scholarly journals High- and low-temperature manipulation during late incubation: Effects on embryonic development, the hatching process, and metabolism in broilers

2010 ◽  
Vol 89 (12) ◽  
pp. 2678-2690 ◽  
Author(s):  
H. Willemsen ◽  
B. Kamers ◽  
F. Dahlke ◽  
H. Han ◽  
Z. Song ◽  
...  
Keyword(s):  
Low Temperature ◽  
Embryonic Development ◽  
Hatching Process ◽  
Temperature Manipulation

scholarly journals The influence of difference temperature against the rate of embryonic development and larval abnormality of Cantik Grouper (Epinephelus sp.)

2019 ◽  
Vol 2 (1) ◽  
pp. 16
Author(s):  
Aprisianus Julkarman Simbolon ◽  
Ganjar Adhywirawan Sutarjo ◽  
Hariyadi Hariyadi
Keyword(s):  
Low Temperature ◽  
Embryonic Development ◽  
Incubation Temperature ◽  
Temperature Treatment ◽  
Optimum Temperature ◽  
Long Time ◽  
Epinephelus Fuscoguttatus ◽  
Low Levels ◽  
Difference Temperature ◽  
F 31

Cantikgrouper is the hybridization results grouper or cross-breeding between Epinephelus fuscoguttatus as a female and Epinephelus microdon as a male. The main barriers faced in the development of this commodity is still low levels of spawning up to seeding grouper. Based on the background, this study aimed to investigate optimum temperature observations against the rate of embryonic development Epinephelus sp.larvae. This study used the results of artificial spawning eggs.The fertilized eggs were incubated on six pieces of the container temperature treatment;each treatment there was repeated three times.The incubation temperature was kept on (A) 21-22°C; (B) 23-24°C; (C) 25-26°C; (D) 27-28°C; (E) 29-30°C; (F) 31-32°C. Results showed that eggswere incubated at a temperature of 21-22 ℃ embryonic development to a halt in the blastula, and temperature 23-24°C stalled on phasemyomere embryos. The low-temperature incubation period lasts a long time. Temperature 25-26°C needed 18 hours 6 minutes by 8.33% abnormality rate. Temperature 27-28°C needed 16 hours to hatch witha degree of abnormality of 7.6%. Temperature 29-30°C needed 15 hours 1 minute for the hatch tothe degree of abnormality of 5.33%. The 31-32°C temperature needed 14 hours 6 minutes to hatch witha degree of abnormality of 17.3%. The limits of tolerance for the incubation of the eggs ofcantik grouper (Epinephelusspp.) were 26-32°C.The best temperature of each treatment were obtained at a temperature of 29-30°C. Based on our results, it concluded that the changing temperature affected how long eggs could hatch.

Low-temperature manipulation of Ag atoms and clusters on a Ag(110) surface

1998 ◽  
Vol 66 (7) ◽  
pp. S675-S678 ◽  
Author(s):  
J.T. Li ◽  
W.-D. Schneider ◽  
R. Berndt
Keyword(s):  
Low Temperature ◽  
Temperature Manipulation

Comparison of a modern broiler and layer strain during embryonic development and the hatching process

2008 ◽  
Vol 49 (5) ◽  
pp. 574-582 ◽  
Author(s):  
N. Everaert ◽  
H. Willemsen ◽  
L. De Smit ◽  
A. Witters ◽  
J. De Baerdemaeker ◽  
...  
Keyword(s):  
Embryonic Development ◽  
Hatching Process

scholarly journals PENGARUH BOBOT TELUR TETAS ITIK TERHADAP PERKEMBANGAN EMBRIO, FERTILITAS DAN BOBOT TETAS

ZOOTEC ◽  
2016 ◽  
Vol 37 (1) ◽  
pp. 96
Author(s):  
Sarini Paputungan ◽  
Lucia J. Lambey ◽  
Linda S. Tangkau ◽  
Jaqualine Laihad
Keyword(s):  
Embryonic Development ◽  
Embryo Development ◽  
Design Method ◽  
Good Condition ◽  
Egg Weight ◽  
Randomized Design ◽  
Hatching Process ◽  
Duck Egg ◽  
Egg Fertility

EFFECT OF DUCK EGG WEIGHT ON FERTILITY, EMBRYO DEVELOPMENT AND HATCHING WEIGHT OF DAY OLD DUCK. This study was done to evaluate embryonic development for determination of egg fertility and hatching weight of day old duck (DOD). This study involved 160 eggs of duck with the average egg weight (EW) classified into 55g ≤  EW < 60g, 61g ≤ EW < 65g, 65g ≤ EW < 70g and 71g ≤ EW < 75g. Data collection was conducted over 28 days, as long as the period of hatching process. The design method used in this study was completely randomized design. Existing data were analyzed using analysis of variance. Treatments in this study were 4 treatments and 4 replications at each treatment. The variables measured were the percentage of egg fertility, embryo development and hatching weight. Results showed that duck embryo development during the hatching process was in good condition process. The results of variance analysis showed that treatments of egg weight did not affect significantly the percentages of egg fertility. The percentages of fertility were ranging between 85 – 95%. Hatching weights were ranging between 31g – 51g per DOD. Based on the results of this study, it can be concluded that egg weight had no effect on the process of embryonic development and fertility, except those for the hatching weight of DOD. Key words: Duck egg weight, embryonic development, fertility, hatching weight.

