Constant exposure of Hy-Line W-36 White Leghorn hens to ultraviolet light from insect traps resulted in no significant differences in egg production, fertility, hatchability of fertile eggs, or total hatchability. Also, there were no apparent effects on the eyes of the birds. Results were the same when either blacklight or blacklight blue tubes were used. The need for additional testing of ligh...

Light-stick is a light attractor used in longline fishing which is often dumped or lost into the ocean after used, becoming a potential pollutant to marine organisms. In the present study, toxicity was evaluated by exposing Artemia to light-stick contents. The effects were observed on the survival of nauplii and hatchability of cysts. The LC50 was 0.063mLL−1 after 24h of exposure, whilst hatcha...

Effects of water flooding on the oviposition capacity of engorged adult females and hatchability of eggs of Rhipicephalus sanguineus and Haemaphysalis leachi leachi under laboratory conditions were investigated. The durations of time of water flooding were 1, 2, 4, 6, 12, 24, 48, 72, 96, and 120 hours. Engorged females of R. sanguineus and H. leachi leachi did not oviposit after being flooded f...

Hatchability is a complex age dependent trait. It comprises of several sub-traits which are susceptible to genetic and environmental factors arising from various sources. This review examines the genetic basis of egg production, fertility and egg quality traits and how these relate with hatchability. We suggest that both sire and dam genetic components are important in overall hatchability most...

during subsequent incubation in two experiments. Treatment groups had four replicate incubation trays of 150 eggs each. As expected, hatchability of fertile eggs declined with length of egg storage in both experiments (P<0.01). This was due to increases in both percentage early and late dead embryos in both experiments. Hatchability of fertile eggs was increased by SEU storage and turning durin...

The application of 20-hydroxyecdysone on Bombyx mori larvae has been proved to be a significance in the sericulture industry. Variation in the 20-hydroxyecdysone concentration significantly (P <0.05) influenced 1 the reproductive potential of B. mori in terms of fecundity, incubation period and hatchability of eggs. The fecundity and hatchability increased with the increasing number of larval t...

The present study was carried out in co-operation between the Poultry Production Unit, Nuclear Research Center, Atomic Energy Authority, Cairo, Egypt and Ostrich Farm belonging to Faculty of Agriculture, Al-Azhar University. In an effort to improve the hatchability and hatching performance of ostrich eggs via testing the effect of in ovo injection of several nutrients and vitamins, as no simila...

Eisenia fetida were exposed continuously to (60)Co gamma radiation during two generations (F(0) and F(1)). Adult F(0) reproduction capacity (i.e., number of cocoons produced, hatchability and number of F(1) hatchlings) in controls and at five dose rates (0.18, 1.7, 4, 11 and 43 mGy/h) was measured over a 13-week exposure period. Survival, growth and sexual maturation of F(1) hatchlings were obs...

Poultry production at all scales of operation is wholly dependent on the supply day-old chicks. Two important factors that have a significant impact chicks are fertility and hatchability. Hatchability proportion fertile eggs actually hatch, whereas refers to incubated. Understanding elements affect hatchability important. Breeds, diet, age hens, environmental stress, egg weight, shell thickness...