scholarly journals Combined supplementation of betaine and vitamin C improves the performance of quails raised in the tropics with reduced floor space

2021 ◽  
Vol 905 (1) ◽  
pp. 012107
Author(s):  
A Ratriyanto ◽  
S Prastowo
Keyword(s):  
Vitamin C ◽  
Egg Production ◽  
Egg Mass ◽  
Feed Conversion ◽  
Efficiency Ratio ◽  
Floor Space ◽  
Randomized Design ◽  
Vitamin C Supplementation ◽  
Combined Supplementation ◽  
The Tropics

Abstract This study investigated how combined betaine and vitamin C supplementation affects quails’ productive performance in reduced floor space. In total, 256 laying quails aged 23 weeks (154.6±5.0 g) were arranged in a completely randomized design of factorial 2×2 with four replicates. The birds were allocated to 16 cages with two floor spaces consisting of 250 cm2, 222 cm2. They were fed a diet without (Control) or with supplementation of 0.12% betaine in combination with 250 mg/kg vitamin C (BV). The collected data were analyzed by analysis of variance and continued to Duncan’s test. Interactions occurred in egg production and egg mass. The lower floor space without BV supplementation decreased egg production, but lower floor space with BV supplementation enhanced egg production (p<0.05). Supplementing BV enhanced egg mass in each floor space (p<0.05). Reducing floor space did not influence feed intake (FI), egg weight (EW), protein efficiency ratio (PER), and energy efficiency ratio (EER). BV enhances FI, egg production (EP), EW, PER, and EER and reduces the feed conversion (FCR; p<0.01). Thus, combined supplementation of betaine and vitamin C improves quails’ performance in the tropics raised with reduced floor space.

scholarly journals Performance, Body Temperature and Egg Quality of Laying Hens Fed Vitamins D and C Under Three Environmental Temperatures

2001 ◽  
Vol 3 (1) ◽  
pp. 49-56 ◽  
Author(s):  
DE Faria ◽  
OM Junqueira ◽  
PA Souza ◽  
EAL Titto
Keyword(s):  
Heat Stress ◽  
Body Temperature ◽  
Vitamin C ◽  
Vitamin D3 ◽  
Egg Production ◽  
Egg Quality ◽  
Egg Mass ◽  
Randomized Design ◽  
Cyclic Heat ◽  
Environmental Temperatures

Three experiments were conducted in a climatic chamber to determine the effects of vitamins D3 and C supplementation on performance, body temperature, and egg quality under thermoneutral temperature (24.8º to 27.0º C), a cyclic heat stress (26.2º C for 16 h and 32.1º C for 8 h) and a constant heat stress (30.0º to 32.0º C) for three weeks in each temperature. One hundred forty-four White Leghorn hens aged 31 weeks were used in a completely randomized design with a factorial arrangement of 3 x 3: vitamin D3 (2,500, 3,000, and 3,500 IU/kg) and vitamin C (0, 200, and 400 ppm), with a total of nine treatments with four replicates of four hens each. Parameters measured included feed intake (FI), feed:gain (FG), egg production (EP), egg weight (EW), egg mass (EM), rectal (RT) and dorsal temperatures (DT), percentages of albumen (AP) and yolk (YP), Haugh units (HU), yolk index (YI), shell percent (SP), shell thickness (ST) and egg specific gravity (ESG). Vitamin D3 influenced the parameters SP, ST, ESG and DT; vitamin C influenced YI, SP and ESG. There was no influence of environmental temperature only on HU. It was concluded that higher levels of vitamin D3 and 200 or 400 ppm of vitamin C can be improve eggshell quality and that heat stress impaired the main characteristics evaluated.

scholarly journals Digestible arginine concentrations in the diet of Japanese quails

2016 ◽  
Vol 37 (4Supl1) ◽  
pp. 2453 ◽  
Author(s):  
Thamírys Vianelli Maurício ◽  
José Geraldo de Vargas Júnior ◽  
Matheus Faria de Souza ◽  
Walter Amaral Barboza ◽  
Louisiane De Carvalho Nunes ◽  
...  
Keyword(s):  
Egg Production ◽  
Egg Laying ◽  
Egg Mass ◽  
Average Weight ◽  
Feed Conversion ◽  
External Quality ◽  
Japanese Quails ◽  
Randomized Design ◽  
Different Levels ◽  
Haugh Unit

