in this study, the effects of culban seed (vicia peregrine l.) on live body weight, feed intake, feed efficiency, egg production, egg quality characteristics, egg yolk fatty acid profiles and yolk cholesterol content in laying hens were investigated. the experiment consists of seven treatment groups with ten replications containing one laying hen in each and for 32 weeks old seventy laying hen ...

Adenylate and guanylate cyclases were assayed in silkmoth fat body homogenates by measuring the conversion of [cc-3tP]nucleoside triphosphates to cyclic [32P]nucleotides. Adenylate cyclase was dependent on dithiothreitol, required either Mg2’ or MI?+ for activity, was activated by NaF, and inhibited by Triton X-100. Guanylate cyclase was not dependent on dithiothreitol, was strictly dependent u...

From ovaries dissected from developing and emerged adults of the silkworm, Bombyx mori, two substances having high molting hormone activity were isolated. One of these was identified as 2-deoxy-alpha-ecdysone by means of high-pressure liquid chromatography and mass spectrometry. Although this compound had previously been isolated from the fern Blechnum minus and postulated to be the precursor o...

The mechanisms underlying larval diapause in the wax moth (Galleria mellonella) is one of the most throughly studied aspects. At the low temperature of 18 degrees C, the last instar larvae did not pupate but transferred to 30 degrees C they initiated development and pupation in a circadian manner. Different types of surgical manipulations including head-ligation, nerve cord-severance, implantat...

Pupal diapause in the cecropia silkmoth is terminated by activation of the prothoracic glands. Implantation of adult male cecropia corpora allata or injection of juvenile hormone-I (JH-I) or juvenile hormone-I acid (JH-I acid) causes initiation of development in debrained, allatectomized diapausing pupae. The subsequent development results in formation of second pupae or pupal-adult intermediat...

Background Low-density lipoproteins (LDL) is known to protect boar sperm during freezing–thawing, but little information is known about the effects of LDL extracted from different avian egg yolks on post-thaw boar semen quality. The purpose of this study was to compare and analyze the effects of LDL at various concentrations and different species on boar sperm quality after freezing–thawing. Ma...

This study aims to analyze the Break-Even Point of Backyard laying hens business in Sidenreng Rappang Regency. research was conducted Bulo Village, backyard farm. from February April 2020. In this used a case study, results are not generalized. The total profit earned by these people's farm is IDR 137,717,244. For price 37,000 eggs, it will reach BEP at 1,617,723/ egg, 1,436,727,272 with egg 88...