Compare the chick length and weights of the Ross broiler breeder in different ages and farms (original) (raw)
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Effects of egg size (weight) and age on hatching performance and chick quality of broiler breeder
A total of 2000 Hubbard Classic females and 180 males (male to female ratio 1:11) close to standard body weights were selected and managed separately in the same shed. The objective of this experiment was to study the effects of egg size (small, medium and large) at mid (45 weeks) production cycle and flock age (30, 45 and 60 weeks old) on hatching egg weight loss, fertility, hatchability traits, chick weight and chick yield in a commercial Hubbard Classic broiler breeder flock. The results showed that minimum egg weight loss (P ≤ 0.05) was recorded in large egg size group at different incubation periods and egg weight losses decreased with advancing the age of breeder hens. Maximum fertility and hatchability (P ≤ 0.05) was noticed in small egg size group, followed by medium and large egg size groups. However, maximum embryonic mortality (P ≤ 0.05) during incubation and higher percentage of infertile eggs was recorded in large size egg group, followed by medium and small egg size groups. Low fertility, hatchability was recorded (P ≤ 0.05) in older hen at the age of 60 weeks. The chick weight and chick length were amplified (P ≤ 0.05) with increasing the egg size. However, egg size was not influenced (P ≥ 0.05) on chick yield. The chick weight, chick yield and chick length were improved (P ≤ 0.05) with advancing age of broiler breeder.
The Effect of Broiler Breeder Ages on the Qualitive and Quantitive Properties of the Egg
American Journal of Animal and Veterinary Sciences, 2012
Broiler breeder age is one of the most important factors that affects on egg properties. However by increasing the age of broiler breeder flock, the quality of eggs and consequently the quality of their chick products would be changed. In order to study the effect of broiler breeder flock age on the various aspects of chick products, 300 fertilizable eggs were selected randomly, from 3 broiler breeder farms. Selected eggs were collected from broilers that were 30 (young), 36 (peak), 43(after peak), 53 (old), 60 (very old) and 82 (molted) weeks old. Collected eggs were stored during 3 to 4 days in the ambient temperature. Qualitive and quantitive aspects of eggs including egg weight, albumen height yolk, height thickness of egg shell, yolk color, Albumen and yolk PH and Hugh unit were studied. Trait Analysis was done by ANOVA procedure of SAS statistical software. To compare the means, Duncan test was used. The effects of age and breeder farms on the egg weight, yolk color, yolk and albumen PH, yolk and albumen height, shell egg thickness and Hugh unit were significant (p<0.05). The lowest difference was seen between the age of 53, 60 and 82 week old (p<0.05). Albumen PH and alkaline is increased by increase of age, but yolk PH is the variance. Influence of age on the traits including yolk and albumen height and Hugh unit was decreased and the color of yolk was faded by increasing age. According to obtained results from these research performances of ages of 53, 60 and 82 weeks are close together. We could conclude that older broiler breeder flocks are produce the better qualitive and quantitive properties of egg products. Since most poultry enough information about the quality of breeder chickens and the best age to have chickens, using the results of this study can be answered many questions.
Effect of Broiler Breeders Age on Hatchability, Candling, Water Loss, Chick Yield and Dead in Shell
Water loss, chick yield and DIS analysis are all important factors in quality investigation of both the chick and hatchery performance. The age of breeders affect the hatchability, egg weight, chick weight water loss, Candling and DIS. In this experiment the broiler breeder were divided into three groups on the basis of age, young (24-30 weeks), prime (31-50 weeks) and old (51+ weeks) to investigate the effects of hatchability , egg weight, chick weight , Water loss, chick yield and DIS along mal-position and mal-formations. Hatchability (81.
A total of 720 one day-old chicks of three different commercial broiler strains (Isa, Ross and Arbor Acres), were obtained from hatching eggs stored for 0, 7 and 14 days under 70-80% relative humidity and 16-18 ºC. Eighty chicks of each strain and storage period were used in the study. Chicks of each storage period were randomly divided into 4 replicates of 20 chicks in each of equal group weight and randomly allotted to 1m x1.5 m pens located in an environmentally controlled house. Birds were fed a starter diet to 3 weeks, followed by finisher diet to 5 weeks of age, which contain 21.5 and 18.5% crude protein and 2950 and 3100 Kcal /kg metabolizable energy, respectively. Birds in each replicate were group weighed again at 1, 2, 3, 4 and 5 weeks of age and weekly feed intake and daily mortality were recorded. Measurements were taken for body weight gain, growth rate, feed intake and feed conversion ratio from day one to 2, 3, 4 and 5 weeks of age. The results of study reported herein revealed that strain and storage period of hatching eggs had a pronounced effect upon most studied traits at most studied age periods. The results also showed that broilers of Arbor Acres and those of hatching eggs stored for seven days or less had in general the best growth performance.
