Effects of Age in Lay and Egg Size on Fertility and Hatchability of Chicken Eggs

Asuquo, B. O.; Okon, B.

doi:10.1080/00128325.1993.11663183

Cited by 10 publications

(10 citation statements)

References 4 publications

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“…Ramaphala and Mbajiorgu (2013) also indicated that large-sized eggs produced chicks with higher chick hatch-weight than medium and small sized eggs. However, contrary to the present findings, Asuquo and Okon (1993) reported that egg size within the intermediate weight hatched heavier chicks than small or large eggs. Furthermore, it is also known that heavier eggs contain more nutrients than small or medium sized eggs (Williams, 1994) and hence as a result, chicks from heavier eggs tend to have more yolk attachment at hatching (Hassan et al, 2005;Woanski et al, 2006).…”

Section: Resultscontrasting

confidence: 56%

Effect of Egg Size on Hatchability and Subsequent Growth Performance of Fayoumi Chicken

Senbeta¹

2017

JAS

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The study was conducted to determine effect of egg-weight on hatchability and subsequent growth performance of Fayoumi breeds. A total of 576 eggs were purposively selected and arranged into three groups of small, medium and large sizes each with 192 eggs. Each egg group was randomly sub-divided into three replicates of 64 eggs in a CRD. Eggs were incubated for 21 days and chicks hatched on the same day were counted and individually weighed. Chicks were intensively raised on deep litter system for eight weeks on same diet, but kept separately according to their initial treatment of eggs. Data was analyzed by GLM of SAS and separated for means by Duncan's multiple-range test. The study result revealed that egg size had effect on hatchability and strongly influenced all parameters measured during the brooding periods. It has significant effect on day-old weight, body weight, final weight gain, final feed conversion and mortality. Chicken producers may opt for medium-sized eggs principally for the purpose of better hatchability and feed conversion ratio whereas large sized eggs for better hatchling weight, weight gain and survivability. It is also recommended that future work may also address the effect of egg size on the same parameters at grower or pullet stage performance and specific diseases which cause paramount chick mortality should be identified.

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Section: Resultscontrasting

confidence: 56%

Effect of Egg Size on Hatchability and Subsequent Growth Performance of Fayoumi Chicken

Senbeta¹

2017

JAS

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“…Tona et al (2002) found similar findings in broiler chickens. However, Asuquo & Okon (1993) observed that egg size within the intermediate weight range of 45 to 56 g hatched heavier chicks than smaller or larger eggs. No biological reasons were suggested for such an observation.…”

Section: Resultsmentioning

confidence: 94%

Effects of egg weight on hatchability, chick hatch-weight and subsequent productivity of indigenous Venda chickens in Polokwane, South Africa

Ng’ambi¹,

Thamaga²,

Norris³

et al. 2014

SA J. An. Sci.

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________________________________________________________________________________ AbstractA study was conducted to determine the effect of egg weight on hatchability, chick hatch-weight, mortality and subsequent productivity of indigenous Venda chickens. Three hundred and sixty indigenous Venda chicken eggs were collected for a period of a week and selection was done based on the weight of the eggs. A complete randomized design was used, with four treatment weights, each with 90 eggs. The four treatment weights were as follows: below 49 g, between 50 and 59 g, between 60 and 69 g, and above 70 g. Egg weight was positively and strongly correlated with egg hatchability (r 2 = 0.727) and chick hatch-weight (r 2 = 0.953). Heavier-sized eggs hatched chicks had higher mortality rates. Growth rate and live weight of the chickens were optimized at different egg weights of 56 (r 2 = 0.657) and 60 (r 2 = 0.870) g, respectively, for chickens aged 1 to 7 weeks, and egg weights of 61 g (r 2 = 0.514) and 60 g (r 2 = 0.948), respectively, for chickens aged 8 to 13 weeks. It is concluded that indigenous Venda chicken egg weight affects hatchability, hatch-weight, mortality and subsequent productivity of the chickens. It is concluded that production variables were optimized at different egg weights. This means that the selection of eggs for incubation will depend on the parameter in question.________________________________________________________________________________

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“…Although egg size can be manipulated using fat levels, protein and enzymes, some other factors such as age and body weight of the hen, yolk weight and nutrient intake can influence egg size. Asuquo and Okon (1993) studied the effects of age in lay and egg size on fertility and hatchability of eggs. The workers noticed that egg size within the intermediate range of 45-56 g would hatch better than small eggs.…”

Section: Introductionmentioning

confidence: 99%

Effects of egg size (weight) and age on hatching performance and chick quality of broiler breeder

Iqbal

Khan²,

Mukhtar

et al. 2014

Journal of Applied Animal Research

107

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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.

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Effects of Age in Lay and Egg Size on Fertility and Hatchability of Chicken Eggs

Cited by 10 publications

References 4 publications

Effect of Egg Size on Hatchability and Subsequent Growth Performance of Fayoumi Chicken

Effect of Egg Size on Hatchability and Subsequent Growth Performance of Fayoumi Chicken

Effects of egg weight on hatchability, chick hatch-weight and subsequent productivity of indigenous Venda chickens in Polokwane, South Africa

Effects of egg size (weight) and age on hatching performance and chick quality of broiler breeder

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