scholarly journals The effect of a diet supplemented with L-carnitine on egg production in pheasant (Phasianus colchicus)

2008 ◽  
Vol 53 (No. 1) ◽  
pp. 31-35 ◽  
Author(s):  
P. Suchý ◽  
E. Straková ◽  
F. Vitula
Keyword(s):  
Egg Production ◽  
Laying Hens ◽  
Experimental Period ◽  
Phasianus Colchicus ◽  
Control Group ◽  
Average Weight ◽  
Feed Mixture ◽  
Egg Weight ◽  
Experimental Group

The main aim of the study was to assess the effect of a diet supplemented with L-carnitine on egg weight and laying rate in hens of pheasant (<I>Phasianus colchicus</I>). The experiment lasted 14 weeks and was performed with 210 experimental and 210 control laying hens. The birds were kept in cages; one cock and seven hens per cage. Both control and experimental hens were administered the complete feed mixture, with the only difference that the feed mixture administered to experimental hens was supplemented with L-carnitine at a level of 0.01%. During the experimental period, eggs were collected and weight of individual eggs was determined. Control and experimental groups provided 8 039 and 8 499 eggs, respectively. The results showed that L-carnitine increased egg weight (<I>P</I> < 0.01) and laying rate. The effect of L-carnitine on egg weight and laying rate manifested itself until weeks 11 and 13, respectively. The average weight of eggs laid during the experimental period was (mean ± SD) 32.22 ± 3.03 g in the control group and 32.51 ± 2.83 g in the experimental group, with the overall laying rate being 44.29% in the control group and 47.30% in the experimental group.

The effectiveness of the inclusion of domestic enzymes in the compound feed to increase the egg production of laying hens and the quality of eggs

2021 ◽  
pp. 33-41
Author(s):  
L. R. Mikhailova ◽  
L. V. Zhestyanova ◽  
A. Yu. Lavrentiev ◽  
N. M. Kostomakhin ◽  
V. S. Sherne
Keyword(s):  
Production Technology ◽  
Egg Production ◽  
Laying Hens ◽  
Feed Consumption ◽  
Control Group ◽  
Egg Weight ◽  
Chicken Eggs ◽  
Experimental Group ◽  
Poultry Farming

Compound feed are subject to requirements for their composition, since they use several types of grains that contain anti-nutritive substances that reduce the digestibility and use of nutrients. One of the tasks of domestic poultry farming is to reduce losses by increasing the digestibility and accessibility of feed. Among the most effective ways to solve this problem is to add enzymes to the feed of poultry. The inclusion of enzyme drugs in the composition of compound feed contributes to the inactivation of anti-nutritive substances, which contributes to an increase in the coeffi cient of digestibility of nutrients. The purpose of the work was to establish the feasibility and eff ectiveness of the enrichment of compound feed used in the production technology of chicken eggs with mixtures of enzyme drugs of domestic production of Amylosubtilin G3x, Cellolux-F and Protosubtilin G3x. Three groups of laying hens with 57 heads in each have been formed: a control group and two experimental groups. The duration of the experiment was 420 days. Laying hens of the control group have been received farm compound feed depending on their age. Laying hens of the 1st experimental group have been received compound feed of the control group enriched with the enzymes Amylosubtilin G3x and Cellolux-F depending on the age. In the compound feed of laying hens of the 2nd experimental group enzyme drugs were additionally introduced depending on the age Amilosubtilin G3x and Protosubtilin G3x. Higher egg production rates have been observed in the 1st experimental group – 357,81 eggs, which was 6,48 % higher than in the control group and 1,84 % higher than in the 2nd experimental group. The weight of eggs of laying hens of the 1st experimental group was 1,85 g or 2,97 % more, and the 2nd experimental group was 0,7 g or 1,12 % more than in the control group. The diff erence between the egg weight in laying hens of the 1st and 2nd experimental groups was 1,85 % or 1,15 g. The lowest feed consumption of 1,37 kg for the production of 10 eggs was in the laying hens of the 1st experimental group, which was less than the indicator of the control group by 10,94 and by 4,2 % than in the 2nd experimental group.

