scholarly journals Effect of Broiler Breeders’ Age on Eggshell Temperature, Embryo Viability and Hatchability Parameters

2016 ◽  
Vol 16 (1) ◽  
pp. 235-243 ◽  
Author(s):  
Sebastian Nowaczewski ◽  
Mateusz Babuszkiewicz ◽  
Sebastian Kaczmarek
Keyword(s):  
Weight Loss ◽  
Incubation Period ◽  
Reproductive Season ◽  
Embryonic Mortality ◽  
Broiler Breeders ◽  
Embryo Viability ◽  
Egg Weight ◽  
Average Temperature ◽  
Total Percentage ◽  
Temperature Controlled

AbstractThe aim of the study was to analyze eggshell temperature, embryo viability, and hatchability parameters of broiler breeders at different ages (26-30, 31-35, 36-40, 41-45, and 46-64 weeks). A total of 33,150 eggs from Ross 308 broiler breeders collected from commercial flocks were used to analyze the following: egg weight and egg weight loss during 18 days of incubation; eggshell temperature controlled on days 3, 14, and 18 of incubation; number of infertile eggs including eggs with dead embryos at early stages of development, that is, in the oviduct or after oviposition; the total percentage of embryonic mortality and the percentage of embryonic mortality at different times of incubation; unhatched, dead after hatching, and culled chicks as well as hatchability percentage from fertilized eggs. The hatchability results of Ross 308 broiler breeders were high from the beginning of reproductive season till the 40th week. However, the study failed to reveal any relationships between hatchability and the egg weight, average temperature of the shell, and egg weight loss during incubation period. The oldest hens, over 45 weeks of age, had the highest mortality of chicks and the greatest share of unhatched chicks.

scholarly journals Effect of egg size and lines on hatching performance of chicks from broiler breeders under selection

2020 ◽  
Vol 45 (1) ◽  
pp. 18-25 ◽  
Author(s):  
A. K. Olutunmogun ◽  
A. U. Umar ◽  
E. O. Adejoh-Ubani ◽  
B. I. Nwagu ◽  
I. A. Adeyinka ◽  
...  
Keyword(s):  
Weight Loss ◽  
Analysis Of Variance ◽  
Egg Size ◽  
Embryonic Mortality ◽  
Size Group ◽  
Broiler Chicks ◽  
Broiler Breeders ◽  
Minimum Loss ◽  
Egg Weight ◽  
Randomized Design

The study was conducted with the objective of evaluating the effect of egg size (small, medium and large) and lines on egg and hatch weight, fertility, hatchability, embryonic mortality and infertile eggs of broiler breeders under selection. A total of 120 broiler chicks were hatched from three different egg sizes (40 chicks per egg size as indicated) from breeder parents at 40 weeks of age. The broiler breeders were mated in a ratio of 1:6. Data obtained were subjected to analysis of variance in a complete randomized design. The result showed that significant (p<0.05) egg weight loss in incubator were recorded with the large egg size group having the minimum loss of 10.85%. The hatch weight was significant (p<0.05) and increased from the small to the large (36.24, 36.73 and 40.22g) egg size group. Line had significant effect (p<0.05) only on the medium egg size: egg weight (sire = 57.50g; dam = 55.00g) and hatch weights (sire = 39.71g; dam = 36.10g). The fertility (94.02, 93.01 and 78.01%), hatchability (87.42, 88.20 and 62.41%) and embryonic mortality (6.58, 9.80 and 15.6%) had significant (p<0.05) differences with the small egg size group performing better excluding the average egg weight, which was then followed closely by medium egg size group. It can be concluded that for higher hatch weight target, the large egg size should be selected but for the purpose of better fertility and hatchability, the medium and small egg sizes should be selected.  

Daily measurements of variation in weight loss of eggs of seven passerine species before and during natural incubation

1982 ◽  
Vol 60 (12) ◽  
pp. 3143-3149 ◽  
Author(s):  
T. H. Manning
Keyword(s):  
Weight Loss ◽  
Linear Regression ◽  
Incubation Period ◽  
Weight Loss Curve ◽  
High Humidity ◽  
Barn Swallow ◽  
Egg Weight ◽  
Passerine Species ◽  
Shell Damage ◽  
Curvilinear Regression

