Egg quality and production performance of laying hens injected with growth hormone and testosterone in the late phase of production

2016 ◽  
Vol 56 (1) ◽  
pp. 147
Author(s):  
H. Mohammadi ◽  
Z. Ansari-Pirsaraei ◽  
S. N. Mousavi ◽  
M. Bouyeh ◽  
A. Gholibeikifard ◽  
...  
Keyword(s):  
Growth Hormone ◽  
Egg Production ◽  
Laying Hens ◽  
Egg Quality ◽  
Quality Parameters ◽  
Production Performance ◽  
Fixed Dose ◽  
Control Group ◽  
Egg Mass ◽  
Positive Effects

In this study, 160 73-week-old laying hens (HyLine W-36) were used to investigate the changes in production performance and egg quality parameters of aged laying hens after injection of different doses of growth hormone (GH) and a fixed dose of testosterone (Ts). The hens were weighed individually, placed in laying cages and then randomly assigned to four treatments with four replicates of 10 birds each, in a completely randomised design. The experiment was started at the 75th week and lasted until the 82nd week of age. The treatments were: 1: injection of 100 µL distilled water (control group), 2: injection of 500 µg Ts/kg liveweight + 50 µg GH/kg liveweight, 3: injection of 500 µg Ts/kg liveweight + 100 µg GH/kg liveweight and 4: injection of 500 µg Ts/kg liveweight + 150 µg GH/kg liveweight. In this study, ovulation rate (egg production percent), egg mass and feed intake were significantly higher in Treatment 3 than the control group (P < 0.05), and in Treatment 4, feed conversion ratio was significantly higher than for the other experimental groups (P < 0.05). In addition, the birds in Treatment 3 showed greater egg weight, albumen height, eggshell weight, eggshell density and eggshell weight per surface area than the control group (P < 0.05). In Treatment 3, egg length significantly increased compared with Treatments 1 and 4 (P < 0.05), and in Treatments 2 and 4, shell breaking strength was significantly lower than for the control group (P < 0.05). In conclusion, our results showed positive effects of GH and Ts administration on egg quality parameters and production performance in aged laying hens. Taken together, in the present study Treatment 3 was found more effective in improving egg quality and production performance of the old laying hens.

scholarly journals Effect of Supplementation ARA (Arachidonic acid) Oil on Production Performance, Egg quality and Fatty Acid Composition in Laying Hens

2021 ◽  
Vol 2 (4) ◽  
pp. 1164-1174
Author(s):  
Dian Rizki Purba ◽  
Xiao-guang Dong ◽  
Jing Wang ◽  
Hai-jun Zhang ◽  
Guang-hai Qi ◽  
...  
Keyword(s):  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Acid Composition ◽  
Egg Production ◽  
Laying Hens ◽  
Infant Nutrition ◽  
Egg Quality ◽  
Quality Parameters ◽  
Production Performance ◽  
Egg Mass

The effect of supplementation ARA oil on production performance, egg quality, fatty acid composition in laying hens were examined on this study. The aims on this study to producing ARA enriched eggs to meet infant nutrition requirements. A total of 450 Roman White laying hens with a similar egg production rate and good body condition at 55 weeks of age were randomly divided into 5 treatments. Each treatment was replicated 6 times with 15 hens per replicate.  Hens were fed basal diets with 0, 2,5%, 1,25%, 0,625%, and 0,3125% ARA oil addition. The supplementation ARA oil was effect to decreased egg production, egg weight, egg mass, daily feed intake and FCR (P<0.05) during 9-12 week, but on egg quality parameters showed slightly changed during the 1-12 week but not consistency and that change was not statistically significant. Arachidonate acid (ARA) was increased by supplementation ARA oil (P<0.05). This effect was detected in directly proportional to the addition of ARA oil on diet. This is opposite effect to DHA, DHA was decreased by supplementation ARA oil (P<0.05) and also effect to ratio ARA/DHA was increased (P<0.05) by supplementation ARA oil.