scholarly journals Long-term application of clinoptilolite via the feed of layers and its impact on the chemical composition of long bones of pelvic limb (femur and tibiotarsus) and egg cortex

2008 ◽  
Vol 53 (No. 10) ◽  
pp. 550-554 ◽  
Author(s):  
I. Herzig ◽  
E. Strakova ◽  
P. Suchy
Keyword(s):  
Crude Protein ◽  
Egg Production ◽  
Experimental Period ◽  
Egg Laying ◽  
Average Weight ◽  
Feed Mixture ◽  
Insignificant Difference ◽  
Pelvic Limb ◽  
Experimental Group

Selected 120 layers, hybrid breed Bovans Goldline, were divided into two balanced groups: control (C) and experimental (E) group. The layers were raised in three-floor cage technology with automatic watering, manual feeding, in the environment with regulated lighting and thermal schedule. The actual experimental period started in the 22<sup>nd</sup> week and ended in the 68<sup>th</sup> week of age of the layers. In the period following the filling of the cages the layers received complete feed mixture N1, subsequently, until the end of the experiment, they received feed mixture N2. The feed mixtures for Group C and E were of the same composition, with the only difference that the feed mixture designed for the experimental group contained 1% of clinoptilolite (commercial additive ZeoFeed) as a substitute for the same portion of wheat.. The layers consumed the feed mixtures and drinking water<I> ad libitum</I>. In the layers of Group E the intensity of egg laying increased by 1.1%, which corresponds to an increased number of laid eggs 3.08 per layer. The average weight of laid eggs was 66.3 ± 6.25 g in the layers of Group C, 65.6 ± 5.44 g (<I>P</I> ≤ 0.05) in the experimental layers of Group E. In Group E the consumption of feed mixture per one egg was 4.1 g lower when compared to the control. In 100% dry matter the eggshell of layers that received clinoptilolite (Group E), as opposed to Group C, had a statistically significantly higher (<I>P</I> ≤ 0.01) content of crude protein, calcium and magnesium. Almost the same and insignificant difference in values was found in ash and phosphorus. The values of the same indicators were statistically significantly higher in both monitored bones (<I>femur </I>and <I>tibiotarsus</I>) (<I>P</I> ≤ 0.05; <I>P</I> ≤ 0.01) during the application of clinoptilolite (Group E), with the exception of P in <I>femur</I>, where an insignificant rise in the level of P occurred. The rise in the concentration of Mg in Group E was of particular importance: in <I>femu</I>r by 50.4%, in <I>tibiotarsus</I> by 32.4%. If we compare the monitored values in femur and <I>tibiotarsus</I>, we can see that the levels of ash, Ca and P are higher in <I>tibiotarsus</I>, and the levels of crude protein and Mg are lower. The long-term application of clinoptilolite favourably influenced the lodgement of Ca, P, Mg and crude protein in the eggshell as well as in the bones (<I>femur, tibiotarsus</I>), increased the egg production and reduced the consumption of feed mixture per one egg, while the good productive health of the layers was maintained.

Modelling the egg components and internal cycle length of laying hens

2019 ◽  
Vol 59 (3) ◽  
pp. 420 ◽  
Author(s):  
H. C. P. Bendezu ◽  
N. K. Sakomura ◽  
E. B. Malheiros ◽  
R. M. Gous ◽  
N. T. Ferreira ◽  
...  
Keyword(s):  
Cycle Length ◽  
Egg Production ◽  
Laying Hens ◽  
Experimental Period ◽  
Experimental Unit ◽  
Egg Weight ◽  
Cycle Lengths ◽  
Predicted Values ◽  
Egg Components ◽  
Over Time

