EFFECT OF ENZYME DRUGS, AMINO ACIDS AND PROBIOTICS ON LAYING HENS PERFORMANCE AND ON EGG QUALITY

2019 ◽  
Vol 2 ◽  
pp. 111-118
Author(s):  
M. Yu. Syromiatnikov ◽  
◽  
M. I. Derevshchikova ◽  
N. V. Pas’ko ◽  
E. V. Mikhailov ◽  
...  
Keyword(s):  
Amino Acids ◽  
Laying Hens ◽  
Egg Quality

PSIV-B-26 Effect of different intakes of sulfur amino acids on the productive response and egg quality of commercial laying hens

2021 ◽  
Vol 99 (Supplement_3) ◽  
pp. 388-389
Author(s):  
Elías Salvador Tasayco ◽  
Julio Narvaez Reyes ◽  
Lorenzo Rios Junchaya ◽  
Luis Lujan Valenzuela
Keyword(s):  
Amino Acids ◽  
Egg Production ◽  
Laying Hens ◽  
Egg Quality ◽  
Block Design ◽  
Metabolizable Energy ◽  
Feed Consumption ◽  
Sulfur Amino Acids ◽  
Gross Margin

Abstract Modern laying hens have improved their productive response and persistence of egg production. However, in terms of productivity, egg quality and profitability, there are still several issues that need to be reevaluated and improved, among them the level and consumption of digestible sulfur amino acids (AASD). The objective is to determine the effect of different AASD consumptions on the productive response and egg quality of commercial laying hens. METHODS: 160 laying hens of the LOHMANN Brown genetic line, 90 weeks old, of uniform weight and size, were used. The laying hens were distributed in the study area, following the protocol of a Random Block Design (DBA). 4 AASD intakes (g / hen / day) were established as treatments: T-1 (730.11 mg), T-2 (677.20 mg), T-3 (607.09 mg) and T-4 (676.88 mg). Each of the treatments had 5 repetitions, giving a total of 20 experimental units. The variables of egg production, egg weight and mass, feed consumption, feed conversion index, energy efficiency, Haugh unit of the egg, shell color and percentage, egg yolk color and index, margin and economic reward were evaluated. RESULTS: The results showed that the different AASD consumptions did not significantly affect (P > 0.05) the productive response and egg quality of the hens and affected the margin and economic retribution. AASD intakes in the range of 607 to 730 mg / hen / day did not affect the productive response and egg quality. The metabolizable energy level of the diet influences the economic response to different intakes of digestible sulfur amino acids. The consumption of 676.88 mg / hen / day of AASD with a level of 2725 Kcal of metabolizable energy / Kg of feed achieved the highest gross margin and best economic return in 90-week-old LOHMANN Brown laying hens.

scholarly journals Distillers feeds and feed fractions of barley in the diets of laying hens

1990 ◽  
Vol 62 (5) ◽  
pp. 423-433
Author(s):  
Matti Näsi
Keyword(s):  
Amino Acids ◽  
Adverse Effects ◽  
Ethanol Production ◽  
Feed Intake ◽  
Laying Hens ◽  
Egg Quality ◽  
Protein Supplement ◽  
Colour Intensity ◽  
Egg Weight ◽  
Barley Protein

Two experiments using 551 and 537 LSK-61 WL laying hens in the tests were conducted to evaluate hen performance and egg quality when graded levels of barley or wheat distillers feeds (BDDGS, WDDGS) from conventional process and barley protein and fibre (BP, BF) from integrated starch-ethanol production were incorporated into the diets. In the first exp. hens were fed diets containing 200 g/kg diet of WDDGS or 100 or 200 g BDDGS either with or without cellulase addition, respectively. In the second trial hens were fed diets with 50 or 100g BP as protein supplement or 100 or 200g/kg diet BF with or without multienzyme (Avizyme) addition. Each diet with similar contents of ME, CP, lysine and S-amino acids was fed to hens from 34 to 58 wk of age following 4-wk pretreatment and 2-wk transition periods. There were only small dietary effects and no significant differences in performance due to treatment in either trial. The production level was rather high; on average the laying rate was 82.3 and 84.5 %, feed intake 119 g and 118 g/d and FCR 2.42 and 2.37 kg feed/kg eggs in exp. 1 and 2, respectively, indicating no adverse effects of the supplements used. A linear decrease (P < 0.01) in egg weight and yolk colour intensity (P

scholarly journals EFFECT OF DIFFERENT PROTEIN AND/OR METABOLIZABLE ENERGY LEVELS IN DIETS FORMULATED BASED ON IDEAL PROTEIN CONCEPT ON PERFORMANCE, EGG PRODUCTION, AND EGG QUALITY TRAITS OF LAYERS DURING PHASE 1 OF EGG PRODUCTION

