scholarly journals The Effects of Egg-incubation Temperature on Growth and Survival of Hatchling Painted Turtles

2011 ◽  
Author(s):  
Daniel Warner ◽  
Timothy Mitchell ◽  
Fredric J. Janzen
Keyword(s):  
Incubation Temperature ◽  
Growth And Survival ◽  
Egg Incubation ◽  
Painted Turtles

Effect of pH, Acidulant, Time, and Temperature on the Growth and Survival of Listeria monocytogenes

1989 ◽  
Vol 52 (8) ◽  
pp. 571-573 ◽  
Author(s):  
KENT M. SORRELLS ◽  
DAVIN C. ENIGL ◽  
JOHN R. HATFIELD
Keyword(s):  
Antimicrobial Activity ◽  
Acetic Acid ◽  
Lactic Acid ◽  
Listeria Monocytogenes ◽  
Citric Acid ◽  
Hydrochloric Acid ◽  
Malic Acid ◽  
Incubation Temperature ◽  
Growth And Survival ◽  
Ph Values

The effect of different acids, pH, incubation time, and incubation temperature on the growth and survival of four strains of Listeria monocytogenes in tryptic soy broth was compared. Hydrochloric acid (HCl), acetic acid (AA), lactic acid (LA), malic acid (MA), and citric acid (CA) were used to acidify tryptic soy broth to pH values 4.4, 4.6, 4.8, 5.0, and 5.2 pH. Incubation times were 1, 3, 7, 14, and 28 d at 10, 25, and 35°C. The inhibition of L. monocytogenes in the presence of high acidity appears to be a function of acid and incubation temperature. Based on equal pH values, the antimicrobial activity is AA > LA > CA ≥ MA > HCl at all incubation times and temperatures. When based on equal molar concentration, the activity appeared to be CA ≥ MA > LA ≥ AA > HCl at 35 and 25°C, and MA > CA > AA ≥ LA > HCl at 10°C. Greatest antimicrobial activity occurred at 35°C. Greatest survival occurred at 10°C and greatest growth occurred at 25°C. Final pH of the medium was as low as 3.8 in HCl at 28 d. All strains grew well at pH values lower than the minimum previously reported (5.5–5.6).

Organochlorines, perfluoroalkyl substances, mercury, and egg incubation temperature in an Arctic seabird: Insights from data loggers

2018 ◽  
Vol 37 (11) ◽  
pp. 2881-2894 ◽  
Author(s):  
Pierre Blévin ◽  
Scott A. Shaffer ◽  
Paco Bustamante ◽  
Frédéric Angelier ◽  
Baptiste Picard ◽  
...  
Keyword(s):  
Incubation Temperature ◽  
Perfluoroalkyl Substances ◽  
Egg Incubation ◽  
Data Loggers

scholarly journals Early Phenotype Programming in Birds by Temperature and Nutrition: A Mini-Review

2022 ◽  
Vol 2 ◽  
Author(s):  
Charlotte Andrieux ◽  
Angélique Petit ◽  
Anne Collin ◽  
Marianne Houssier ◽  
Sonia Métayer-Coustard ◽  
...  
Keyword(s):  
Molecular Mechanisms ◽  
Incubation Temperature ◽  
Temperature Tolerance ◽  
Environmental Cues ◽  
In Ovo ◽  
Methyl Donors ◽  
Beneficial Effects ◽  
Egg Incubation ◽  
And Performance

Early development is a critical period during which environmental influences can have a significant impact on the health, welfare, robustness and performance of livestock. In oviparous vertebrates, such as birds, embryonic development takes place entirely in the egg. This allows the effects of environmental cues to be studied directly on the developing embryo. Interestingly, beneficial effects have been identified in several studies, leading to innovative procedures to improve the phenotype of the animals in the long term. In this review, we discuss the effects of early temperature and dietary programming strategies that both show promising results, as well as their potential transgenerational effects. The timing, duration and intensity of these procedures are critical to ensure that they produce beneficial effects without affecting animal survival or final product quality. For example, cyclic increases in egg incubation temperature have been shown to improve temperature tolerance and promote muscular growth in chickens or fatty liver production in mule ducks. In ovo feeding has also been successfully used to enhance digestive tract maturation, optimize chick development and growth, and thus obtain higher quality chicks. In addition, changes in the nutritional availability of methyl donors, for example, was shown to influence offspring phenotype. The molecular mechanisms behind early phenotype programming are still under investigation and are probably epigenetic in nature as shown by recent work in chickens.

scholarly journals Autochthonous probiotic mixture improves biometrical parameters of larvae of Piaractus mesopotamicus (Caracidae, Characiforme, Teleostei)

2018 ◽  
Vol 48 (7) ◽  
Author(s):  
Marcos Gabriel Guidoli ◽  
Jorge Arnaldo Mendoza ◽  
Sofia Lizardo Falcón ◽  
Silvia Irene Boehringer ◽  
Sebastián Sánchez ◽  
...  
Keyword(s):  
Growth Factors ◽  
Fish Species ◽  
Native Fish ◽  
Feeding Period ◽  
Exogenous Feeding ◽  
Growth And Survival ◽  
Piaractus Mesopotamicus ◽  
Egg Incubation ◽  
Probiotic Product

ABSTRACT: Probiotics are a novel alternative to antibiotics as growth factors. Previously, our group isolated, selected and tested in vivo, eight autochthonous strains. They showed no significant effects when administered individually. However, the best doses, stages and ways of administration were combined in a multi strain formula. The aim of this research was to evaluate the effect of this probiotic product on the growth and survival of Piaractus mesopotamicus larvae. The administration was implemented during egg incubation and endogenous feeding period (5), during larvae exogenous feeding period (10) and all along the experiment (15). A group without microorganisms was used as control. The probiotic generates significant increments of mean weight and not significant increases of survival and biomass in two of the three tested stages. These results demonstrate the effectiveness of an autochthonous probiotic formula for the culture of this native fish species.

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