A model that can estimate the changes that occur to the composition of egg components over time is an important tool for the nutritionists, since it can provide information about the nutrients required by a laying hen to achieve her potential egg output. In this context, the present study was aimed to model the potential egg production of laying hens during the egg-production period. One hundred and twenty Hy-Line W36 and ISA-Brown layers were used from 18 to 60 weeks of age, with each bird being an experimental unit. The birds were housed in individual cages during the experimental period. Egg production (%), egg weight (g) and the weight of egg components were recorded for each bird. The data were used to calculate the parameters of equations for predicting the weights of yolk, albumen and shell, and for predicting internal cycle length. The predicted results were evaluated by regressing residual (observed minus predicted) values of the predicted values centred of their average value. The equations for predicting mean yolk weight with age are for Hy-Line W36 (y1) and ISA-Brown (y2) respectively. Albumen and shell weights for Hy-Line W36 were described by the equations 15.07 × (yolk weight)0.37 and 0.70 × (yolk + albumen weight)0.50 respectively, and for ISA-Brown, 21.99 × (yolk weight)0.24 and 1.60 × (yolk + albumen weight)0.34 respectively. The average internal cycle length over time for Hy-Line W36 (ICL1) is described by the model 22.95 + 5.24 × (0.962t) + 0.02 × t and for ISA-Brown by 24.01 + 10.29 × (0.94t) + 0.004 × t, where t is the age at first egg (days). The assessment of the results indicated that the equations for predicting egg weight were more accurate for Hy-Line W36 but less precise for both strains, whereas the equation models for predicting the internal cycle lengths were more accurate and precise for ISA-Browns. The models could predict the potential weight of egg components and the rate of laying associated with the internal cycle lengths, and, on the basis of this information, it is possible to improve the nutrient requirement estimated.

scholarly journals The Influence of the Mineral-Microbial Preparation on Ammonia Concentration and Productivity in Laying Hens Houses

Atmosphere ◽  
2019 ◽  
Vol 10 (12) ◽  
pp. 751 ◽  
Author(s):  
Remigiusz Gałęcki ◽  
Michał Dąbrowski ◽  
Tadeusz Bakuła ◽  
Kazimierz Obremski ◽  
Adriana Nowak ◽  
...  
Keyword(s):  
Body Weight ◽  
Linear Correlation ◽  
Egg Production ◽  
Laying Hens ◽  
Animal Health ◽  
The Body ◽  
Control Group ◽  
Microbial Composition ◽  
Experimental Group ◽  
Campylobacter Spp

The aim of this study was to evaluate the influence of the biopreparation Deodoric® on ammonia (NH3) concentration, performance, and hygiene standards in laying hen (ROSS-308) production. Statistically significant differences in NH3 concentration and the body weight of laying hens were observed between the control group (C) and the experimental group (E) where Deodoric® was applied at the set dose. In the control group, an increase in NH3 concentration could have contributed to the decrease in the body weight of laying hens, egg production, and % hen day egg production, whereas no such correlations were observed in the experimental group. A moderate linear correlation between NH3 concentration vs. humidity (r = 0.68), air flow (r = 0.48) and weakly linear correlation between NH3 concentration and age of birds (r = 0.27) was noted in group C. In group E, NH3 concentration vs. temperature (r = 0.27) and humidity (r = 0.14) were weakly correlated. Statistical analysis of changes in the microbial counts isolated from manure revealed a significant decrease of mesophilic microorganisms on day 28 decrease of Campylobacter spp. days 14 and 84 in group E. However, for the entire experimental model no statistically significant changes in the number of Campylobacter spp. and mesophilic bacteria were found. The tested preparation did not cause changes in the microbial composition of tissue swabs. Deodoric® contributes to animal welfare by reducing the ammonia concentrations in poultry houses. It is also recommended for use in poultry farms to improve animal health and performance and to generate benefits for producers.

scholarly journals The long-term administration of a clinoptilolite-supplemented feed to layers and its effect on performance, haematological parameters and metabolic profile

2008 ◽  
Vol 53 (No. 5) ◽  
pp. 212-218 ◽  
Author(s):  
E. Straková ◽  
P. Suchý ◽  
I. Herzig ◽  
V. Šerman ◽  
N. Mas
Keyword(s):  
Experimental Period ◽  
Reference Intervals ◽  
Control Group ◽  
Average Weight ◽  
Adaptation Period ◽  
Mean Values ◽  
Total Plasma Protein ◽  
Term Administration ◽  
The Mean ◽  
Experimental Group