scholarly journals Production performance and egg quality of White Rock laying hens fed diets containing whole linseed

2020 ◽  
Vol 20 (1-2) ◽  
pp. 48-53
Author(s):  
H Khatun ◽  
MN Islam ◽  
MA Rashid ◽  
MY Ali ◽  
MSK Sarker
Keyword(s):  
Egg Production ◽  
Laying Hens ◽  
Egg Quality ◽  
Control Diet ◽  
Production Performance ◽  
Egg Mass ◽  
Feed Conversion ◽  
Egg Weight ◽  
Quality Aspects ◽  
Significant Difference

This study was conducted to know the production performance of laying hen by using different graded level of linseed. At 56 weeks of age, a total of 160 laying hens were raised up to 63 weeks of age. All hens were fed a basal corn soyabean meal diet. The experiment was allowed 4 dietary treatments (T0, no addition of whole linseed in the basal diet; T1,  addition of 5% whole linseed; T2, addition of 10% whole linseed and T3, addition of 15% whole linseed) with 5 replications and per replication contains eight hens. Egg production, feed intake, egg weight of each treatment was recorded. Egg samples were collected and analyzed for egg quality. The results showed that egg production and egg mass (kg) exhibited for all dietary treatment groups were unaffected (P>0.05) by feeding linseed to the laying hens. Feed Conversion Ratio (FCR) was found significant difference within the four dietary group (P<0.05). Egg quality aspects such as yolk weight, egg weight, HU and yolk index were not differed significantly (P>0.05) among treatments.  A trend for lower yolk weight was observed in birds fed 10% linseed, where as the highest yolk weight percentage was recorded in control diet. There was no statistical difference among the different diets for yolk index. The results of the present trial suggested that feeding linseed to the laying hens has no detrimental effects on egg production and egg quality. Bangladesh J. of Livestock Res. 20(1-2): 48-53, Jan-Dec 2013

scholarly journals Effects of feed supplementation with manganese from its different sources on performance and egg parameters of laying hens

2014 ◽  
Vol 59 (No. 4) ◽  
pp. 147-155 ◽  
Author(s):  
K. Venglovská ◽  
Ľ. Grešáková ◽  
I. Plachá ◽  
M. Ryzner ◽  
K. Čobanová
Keyword(s):  
Egg Production ◽  
Laying Hens ◽  
Egg Quality ◽  
Protein Hydrolysate ◽  
Basal Diet ◽  
Egg Yolk ◽  
Control Group ◽  
Feed Supplementation ◽  
Positive Effects ◽  
Dietary Treatments

The objective of this study was to compare the effects of feed supplementation of laying hens with manganese from its inorganic and organic sources on performance and some parameters of egg quality. Ninety-six hens at 20 weeks of age were randomly allocated to 4 dietary treatments, each consisting of 6 replicates (4 birds per replicate). The control group was fed unsupplemented basal diet (BD) with only natural background Mn level of 46.4 mg/kg feed. For the three experimental treatments, the BD was supplemented with 120 mg Mn/kg either from Mn-sulphate or Mn-chelate of protein hydrolysate (Mn-Pro) or Mn-chelate of glycine hydrate (Mn-Gly). After 8 weeks of dietary treatments the egg production, egg weight, feed intake, and feed efficiency were not affected by dietary treatments. Regardless of the sources, Mn supplementation to feed resulted in significantly decreased percentages of cracked eggs compared to the unsupplemented control group. The thickness, weight, proportion, and index of eggshell were significantly elevated in all groups supplemented with Mn. The intake of Mn-Gly resulted in considerably increased Mn deposition in egg yolk compared to the control eggs. In the control and Mn-sulphate groups yolk malondialdehyde (MDA) started to increase after 20 and 30 days of egg storage respectively, whereas in eggs from hens given organic Mn-sources this parameter was not affected up to 40 days. Although there were no significant differences in MDA values between the treatments until 20 days of storage, the Mn-sulphate group showed significantly higher MDA concentration in yolks compared to the control group after 30 days of storage. These results demonstrate that supplementation of hens&rsquo; diet with Mn has positive effects on eggshell quality. Feed supplementation with Mn from organic sources appears to be more effective in preventing yolk lipid oxidation during cold storage of eggs than that from Mn-sulphate. &nbsp;

