scholarly journals Effect of 28-h ahemeral light-dark cycle on egg production and egg shell qualities of laying hens. I. Effect on oviposition time, rate of lay and egg yolk weight.

1985 ◽  
Vol 22 (4) ◽  
pp. 181-189 ◽  
Author(s):  
Kumiko IBARAKI ◽  
Shigeo YOSHIDA ◽  
Yutaka KUNIMATSU ◽  
Yoichi KOJIMA
Keyword(s):  
Egg Production ◽  
Laying Hens ◽  
Egg Yolk ◽  
Dark Cycle ◽  
Time Rate ◽  
Egg Shell

scholarly journals Effectivity of BS4 enzyme complex on the performance of laying hens fed with different ingredients

2016 ◽  
Vol 21 (1) ◽  
pp. 1
Author(s):  
Arnold P. Sinurat ◽  
Tresnawati Purwadaria ◽  
Tuti Haryati
Keyword(s):  
Rice Bran ◽  
Egg Production ◽  
Laying Hens ◽  
Palm Kernel ◽  
Egg Yolk ◽  
P Value ◽  
Enzyme Complex ◽  
Recorded Data ◽  
Egg Shell ◽  
Digestible Amino Acids

<p class="abstrak2">An experiment was carried out to evaluate the effectivity of an enzyme complex produced by Eupenicilium javanicum BS4 on the performance of laying hens fed with different feed ingredients. Three diets were formulated with similar nutrients (protein, ME, digestible amino acids, Ca and available P) value to meet the nutrient requirement of laying hens.  Diets were formulated based on maize, palm kernel cake (PKC) or rice bran.  The diets were either supplemented or not with BS4 enzyme complex and fed to Isa Brown pullet from 19 to 37 weeks old. Each diet was fed to 24 birds and the performances were recorded. Data were analysed statistically with 2 X 3 factorial design with six replicates. Results showed that supplementation of BS4 enzyme into laying hens diet did not influence body weight change, feed intake, mortalities, egg weight and egg shell thickness but significantly increased egg production (P&lt;0.05) and the FCR (P&lt;0.01) in any feedstuff tested. It also improved egg yolk colour score on diet contained 20% PKC. Laying hens fed 20% PKC produced more eggs than those fed maize or rice bran. The egg shell of laying hens fed rice bran were thicker than those fed with maize or PKC. It is concluded that BS4 enzyme complex is effective when supplemented into laying hens diet.</p>

scholarly journals The response of laying hens fed fermented pineapple peel waste by indigenous microorganism from bamboo sprout

2020 ◽  
Vol 21 ◽  
Author(s):  
Heryandi YAN ◽  
Yanti Putri NOVA ◽  
Adrizal ADRIZAL ◽  
Endo Mahata MARIA
Keyword(s):  
Shell Thickness ◽  
Egg Production ◽  
Laying Hens ◽  
Egg Quality ◽  
Egg Yolk ◽  
Indigenous Microorganism ◽  
Pineapple Peel ◽  
Negative Effect ◽  
Egg Shell ◽  
Haugh Unit

ABSTRACT The bromelain enzyme content in pineapple peel waste predicted to promote digestive tract health and a positive effect on egg quality. This research aimed to evaluate the use of fermented pineapple peel waste in laying hens diet on egg quality. A total of laying hens 200 birds with Isa Brown strain, egg production of 70%, The average egg weight and body weight were 58.58 g/egg, and 1.62 g/bird, respectively. A completely randomized design was used, 5 different levels of fermented pineapple peel waste as treatment (0, 5, 10, 15, and 20%), and all treatments were repeated 4 times. Egg shell thickness, egg shell strength, haugh unit, egg yolk fat, and egg yolk color were measured. The use of fermented pineapple peel waste in the diet of laying hens up to 20% highly significant (P<0.01) on egg yolk color, and did not negative effect (P>0.05) on egg shell thickness, egg shell strength, haugh unit, and egg yolk fat. Fermented pineapple peel waste can be used as much as 20% in laying hens diet without disturbing egg quality and improve egg yolk color.

scholarly journals Nutritional Characteristics and Quality of Eggs from Laying Hens Fed on a Dried Papaya Peel Meal Diet