120 selected layers (Bovans Goldline hybrid) aged 19 weeks with an average weight of 1 735 g were divided into two balanced groups: control group (Group C) and experimental (Group E). Layers were reared in three-tier cages with automatic watering, manual feeding, and at controlled light and temperature regimens. One cage accommodated two layers, the floor surface area was 0.1125 m<sup>2</sup> per layer. The experiment started after a 20-day adaptation period with layers aged 22 weeks (Week 22) and ended when layers were 68 weeks old (Week 68). In a period of initiation (i.e. Weeks 19–38), layers were fed the complete feeding mixture N1. Then they received the feeding mixture N2 until the end of the experiment. Feeding mixtures in both groups (C and E) had the same composition; the only difference between mixtures was that the feeding mixture in the experimental group was enriched with 1% clinoptilolite (i.e. the commercially available additive ZeoFeed). Layers received feeding mixtures and drinking water <I>ad libitum.</I> In the course of the experimental period, control layers laid 16 289 eggs while experimental layers laid 16 474 eggs. It follows from the results that the laying intensity in experimental layers was 1.7% higher as compared to control layers, i.e. the number of laid eggs in experimental layers increased by 5.6 eggs per layer. The mean weight of all laid eggs was 66.3 ± 6.25 g in the control group and 65.6 ± 5.44 g in the experimental group (<I>P</I> ≤ 0.01). Such performance was achieved at the consumption of feeding mixture being 141.7 g per laid egg in the control group and 137.6 g per laid egg in the experimental group. The consumption of feeding mixture in the experimental group was 4.1 g lower than that in the control group. The mean values of parameters monitored in blood plasma such as uric acid, cholesterol, glucose, lactose, calcium, phosphorus, ALP, and LDH in both groups of layers ranged within reference intervals, with no significant differences being detected between both groups.However, statistically significant differences between both groups were found in total plasma protein (<I>P</I> ≤ 0.01), triacylglycerol levels (<I>P</I> ≤ 0.05), and magnesium (<I>P</I> ≤ 0.01), which were elevated in the control group, and in AST (<I>P</I> ≤ 0.05) whose level in the control group was significantly lower than that in the experimental group. The results of haematological tests performed with layers’ blood revealed statistically significant changes in parameters such as the erythrocyte count (<I>P</I> ≤ 0.01), haemoglobin level (<I>P</I> ≤ 0.01), and MCHC (<I>P</I> ≤ 0.05), which were elevated in the experimental group, and in the leukocyte count (<I>P</I> ≤ 0.05), which was lower in the experimental group, as compared with the control. However, the values found varied within physiological ranges.

scholarly journals Feeding stimulates functional abilities of queen bees of the Carpathian subspecies

2021 ◽  
Vol 935 (1) ◽  
pp. 012022
Author(s):  
O P Ulugov ◽  
A Sharipov ◽  
V N Sattarov ◽  
V G Semenov ◽  
A I Skvortsov
Keyword(s):  
Egg Production ◽  
Control Group ◽  
Functional Abilities ◽  
Feed Mixture ◽  
The Third ◽  
Physiological Processes ◽  
Sugar Syrup ◽  
Organism Growth ◽  
Queen Bees ◽  
Experimental Group

Abstract The researches were conductedon queen bees of the Carpathian subspecies in conditions of Tajikistan. Four groups of similar families were formed, 10 in each group. In the control group, sugar syrup (1:2) was given as a stimulating feeding, in small portions of 700 ml. Bees of the first experimental group were fed with the sugar syrup, with the addition of drone larvas’ homogenate. The second group was fed with the sugar syrup with addition of a feed mixture “Similak”, the third group - sugar syrup with the addition of a compositional form consisting of a feed mixture “Similak” and the drone larvas’ homogenate. In the experimental groups, in contrast to the control group, an increase in the egg production of queen bees and the brood breeding reflex by 1.3-1.44 times was found.In general, it has been established that to stimulate the physiological processes in bee’ organism, growth and development of colonies in spring, it is necessary to use stimulating feeding by sugar syrup in combination with drone larvas’ homogenate and feed mixture “Similak” 700 ml each.

