Development of broodstock, spawning, and early rearing the hybrid clownfish, Amphiprion ephippium (♂) × melanopus (♀), was studied under captive conditions. The fishes were successfully paired after being together for over a year. Spawning occurred between 0700 to 1000 hours every 3 weeks. More than 200 eggs spawned each time, with an egg size 1.5 ± 0.5mm. Fertilized turned from bright orange b...

the main aim of this research was to estimate the genetic and phenotypic parameters for productive and reproductive traits of esfahan native chickens. traits included body weights at hatch (bw1), 8 weeks of age (bw8), 12 weeks of age (bw12), and at sexual maturity (wsm)], age at sex maturity (asm), egg number (en), average egg weight (aew) in the first 12 weeks of production, and egg production...

The research aims to study the force required break shell of duck eggs, which helps provide conditions for process hatching eggs and circulation. physical mechanical properties hade been measured. most important results were as follows: arithmetic mean length longest diameter 56.19, 42.94 mm, coefficient shape, surface area volume 0.77, 18071.11 mm 2, 16.0 mm3 , thickness eggshell from middle, ...

Background: The specific antibody response against Newcastle disease virus (NDV) in the blood serum of chickens hatched from eggs exposed to low dose gamma-radiation was studied. Materials and methods: Two groups of eggs of commercial meat chicken lines were irradiated with the dose of 0.30 Gy 60Co gamma-rays before incubation and on the 19th day of incubation, respectively. The same num...

the data of this study were collected by indigenous chicken breeding centers in the west azerbaijan for 11 generations. the (co) variance components, heritability's, correlations between traits and breeding values were estimated by multi-trait animal model using wombat software. the genetic trends of traits over 11 generations of selection, using average function of breeding values per gen...