Grazing behaviour, intake and performance of dairy ewes with restricted access time to berseem clover (Trifolium alexandrinumL.) pasture

2016 ◽  
Vol 72 (2) ◽  
pp. 194-210 ◽  
Author(s):  
G. Molle ◽  
M. Decandia ◽  
V. Giovanetti ◽  
C. Manca ◽  
M. Acciaro ◽  
...  
2014 ◽  
Vol 54 (9) ◽  
pp. 1233 ◽  
Author(s):  
G. Molle ◽  
M. Decandia ◽  
V. Giovanetti ◽  
C. Manca ◽  
M. Acciaro ◽  
...  

The effects of restricted time allocation (2, 4 or 6 h/day) to pasture and grazing day (Day 1, initial; Day 4, intermediate; Day 7, final) on feeding behaviour, intake and performance were assessed in Sarda dairy ewes, rotationally grazing Italian ryegrass plots for 7 days, with 21 days of regrowth. A randomised block design with two replicates per access time was used with six groups of six ewes each. The ewes were supplemented daily with 400 g/head of a commercial concentrate at milking, 300 g/head of lupin after grazing and 700 g/head of ryegrass hay overnight. Pasture variables, feeding behaviour, herbage and supplement DM intake, and milk yield and composition were measured on 12 days (4 per target grazing day). Plot average data were analysed by a bifactorial model with interaction, which was not significant. Sward height and herbage mass decreased between Day 1 and Day 4 (P < 0.05). Leaf area index dropped from Day 1 to Day 7 (P < 0.05). Eating time, as proportion of access time, and intake rate were higher in 2 h/day groups than in the others (P < 0.05). Nevertheless, herbage and total intake were higher in 6 h/day than in 2 h/day groups, being 4 h/day groups intermediate (P < 0.05). Herbage intake decreased with grazing period (P < 0.05). Fat normalised milk yield was higher in 6 h/day groups than in the others (P < 0.05) and in Day 1 and Day 4 than in Day 7 (P < 0.05). To conclude, time restriction below 6 h/day and pasture depletion, in terms of herbage quality, constrained intake and performance of rotationally grazing dairy ewes.


2007 ◽  
Vol 106 (2-3) ◽  
pp. 271-281 ◽  
Author(s):  
R. Celaya ◽  
M. Oliván ◽  
L.M.M. Ferreira ◽  
A. Martínez ◽  
U. García ◽  
...  

Author(s):  
S.Tamil Selvan ◽  
M. Sundararajan

In this paper presented Design and implementation of CNTFET based Ternary 1x1 RAM memories high-performance digital circuits. CNTFET Ternary 1x1 SRAM memories is implement using 32nm technology process. The CNTFET decresase the diameter and performance matrics like delay,power and power delay, The CNTFET Ternary 6T SRAM cell consists of two cross coupled Ternary inverters one is READ and another WRITE operations of the Ternary 6T SRAM cell are performed with the Tritline using HSPICE and Tanner tools in this tool is performed high accuracy. The novel based work can be used for Low Power Application and Access time is less of compared to the conventional CMOS Technology. The CNTFET Ternary 6T SRAM array module (1X1) in 32nm technology consumes only 0.412mW power and data access time is about 5.23ns.


animal ◽  
2008 ◽  
Vol 2 (12) ◽  
pp. 1818-1831 ◽  
Author(s):  
R. Celaya ◽  
R. Benavides ◽  
U. García ◽  
L.M.M. Ferreira ◽  
I. Ferre ◽  
...  

2012 ◽  
Vol 4 (5) ◽  
pp. 537-543
Author(s):  
Constantinos T. Angelis

New Global Navigation Satellite System (GNSS) systems under development, such as Galileo, are very promising for future global positioning-based applications. A vast research is undergoing a final stage of implementation in order to fulfill the primary purpose of European Space Agency for developing and then sustaining of 30 (27 + 3 spares) Galileo satellites in orbit. This article presents simulation results for a realistic deployment of multibeam antennas, with a new modified theoretical pattern, in GNSS Satellite Systems. The proposed multibeam antennas use 61-spot beams for maximum efficiency in terms of satellite coverage and accessing high quality of service. In order to prove the reliability and feasibility of this work, various simulations were conducted using the upcoming Galileo system as a platform taking into consideration real-world conditions. Gain analysis versus elevation, Bit Error Rate (BER) and access time simulation results show that the viability of the proposed multibeam antenna deployment is established.


1998 ◽  
Vol 35 (4) ◽  
pp. 684-691 ◽  
Author(s):  
J K McKenna ◽  
K W Biggar

Due to the plugging of the vents beneath a vented-slab concrete foundation of the Supply Building at Canadian Forces Station Alert on the northern tip of Ellesmere Island, excessive thermal degradation of the underlying permafrost caused unacceptable settlement of the slab. It was determined that maintenance of the existing system would be an ongoing problem and replacement of the structure would cost $3 million and 3 years to construct. To re-establish the thermal regime under the Supply Building, it was decided to use a newly developed horizontal thermosyphon system installed in the existing vents to rehabilitate the foundation. The thermosyphon installation presented some unique problems owing to the restricted access around the building and the requirement to drill horizontally beneath the building, which necessitated the fabrication of a special drill rig. In addition, the use of horizontally placed thermosyphons is a relatively new application of the existing technology. The paper briefly describes the initial problem, the development of the solution, and describes in detail the actual installation and performance of the horizontal thermosyphon system with 3 years of soil temperature data.Key words: permafrost, thermosyphon, foundation, settlement, ventilated slab, CFS Alert.


2019 ◽  
Vol 4 (2) ◽  
pp. 185
Author(s):  
Rakhmadhany Primananda ◽  
Reza Andria Siregar ◽  
Mochamad Atha

The widespread use of Internet of Things (IoT) has effect in a growing number of hardware devices that can be controlled and monitored using a variety of applications. It affects the amount of data that must be collected to be analyzed and processed according to user requirement. The greater the data collected results in requirement of storage media that has access management and scalability that are effective and efficient. The data collected in cloud-based infrastructure namely Openstack. Implementation in this research by involving two physical device of server as main infrastructure that located in network of Faculty of Computer Science, Brawijaya University Malang which used as controller node and compute node. Controller can adapt to the use of various dashboard and provide a good access management service for users to request and create instances in Openstack. The resulting data center shows good performance based on scalability, access, and performance of data transmission from IoT sensors. The test is done gradually by adding requirement of compute nodes up to 24 VCPU, 48 GB of RAM, and 235 GB of HD storage in registered instances. Access at the data center can be done either from faculty internal network (private) and faculty external network (public) with access time under 100 ms.


animal ◽  
2011 ◽  
Vol 5 (11) ◽  
pp. 1805-1813 ◽  
Author(s):  
E. Kennedy ◽  
J. Curran ◽  
B. Mayes ◽  
M. McEvoy ◽  
J.P. Murphy ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document