Modulation of Fear and Arousal Behavior by Serotonin Transporter (5-HTT) Genotypes in Newly Hatched Chickens

Phi Van VD, Krause T, Phi-Van L. Modulation of Fear and Arousal Behavior by Serotonin Transporter (5-HTT) Genotypes in Newly Hatched Chickens. Frontiers in Behavioral Neuroscience. 2018;12: 284

Evidence for the Association of a Deleted Variant in the 5′-Flanking Region of the Chicken serotonin transporter (5-HTT) Gene with a Temporary Increase in Feed Intake and Growth Rate

The serotonergic system has been shown to be implicated in the regulation of mood and feeding behavior. Previous studies have identified a polymorphism in the 5′-flanking region of the serotonin transporter ( 5 - HTT ) gene of Lohmann Brown (LB) laying hens. The deleted variant D was found to be associated with increased body weight. The objective of this study was to address whether the increased body weight may be due to an increased feed intake. After hatching, hens were kept under ad libitum feeding conditions, and their body weight and feed intake were weekly determined. From 5 weeks of age, the body weight of hens with the D/D and W/D genotypes was significantly greater than that of W/W carrying hens. Interestingly, we found that the feed intake of D/D carrying hens, relative to body weight, was transiently increased only between 4 and 7 weeks of age ( p < 0.05), leading to a higher growth rate ( p < 0.05), compared with that of W/W carrying hens. These results suggest that the presence of variant D may be correlated with a transiently increased appetite of D/D carrying hens

The chromatin structure of the lysozyme GAS41 origin of DNA replication changes during the cell cycle

We used a rapid and simple protocol using lysolecithin for mapping HS sites in vivo. The protocol is based on partial digestion with DNase I of exponentially growing cells following permeabilization by short treatment with lysolecithin. Using this protocol, we analyzed the chromatin structure of the region surrounding two overlapping elements, an origin of bidirectional DNA replication and the GAS41 promoter, in chicken myelomonocytic HD11 cells arrested in G0, G0 and S phases as well as at the G0/S border. The results show that the chromatin of this region became more nuclease sensitive when cells were arrested in G0 phase and that this change in chromatin structure was reversible after the cells began to enter S phas

A polymorphism in the 5’-flanking region of the serotonin transporter (5-HTT) gene affects fear-related behaviours of adult domestic chickens

Krause ET, Kjaer JB, Lüders C, van LP. A polymorphism in the 5’-flanking region of the serotonin transporter (5-HTT) gene affects fear-related behaviours of adult domestic chickens. Behavioural Brain Research. 2017;330:92-96

Fear but not social behaviour is affected by a polymorphism in the 5’-flanking region of the serotonin transporter (5-HTT) gene in adult hens

Krause ET, Kjaer JB, Dudde A, Schrader L, Phi-van L. Fear but not social behaviour is affected by a polymorphism in the 5’-flanking region of the serotonin transporter (5-HTT) gene in adult hens. Behavioural Brain Research. 2019;361:50-53

A Study on Design and Control of the Multi-Station Multi-Container Transportation System

In considering the problem of saving spaces during the transportation of items from one station to another, for example, in warehouses, factories, hospitals, etc., an automatic transportation system (ATS) that could take advantage of the above ceiling spaces for the transportation of products is considered. Such a system guarantees that the activities occurring in the floor area will be maintained as usual. To achieve this requirement, the ceiling spaces of a building are used to construct an automatic multi-station multi-container (MSMC) transportation system. This system can transport items from one place to another in the whole system. This system is designed to utilize the spaces above the ceiling, and it has the advantage of saving floor space for transportation operations. This will increase the operational capability of the industries and also improve the productivity of the industry in which this system is implemented. The entire transportation system includes (1) the essential conveying system (which is a functional conveyor module with a specified number of containers); (2) the control block that can monitor and operate the system; and (3) the sensor block for detecting and identifying the containers. The content of this article focuses on the introduction of the mechanical system (1); the control system (2); and the operating principle of the whole system (3)