hatchability

Viability of the carriers was good but hatchability was poor.

Typical hatchability rate in Canada in 2011 was 82.2%.

Hatchability tends to peak (at perhaps 90%) somewhat later than production at 34-36 weeks.

Normally-colored eggs, indicative of normal shells for instance in brown chickens, have a normal hatchability.

Hatchability of eggs depends on soil temperature, soil humidity, soil composition, etc.

A UK source estimates 90% hatchability.

Other well known symptoms are In layers reduced egg yield and, in case of chicks, reduced hatchability, together with cage layer fatigue syndrome.

Effects of handling on hatchability of eggs of the leatherback turtle, Dermochelys coriacea (L.).

When normalized to C12.9, the NOEC is 310 ug L for growth and hatchability.

The hatchability and survival rate are the highest around 25 C. Eggs are very sensitive to desiccation and soon shrivel when the host plant starts wilting.

This is indicated as optimal temperature a summer average 13 to 18 C. At temperatures above 22 C were often injuries of larvae and observed mainly a reduced hatchability of eggs.

The tests are designed to provide dose-response information, expressed as the percent effluent concentration that affects the hatchability, gross morphological abnormalities, survival, growth, and/or reproduction within the prescribed period of time (four to seven days).

A study of CLA supplementation (equal amounts of c9,t11 and t10,c12) in hatchling chicks showed high mortality and low hatchability rates among CLA-supplemented groups, and also a decrease in brain DHA levels of CLA-treated chicks.

For practical reasons, the responses observed in these tests are usually limited to hatchability, gross morphological abnormalities, survival, growth, and reproduction, and the results of the tests are usually expressed in terms of the highest toxicant concentration that has no statistically significant observed effect on these responses, when compared to the controls.