scholarly journals The Effects of Different Levels Chlorell Microalgae on Performance and Immune Response of Laying Hens Under Heat Stress Condition

2015 ◽  
Vol 9 (2) ◽  
pp. 71-74 ◽  
Author(s):  
Nasroallah Moradi Kor ◽  
Neda Mohamadi
Keyword(s):  
Immune Response ◽  
Heat Stress ◽  
Egg Production ◽  
Stress Condition ◽  
Linear Models ◽  
Laying Hens ◽  
Egg Mass ◽  
Randomized Design ◽  
Heat Stress Condition ◽  
Different Levels

This study was conducted to determine the effects of different levels microalgae Chlorell sp. on performance of laying hens under heat stress condition. A completely randomized design experiment, with 7 replicates and 6 treatments (9 birds per replicate) was carried out by allotting 378 white Lohman strain laying hens at 65 weeks of age. Six experimental treatments were continual addition of 0, 100, 200, 300,400 ppm microalgae Chlorell and 400 ppm toein to drinking warer were fed to laying hens for 9 weeks. Egg production, egg weight, egg mass output and feed intake were determined. Antibody production against sheep red blood cells (SRBC) also was measured. Data  were  analyzed  by  ANOVA  using  General  Linear Models procedure of  SAS software and comparison of means  were  compared  using  Duncan’s  multiple  range test. The results of this experiment showed that microalgae Chlorell had no effect on productive performance. Adding microalgae Chlorell to the drinking water improved immune response of laying hens and a more positive effect was observed when 400 ppm added to the water. It is concluded that the addition of microalgae Chlorell to the water drinking of laying hens improved immune response of laying hens.DOI: http://dx.doi.org/10.3126/ijls.v9i2.12058 International Journal of Life Sciences 9 (2) : 2015; 71-74

scholarly journals Dietary Germinated Paddy Rice and Stocking Density Affect Egg Performance, Serum Biochemical Properties, and Proteomic and Transcriptomic Response of Laying Hens Exposed to Chronic Heat Stress

Proteomes ◽  
2021 ◽  
Vol 9 (4) ◽  
pp. 48
Author(s):  
Tossaporn Incharoen ◽  
Sittiruk Roytrakul ◽  
Wirot Likittrakulwong
Keyword(s):  
Heat Stress ◽  
Egg Production ◽  
Laying Hens ◽  
Protein Profile ◽  
Stocking Density ◽  
Biochemical Properties ◽  
Paddy Rice ◽  
Egg Mass ◽  
Serum Samples ◽  
Transcriptomic Response

Germinated paddy rice (GPR) could be a good alternative feed source for poultry with stocking density and heat stress problems. A total of 72 Hy-line Brown laying hens raised under low (LSD, 0.12 m2/bird) and high stocking densities (HSD, 0.06 m2/bird) were investigated. Three dietary GPR levels (0, 74 and 148 g/kg) were used. It was found that average daily feed intake, hen-day egg production, and egg mass significantly decreased in the HSD group. The levels of serum glucose (GLU), phosphorous (P), corticosterone (CORT), total Ig, lysozyme (LZY), and superoxide dismutase activities (SOD) in the HSD group were higher than those in the LSD group. Dietary GPR significantly affected GLU, P, alternative complement haemolytic 50 (ACH50), total Ig, and LZY. Moreover, CORT level significantly decreased in 74 and 148 g/kg dietary GPR groups, whereas SOD significantly increased only in the 148 g/kg dietary GPR group. Serum samples were analyzed using liquid chromatography-tandem mass spectrometry, and 8607 proteins were identified. Proteome analysis revealed 19 proteins which were enriched in different stocking densities and dietary GPR levels. Quantitative real-time reverse transcription-PCR technique was successfully used to verify the differentiated abundant protein profile changes. The proteins identified in this study could serve as appropriate biomarkers.

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 > 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 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 Flour of mushroom Agaricus blazei as additive functional in food of laying hens

2019 ◽  
Vol 20 ◽  
Author(s):  
Iolanda Silveira Freitas ◽  
Michele de Oliveira Mendonça ◽  
Izabela Silveira Freitas ◽  
Onofre Barroca de Almeida Neto ◽  
David Garcia Ferreira ◽  
...  
Keyword(s):  
Immune System ◽  
Feed Intake ◽  
Egg Production ◽  
Laying Hens ◽  
Egg Quality ◽  
Experimental Unit ◽  
Egg Mass ◽  
Agaricus Blazei ◽  
Feed Conversion ◽  
Different Levels

SUMMARY The current study aims to evaluate the zootechnical performance, quality of eggs, and the immune system of the laying hen's upon supplementing their feed with the flour of the mushroom Agaricus blazei. A total of 210 Hisex Brown® hens, 67 weeks old, were distributed in a completely randomized design with five treatments (control [0%], 0.04%, 0.08%, 0.12% and 0.16% of mushroom meal) with seven replicates and six birds per experimental unit. Were evaluated the zootechnical performance (feed intake, egg production [per day and housed], marketable egg production, egg weight and egg mass, feed conversion per dozen and egg mass, and viability);egg quality (specific weight, Haugh units, weight and percentage of components, shell thickness and yellow intensity of the egg yolks); and the hemogram (erythrogram and leukogram). Mainly, different levels of mushroom meal, were includedin laying hens feeds significantly (p<0.05)egg mass and feed intake. However, the leukogram and the erythrogram remained within the reference values, indicating that the birds were healthy. The addition of different levels of Agaricus blazei flour in the laying hens feed did not promote changes in the egg quality, in the immune system, and in the zootechnical performance, except for the feed intake which reduced with the inclusion of mushroom flour and eggs mass in which the 0.07% level promoted the maximization of this parameter.

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