Effects of egg weight on the egg quality, chick quality, and broiler performance at the later stages of production (week 60) in broiler breeders

Iqbal, Javid; Mukhtar, Nasir; Rehman, Zaib Ur; Khan, Sohail; Ahmad, Tauseef; Anjum, Muhammad S.; Pasha, Riaz Hussain; Umar, Sajid

doi:10.3382/japr/pfw061

Cited by 50 publications

(39 citation statements)

References 32 publications

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“…Wilson [4,6,10] report the relative share of the chick mass in the egg mass fluctuating from 67 to 70%, from 62 to 76%, and from 68.43 to 69.81%, respectively. Similar conclusions related to effects of age and the egg weight group on incubation values in the Hubbard Classic broiler parents were made by [13,14]. In the light egg weight group (average mass 63.09 g), average mass of newly hatched male chicks was 43.33 g; in the medium weight group (68.85 g), it was 48.40 g; and in the heavy weight group (74.81 g), it was 52.36 g. In case of female chicken, the average mass was 43.29, 48.24, and 52.38 g, respectively.…”

Section: Discussionsupporting

confidence: 70%

“…Studies of Skewea et al [1][2][3][4][5][6][7][8][9][10][11][12][13][14] were conducted, among other reasons, to demonstrate effects of age of different broiler parent flocks of various hybrids on incubation values of eggs (fertilization rate, hatchability, and the quality of one-day old chicken), as well as their phenotype correlation. The general observations would be that the egg mass and the newly hatched chicken mass increases with the age of the broiler parents; the fertilization and hatchability rate reaches its peak in the middle of the production cycle; relative share of the chick in the egg mass increases slightly with the age; and while the egg shape index in various stages of the production cycle demonstrated substantial variability.…”

Section: Introductionmentioning

confidence: 99%

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Effects of Morphometric Indicators on Incubation Values of Eggs and Sex of the Chicks of the Light Hen Hybrids

Milojevic¹,

Jokić²,

Mitrovic³

2020

Animal Models in Medicine and Biology

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The aim of this study was to establish incubation values of eggs (egg fertilization, absolute and relative embryo mortality, and hatchability of male and female chicks), morphometric indicators (preincubation egg mass; length, width, and egg shape index; hatched female and male chicken mass and their relative share in the egg mass before incubation), and the phenotype correlation between some traits in the younger parent flock (YF 33-33 weeks) and the older flock (OF 49-49 weeks) of the light Institut de Sélection Animale (ISA) Brown hybrid. With regard to incubation values, the younger flock (YF 33) demonstrated better incubation results than the older flock (OF 49). The egg fertilization rate was 95.24 and 94.22%, respectively, chick hatchability as the percentage of the total of incubated eggs was 86.51 and 84.89%, respectively, and chick hatchability as the percentage of the total of fertilized eggs was 90.83 and 90.09%, respectively. Embryo mortality rate was 8.73 and 9.17% (YF 33), and 9.33 and 9.91% (OF 49). Regardless of the parent flock age, eggs that hatched female chicks had lower values of observed morphometric traits than those that hatched male chicks, except for the egg shape index (77.49-77.47%, respectively) which was higher by 0.02% in eggs which hatched female chicks, but this difference was not statistically significant (P > 0.05). Contrary to effects of the chick sex, the parent flock age had considerably larger effect on observed morphometric traits, as all morphometric indicators of eggs and hatched chicks of both sexes in the older flock (OF 59) had statistically significantly higher values (P < 0.001) than in the younger flock (YF 33). The only exception is the relative share of the chicken in the egg mass where the measured difference (−0.03%) was not statistically significant (P > 0.05). The phenotype correlation coefficients determined (r p) between the egg mass before the incubation period and the egg shape index were statistically significant (P < 0.01; P < 0001), except between the egg mass of eggs which hatched female chicks and the egg shape index in the young flock (YF 33), whereby the calculated coefficient (r xy = 0.107) was not statistically confirmed (P > 0.05). Furthermore, the egg mass and hatched chicken mass of both sexes increased with the age of the parent flock, and statistically significant absolute phenotype correlation (P < 0.001) was determined between these two indicators.

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Section: Discussionsupporting

confidence: 70%

Section: Introductionmentioning

confidence: 99%

Effects of Morphometric Indicators on Incubation Values of Eggs and Sex of the Chicks of the Light Hen Hybrids

Milojevic¹,

Jokić²,

Mitrovic³

2020

Animal Models in Medicine and Biology

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“…Eggs layed at the beginning of the day, up to 7 a.m., are heavier (Zakaria & Omar, 2013). According to Iqbal et al (2017), the egg weight influences the eggshell percentage and thickness, shape index and specific gravity which reduce with the weight increase.…”

Section: Is the Eggshell Quality Influenced By The Egg Weight Or The mentioning

confidence: 99%

Is the Eggshell Quality Influenced by the Egg Weight or the Breeder Age?

Crosara

Pereira

Lellis³

et al. 2019

Braz. J. Poult. Sci.

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“…Depression in growth of AI chicks can be directly associated with the chick quality, and during AI, the chick quality would have compromised because of high pathogenic load, particularly of E. coli , SP, and MG, which might have exerted negative impact on growth performance. Therefore, it is imperative that AI might have retro impact on hygienic status of embryo which kept the birds under stress particularly in early life in comparison to NM ( Willemsen et al., 2008 , Iqbal et al., 2017 ). It seems that method of insemination would have indirectly regulated the growth performance by meddling with chick's hygiene ( Li et al., 2018 ).…”

Section: Resultsmentioning

confidence: 99%

Effects of different mating strategies in broiler breeder during peak and postpeak phase on subsequent broiler performance

et al. 2020

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Two experimental trials on commercial broiler (Ross-308) were conducted to evaluate the carryover effect of artificial insemination ( AI ) in parent flock ( PF ) kept in cages ( C ), and on floor ( F ) in comparison to natural mating ( NM ) in floored PF. A total of 900 broiler chicks were obtained from 38-week-old PF (peak production), representing C, F, and NM evenly during first trial, whereas in second trial, similar number of chicks were obtained from same PF during postpeak phase (55 wk of age). Subsequent effects of AI and NM in PF were evaluated by bacteriology, posthatch mortality, growth performance, immune response, and carcass traits on experimental birds (broiler). Chicks being produced through NM exhibited significantly ( P ≤ 0.05) improved growth performance (feed conversion ratio, weight gain, European efficiency factor) along with the least ( P ≤ 0.05) posthatch mortality and prevalence of Escherichia coli , Salmonella Pullorum , and Mycoplasma gallisepticum . Moreover, the experimental chicks obtained from floored PF subjected to AI particularly during postpeak phase expressed the highest ( P ≤ 0.05) contamination of the said pathogens along with posthatch mortality. However, immune response against New Castle disease and infectious bronchitis vaccines and slaughtering parameters remained nonsignificant ( P > 0.05) among the 3 treatments under both trials. It is concluded that the best growth performance along with the least depletion and microbial load of concerned pathogens were being pertained by the experimental birds representing NM.

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Effects of egg weight on the egg quality, chick quality, and broiler performance at the later stages of production (week 60) in broiler breeders

Cited by 50 publications

References 32 publications

Effects of Morphometric Indicators on Incubation Values of Eggs and Sex of the Chicks of the Light Hen Hybrids

Effects of Morphometric Indicators on Incubation Values of Eggs and Sex of the Chicks of the Light Hen Hybrids

Is the Eggshell Quality Influenced by the Egg Weight or the Breeder Age?

Effects of different mating strategies in broiler breeder during peak and postpeak phase on subsequent broiler performance

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