Influence of enzyme feed additive on the quality of eggs on the example of PJSC “Poultry plant Chelyabinskaya”

2020 ◽  
pp. 52-59
Author(s):  
S. Ermolov ◽  
V. Kosilov ◽  
Yu. Barabanova
Keyword(s):  
Egg Production ◽  
Laying Hens ◽  
Labour Productivity ◽  
Feed Additives ◽  
Poultry Meat ◽  
Feed Additive ◽  
Simultaneous Increase ◽  
Control Group ◽  
Experimental Group

Poultry farming is one of the major branches of animal husbandry, which develops through concentration, specialization and intensification on the basis of poultry plants and poultry farms. The increase in production of eggs and poultry meat is based on a significant increase in the productivity of poultry with a simultaneous increase in its population with a high payment of feed by production and the increase in labour productivity. The purpose of the work was to study the influence of enzyme feed additives in the diets of laying hens on the quality of eggs. The researches have been carried out in PJSC “Poultry plant Chelyabinskaya”, which produces high-quality chicken eggs obtained from the poultry cross “Loman LSL-classic”. The object of study was enzyme drugs produced by Sunzyme – a multi-enzyme drug that includes xylanase, cellulase and mannase activities. The dosage of enzyme drugs in the feed mixture of laying hens was: Sunfyze 5000 – 80 g/t, Sunzyme – 100 g/t. The results of researches show that in the groups that received enzyme drugs in their diet, egg production was higher than in the control group. So, for the entire period of researches the hens of the experimental groups were significantly superior to the control group in terms of egg production per average laying hen. The largest difference was in hens of the 1st experimental group (enzyme drug Sunfyze) – 10,8 eggs; the smallest in hens of the 3rd group (enzyme drugs Sunfyze and Sunzyme) – 5,7 eggs. In hens of the 2nd experimental group compared with hens of the control group egg production was higher by 7,9 eggs. The best indicators of production efficiency have been obtained in the 1st experimental group of laying hens, which were fed with the enzyme feed additive Sunfyze to reduce the nutritional value of the diet according to the matrix.

scholarly journals Laying performance, egg quality and hatchability traits of Japanese quail (coturnix coturnix japonica) fed a chromium yeast feed additive Layplus(R)

2018 ◽  
Vol 47 (2) ◽  
pp. 68-75
Author(s):  
BO Oyebanji ◽  
FT Atoki
Keyword(s):  
Egg Production ◽  
Coturnix Japonica ◽  
Feed Additive ◽  
Control Group ◽  
Average Weight ◽  
Coturnix Coturnix Japonica ◽  
Egg Weight ◽  
Coturnix Coturnix ◽  
Laying Performance ◽  
Significant Difference

A 12-week study was conducted at the Teaching and Research Farm of the Obafemi Awolowo University, Ile-Ife to evaluate the effect of dietary inclusion of LAYPLUS® (LP) on fertility and egg parameters of female Japanese quails, Coturnix coturnix japonica. Two hundred and ten birds of average weight of 167.75±3.94g were used for this study, and they were allocated randomly into seven treatment groups and replicated thrice. Group 1 served as control without inclusion of LAYPLUS®, while groups 2, 3, 4 and 5 had 250 mg/kg, 500 mg/kg, 750mg/kg and 1000mg/kg inclusion of LP and group 6 had 240mg/kg of vitamin E, respectively, and group 7 clomiphene citrate. Eggs were collected daily and egg production was calculated on a bird-day basis. The data obtained were analyzed using one-way ANOVA. There was significant increase (p<0.05) in the egg production parameters namely egg weight, egg laid per hen and percentage laying rate of LP500mg/kg compared with other groups. The highest percentage egg production was by the LP500mg/kg at 57% while the lowest was by the LP250mg/kg at 41%. There was no significant difference in the egg weight and Haugh unit among the supplemented birds and the control group. There was significant difference among the treatments in the percentage hatchability of the eggs with LP500mg/kg eggs recording the highest value of 95.68%. It can be concluded from this experiment that supplementation of the feed with LP at 500mg/kg had beneficial effect on quail production through improved effect on egg production and hatchability. Bang. J. Anim. Sci. 2018. 47 (2):68-75