2019 ◽  
Vol 20 (3) ◽  
pp. 147
Author(s):  
Jein Rinny Leke ◽  
Florencia Nery Sompie ◽  
Erwin Wantasen ◽  
Trina Ekawati Tallei
Keyword(s):  
Crude Protein ◽  
Laying Hens ◽  
Hdl Cholesterol ◽  
Egg Yolk ◽  
Egg White ◽  
Blood Cholesterol ◽  
Negative Effects ◽  
Egg Weight ◽  
Nutritional Characteristics ◽  
Egg Shell

The objectives of this study were to analyze the eggs nutritional characterics and quality from laying hens fed with diried papaya (Carica papaya L) peel meal diets. A total 200 brown laying hens strain MB 402 (42 week-old). The design used in this study was  a The objectives of this study were to analyze the eggs’ nutritional characteristics and quality from laying hens fed with dried papaya (Carica papaya L) peel meal diets. A total of 200 brown laying hens strain MB 402 (42 week-old) were used in this experiment. The design used in this study was a completely randomized design (CRD) consisting of 5 treatments and 4 replications (10 hens each). The treatments consisted of dried papaya peel meal (DPPM) 0%, 3%, 6%, 9% and 12%. Total feeding trial was 8 weeks. The parameters recorded included egg weight (g/bird)), egg yolk weight (g/bird), yolk index (%), albumen index (%), egg yolk color, egg cholesterol (mg/100g), egg crude protein (%), egg crude fat (%), egg white crude protein (%), egg yellow fat (%),  eggshell calcium (%), eggshell phosphorus (%), blood cholesterol (mg/dl), blood LDL cholesterol (mg/dl), and blood HDL cholesterol (mg/dl) of the laying hens. The results showed that feeding birds with 12 %   increased egg yolk weight, egg yolk color, egg crude fat, egg yellow fat, egg cholesterol, egg shell calcium, egg shell phosphor, blood cholesterol, blood HDL. Moreover there were no significant differences in egg weight, yolk index , albumen index, egg crude protein, egg white crude protein and blood LDL. In Conclusion, DPPM diets can be fed to the laying hens up to 12 % to produce eggs without negative effects on the egg quality.ransomized design (CRD) consisting of 5 treatments and 4 replications (10 hens each). The treatments made use of dried papaya peel meal (DPPM) 0%, 3%, 6 %, 9 % and 12 %. Total feeding trial was 8 weeks . The parameters recorded included egg weight (g/bird), egg yolk weight (g/bird), yolk index (%), albumen index(%), egg yolk calor, egg cholesterol (mg/100g), egg crude protein (%), egg crude fat (%), egg white crude protein (%), egg yellow fat (%), eggshell calsium (%), eggshell phosphorus (%), blood cholesterol (mg/dl), blood LDL Cholesterol  (mg/dl), and blood HDL cholesterol (mg/dl) of the laying hens, The results showed that feeding dried papaya peal meal in cinclusion 12 % increased egg yolk weight, egg yolk color, egg crude fat, egg yellow fat, egg cholesterol,  egg shell calsium, egg shell prosphor, blood cholesterol, blood HDL. Moreover there were no significant diffirence in egg weight, yolk index, albumen index, egg crude protein, egg white crude protein and blood LDL. In conclusion DPPM diets can be fed to the laying hens up to 12 % to produce eggs without negative effects on the egg quality.

THE EFFECT OF GRADED LEVELS OF NICARBAZIN ON REPRODUCTIVE PERFORMANCE OF LAYING HENS

1989 ◽  
Vol 69 (3) ◽  
pp. 757-764 ◽  
Author(s):  
S. LEESON ◽  
L. J. CASTON ◽  
J. D. SUMMERS
Keyword(s):  
Reproductive Performance ◽  
Feed Intake ◽  
Egg Production ◽  
Visual Loss ◽  
Laying Hens ◽  
Marked Effect ◽  
Significant Loss ◽  
White Leghorn ◽  
Egg Weight ◽  
Egg Shell

