lodohormones in the serum of chick embryos and post-hatching chickens as influenced by incubation temperature. Relationship with the hatching process and thermogenesis

Decuypere, Eddy; Nouwen, Ej; Kuhn, Er; Geers, Rony; Michels, Hervé

doi:10.1051/rnd:19791008

Cited by 59 publications

(30 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The plasma T 3 levels observed in this study is in line with the reports of Tona et al (2003), Decuypere et al (1979) and Careghi et al (2005). These authors reported that thyroid hormones increased from dayold until day 7 post-hatch.…”

Section: Discussionsupporting

confidence: 82%

“…Because the end of 7 day of rearing is often considered as the true starting point for production and that the chick body weight between 7 to 10 day has been shown to linearly related to the body weight at slaughter age (Decuypere et al, 1979;Tona et al, 2003), performance up to four week s of age was considered to be a good indicator of the the difference in the NIC and the broiler strains in this study. This is comparable with the findings of Tona et al (2004) who reported that only seven to ten-day old chicks onwards are are correlated with slaughter age weight.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Dry season juvenile growth and physiological parameters in exotic and Nigerian indigenous chicken

2014

View full text Add to dashboard Cite

SUMMARYThis study evaluated early growth and plasma hormonal profile in exotic strains of broiler and Nigerian indigenous chicken. A total of 1200 hatching eggs, 300 each from four strains of chicken were used for this study. The strains included the Nigerian indigenous chicken (NIC), the Arbor acre, Hubbard, and Marshall broiler strains. Chicks weights were monitored weekly. Blood samples were collected at hatch (day-old), weeks 1, 2, 3 and 4 post-hatch for triiodothyronine (T 3 ) and corticosterone level determination. The chicks were randomly distributed into four rearing pens for a 28-d assessment of growth rate. Results showed that the body weights (g) in the broiler strains were higher than that of the NIC throughout the rearing period. There was no significant difference (p>0.05) in the levels of T 3 at day-old and at week 1 until later in the growth phase. Corticosterone levels did not differ significantly at day-old but became different from week 1 post-hatch. The levels of T 3 were not statistically different in the first week of growth. In the second week of post-hatch growth, there was a statistical difference in the levels of T 3 among the four strains of chicken. The level in the NIC was comparable (p<0.05) to those of Arbor acre and Marshall strains. The level in the Hubbard was significantly lower than that of the NIC, Arbor acre and Marshall. In the third week of growth, the level in the NIC was similar to that of Marshall strain and higher than those of Hubbard and Arbor acre strains. This study showed that at hatching, there was no difference (p>0.05) in the metabolic rate and the stress level among the strains of chicken as shown by the levels of T 3 and corticosterone respectively. The day-old chick weight and the weights in subsequent weeks post-hatch were smaller in the NIC than the broiler strains possibly as a result of low hatching weight. The early growth difference could not be explained by physiological parameters such as T 3 and corticosterone. However, the differences in posthatch physiological and metabolic parameters may be due partly to genetic differences.

show abstract

Section: Discussionsupporting

confidence: 82%

Section: Discussionmentioning

confidence: 99%

Dry season juvenile growth and physiological parameters in exotic and Nigerian indigenous chicken

2014

View full text Add to dashboard Cite

show abstract

“…As the chick embryo consumes 60% more oxygen between the start of pulmonary breathing and hatching compared with the earlier stages (Visschedijk, 1968), it is possible that a shortage of oxygen occurs during this stage. Oxygen and carbon dioxide exchanges and endocrine functions especially tri-iodothyronine (T 3 ), thyroxine (T 4 ) and corticosterone are of fundamental importance for embryonic development during incubation and may affect survival of the embryo (Decuypere et al, 1979;Tullett, 1990). Thyroid hormones are involved in the complex process of pipping and hatching in chick embryos (Decuypere et al, 1991) and are important for regulating metabolic rate during the post-hatch period (Decuypere et al, 2000).…”

Section: Introductionmentioning

confidence: 99%

Effect of chronic hypoxia during embryonic development on physiological functioning and on hatching and post-hatching parameters related to ascites syndrome in broiler chickens

et al. 2004

View full text Add to dashboard Cite

The present study was designed to investigate the effect of different atmospheric pressure on the endogenous functions of broiler chickens during embryonic, hatching and growing periods related to ascites. Eggs from a commercial broiler line were incubated in two similar commercial incubators at high and low altitudes. The effect on embryonic development and physiological functions including hatching parameters, incidence of ascites and growth performance were examined. Embryos incubated at high altitude had higher plasma triiodothyronine, thyroxine, corticosteroid and lactic acid levels, and hatched earlier than those incubated at low altitude. Embryonic mortality was higher at high altitude. Chickens that had been incubated at high altitude showed less right ventricular hypertrophy and ascites mortality than those incubated at low altitude. It was concluded that different atmospheric pressure during incubation interacts with the endocrine functions of the embryo and hence affects hatching parameters, thereby influencing ascites susceptibility.