scholarly journals Effect of Date Palm Pollen Supplementation on the Egg Production, Ovarian Follicles Development, Hematological Variables and Hormonal Profile of Laying Hens

Animals ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 69
Author(s):  
Mohamed Saleh ◽  
Dariusz Kokoszyński ◽  
Mohamed Abd-Allah Mousa ◽  
Ahmed Abdel-Kareem Abuoghaba
Keyword(s):  
Egg Production ◽  
Laying Hens ◽  
Ovarian Follicle ◽  
Basal Diet ◽  
Ovarian Follicles ◽  
Control Group ◽  
Egg Mass ◽  
Egg Weight ◽  
Hormonal Profile ◽  
Ovarian Follicle Development

This experiment studied the effect of DPP supplementation in the laying hens’ diet on the ovarian follicle development, hematological variables and hormonal profile of laying hens. Eighty-four, 78-week-old, Lohman LSL hybrids layers were equally divided into four groups (4 groups × 7 replicates × 3 hens); hens in the 1st group were fed a basal diet (control), while those in the 2nd, 3rd and 4th groups, were fed on the same diet and supplemented with 1.25, 2.5 and 5.0 g DPP/kg diet. The results showed that the egg weight, egg mass and laying rate of laying hens treated with DPP levels were significantly increased compared to those of the hens in the control group. Egg weight, egg surface area, albumen quality and percentage of the yolk in treated hens significantly increased compared with controls. The increased DPP levels in laying hens‘ diet significantly (p < 0.05) increased WBC, Hb and TAC, while heterophil/lymphocyte (H/L ratio) significantly decreased. Additionally, the concentrations of FSH and LH and the weights of ovary and oviduct in the treated hens significantly (p < 0.05) increased compared with the control. In conclusion, the DPP supplementation in the hen diet significantly improved egg production, EW, H/L ratio, ovarian follicles, FSH and LH hormones concentrations.

scholarly journals Performance, Biochemical Profile and Antioxidant Activity of Hens Supplemented with Addition of Milk Thistle (Silybum marianum) Seed Cakes in Diet

2019 ◽  
Vol 67 (4) ◽  
pp. 993-1003 ◽  
Author(s):  
Ondřej Šťastník ◽  
Eva Mrkvicová ◽  
Leoš Pavlata ◽  
Andrea Roztočilová ◽  
Barbora Umlášková ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Biochemical Parameters ◽  
Laying Hens ◽  
Control Group ◽  
Egg Mass ◽  
Milk Thistle ◽  
Feed Mixture ◽  
Blood Biochemical Parameters ◽  
Blood Biochemical ◽  
Experimental Group

The aim of this study was to evaluate the effect of milk thistle seed cakes addition in laying hens diet to performance, blood biochemical parameters and antioxidant activity. A total of 30 Bovans Brown hens were included to the experiment. The trial was performed from the age of 69 weeks to 80 weeks of hens age. The experimental group received feed mixture containing 7% milk thistle seed cakes. Control group received feed mixture without milk thistle seed cakes. After the 69th week of age, the laying hens in the experimental group reached a higher number of eggs and produced more egg mass compared to the control group. In the evaluation of the egg quality parameters, higher Haugh units, a higher millimeter height of the egg and thinner eggshell in the group receiving 7% of the seed cakes were found. When evaluating health indicators, higher antioxidant activity was found in the experimental group. Blood biochemical parameters was without any differences.

Sign in / Sign up

Export Citation Format

Share Document