Interrelationships of egg size, chick size, posthatching growth and hatchability

Wilson, H. R.

doi:10.1079/wps19910002

Cited by 270 publications

(233 citation statements)

References 74 publications

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“…1, 2, 3, 4 e 5, respectivamente. Estes resultados podem ser explicados pelo fato de ovos maiores apresentarem maiores peso de gema e concentração de proteínas e fosfolipídios ao final do período de incubação, quando ocorre a transferência de nutrientes do saco vitelino para o embrião, e resultam em pintos mais pesados ao nascer, e seguido de melhor desenvolvimento deles (Noble et al, 1986;Ding e Lilburn, 1996 (Pinchasov, 1991;Wilson, 1991 9,6 Ab 9,4 Bb 9,2 Cb 9,4 15-16,9 10,7 Aa 10,7 Aa 10,4 Ba 10,6 Média 9,6 9,4 9,3…”

Section: Resultsunclassified

“…Isso ocorre em razão das associações existentes entre peso do ovo e peso do pinto, e do peso do pinto e peso ao abate (Wilson, 1991). A prática rotineira adotada no incubatório − classificar ovos pelo peso e idade da matriz para gerar lotes e pintos de corte mais homogêneos e facilitar o manejo durante o período de criação, a regulagem de equipamentos no galpão e o abate − é decorrente da correlação positiva entre o peso do ovo e o peso do pinto.…”

Section: Introductionunclassified

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Efeito da interação idade da matriz x peso do ovo sobre o desempenho de codornas de corte

Corrêa¹,

Silva²,

Corrêa

et al. 2011

Arq. Bras. Med. Vet. Zootec.

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Section: Resultsunclassified

Section: Introductionunclassified

Efeito da interação idade da matriz x peso do ovo sobre o desempenho de codornas de corte

Corrêa¹,

Silva²,

Corrêa

et al. 2011

Arq. Bras. Med. Vet. Zootec.

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“…Broiler chicks hatch in a time range of 480 to 510 hours. Factors such as breeder age, egg weight, hatchable egg storage conditions, season (Wilson, 1991), and incubation temperature (French, 1994;Wilson, 1991) influence total incubation time. Vieira et al (2005) observed that 90% of eggs hatched at 485 hours and that the hatchlings remained for 19 hours in the hatcher to allow the remaining 10% to hatch.…”

Section: Discussionmentioning

confidence: 99%

The Effects of Different Eggshell Temperatures Between Embryonic Day 10 and 18 on Broiler Performance and Susceptibility to Ascites

İpek

Şahan

Sözcü

2015

Rev. Bras. Cienc. Avic.

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The aim of the current study was to determine the effects of low (33.3-36.7 ˚C), control (37.8-38.2 ˚C) and high (38.9-40.0 ˚C) eggshell temperatures (ESTs) between days 10-18 of incubation on broiler performance and susceptibility to ascites. The effects of different ESTs on hatchling weight were significant. The highest residual yolk sac weight (7.7 g) and relative yolk sac weight (18.7%) were observed in high EST group, whereas the highest yolk-free body weight (36.22 g) was obtained in the control group. Relative post-hatch heart weight was lower in the high EST group (0.64%) compared with the control (0.84%) and low (0.88%) EST groups. At 6 weeks of age, body weights of broilers of the low, control, and high EST groups were 2172.6, 2543.9, 2282.6 g respectively. During the 6-week life span, the feed conversion ratio of broilers in the low (1.86) and high (1.83) EST groups was significantly worse than of those in the control EST group (1.68). Higher packed cell volume (PCV) and red blood cell (RBC) values were obtained in the high EST group relative to the other groups, whereas hemoglobin (Hb) level was lower in the control group than in the others. The relative heart weights and right ventricular to total ventricular (RV:TV) ratio for low, control, and high EST group were 0.46, 0.40, 0.37 g and 0.27, 0.28, 0.33% respectively. In conclusion, incubation length, yolk sac absorption, residual yolk sac weight, yolk-free BW, post-hatch performance, and heart, blood parameters, abdominal fluid accumulation at slaughter age are affected by changes in EST between incubation days 10 to 18.

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“…(Mis)Match of maternal-offspring environment (Wilson, 1991), hatch weight was not included in the model. This is because correcting for hatch weight would discard the effect of maternal nutrition that may exist on offspring development before hatch.…”

Section: Statistical Analysesmentioning

confidence: 99%

Effect of match or mismatch of maternal–offspring nutritional environment on the development of offspring in broiler chickens

Waaij

Brand

Arendonk

et al. 2011

Animal

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In mammals, maternal food restriction around conception and during pregnancy results in low birth weight and an adjusted growth trajectory of offspring. If, subsequently, the offspring are born into a food-abundant environment, they are at increased risk of developing obesity, type 2 diabetes, hypertension and renal dysfunction. Here, we show similar effects of maternal undernutrition on hatch weight, growth and fat deposition in offspring of birds (domestic chicken). Both mothers and offspring were fed either ad libitum or restricted in a two-by-two factorial design, resulting in two matched and two mismatched maternal-offspring nutritional environments. Offspring of ad libitum mothers grew heavier than those of restricted mothers, possibly due to the larger muscle mass. Ad libitum-fed offspring, especially females, of restricted mothers were lighter at hatch, and were heavier and had more abdominal fat at 6 weeks of age than daughters of ad libitum-fed mothers. These results suggest a common mechanism in mammals and birds in response to a mismatch in the maternal-offspring nutritional environment. They also indicate that the common practice of restrictive feeding of the broiler breeders and subsequent ad libitum feeding of the broilers may result in reduced growth and increased abdominal fat as compared to broilers of less restricted broiler breeders.

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Interrelationships of egg size, chick size, posthatching growth and hatchability

Cited by 270 publications

References 74 publications

Efeito da interação idade da matriz x peso do ovo sobre o desempenho de codornas de corte

Efeito da interação idade da matriz x peso do ovo sobre o desempenho de codornas de corte

The Effects of Different Eggshell Temperatures Between Embryonic Day 10 and 18 on Broiler Performance and Susceptibility to Ascites

Effect of match or mismatch of maternal–offspring nutritional environment on the development of offspring in broiler chickens

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