Three experiments were undertaken to investigate the coccidiostat, nicarbazin, on reproductive performance of layers. In trial 1, levels of 0, 5, 10, 20, 40, 80, 125, and 200 ppm nicarbazin were fed to White leghorn laying hens for 5 wk. By the 2nd week of nicarbazin treatment, egg production was significantly reduced in birds fed 125 and 200 ppm (P < 0.05). Similarly, increasing levels of nicarbazin resulted in decreasing egg weights (P < 0.01) and feed intake was significantly decreased. However, by the 2nd week post-nicarbazin treatment, egg production, egg weight, and feed intake had returned to normal. Nicarbazin had no effect on egg shell deformation or body weight. Nicarbazin had a marked effect on hatchability; levels of 125 and 200 ppm reduced hatchability significantly (P < 0.01) as well as producing an increased incidence of malpositions and malformations. When nicarbazin was withdrawn from the diet, hatchability returned to pretreatment values although malpositions and malformations were still in evidence. Experiments 2 and 3 were designed to study the effect of nicarbazin on production of brown-shelled eggs. In the 2nd experiment 0, 5, 10, 20, and 40 ppm of dietary nicarbazin resulted in significant loss of shell color at 20 and 40 ppm, whereas in exp. 3 with levels of 0, 80, 125, and 200 ppm, brown eggs lost virtually all their color. It is concluded that the adult White Leghorn bird can tolerate up to 125 ppm nicarbazin without significant (P < 0.01) loss of reproductive performance although lower levels show a trend for reduced production. Hatchability is depressed with nicarbazin levels in excess of 80 ppm, while trace levels will produce a visual loss of color in brown-shelled eggs. Key words: Layer, coccidiostat, reproductive performance

Assessing the response of hen weight, body composition, feather score, egg quality, and level of excreta nitrogen content to digestible balanced protein intake of laying hens

2018 ◽  
Vol 98 (4) ◽  
pp. 619-630 ◽  
Author(s):  
D. Kumar ◽  
C. Raginski ◽  
K. Schwean-Lardner ◽  
H.L. Classen
Keyword(s):  
Egg Production ◽  
Diet Composition ◽  
Laying Hens ◽  
Egg Quality ◽  
N Content ◽  
Shell Quality ◽  
Randomized Design ◽  
Completely Randomized Design ◽  
Egg Shell ◽  
Level Of Significance

Ideally balanced dietary protein is critical for laying hen egg production and feed efficiency, but also affects other important characteristics. This research was designed to study the nonegg production and feed intake response of Lohmann-LSL Lite hens to 550, 625, 700, 775, and 850 mg d−1 of amino acid balanced digestible lysine (Dlys) from 27 to 66 wk of age. Data collection included hen weight (HW), feather scoring, tissue weights, egg specific gravity, egg component weights, and excreta nitrogen (N) content. The experiment was a completely randomized design and level of significance was fixed at P ≤ 0.05. Hen weight (quadratic, Q), pectoralis muscle (absolute, % – Q), and abdominal fat (absolute – linear, L; % – Q) increased with increasing Dlys intake. Although gastrointestinal segment weights and lengths were affected by Dlys intake, interpretation of results was confounded by other aspects of diet composition. Hen feather score (L) and excreta N content (Q) increased, and egg shell quality (L) decreased with increasing Dlys intake. Absolute egg component weights increased with Dlys intake, but effects on proportional weights were Q and relatively minor. In conclusion, balanced Dlys intake affected a variety of practical nonproduction characteristics in laying hens.

scholarly journals Production of laying hens in different rearing systems under hot weather

2017 ◽  
Vol 40 ◽  
pp. 37677
Author(s):  
Daniel Araujo Netto ◽  
Héder José D'Ávila Lima ◽  
Julia Rodrigues Alves ◽  
Bianca Corrêa de Morais ◽  
Mauricio Silva Rosa ◽  
...  
Keyword(s):  
Egg Production ◽  
Laying Hens ◽  
Production Systems ◽  
Egg Yolk ◽  
Feed Conversion ◽  
Negative Effects ◽  
External Quality ◽  
Weight Variation ◽  
Randomized Design