Supplementation of organic minerals and its effect on production performance and egg quality of laying hens

2020 ◽  
pp. 12-16
Keyword(s):  
Feed Intake ◽  
Egg Production ◽  
Laying Hens ◽  
Egg Quality ◽  
Production Performance ◽  
Control Group ◽  
Adaptation Period ◽  
Egg Shell ◽  
Organic Minerals

The present study was conducted to find the effect of different levels of organic minerals on egg production and egg quality of laying hens. A total of 45 laying hens were selected and divided into three groups with 3 replicates of 5 birds each. The control group was provided with commercial ration having inorganic minerals and the other two groups were supplemented with organic minerals at the rate of 7.5 (OM-50) and 15 mg/kg (OM-100). The experiment lasted for 5 weeks including 1 week of adaptation period. Overall feed intake was significantly higher (P<0.05) in the control. Significantly lower feed intake was recorded in group OM-100. Numerically lower (better) FCR was recorded in OM-100 at all recorded stages. Significantly (P<0.05) higher egg weight, egg shell weight and egg shell thickness was found in OM-100 compared to the control. Similarly, albumin height, Haugh unit and yolk weight were significantly (P<0.05) higher in M-100. It was concluded from the present results that organic minerals at the level of 50 and 100 mg/kg improved the performance and egg quality of laying hens. However, better results were found in OM-100.

Use of the feed additive “Toxinon” in feeding of replacement young chickens and laying hens

2022 ◽  
pp. 34-49
Author(s):  
T. A. Poleva ◽  
◽  
V. A. Tereshchenko ◽  
Keyword(s):  
Growth And Development ◽  
Egg Production ◽  
Laying Hens ◽  
Egg Quality ◽  
The Body ◽  
Production Costs ◽  
Feed Additive ◽  
Control Group ◽  
Egg Mass ◽  
Experimental Group

At the present time of the development of industrial poultry farming, the main tasks are to increase the productivity of poultry, reduce production costs and improve its quality. Under practical conditions, there is a shortage of minerals in compound feed for poultry, which leads to a violation of metabolism in the body, slowing down growth and development, deterioration of the work of organs and systems, a decrease in productivity and its quality, and an increase in the prime-cost of production. The purpose of the research was to study the effectiveness of the use of the feed additive “Toxinon” in feeding of replacement young chickens and laying hens. The research has been carried out under the conditions of OOO “Bogotolskaya Poultry Farm” in the Bogotolsky area in the Krasnoyarsk Territory. Comprehensive studies have been conducted to study the effect of the feed additive “Toxinon” on the growth and development, productivity and metabolism of replacement young chickens and laying hens of the industrial herd of the cross “Haysex brown”. The influence of different dosages of the feed additive “Toxinon” on the growth rate, livestock livability, digestibility and use of feed nutrients, egg productivity, egg quality, hematological and biochemical blood parameters of replacement young chickens and laying hens has been studied. The laying hens of the 3rd experimental group were distinguished by the highest egg productivity during the experiment period, which exceeded the control group in terms of the gross number of eggs by 6,4 %, the intensity of egg production by 5,02 abs.%, egg weight by 3,0 % (P > 0,95), the yield of egg mass on the average laying hen by 9,12 %. At the same time, expenditures of feed in the 3rd experimental group have decreased compared to the control group by 7,3 % for 10 eggs, by 9,2 % for 1 kg of egg mass. It has been found that in feeding replacement young chickens and laying hens, the most effective use of the feed additive “Toxinon” in the dosage of 0,25 % of the weight of the feed mixture (2,5 kg/ton of feed).

