Effects of dietary supplementation of arginine and lysine on performance and egg quality characteristics of laying quails (original) (raw)
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Ratio of digestible lysine to arginine in Japanese laying quails
Semina: Ciências Agrárias, 2018
The objective of this study was to evaluate the existence of an interaction between lysine and arginine, and to determine their optimal ratio in the diets of Japanese laying quails. We used 480 quails with an initial mean weight of 180 g at 140 days of age. The quails were distributed in the experimental units in a completely randomized (3 × 2) factorial design, with three levels of digestible lysine (1.083, 1.183, 1.283%) and two levels of digestible arginine (1.472 and 1.580%). There were six treatments, with 10 replicates each, for a total of 60 experimental units. Rations, leftovers, and dead animals were weighed in order to calculate and adjust performance parameters. The variables analyzed were: daily diet consumption (DDC), laying rate (LR), average egg weight (AEW), egg mass (EM), feed conversion per egg mass and dozen eggs (FCEM and FCDE, respectively), weights of yolk, eggshell, and albumen (YW, ESW, and AW, respectively), relative yolk, eggshell, and albumen weights (RYW,...
The Indian Journal of Animal Sciences
The objective of this study was to determine the ideal digestible arginine: lysine ratio in the diet of laying Japanese quails reared in hot climate, on the variables of productive performance and egg quality. Completely randomized experimental design was adopted with five diets and six replications containing eight laying quails (Coturnix japonica) per experimental unit, totaling 240 birds with an average weight of 169.6±0.005 g and 40 weeks of age with an initial egg production of 79.18±3.32%. The digestible arginine: lysine ratios were 110%, 120%, 130%, 140% and 150%. The arginine: lysine ratios analyzed were not able to influence feed intake, egg production, commercial eggs, egg weight, egg mass, feed conversion per egg mass (FCEM) and per dozen eggs (FCDZ); however, there was a quadratic effect for the variation in body weight. There was no significant difference for egg quality characteristics. The 110% digestible arginine: lysine ratio in the diet of laying Japanese quails re...
Digestible arginine concentrations in the diet of Japanese quails
Semina: Ciências Agrárias, 2016
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), rela...
Egg quality of hens fed different digestible lysine and arginine levels
Revista Brasileira de Ciência Avícola, 2015
This experiment aimed at evaluating the influence of the supplementation of digestible lysine and digestible arginine at different ratios in the diet fed to layers between 24 to 44 weeks of age on egg quality. In total,320 Lohmann LSL laying hens were allotted according to a completely randomized design in a 2 x 4factorial arrangement, consisting of two digestible lysine levels (700 or 900 mg/kg of diet) and four digestible arginine levels (700, 800, 900,or 1000 mg/kg of diet). Diets contained, therefore, digestible Lys:Arg ratios of 100, 114, 128, and 142 when the diet contained 700 mg digestible lysine per kg of diet, and 78, 89, 100, and 111 when 900 mg digestible lysine per kg was supplemented. The data obtained with digestible arginine levels were fitted to polynomial regression equations, and with digestible lysine, the F test (5% probability) was used to compare the means. The following variables were evaluated: egg weight; internal egg quality (yolk percentage and index, albumen percentage, Haugh units), eggshell quality (specific gravity andeggshell percentage); and whole egg, albumen, and yolk solids content. Digestible lysine and arginine interaction did not affect egg quality. Increasing levels of digestible lysine and arginine reduced eggshell quality and albumen solids, respectively. The levels of these amino acids suggested to improveegg quality are 700 mg digestible lysine and 700 mg digestible arginine/kg of feed at a Dig Lys: Dig Arg ratio of 100.
Digestible lysine requirement for European laying quail
Acta Scientiarum. Animal Sciences, 2019
The experiment was carried out to evaluate the productive performance of European quails (Coturnix coturnix) in the production phase, fed with diets containing different levels of digestible lysine. A total of 175 female quails, aged 65 days, were randomly distributed in a completely randomized design with five treatments and five replicates per treatment. The animals were housed in 25 metal cages, and each cage represented an experimental parcel, with seven birds per parcel. The birds were fed the experimental rations containing 1.177, 1.217, 1.317, 1.417, and 1.517% digestible lysine. The parameters evaluated were: laying rate, mass of eggs produced, feed intake in the period, lysine intake, feed conversion per dozen and per mass. Significant differences were observed for posture rate with quadratic behavior, which indicated higher production for the level of 1.23% of digestible lysine. There was an increasing linear behavior for the feed and lysine intake, and for conversion feed...