 The environment is very important for the performance of laying hens; thus, techniques are required to improve production systems, providing better welfare for poultry and consequent increase in the quality of the final product, the egg. This study aimed to evaluate the effects of rearing system, on the floor and in cage, on the performance and egg internal and external quality of laying hens. A total of 320 Hysex Brown laying hens, with 34-43 weeks days of age, was distributed in a completely randomized design, with two treatments, floor and cage, with 10 replicates each. The parameters evaluated were: individual feed intake, egg production per replicate, feed conversion per dozen eggs, egg weight; weight and percentage participation of shell, albumen and yolk, specific gravity, body weight variation and viability of birds. The results show that the birds raised on the floor showed best results as to egg production, besides the best internal and external quality, with greater weight of egg, yolk, albumen, shell and with lower losses of eggs. Because of the negative effects of the cage system, in general, hens presented lower results when compared to results of those raised on the floor. 

scholarly journals Optimal dietary concentrations of vitamin C and chromium picolinate for alleviating the effect of low ambient temperature (6.2 degrees C) on egg production, some egg characteristics, and nutrient digestibility in laying hens

2001 ◽  
Vol 46 (No. 9–10) ◽  
pp. 229-236 ◽  
Author(s):  
N. Sahin ◽  
K. Sahin
Keyword(s):  
Vitamin C ◽  
Ambient Temperature ◽  
Shell Thickness ◽  
Egg Production ◽  
Laying Hens ◽  
Chromium Picolinate ◽  
Shell Weight ◽  
Egg Shell ◽  
Haugh Unit ◽  
Low Ambient Temperature

This experiment was conducted to evaluate the effect of vitamin C (L-ascorbic acid) and chromium (chromium picolinate, Cr Pic) on egg production, some egg characteristics, and digestibility of nutrients in laying hens (Hy-Line) reared under a low ambient temperature (6.2&deg;C). Two hundred and ten laying hens (32 week-old) were divided into seven groups, 30&nbsp;hens per group. The treatment groups were designed in a 2 &times; 3 factorial arrangement using two levels of vitamin C (125 and 250 mg/kg of diet) and three levels of chromium picolinate (200, 400, or 800 &micro;g/kg of diet), and control group was fed basal diet. The highest values of performance were obtained if 250 mg/kg vitamin C was supplemented with either 400 or 800 &micro;g Cr per kg of diet. An interaction between vitamin C and chromium for egg production (P&nbsp;= 0.05) and feed efficiency (P&nbsp;= 0.02) was detected. Similarly, egg weight, specific gravity, egg shell thickness, egg shell weight and Haugh unit improved with diet containing 250 mg vitamin C and either 400 or 800 &micro;g Cr per kg of diet (P&nbsp;&pound; 0.05). Digestibility of dry matter (DM), ash, organic matter (OM), crude protein (CP), and ether extract (EE) were higher with higher dietary vitamin C (P&nbsp;&pound; 0.05) and also with higher Cr (P&nbsp;&pound; 0.05). There were no interactions between vitamin C and chromium detected for any parameters measured for egg quality in terms of egg weight, specific gravidity, egg shell thickness, egg shell weight and Haugh unit and digestibility of nutrients (P&nbsp;&sup3; 0.28). Data obtained in the present study shows that a combination of 250 mg vitamin C and 400 &micro;g chromium per kg of diet gave the best results in laying hens reared under a low ambient temperature and a conclusion is suggested that such a diet can be considered as a protective management practice in poultry to alleviate, at least in part, the depressive effect of cold stress on poultry performance.

scholarly journals Slight Disruption in Intestinal Environment by Dextran Sodium Sulfate Reduces Egg Yolk Size Through Disfunction of Ovarian Follicle Growth

2021 ◽  
Vol 11 ◽  
Author(s):  
Takahiro Nii ◽  
Takashi Bungo ◽  
Naoki Isobe ◽  
Yukinori Yoshimura
Keyword(s):  
Gene Expression ◽  
Oral Administration ◽  
Blood Plasma ◽  
Sodium Sulfate ◽  
Egg Production ◽  
Laying Hens ◽  
Ovarian Follicle ◽  
Egg Yolk ◽  
Dextran Sodium Sulfate ◽  
Intestinal Environment