show abstract

“…There are several studies that observed the effect of temperature on length of incubation (Michels et al, 1974;French 1994, Suarez et al, 1996, on the rate of embryo growth (Decuypere et al, 1979;Dias and Muller, 1998), and on hatchability (Wilson, 1991;Lourens et al, 2005). However, there are few studies about these effects on Japanese quail incubation performance.…”

Section: Introductionmentioning

confidence: 99%

Incubation of Japanese Quail Eggs at Different Temperatures: Hatchability, Hatch Weight, Hatch Time and Embryonic Mortality

Romao¹,

Moraes²,

Teixeira³

et al. 2009

AVS

View full text Add to dashboard Cite

A AB BS ST TR RA AC CT TTemperature is the most important factor affecting embryonic development, hatchability and post hatch performance. Optimum incubation temperature is normally defined as that required to achieve maximum hatchability. This work was carried out to verify the effects of different incubation temperatures on hatchability, hatch weight, hatch time and embryonic mortality of Japanese quail eggs. A total of 800 eggs were divided in eight experimental groups that were incubated at different temperatures (34, 35, 36, 37, 38, 39, 40 and 41ºC). The other incubation conditions were identical for all groups, 60±5% of relative humidity and egg turning every two hours until transference to the hatchers at 15 days of incubation. The results showed that fertile hatchability was higher for eggs incubated at 37 and 38ºC, 76.6 and 80.7%, respectively. Eggs incubated at 34ºC did not hatch and the ones incubated at 35 and 41ºC showed very poor hatchability. The other temperatures had hatch rates from 50.3 to 57.7%. There were higher hatch weights in eggs incubated at high temperatures (38-41°C) compared t o the ones incubated at the lower ones (35-37°C). T here was an enormous difference in the hatching time according to the incubation temperature. The difference of time between the groups of eggs that hatched earlier (40°C) compared to the ones the hatcher later (35°C) was 156.3 hou rs or 6.5 days. Embryos seemed to be resistant to at high temperatures until 40°C at the early period of incubation, ho wever the same was not observed at the later stages of incubation when high temperatures (39-41°C) increased embryoni c mortality.Key words: hatch performance; humidity; poultry; temperature R RE ES SU UM MO OA temperatura é o fator mais importante para o desenvolvimento embrionário, a eclodibilidade e o desempenho pós-nascimento de aves. A temperatura ideal é normalmente aquela que permite máxima eclodibilidade. Este trabalho verificou os efeitos de diferentes temperaturas de incubação sobre a eclodibilidade, perda de peso dos ovos, peso ao nascer, tempo de nascimento e mortalidade embrionária de ovos de codornas japonesas. Foram utilizados 800 ovos, divididos em oito grupos experimentais e incubados em diferentes temperaturas (34, 35, 36, 37, 38, 39, 40 e 41ºC). As demais condições de incubação foram idênticas para todos os grupos, 60±5% de umidade relativa e viragem a cada 2 horas até a transferência para a nascedoura no 15º dia de incubação. A eclodibilidade dos ovos férteis foi maior para os ovos incubados a 37 e 38ºC; 76,6 e 80,7%, respectivamente. Os ovos incubados a 34ºC não eclodiram e os incubados a 35 e 41ºC apresentaram um índice muito baixo de eclodibilidade. As outras temperaturas proporcionaram eclodibilidade entre 50,3 e 57,7%. Os pesos ao nascer foram elevados nos grupos incubados em temperaturas altas (38-41°C) quando comparados aos grupos incubados em temperaturas baixas (35-37°C). Observou-se diferen ça no tempo de nascimento de acordo com a temperatura de incubação. A diferença de tempo entre o...

show abstract

lodohormones in the serum of chick embryos and post-hatching chickens as influenced by incubation temperature. Relationship with the hatching process and thermogenesis

Abstract: Summary. Serum levels of triiodothyronine (T 3 ) and thyroxine (T 4 ) Introduction.

Cited by 59 publications

References 14 publications

Dry season juvenile growth and physiological parameters in exotic and Nigerian indigenous chicken

Dry season juvenile growth and physiological parameters in exotic and Nigerian indigenous chicken

Effect of chronic hypoxia during embryonic development on physiological functioning and on hatching and post-hatching parameters related to ascites syndrome in broiler chickens

Incubation of Japanese Quail Eggs at Different Temperatures: Hatchability, Hatch Weight, Hatch Time and Embryonic Mortality

Contact Info

Product

Resources

About