Protein, methionine+cystine and lysine levels for Japanese quails during the production phase
Revista Brasileira de Ciência Avícola, 2005
An experiment was conducted at Faculdade de Medicina Veterinária e Zootecnia/Unesp-Botucatu for 168 days to evaluate the effects of protein, Met + Cys and lysine diet levels on egg production and egg quality of laying Japanese quails. Quails with 42 days of age were reared in a completely randomized design. There were 1,944 quails distributed in four replicates of 27 birds per pen, according to a factorial 3x3x2 with three crude protein levels (16, 18 and 20% CP), three Met + Cys levels (0.700; 0.875 and 1.050%) and two lysine levels (1.100 and 1.375%). Birds fed diets with 18 and 20% CP had higher feed intake and egg production than those fed diets with 16% CP. There was significant interaction (p<0.05) between protein and Met + Cys levels on egg weight. There was no effects (p>0.05) of the protein level on feed conversion per dozen eggs; however, improved feed conversion per egg mass was seen for birds fed diets with 20% CP compared to those fed diets with 16% and 18% CP. Protein and lipid percentage in the yolk increased when dietary protein level increased from 16 to 18%. Increasing Met + Cys from 0.700% to 0.875% reduced yolk protein percentage. Higher lipid percentage in the yolk was seen in eggs from quails fed diets with 1.050% Met + Cys, whereas 1.375% lysine in the diet of resulted in decreased egg production and egg mass, besides poorer feed conversion per dozen eggs and per egg mass.
2018
The aim of the present research was to study egg quality characteristics by feeding different levels of energy and lysine in laying TANUVAS Namakkal gold quail. A total of 360 Japanese quails aged 7 weeks old were divided into nine equal groups of four replicates each consisting of 10 quails. Nine diets including three levels of ME (2600, 2700 and 2800 Kcal/kg) each at three levels of lysine (0.8, 0.9 and 1.0 per cent) were formulated (3×3 factorial design) with 18% crude protein in all the treatments. The laying phase of twenty weeks was divided into five periods with 28 days duration. During the last three days of every 28 days period egg quality traits like egg weight, shape index, albumen index, yolk index and shell thickness were evaluated. There were no differences between the experimental groups in terms of egg weight, shape index, yolk index, albumen index and egg shell thickness. In conclusion, the levels of energy and lysine supplementation in the quail diet did not appear...
Arquivo Brasileiro de Medicina Veterinária e Zootecnia, 2012
The present study was developed using 864 Hy-Line W36 laying hens (42 to 58 weeks of age) with a randomized experimental design in a 4x3 factorial arrangement, with five replicates and 12 birds per experimental unit and 4 evaluation periods of 28 days each. The digestible lysine levels studied were 0.675%, 0.743%, 0.811% and 0.879%, and the digestible threonine levels were 0.542%, 0.596% and 0.650%. The performance and egg quality was evaluated. There were no significant effects on the egg production, specific gravity, albumen and yolk percentage and total solids in albumen and yolk for birds submitted to the different dietary digestible lysine and threonine levels. There was significant interaction between these amino acids on the egg shell percentage and Haugh unit in fresh eggs. There was a decreasing linear effect on the feed intake with increase of digestible lysine level. Egg weight, egg mass and feed conversion demonstrated a quadratic effect with the increase of the digestib...
Journal of Dairying, Foods & Home Sciences, 2022
Background: This study was conducted to investigate the effects of natural and synthetic sources of lycopene on performance, egg quality and some blood characteristics of Japanese quail layers. Methods: The 252 eight-week-old quail hens were randomly divided into seven treatments with three replication. The first treatment was fed basal diet (control). Second and third treatments were given diets containing tomato fruit powder (TOM) at a level of 17 and 34 g/kg equal to 50 and 100 mg/kg lycopene, fourth and fifth treatments were given red bell pepper fruit powder (RBP) at level 16.23, 32.46 g/kg equal to 50 and 100 mg/kg lycopene, while synthetic lycopene powder at a rate of 50, 100 (mg/kg) was supplemented to sixth and seventh respectively. Result: The final body (T4-T6), hen day egg production (except for T3 and T6), egg weight, egg mass (T4, T5), feed intake, FCR were improved as compared to control. Significant effect on the weight of eggshell, yolk, albumen and albumen (height and diameter). Yolk (height, diameter, index) improved as compared to control. Significant (P0.05) increase in total protein and HDL, while cholesterol (except T2 and T7), triglycerides (except T2) and LDL were decreased significantly (P0.05). It could be concluded that supplementary TOM, RBP and LY, have beneficial effects on laying performance, egg quality traits and some biochemical indices of quails.
Estimation of optimal lysine in quail chicks during the second and third weeks of age
Italian Journal of Animal Science, 2013
An experiment was conducted to assess the optimal levels of dietary lysine (Lys) in Japanese quail from 7 to 21 days of age. A dose-response diet was formulated to be adequate in all amino acid concentrations with the exception of Lys. Different levels of supplemental L-Lysine.HCl were added to the doseresponse diet at the expense of corn starch, sodium bicarbonate, and NaCl to create 6 levels of Lys ranged from 0.91% to 1.51% in diet. Optimal Lys for feed conversion ratio, breast meat yield, and leg meat yield were estimated at 1.15%, 1.21%, and 1.16% of diet, respectively, based on linear broken-line regression. With quadratic broken-line regression, the Lys requirements for body weight gain, feed conversion ratio, thigh meat yield, and breast meat yield were estimated at 1.27%, 1.21%, 1.32%, and 1.34% of diet, respectively. Overall, Lys requirements of starting Japanese quail may be at least 1.34% of diet for optimizing carcass attributes fed low-CP dose-response diet.