2021 ◽  
Vol 9 (10) ◽  
pp. 94-107
Author(s):  
Shaimaa R. Anwar ◽  
Ahmed A. Al-Sagan ◽  
El- Bannaa R. A ◽  
Melegy T. M
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Egg Production ◽  
Laying Hens ◽  
Egg Quality ◽  
Metabolizable Energy ◽  
Feed Consumption ◽  
Ideal Protein ◽  
Crystalline Amino Acids ◽  
The Ideal

A comparative study was conducted to determine the impacts of crude protein (CP) reductions in laying hen diets. During phase one of egg production, 270 laying hens were randomly assigned into six dietary treatments, which were replicated three times using a 2 × 3 factorial experiment. Reduced CP and metabolizable energy (ME) diets were formulated based on the ideal amino acid profile concept and supplemented with crystalline amino acids. The control treatment received standard commercial diets containing 18.8% CP and 2,725 kcal/kg ME. Average weight gain, hen day egg production percentage, egg weight, egg mass, and other selected egg quality parameters were recorded. Data were statistically analyzed. Feed consumption and the feed conversion ratio were improved in birds fed reduced CP diets supplemented with crystalline amino acids. The dietary CP level significantly influenced shell thickness (ST), while the dietary ME level had no effect. A highly significant interaction was observed between CP percent and the Haugh unit (HU).  Results indicate that the “ideal protein concept” may be followed as an economically feasible option for laying hens since it optimizes the dietary amino acid profiles and ME levels, and have a positive effect on hen growth, egg quality and environmental pollution.

scholarly journals Supplementation of Buttiauxella sp. 6-phytase to commercial laying hen diets with reduced nutrient density on productive performance and egg quality

2018 ◽  
Vol 6 ◽  
Author(s):  
Yueming Dersjant-Li ◽  
Carlos Millán ◽  
Oscar Casabuena ◽  
Alberto Quiles ◽  
Luis F. Romero ◽  
...  
Keyword(s):  
Amino Acids ◽  
Egg Production ◽  
Laying Hens ◽  
Egg Quality ◽  
Laying Hen ◽  
Available P ◽  
Egg Mass ◽  
Productive Performance ◽  
Nutrient Density ◽  
Digestible Amino Acids

SummaryA study was conducted to evaluate productive performance in laying hens fed diets with reduced nutrient density based on the nutritional contribution of a Buttiauxella phytase in laying-hen diets from 21-57 weeks of age. A commercial laying hen diet was offered ad libitum to the 480 ISA Brown laying hens from 18-21 weeks of age. From 21 weeks onwards, the hens received one of four dietary treatments: a positive control (PC) diet, a down specified diet (DS1) + phytase at 300 FTU/kg, a second down-specified diet (DS2) + phytase at 600 FTU/kg and a third test diet formulated as per DS1 + phytase at 1,200 FTU/kg feed. The PC was formulated based on ISA breeder recommendations. DS1 was formulated with reduction of 0.149% available P, 0.134% Ca, 55 kcal/kg AME, 0.33% CP, digestible amino acids (up to 0.015%) and 0.013% Na based on the contribution of Buttiauxella phytase at 300 FTU/kg. DS2 was formulated with reduction of 0.177% available P, 0.159% Ca, 60 kcal/kg AME, 0.61% CP, digestible amino acids (up to 0.028%) and 0.02% Na based on the contribution of Buttiauxella phytase at 600 FTU/kg. Every dietary treatment was fed to 12 cages containing 10 hens each. The trial treatments did not include a full, DS negative control, as ethical considerations regarding birds' welfare when feeding such diets over such an extended period of time did not permit this. No significant differences were seen in hen-day egg production, feed intake, egg weight, feed to egg mass ratio, shell, yolk or albumen proportion, unsaleable eggs or shell breaking strength in laying hens fed the PC diet or the DS diets with added phytase. Yolk colour increased significantly with phytase supplementation. Supplementing the DS1 diet with 300 FTU and the DS2 diet with 600 FTU resulted in non-significant differences in tibia ash, Ca and P, compared to the PC diet. The data from this study indicated that applying the nutrient contributions for Buttiauxella phytase at 300 and 600 FTU/kg maintained the egg production, BW and egg quality parameters compared to PC. The best economic efficiency value during the whole experimental period was recorded with phytase at 600 FTU/kg when full matrix values are used. When commercial diets are formulated based on ISA breeder recommendations, lowering diet nutrient density while supplementing with phytase reduced the overall diet cost, which should contribute to the profitability of egg production.