The objective of this study was to evaluate the effect of different levels of arginine in the diet of Japanese quails and to determine which provides the best egg production indices. We used 400 birds with an initial average weight of 180 g at 140 days of age. These were distributed among experimental units in a randomized design. Five levels of digestible arginine were studied (1.148, 1.256, 1.364, 1.472, and 1.580%) in reference to a fixed level of digestible lysine (1.083%; for arginine to lysine ratios of 1.06, 1.16, 1.26, 1.36, and 1.46). Each treatment was replicated 10 times for a total of 50 experimental units, each with eight quails. Feed rations, leftovers, and dead animals were weighed to calculate and adjust performance parameters. The variables analyzed were: daily feed intake (DFI), egg laying rate (ER), average egg weight (EW), total egg mass (EM), feed conversion per egg mass and per dozen eggs (FCEM and FCDE), yolk, skin, and albumen weights (AYW, ASW and AAW), relative weights of yolk, albumen and shell (RYW, RAW and RSW), the Haugh unit (HU), and the percentage of eggs suitable for market (EP). The variables associated with performance and internal and external quality were not affected (P &gt; 0.05) by different levels of arginine, except for EP, which decreased linearly (P = 0.009) with increasing arginine according to the equation: ? = -3.44x + 103.13, r² = 0.94. We conclude that the best concentration of arginine in quail diets is 1.148%, corresponding to an arginine to lysine ratio of 1.06.

scholarly journals PSVII-22 Effect of dietary supplementation of vitamin C on productive performance, egg quality, relative organ weight, and tibia strength of laying hens

2019 ◽  
Vol 97 (Supplement_3) ◽  
pp. 354-355
Author(s):  
Jomari B Delos Reyes ◽  
Jong Hyuk Kim ◽  
Geun Hyeon Park ◽  
Hyeon Seok Choi ◽  
Gi Ppeum Han ◽  
...  
Keyword(s):  
Vitamin C ◽  
Egg Production ◽  
Laying Hens ◽  
Egg Quality ◽  
Dietary Supplementation ◽  
Organ Weight ◽  
Egg Mass ◽  
Productive Performance ◽  
Relative Organ Weight ◽  
Vitamin C Supplementation

Abstract Endogenous synthesis of vitamin C may satisfy its requirement for laying hens; however, some previous experiments showed beneficial effects of dietary supplementation of vitamin C in laying hens. Thus, the results are still controversial. The objective of the current experiment, therefore, was to investigate the effect of vitamin C supplementation in diets on productive performance, egg quality, relative organ weight, and tibia strength in laying hens. A total of 504 46-wk-old Hy-Line Brown laying hens were allotted to 1 of 6 dietary treatments with 7 replicates in a completely randomized design. Each replicate had 12 hens. Diets were prepared by supplementing the basal diet with vitamin C at the levels of 250, 500, 1,000, 2,000, or 3,000 mg/kg and were fed to hens for 6 wks. Results indicated that increasing supplementation of vitamin C in diets increased hen-day egg production and egg mass (quadratic, P &lt; 0.05), but decreased production of broken or soft-shell eggs (linear and quadratic, P &lt; 0.01) and feed conversion ratio (quadratic, P &lt; 0.05). These positive effects were observable at the supplementation level of 250 mg/kg vitamin C, but there were no further benefits at the greater levels of vitamin C. Increasing supplementation of vitamin C in diets had no effects on egg quality, except for a decrease (quadratic, P &lt; 0.01) in egg yolk color with increasing vitamin C supplementation. The relative weights of the liver, kidney, and spleen were not affected by increasing supplementation of vitamin C in diets. Tibia strength was not influenced by increasing supplementation of vitamin C. In conclusion, dietary supplementation of vitamin C has a beneficial effect on egg production of laying hens. Quadratic responses of increasing vitamin C supplementation in diets reveal that supplementation of 250 mg/kg vitamin C is recommended for diets fed to laying hens at 46–52 wks of age.

scholarly journals Nutritional requirement of digestible threonine for brown-egg laying hens from 50 to 66 weeks of age

2015 ◽  
Vol 36 (6) ◽  
pp. 3877
Author(s):  
Ricardo Vianna Nunes ◽  
Márcia Antonia Bartolomeu Agustini ◽  
Sabrina Endo Takahashi ◽  
Alice Eiko Murakami ◽  
Cleverson De Souza ◽  
...  
Keyword(s):  
Egg Production ◽  
Laying Hens ◽  
Egg Laying ◽  
Egg Mass ◽  
Nutritional Requirement ◽  
Feed Conversion ◽  
Shell Weight ◽  
Quadratic Effect ◽  
Dietary Requirement ◽  
Randomized Design