Advancements in Life Sciences, 2023
The most significant component in influencing the performance of the laying flock is egg size. Though commercial broiler farming is in operation, little is known about how breeder hatching egg weight during middle (45 th week) phase of yield production effects on qualities of egg & chick and post-hatch Hubbard broiler growth performance. Methods: At 45 weeks of age, hatching eggs (n=930) from a commercial broiler breeder flock were gathered as well as classified into 3 groups of egg weight: short (60.25±0.25g), medium (65.10 ± 0.31g), and large (70.07 ± 0.61g). These eggs more classified into 2 groups i.e., egg quality parameters and incubation & post hatch performance metrics. Eggs for performance measures related to incubation and post hatch as well as eggs for quality factors are two further categories into which these eggs are divided. Result: The proportion of shell weight was higher in the eggs obtained from small egg group. The size of the eggs had an effect on the shape index and specific gravity, with larger eggs having lower values. Both male and female chicks' weight and length were significantly influenced by egg size. Data of the body weight gain indicated that as broilers age increases, impact of egg weight on post-hatch performance of chicks' decreases. Up until age 21, female chicks' body weight gain was highly influenced by egg size. The female chicks' feed conversion ratio at day 21 of life was considerably impacted by various egg-weight categories, while it had no effect on male and female chicks at day 35. Conclusion: Egg size favorably influenced the features of the chicks (weight and length) but without any impact on feed consumption, conversion ratio & mortality or ultimate overall live weight of the broilers.
Analysis of changes in egg quality of broiler breeders during the first reproduction period
Annals of Animal Science, 2012
In 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 i...
Primary Audience: Broiler farmers, hatchery managers, broiler breeder farmers, researchers SUMMARY The objective of the present study was to determine the effect of broiler breeder egg weight on egg quality, chick quality, and broiler performance using Hubbard Classic broiler breeder flock. Hatching eggs from a commercial broiler breeder flock (Hubbard classic strain) were obtained at the age of 60 wk and divided into 3 egg-weight categories, namely small, medium, and large. For this purpose, 930 eggs having weights 63.09 ± 0.21, 68.85 ± 0.23, and 74.81 ± 0.11g were divided into 3 egg categories labeled small, medium, and large respectively. We further divided these eggs into 2 categories, eggs for quality parameters and eggs for incubation and posthatch performance parameters. Eggs from the small egg category had greater proportion of the shell weight and more shell strength. Egg weight did not significantly affect the albumen and yolk weight percentage. Egg weight affected the shape index and specific gravity for which lower values were observed for large eggs. Egg weight positively affected the chick weight, chick yield, and chick length (P < 0.05) of both male and female chicks. Results of the body weight gain showed that effect of egg weight on the posthatch performance of chick diminishes with the age of broilers. Egg weight significantly affected the body weight gain of male and female chicks up to 3 wk of age. Egg weights did not significantly affect the feed intake and mortality of broiler. Different egg-weight categories significantly affected the feed conversion ratio of female chicks at wk 2 and 3 of age and did not affect the feed conversion of male and female chicks at the end of wk 5. In conclusion, egg weight positively affected the chick characteristics (e.g., chick weight, chick length) and did not affect the final live body weight, feed conversion ratio, feed intake, and mortality in broilers.
Effects of Broiler Breeders Age on Egg Quality Characteristics and Their Correlation Coefficients
Journal of World's Poultry Research, 2021
The current study was designed to assess the effect of Ross breeder hens' age on the egg qualities and their correlations. The external and internal qualities of eggs were compared, and their correlation coefficients as influenced by the age of breeder hens were determined. A sample of 300 Ross breeder hen eggs was obtained from the Ross breeder farm with 100 eggs drawn from each laying period of ages, namely 30, 45, and 60 weeks. Measured parameters included egg weight, egg length, egg width, shell weight, and shell thickness. Data were evaluated for linear and quadratic effects using polynomial contrasts. Response surface regression analysis was applied to describe the responses of egg quality to the aging of breeder hens. The results showed that egg weight, egg length, egg width, shell weight, egg yolk, egg content, egg volume, shell percentage, albumen weight, egg shape index, and egg surface area increased over time. Haugh unit and thick albumen indicated that the eggs in all age groups were fresh and had high quality. Shell thickness was constant in all age groups. Egg weight was significantly correlated with egg length, width, yolk (length, width, weight, and height), and shell weight. In conclusion, the egg quality improved as the hens' age increased implying that age is an effective factor in improving the quality of eggs.
Journal of Animal and Plant Sciences
The present study was conducted at a commercial hatchery with the objective to evaluate the chick quality (average day-old chick weight, chick to egg ratio, A+ Chicks, A, US and B grade chicks) from fertile eggs of Hubbard broiler breeder strain during four production phases, categorized into 3 egg weights and 3 different storage periods maintained at. For this purpose, eggs during 4 production phases (pre-peak; 25-28, peak; 29-36, post-peak; 37-52 and terminal; 53-56 th weeks of age) were categorized into three different weight categories (small, medium and large; subject to change in each production phase), stored for three different durations (1, 4 and 7-days) and replicated 6 times. A total of 93312 fertile eggs; pre-peak: 11664, peak: 23328, post-peak: 46656 and terminal: 11664 eggs in 4 production phases were collected. During each week of the experiment, a total number of 972 eggs per storage period from three egg weight categories replicated 6 times (each replicate containin...