نتایج جستجو برای: broodstock
تعداد نتایج: 631 فیلتر نتایج به سال:
This study investigated the integrated effects of two photoperiods (16:08 and 08:16 h) along with three light intensities (3000, 15000 and 50000 lux) on some reproductive parameters and broodstock survival rates of Artemia parthenogenetica in six treatments in a completely randomized factorial design in culture system until death. Two-way ANOVA analysis revealed significant differences in total...
Different hormones are used to induce final sexual maturation in fish breeders and one of these hormones is different analogue of gonadotropin releasing hormone (GnRH) with different trade names. The aim of this study was to evaluate the biological activity of recombinant GnRH produced in the laboratory of Sari Agricultural Sciences and Natural Resources University on the induction and synchron...
Thyroid hormones [triiodothyronine (T3) and thyroxine (T4)] are also known to play an important function in other biological processes such as growth, sexual development and metabolism in different fish species. Therefore, the objective of this study was to examine the effects of T4 injection on growth performance and hematological indices in sterlet sturgeon (Acipenser ruthenus) broodstock. Th...
Sex determination in the Nile tilapia (Oreochromis niloticus) is thought to be an XX-XY (male heterogametic) system controlled by a major gene. We searched for DNA markers linked to this major locus using bulked segregant analysis. Ten microsatellite markers belonging to linkage group 8 were found to be linked to phenotypic sex. The putative Y-chromosome alleles correctly predict the sex of 95%...
livestock has been the foundation for selective breeding for thousands of years. However, our understanding of genetics, which is the biological basis of heredity and variation among organisms, has deepened dramatically in the last several decades. This new knowledge expands the potential applications of genetics and genome technologies in agricultural practices. In aquaculture settings, curren...
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