The dietary requirement of threonine was determined for brown laying hens in the period 50-66 weeks of age, based on performance parameters and quality of eggs. For this we used 150 laying Shaver Brown hens distributed in a completely randomized design with five treatments (0.460; 0.490; 0.520; 0.550 and 0.580%) of digestible threonine, six replications and five birds each. The digestible threonine levels did not affect (p>0.05) feed intake, egg production, egg weight, egg mass or feed conversion kg kg-1, but presented a quadratic effect (p<0.05) on feed conversion dozen kg -1, where the lower conversion was obtained with a supply of 0.521% threonine in the diet. There was no effect of dietary digestible threonine levels (p>0.05) on the yolk and albumen index, specific gravity, yolk percentage, thickness or shell weight per surface area, since the variable Haugh unit displayed linear behavior (p<0.05) and increased with increasing levels of dietary threonine. The percentage of albumen and shell presented a quadratic effect (p<0.05) according to the dietary levels of threonine, and the best levels of these variables were obtained with a supply of 0.520% and 0.521% digestible threonine in the diet. The dietary requirement of threonine for laying hens, aged between 50 and 66 weeks, based on converting food kg kg-1, percentage of albumen and shell is 0.521%

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. 

scholarly journals Feeding time under performance and eggs quality of quails in production

2018 ◽  
Vol 19 (1) ◽  
pp. 136-143 ◽  
Author(s):  
Isabelle Bossolani Fernandez ◽  
Lígia Fátima Lima Calixto ◽  
Karoll Andrea Alfonso Torres-Cordido ◽  
Marina Jorge de Lemos ◽  
Cristina Kimie Togashi ◽  
...  
Keyword(s):  
Egg Production ◽  
Egg Quality ◽  
Egg Laying ◽  
Egg Mass ◽  
Feeding Time ◽  
Feed Conversion ◽  
Egg Weight ◽  
Coturnix Coturnix ◽  
Randomized Design

SUMMARY In order to evaluate the performance and egg quality of quails on different time feeding, One hundred ninety two Japanese quail (Coturnix coturnix japonica) at 24 weeks of age were distributed in a completely randomized design with two replications and twelve treatments eight birds each. The treatments consisted of two different times of feeding at 6h and 16h. The performance was evaluated by the feed intake (g/bird/day), egg production (%), egg mass (g), feed conversion per egg mass (kg/kg ), feed conversion per dozen eggs (kg/dz) and viability (%). The egg quality was evaluated by the eggshell thickness (mm), percentage of albumen, yolk percentage and average egg weight (g). The feeding time at 16h favored the performance of Japanese quails at 26 and 34 wk of age considering egg production, egg mass and average egg weight. Thus, it is recommended to feed the quails at times that coincide with the highest egg laying intensity, which ranges from 16 to 19h.

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 Digestible tryptophan-to-digestible lysine ratio in diets for laying hens of 42 to 58 weeks of age

2016 ◽  
Vol 17 (2) ◽  
pp. 139-148
Author(s):  
Arele Arlindo CALDERANO ◽  
Paulo Cezar GOMES ◽  
Guilherme Rodrigues LELIS ◽  
Juarez Lopes DONZELE ◽  
Sérgio Luiz de Toledo BARRETO ◽  
...  
Keyword(s):  
Egg Production ◽  
Laying Hens ◽  
Polynomial Regression ◽  
Experimental Unit ◽  
Egg Mass ◽  
Feed Conversion ◽  
Randomized Design ◽  
Use Efficiency ◽  
Experimental Treatments ◽  
The Ideal

SUMMARY To determine the ideal digestible tryptophan-to-digestible lysine ratio in diets for laying hens of 42 to 58 weeks of age, 240 Hy-Line W-36 hens at 42 weeks of age were distributed in a completely randomized design with five treatments, eight replicates and six birds per experimental unit. At 42 weeks of age, the birds were subjected to experimental treatments that consisted of diets with equal amounts of nutrients, except for the digestible tryptophan level. The digestible tryptophan levels in the experimental diets were 0.149, 0.160, 0.171, 0.182 and 0.193%, generating digestible tryptophan-to-digestible lysine ratios of 21.5, 23.1, 24.6, 26.2 and 27.8%. The digestible lysine level in the diets was sub-optimal (0.694%). The same ratios between lysine and the other amino acids were maintained in all experimental diets. The ideal digestible tryptophan-to-digestible lysine ratio was estimated through the studied parameters using analysis of variance and polynomial regression analysis (α = 0.05). The digestible tryptophan-to-digestible lysine ratio in diets quadratically affected egg production, egg mass, feed conversion per egg mass and use efficiency of digestible lysine for egg mass. However, there were no effect (P>0.05) on egg weight, feed conversion per dozen eggs, use efficiency of digestible lysine for number of eggs produced, percentage of egg components and weight gain. The digestible tryptophan-to-digestible lysine ratio estimated for theses parameters ranged from 23.6 to 24.3%. The digestible tryptophan-to-digestible lysine ratio recommended in diets for laying hens of 42 to 58 weeks of age is 24.3%.