scholarly journals Methionine plus Cystine Levels for Light Laying Hens on Production Phase

2021 ◽  
Vol 10 (2) ◽  
pp. e57910212817
Author(s):  
Marcelo Helder Medeiros Santana ◽  
Fernando Guilherme Perazzo Costa ◽  
Ricardo Romão Guerra ◽  
Patrícia Emília Naves Givisiez ◽  
Jalceyr Pessoa Figueiredo Júnior ◽  
...  
Keyword(s):  
Amino Acids ◽  
Laying Hens ◽  
Egg Quality ◽  
Control Treatment ◽  
Egg Mass ◽  
Sulfur Amino Acids ◽  
Production Phase ◽  
Randomized Design ◽  
Histological Data ◽  
Completely Randomized Design

The objective of this study was to evaluate the levels of sulfur amino acids in the diets of laying hens of 34-50 weeks of age. 336 Dekalb White birds were distributed in a completely randomized design with six treatments, 14 replicates of four birds each. The diets consisted in a control treatment, formulated to meet the nutritional requirements of sulfur amino acids according to the NRC (1994) and five diets varying in methionine plus cystine level (0.536, 0.603, 0.670, 0.737, 0.804%). Performance, egg quality and histological data were evaluated. There was a significant quadratic effect for production and egg mass and mass and dozen conversion per eggs, with methionine plus cystine estimations of 0.691%, 0.689%, 0.737% and 0.730%, respectively. Methionine plus cystine levels significantly affected the histology of tissues. The level of 0.737% of digestible methionine plus cystine, with 90% of methionine plus cystine: lysine ratio, and 756.53 mg/bird/day of consumption, is recommended to light laying hens in the production phase.

scholarly journals Glycerol Monolaurate Enhances Reproductive Performance, Egg Quality and Albumen Amino Acids Composition in Aged Hens with Gut Microbiota Alternation

Agriculture ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 250 ◽  
Author(s):  
Tao Liu ◽  
Chuang Li ◽  
Yang Li ◽  
Fengqin Feng
Keyword(s):  
Amino Acids ◽  
Gut Microbiota ◽  
Sex Hormones ◽  
Serum Calcium ◽  
Reproductive Performance ◽  
Laying Hens ◽  
Egg Quality ◽  
Total Serum ◽  
Control Group ◽  
Glycerol Monolaurate

As it is known to all that the laying rate of commercial laying hens is significantly decreased during the late laying period, paralleled with increased feed conversion rate (FCR) and declined egg quality. However, recent studies demonstrate that reproductive performance as well as egg quality in aged hens can be largely improved by feed supplements. Among them, glycerol monolaurate (GML), a monoglyceride of medium chain fatty acids, is regarded as a promising supplement in poultry production. The aim of this experiment was to evaluate the effect of dietary GML on laying performance, serum biochemical indices, egg quality and gut microbiota in hens during 40–64 weeks of age. A total of 378 (40-week-old) Hy-Line Brown laying hens were randomly assigned into three treatments (21 hens/replicate and 6 replicates/treatment). The control group received a basal diet, and the treated groups fed basal diets containing 150 and 300 mg/kg GML. The results revealed that laying rate (p < 0.05) was significantly increased and the FCR (p < 0.05) was reduced in GML-containing groups compared with the control group. The egg quality (including eggshell thickness and strength) was notably improved by GML supplementation at the later late laying period, and the content of total amino acids and flavor amino acids in the albumen were also increased. Inclusion of 300 mg/kg GML in diet increased the levels of laying-related sex hormones (serum follicle stimulating hormone, luteinizing hormone and estradiol, p < 0.05), serum calcium and lipid (total serum cholesterol, triglycerides and low-density lipoprotein cholesterol, p < 0.05). Moreover, the community and microbial function of gut microbiota were notably altered by GML supplementation. These findings revealed that dietary GML improved the reproductive performance and egg quality mainly by stimulating the sex hormones secretion, serum calcium metabolism and nutrients utilization, which provided us a new approach to simultaneously promote the egg production and improve the egg quality at aged hens.

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