scholarly journals Combinations of cholecalciferol and 25-hydroxycholecalciferol as vitamin D sources in white laying hen feed diets

2014 ◽  
Vol 38 (6) ◽  
pp. 573-580
Author(s):  
Diego Fernando Remolina Rivera ◽  
Antonio Gilberto Bertechini ◽  
Tiago Ferreira Birro Oliveira ◽  
Solange de Faria Castro ◽  
Henrique Braga Oliveira ◽  
...  
Keyword(s):  
Vitamin D ◽  
Egg Production ◽  
Laying Hens ◽  
Egg Quality ◽  
Egg Laying ◽  
Available P ◽  
Egg Mass ◽  
Productive Performance ◽  
Positive Effects ◽  
25 Hydroxycholecalciferol

The effect of cholecalciferol (D3) and 25-hydroxycholecalciferol (25-OHD3) as isolated or associated sources of vitamin D (100%-0%, 75%-25%, 50%-50%, 25%-75%, 0%-100%) on the productive performance, egg quality, and bone characteristics was evaluated in white egg-laying hens fed two levels of calcium (Ca) and phosphorus (P) in the basal diet (BD) (BD1 = 0.38% Ca - 0.36% available P and BD2 = 3.2% Ca - 0.30% available P). Nine hundred and sixty Dekalb White hens (24 weeks old) were distributed into 80 cages, under a completely randomized factorial design for 16 weeks. The use of associated sources of vitamin D reduced the feed intake and feed conversion ratio, as well as BD1, which also increased the egg production and egg mass. The association of vitamin D sources with up to 50% 25-OHD3 increased the eggshell percentage. There was interaction (p<0.05) between the sources of vitamin D and the concentrations of Ca and available P, sources with at least 50% 25-OHD3 increased ash percentage and bone radiographic densitometry (BRD) with BD1; in BD2 the use of 25-OHD3 as isolated vitamin D source increased BRD. The association of D3 and 25-OHD3 improved the productive performance, increased the percentage of eggshell and had different positive effects on the bone characteristics that depend on the concentrations of Ca and available P in the balanced feed of white egg-laying hens.

Evaluating Brassica napus and Brassica juncea meals with supplemental enzymes for use in brown-egg laying hen diets: production performance and egg quality factors

2019 ◽  
Vol 99 (4) ◽  
pp. 820-832
Author(s):  
Rachel K. Savary ◽  
Janice L. MacIsaac ◽  
Bruce M. Rathgeber ◽  
Nancy L. McLean ◽  
Derek M. Anderson
Keyword(s):  
Feed Efficiency ◽  
Laying Hens ◽  
Egg Quality ◽  
Dietary Treatment ◽  
Quality Parameters ◽  
Egg Laying ◽  
Production Performance ◽  
Egg Mass ◽  
Quality Factors

Canola and juncea meals (CM and JM) have been thoroughly evaluated in diets of white- but not brown-shell egg laying hens (BSLH). This study compared the effects of dietary CM, JM, or soybean meal (SBM) on production performance and egg quality of BSLH. Over 48 wk, 300 Lohmann Brown-Lite laying hens were fed diets containing SBM, 10% or 20% CM (CM-10 or CM-20), and 10% or 20% JM (JM-10 or JM-20), without (−E) or with (+E) a phytase/multicarbohydrase enzyme cocktail. Egg weight decreased with CM-20 inclusion compared with SBM (P = 0.027; SBM, 63.1a; CM-10, 61.8ab; CM-20, 61.1b; JM-10, 62.6ab; JM-20, 61.7ab; g egg−1). In a meal by enzyme interaction, enzyme inclusion decreased percent shell and egg specific gravity of only the hens fed CM-20 (P ≤ 0.008). Body weight decreased (P = 0.031; −E, 2135a; +E, 2078b; g hen−1) and feed efficiency was improved (P = 0.032; −E, 1.98a; +E, 1.95b; g feed g egg mass−1) when enzyme was included in the diet. Dietary treatment did not affect mortality (P > 0.05). All performance and quality parameters were within expected ranges; therefore, 20% CM and JM can be included in BSLH diets, and enzyme inclusion can be used to improve feed efficiency regardless of meal type fed.