scholarly journals By-product of passion fruit seed (Passiflora edulis) in the diet of commercial laying hens

2016 ◽  
Vol 96 (4) ◽  
pp. 488-494 ◽  
Author(s):  
Leonardo Henrique Zanetti ◽  
Alice Eiko Murakami ◽  
Mayra Diaz-Vargas ◽  
Ana Flávia Quiles Garcia Guerra ◽  
Ivan Camilo Ospina-Rojas ◽  
...  
Keyword(s):  
Lipid Oxidation ◽  
Egg Production ◽  
Laying Hens ◽  
Egg Quality ◽  
Storage Temperature ◽  
Passion Fruit ◽  
Egg Mass ◽  
Feed Conversion ◽  
Randomized Design ◽  
Two Temperatures

This study evaluated the effects of the inclusion of the by-product passion fruit seed (BPFS) in the diet of laying hens on performance, blood variables, quality, and lipid oxidation in eggs. A total of 384 Hy-line W36 layers (32 wk old) were distributed in a completely randomized design, with six treatments (control, 2.5%, 5.0%, 7.5%, 10.0%, and 12.5% inclusion of BPFS), eight replicates and eight birds each. The productive performance was evaluated for three cycles of 28 d each. There was no difference (P > 0.05) in egg production and feed conversion. However, feed intake showed increased linearly (P < 0.05). The egg weight, egg mass, percentage of eggshell, eggshell thickness, and Haugh unit did not differ (P > 0.05); however, the specific gravity of eggs increased (P < 0.05). Total cholesterol and blood triglycerides decreased linearly (P < 0.05). To evaluate the lipid yolk oxidation, a 6 × 5 × 2 factorial design (six levels of BPFS × five storage periods × two temperatures) was used. There was an interaction (P < 0.05) among the levels of BPFS, time, and storage temperature with the lowest oxidation level of 12.5% when eggs were refrigerated. The BPFS can be included at a level up to 5.0% without compromising bird performance and 12.5% for egg quality, and this level reduced yolk lipid oxidation.

scholarly journals Metabolizable energy levels for semi-heavy laying hens at the second production cycle

2009 ◽  
Vol 38 (5) ◽  
pp. 857-862
Author(s):  
Fernando Guilherme Perazzo Costa ◽  
Janaine Sena da Costa ◽  
Cláudia de Castro Goulart ◽  
Denise Fontana Figueiredo-Lima ◽  
Raul da Cunha Lima Neto ◽  
...  
Keyword(s):  
Energy Level ◽  
Feed Intake ◽  
Egg Production ◽  
Laying Hens ◽  
Energy Levels ◽  
Metabolizable Energy ◽  
Production Cycle ◽  
Egg Mass ◽  
Feed Conversion

This study was carried out to evaluate the energy levels in the diet to obtain better performance rates and quality of eggs from laying hens in the second production cycle. One hundred and eighty Bovans Goldline laying hens with 62 weeks of age were used during four 28-day periods. A completely randomized experimental design was used with four metabolizable energy levels (2,650, 2,725, 2,800, 2,875 and 2,950 kcal/kg), each with six replicates of six birds. The energy level of diet did not affect the weight of the egg, yolk, albumen and eggshell, the percentages of yolk, albumen and eggshell, yolk color and egg specific gravity. Feed intake, egg production, egg mass and feed conversion per egg mass and per dozen eggs increased significantly with increasing levels of metabolizable energy. Feed intake decreased linearly as the energy level in the diet increased. The metabolizable energy levels showed a quadratic effect on egg production, egg mass and feed conversion per egg mass and per dozen eggs. The metabolizable energy level of 2,830 kcal/kg was the most appropriate to promote better performance and quality of eggs from laying hens in the second production cycle.

Sign in / Sign up

Export Citation Format

Share Document