scholarly journals Intermittent thermal manipulations of broiler embryos during late incubation and their immediate effect on the embryonic development and hatching process

2011 ◽  
Vol 90 (6) ◽  
pp. 1302-1312 ◽  
Author(s):  
H. Willemsen ◽  
Y. Li ◽  
E. Willems ◽  
L. Franssens ◽  
Y. Wang ◽  
...  
Keyword(s):  
Embryonic Development ◽  
Hatching Process

Effects of Low Temperature on Embryonic Development of Sceloporus Lizards

Copeia ◽  
1997 ◽  
Vol 1997 (4) ◽  
pp. 827 ◽  
Author(s):  
Robin M. Andrews ◽  
Carl P. Qualls ◽  
Barbara R. Rose
Keyword(s):  
Low Temperature ◽  
Embryonic Development

EFFECTS OF SHORT PERIODS OF LOW TEMPERATURE STRESS AT 17 DAYS INCUBATION ON HATCHABILITY AND EMBRYONIC DEVELOPMENT

1973 ◽  
Vol 53 (2) ◽  
pp. 219-227
Author(s):  
C. K. LEVENICK ◽  
P. A. KONDRA
Keyword(s):  
Low Temperature ◽  
Embryonic Development ◽  
Temperature Stress ◽  
Treatment Effect ◽  
Low Temperature Stress ◽  
Stress Group ◽  
Stressed Group ◽  
High Incidence

Four groups of 80 eggs each were subjected to a low temperature stress of 3.8 C for 0, 4, 5, or 8 h, respectively, commencing after 17 days (408 h) incubation. Samples of these eggs were examined at 18.0, 19.5, 20.5, and 21.5 days incubation to study the treatment effect on embryonic development, and the remainder of the eggs were incubated for 22 days to determine the effect on hatchability. Hatchability was significantly reduced by 5 and 8 h of exposure to 3.8 C whereas 4 h of exposure caused a nonsignificant reduction in hatchability. Examination of embryos that failed to hatch revealed a high incidence of malpositions and abnormal hatching muscles. Malpositions occurred as early as 18 days incubation whereas edema, or hemorrhage, or both, of the hatching muscle did not begin to develop until 19.5 days. By 20.5 days of age the hatching muscles of the 8-h stressed group were significantly heavier than all other groups. The weight of the hatching muscle from the 5- and 8-h exposure groups increased continually during incubation whereas those of the controls and 4-h stress group had begun to decrease by 20.5 days and 21.5 days, respectively.

Low-Temperature Protection of Marine Turtle Eggs During Long-Distance Relocation

1989 ◽  
Vol 16 (3) ◽  
pp. 317 ◽  
Author(s):  
JL Harry ◽  
CJ Limpus
Keyword(s):  
Low Temperature ◽  
Sex Ratio ◽  
Embryonic Development ◽  
Incubation Period ◽  
Temperature Regime ◽  
Loggerhead Turtle ◽  
Caretta Caretta ◽  
Early Embryonic Development ◽  
Marine Turtle ◽  
Long Distance

Movement of marine turtle eggs, between about 3 hours and 3 weeks after oviposition, often results in substantial embryonic mortality. Eggs of the loggerhead turtle (Caretta caretta), which were cooled to 7-10�C within a few hours of oviposition, were relocated 1077 km in 14 h before being set at temperatures within the normal incubation range (26, 28 and 32�C). The percentage of viable embryos and hatchlings produced from these eggs was comparable to that of undisturbed eggs laid in natural nests. The incubation period and the sex ratio of the hatchlings, observed for each temperature regime, were unaffected by the initial cooling. Cooling C. caretta eggs effectively arrests early embryonic development, thereby extending the period during which eggs can be relocated without causing movement-induced mortality. This procedure is applicable in situations where turtle eggs must be transported for research or hatchery management purposes.

scholarly journals Low Temperature Effects on Embryonic Development and Hatch Time

1996 ◽  
Vol 75 (7) ◽  
pp. 924-932 ◽  
Author(s):  
M.E. SUAREZ ◽  
H.R. WILSON ◽  
B.N. MCPHERSON ◽  
F.B. MATHER ◽  
C.J. WILCOX
Keyword(s):  
Low Temperature ◽  
Embryonic Development ◽  
Temperature Effects
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