The eggs of one or more clutches of seven passerine species were weighed each day from the day they were laid until hatching. In all seven, the rate of weight loss increased during incubation. This increase was more rapid in the early stages, leading to curvilinear regression. Linear regression was, however, highly significant and explained over 80% of the variation in four species. Curvilinear regression was significant in two other species. The weight loss curve of a single unfertilized Barn Swallow, Hirundo rustica, egg was similar to that of the rest of the clutch until they commenced to pip. The daily weight loss of five unincubated eggs also increased with time. Shell damage was suspected to be the cause of sudden increases in weight loss of individual eggs. A simultaneous drop in weight loss by six clutches was probably caused by high humidity. Other decreases in weight loss may have been caused by rain. Mean weight loss from water vapour conductance through the shell as a percentage of initial egg weight was 0.9 ± 0.08 during the laying period, 12.0 ± 0.72 during the laying period plus the incubation period prior to pipping, and an estimated 14.6 ± 0.85 for the laying period and the whole incubation period.

scholarly journals Tavuklarda Yumurta Şekil İndeksinin Kuluçka Özellikleri Üzerine Etkisi

2015 ◽  
Vol 3 (7) ◽  
pp. 583 ◽  
Author(s):  
Erol Aşcı ◽  
İsmail Durmuş
Keyword(s):  
Weight Loss ◽  
Sex Ratio ◽  
Significant Relationship ◽  
Shape Index ◽  
Fertility Rate ◽  
Embryonic Mortality ◽  
The Other ◽  
Research Station ◽  
Egg Weight

In this study, the effects of egg shape index on hatching characteristics (fertility rate, embryo mortality, hatchability of fertile eggs and hatchability), egg weight loss, chick weight, sex ratio and quality of chicks were investigated. A total of 960 eggs of ATAK- S hybrid parents obtained from Ankara Poultry Research Station were divided into three different groups (SI≤71, 72≤SI≤76, SI≤77) based on shape index and were used. A significant relationship between fertility rate and late embryonic mortality was found in the shape index groups. On the other hand, no differences were found in the rate of weight loss at 18 day, early and middle embryonic mortality, malposition rate, hatchability, sex ratio and chick quality among the shape index groups. It was concluded that shape index affected the hatching results and also that eggs of abnormal shape index should not be used for hatching.

scholarly journals Analysis of changes in egg quality of broiler breeders during the first reproduction period

2012 ◽  
Vol 12 (4) ◽  
pp. 609-620 ◽  
Author(s):  
Helena Kontecka ◽  
Sebastian Nowaczewski ◽  
Marta M. Sierszuła
Keyword(s):  
Shell Thickness ◽  
Egg Quality ◽  
Negative Relationship ◽  
Reproductive Season ◽  
Egg Mass ◽  
Broiler Breeders ◽  
Egg Weight ◽  
Shell Quality ◽  
Morphological Composition

AbstractIn reproductive flocks of poultry it is very important to obtain a large number of eggs with normal structure, optimal morphological composition and interior quality. These elements have very significant influence on the biological value of the egg, which determines normal development of the embryo. The aim of the study was to analyse the physical characteristics, morphological composition and quality of individual components of the eggs of Cobb 500 broiler breeders during the first year of reproduction. The research material was hatching eggs (280 pcs), whose quality was assessed 7 times in the reproductive season at 5-week intervals. The eggs were examined when the hens were aged 26, 31, 36, 41, 46, 51 and 56 weeks (40 eggs for each age). The following characteristics were evaluated: egg weight (g); egg shape index (%); egg specific gravity (g/cm3); shell thickness (mm); average number of pores in the eggshell (pcs/0.25 cm2); yolk, white and shell weight (g) and their percentage in the egg mass; yolk index (%) and the number of Haugh units. The investigations proved that as the reproductive season of hens progressed, the weight of their eggs increased. Above all, this was due to the increase in the yolk weight, because its percentage in the egg weight rose with bird age, whereas the percentage of the white decreased. However, as the reproductive season progressed the quality of both the yolk and white deteriorated. No negative relationship between the age of hens and shell quality (weight, thickness) was observed. Only when the birds were aged 56 weeks, the shell thickness was found to be significantly smaller.

scholarly journals Effect of hen age and storage time on egg weight loss and hatchability results in turkeys

2017 ◽  
Vol 17 (2) ◽  
pp. 447-462 ◽  
Author(s):  
Monika Stępińska ◽  
Emilia Mróz ◽  
Magdalena Krawczyk ◽  
Kamil Otowski ◽  
Alina Górska
Keyword(s):  
Incubation Period ◽  
Water Loss ◽  
Storage Period ◽  
High Water ◽  
Embryonic Mortality ◽  
High Rate ◽  
Water Metabolism ◽  
Egg Weight ◽  
Egg Storage ◽  
Hatching Eggs

