk ◽  
Laying Hen ◽  
The Other ◽  
Egg Mass ◽  
Feed Conversion ◽  
Randomized Design ◽  
Completely Randomized Design

This study evaluated the effect of pequi peel meal in the diet for laying hens on performance and egg quality. Hy-Line® Brown hens (n=160) aged 55 weeks with 1642±63g body weight were distributed in a completely randomized design with five treatments and four replications of eight birds each. The treatments consisted of isometric substitution of corn by pequi peel meal at 0, 2.5, 5.0, 7.5 and 10%. The performance and internal and external egg quality were evaluated. Egg production, egg mass and feed conversion worsened linearly with increasing replacement of corn with pequi peel meal, while the yolk color increased linearly. The other variables related to performance and internal and external egg quality were not significantly affected by the treatments. It can be concluded that the use of pequi peel meal replacing corn in laying hen diet does not change the internal and external egg quality, improves the pigmentation of egg yolk, and impairs performance of laying hens. 

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