Intestinal environments such as microbiota, mucosal barrier function, and cytokine production affect egg production in laying hens. Dextran sodium sulfate (DSS) is an agent that disrupts the intestinal environment. Previously, we reported that the oral administration of dextran sodium sulfate (DSS: 0.9 g/kg BW) for 5 days caused severe intestinal inflammation in laying hens. However, the DSS concentration in the previous study was much higher to induce a milder disruption of the intestinal environment without heavy symptoms. Thus, the goal of this study was to determine the effects of a lower dose of DSS on the intestinal environment and egg production in laying hens. White Leghorn laying hens (330-day old) were oral administered with or without 0.225 g DSS/kg BW for 28 days (DSS and control group: n = 7 and 8, respectively). Weekly we collected all laid eggs and blood plasma samples. Intestinal tissues, liver, ovarian follicles, and the anterior pituitary gland were collected 1 day after the final treatment. Lower concentrations of orally administered DSS caused (1) a decrease in the ratio of villus height/crypt depth, occludin gene expressions in large intestine and cecal microbiota diversity, (2) a decrease in egg yolk weight, (3) an increase in VLDLy in blood plasma, (4), and enhanced the egg yolk precursor accumulation in the gene expression pattern in the follicular granulosa layer, (5) an increase in FSH and IL-1β gene expression in the pituitary gland, and (6) an increase in concentration of plasma lipopolysaccharide binding protein. These results suggested that the administration of the lower concentration of DSS caused a slight disruption in the intestinal environment. This disruption included poor intestinal morphology and decreased cecal microbiome diversity. The change in the intestinal environment decreases egg yolk size without decreasing the VLDLy supply from the liver. The decrease in egg yolk size is likely to be caused by the dysfunction of egg-yolk precursor uptake in ovarian follicles. In conclusion, the oral administration of a lower dose of DSS is an useful method to cause slight disruptions of intestinal environment, and the intestinal condition decreases egg yolk size through disfunction of ovarian follicle.

scholarly journals Extraction of Uronic Acid From Sargassum crassifolium and Its Feeding Effects On The Eggs Production and Quality of Lohmann Chicken Eggs

2020 ◽  
Vol 7 (3) ◽  
pp. 264
Author(s):  
Veybe Gresje Kereh ◽  
Ivonne Maria Untu ◽  
Marie Najoan ◽  
T. Lumi
Keyword(s):  
Drinking Water ◽  
Uronic Acid ◽  
Egg Production ◽  
Pathogenic Bacteria ◽  
Laying Hens ◽  
Brown Seaweed ◽  
Egg Yolk ◽  
Egg Mass ◽  
Chicken Eggs

ABSTRACTThe use of antibiotics in chicken feed is currently banned because it can cause resistance to pathogenic bacteria and cause residues in products. This study aimed to see the effect of drinking water containing uronic acid extracted from Sargassum crassifolium (S. crassifolium) on the physical and chemical quality of Lohmann chicken eggs. One hundred and twenty laying hens were divided into 2 groups: (1) chickens given commercial feed containing antibiotics and (2) feed without additional antibiotics. The chickens were randomly assigned to one of the 5 brown seaweed supplementation treatments in drinking water A1=0.0% S.crassifolium (control); A2=2.5% S.crassifolium; A3=5.0% S.crassifolium; A4=7.5% S.crassifolium; A5=10.0% S.crassifolium. The study used a completely randomized factorial design of 5 treatments, 2 factors, and 3 replications. Each replication consisted of 6 heads of laying hens. There were no differences between treatments on the performance of laying hens (egg production, egg weight, egg mass, feed conversion); physical quality (eggshell, egg yolk, egg white, shell thickness, egg yolk, Haugh unit, egg index) and chemistry (superoxide dismutase production, thiobarbituric acid reactive substances (TBARS) and Lohmann chicken egg cholesterol) but there was a difference in feed intake. The uronic acid extracted from S. crassifolium has not been able to increase the production and quality of Lohmann chicken eggs.Keywords: lohmann chicken, quality of eggs, Sargassum crassifolium, uronic acid

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