Abstract The aim of this study was to determine the effect of egg water loss during storage and incubation on hatch rates in heavy-type broad-breasted white BUT Big 6 turkeys. Turkey hens started laying eggs at 30 weeks of age. In weeks 2, 8, 16 and 21 of the laying season, 1512 eggs were selected randomly and divided into 4 groups of 378 eggs each. The groups of eggs were stored for 7, 10, 13 or 17 days before incubation. At the beginning and end of the storage period and on days 9, 15, 21 and 24 of incubation, eggs were weighed to determine the percent water loss relative to the egg’s weight. Four incubation cycles of 378 eggs each were performed for each storage period. A total of 16 incubation cycles were carried out (4 weeks of the laying season × 4 egg storage periods) and the following parameters were determined (%): egg fertilization, dead embryos, unhatched eggs and hatchability results from fertilized eggs. The percentages of dead embryos and unhatched poults with physical defects and abnormal position were determined in hatchery waste from each incubation cycle. Egg water loss varied throughout storage and reached 0.57% of total egg weight after 7 days, 0.79% after 10 days, 0.87% after 13 days and 1.28% after 17 days (P≤0.05). After 7 days of storage, egg water loss during a 15-day and 21-day incubation period reached 5.76% and 8.72%, and lower values were noted after 17 days of storage (P≤0.05). Egg water loss of 1.28% during storage resulted in a high rate of early embryonic mortality (14.81%) and a low hatch rate (72.12%) (P≤0.05). High water loss in stored eggs contributed to a higher percentage of congested embryos. During storage, egg water loss reached 0.72% in week 2 of the laying season, 0.78% in week 8 and ≥1% in weeks 16 and 21 of the laying season (P≤0.05). Egg water loss during a 21-day incubation period was similar in weeks 2, 8 and 16 of the laying season, and lower in week 21 (P≤0.05). The hatchability of turkey eggs was lowest in weeks 16 and 21 of the laying season (P≤0.05). Low water loss during incubation contributed to a high rate of late embryonic mortality (13.2%). High water loss during egg storage is accompanied by lower water loss during incubation. Water loss should be monitored after storage and on days 15 and 21 of incubation to evaluate water metabolism in hatching eggs.

Impact of Hatching Egg Disinfection on Hatching Characteristics and Chick Embryos

2019 ◽  
Author(s):  
Gamal M. Bekhet
Keyword(s):  
Hydrogen Peroxide ◽  
Weight Loss ◽  
Sodium Chloride ◽  
Embryonic Mortality ◽  
Chick Embryos ◽  
Egg Weight ◽  
Significant Percentage ◽  
Treatment Groups ◽  
Hatching Eggs ◽  
Chemical Disinfectant

Four thousand two hundred hatching eggs were obtained from Bandarah chicken to evaluate the effect of chemical and natural egg disinfectants and fumigation on egg weight loss, embryonic mortality, hatchability, hatch time, chick weight and chick weight loss. Three incubation trials were done; each one contained 1400 hatched eggs and divided into fourteen treatments (100 eggs per each). First treatment (T1) was used as control without any treatment, eggs of second treatment (T2) were dipped in water and third treatment in alcohol, whereas T4, T5, T6, T7 treated egg groups were dipped in chemical disinfectant (sodium chloride, betadine, hydrogen peroxide, virkon S). Egg of T9, T10, T11, T12, T13 and T14 groups were dipped in natural disinfectants (oregano, cumin 02 and 04 % and oregano+ cumin01 and 02), respectively. The thickest eggshell (031mm) was recorded for betadine group in infertile eggs compared with those for formaldehyde fumigation and oregano+cumin 01% oregano+cumin 01% group (035mm) compared with all other treatment groups. Formaldehyde fumigation recorded the worst and highest significant percentage of embryonic mortality (1795%). Highest significant percentages for hatchability of fertile egg were recorded in egg groups with oregano 02 and 04% (9687 and 9576%), cumin 02 and 04 % (9551and 9715%) and oregano+cumin01 and 02% (9619 and 9615%), respectively.

scholarly journals Relationship Between Broiler Breeder's Age and Egg Weight Loss and Embryonic Mortality During Incubation in Large-Scale Conditions

2001 ◽  
Vol 10 (3) ◽  
pp. 221-227 ◽  
Author(s):  
K. Tona ◽  
F. Bamelis ◽  
W. Coucke ◽  
V. Bruggeman ◽  
E. Decuypere
Keyword(s):  
Weight Loss ◽  
Large Scale ◽  
Embryonic Mortality ◽  
Egg Weight
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