Probiotic and prebiotic supplementation improving the production performance and immune characteristics of laying hens

2017 ◽  
Author(s):  
Abhed Pandey ◽  
Avtar Singh ◽  
Shanthanagouda Admane Holeyappa ◽  
Harsimranjit Kaur
Keyword(s):  
Egg Production ◽  
Laying Hens ◽  
Basal Diet ◽  
Production Performance ◽  
Control Group ◽  
Egg Mass ◽  
Feeding Trial ◽  
Treatment Groups ◽  
Cell Mediated Immune Response ◽  
Bacillus Spp

A 16 week feeding trial was conducted with 140 White Leghorn layers of 22-23±0.08 weeks of age which were distributed randomly into seven experimental groups, having 4 replicates with 5 birds in each. The laying hens of control group (T1) were fed a basal diet (CP 18.04%), while in treatment groups T2, T3, T4 basal diet was supplemented with probiotic (containing 5×108 cfu/g of Lactobacillus fermentum, 1×109 cfu/g of Bacillus spp., 1×109cfu/g of Saccharomyces cerevisiae) at levels of 0.5g, 1.0 g and 2.0 g /kg feed, respectively, while in T5, T6, and T7 0.5g, 1.0g and 2.0g/kg feed of prebiotic (mannonoligosacchride of Saccharomyces cell wall-47g, formic acid-32g) was supplemented, respectively. The percent hen day egg production and feed efficiency (kg/dozen eggs and kg/kg egg mass) were improved (P less than 0.05) in probiotic and prebiotic incorporated diets. The mRNA expression levels of Toll like receptors (TLRs) TLR2 and TLR4 was increased (P less than 0.05) when graded levels of the probiotic and prebiotic were supplemented, while, TLR7 did not show any significant change. Thus, it can be inferred that the inclusion of the probiotic and prebiotic could enhance the production performance and immune status of birds by augmenting the T cell mediated immune response.

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 Application of Selenium Conjugated to Animal Protein in Laying Hens’ Diet for the Production of Selenium-Enriched Eggs

Foods ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 1224
Author(s):  
Kai Qiu ◽  
Youbiao Ma ◽  
Uchechukwu Edna Obianwuna ◽  
Jing Wang ◽  
Haijun Zhang ◽  
...  
Keyword(s):  
Laying Hens ◽  
Egg Quality ◽  
Intestinal Morphology ◽  
Feed Additive ◽  
Control Group ◽  
Organic Selenium ◽  
Positive Effects ◽  
Enhanced Production ◽  
Immune Capacity ◽  
Biochemical Indices

The current experiment was conducted to investigate the application effects of selenium conjugated to insect protein (SCIP) in the production of selenium-enriched eggs. A total of 450 laying hens were randomly assigned to five dietary groups, each group consisting of six replicates. Hens in the control group received a diet without selenium supplementation, whereas hens in the other four groups received diets supplemented with either 1, 2, 5, or 10 mg/kg of selenium from SCIP. The productive performance, egg quality, antioxidant and immune capacity, biochemical indices, intestinal morphology, and oviduct health of laying hens were evaluated. The results showed that the supplementation of organic selenium provided by SCIP in the diets of laying hens enhanced performance and egg quality without any toxicity effect, even at the 10 mg/kg inclusion level. A level of 2 mg/kg of selenium provided by SCIP in diets tentatively improved the serum antioxidant and immune capacity, intestinal development, and oviduct health of laying hens in a conspicuous manner. Hence, the biosafety and positive effects of SCIP as a feed additive supplement in laying hens’ diet have been demonstrated with the enhanced production of safe and selenium-enriched eggs.

Sign in / Sign up

Export Citation Format

Share Document