Selective Breeding and Short-Term Access to a Running Wheel Alter Stride Characteristics in House Mice

2017 ◽  
Vol 90 (5) ◽  
pp. 533-545 ◽  
Author(s):  
Gerald C. Claghorn ◽  
Zoe Thompson ◽  
Jarren C. Kay ◽  
Genesis Ordonez ◽  
Thomas G. Hampton ◽  
...  

Animals ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1665 ◽  
Author(s):  
E. James Squires ◽  
Christine Bone ◽  
Jocelyn Cameron

Boar taint is caused by the accumulation of androstenone and skatole and other indoles in the fat; this is regulated by the balance between synthesis and degradation of these compounds and can be affected by a number of factors, including environment and management practices, sexual maturity, nutrition, and genetics. Boar taint can be controlled by immunocastration, but this practice has not been accepted in some countries. Genetics offers a long-term solution to the boar taint problem via selective breeding or genome editing. A number of short-term strategies to control boar taint have been proposed, but these can have inconsistent effects and there is too much variability between breeds and individuals to implement a blanket solution for boar taint. Therefore, we propose a precision livestock management approach to developing solutions for controlling taint. This involves determining the differences in metabolic processes and the genetic variations that cause boar taint in specific groups of pigs and using this information to design custom treatments based on the cause of boar taint. Genetic, proteomic or metabolomic profiling can then be used to identify and implement effective solutions for boar taint for specific populations of animals.



2011 ◽  
Vol 44 (06) ◽  
Author(s):  
L Czibere ◽  
M Bunck ◽  
N Brehm ◽  
J Salvamoser ◽  
MS Kessler ◽  
...  


2021 ◽  
Author(s):  
Alberto A. Castro ◽  
Fotios Alexandros Karakostis ◽  
Lynn E. Copes ◽  
Holland E. McClendon ◽  
Aayushi P. Trivedi ◽  
...  


1993 ◽  
Vol 265 (4) ◽  
pp. R951-R956 ◽  
Author(s):  
E. M. Thomas ◽  
M. E. Jewett ◽  
I. Zucker

We investigated the influence of ambient and body temperature (Ta and Tb) on circadian rhythms of gonadectomized male Siberian hamsters. Animals that entered torpor (Tb < 30 degrees C) had significantly shorter circadian periods (tau s) than did nontorpid hamsters at a Ta of 13 degrees C (24.17 +/- 0.05 vs. 24.33 +/- 0.04 h). The tau s of homeothermic hamsters were not affected by Ta change. Short-term decreases in Tb, rather than changes in Ta, appear to affect tau. Access to activity wheels inhibited expression of torpor in short daylengths and was associated with significant increases in body mass. Running wheel activity can mask or block specific short-day responses.



1994 ◽  
Vol 21 (1) ◽  
pp. 11 ◽  
Author(s):  
BJ Kay ◽  
LE Twigg ◽  
HI Nicol

This study evaluated the effect of baiting refuge habitats around irrigated soyabeans with bromadiolone to control house mice and reduce their invasion of crops. Generalized linear models were constructed and used to predict changes in mouse abundance over time in both refuge and crop habitats of treated and untreated plots. Compared with untreated plots, bromadiolone significantly reduced the number of mice inhabiting the refuge habitat and reduced the rate at which mice invaded and colonized the adjacent crops. Despite this, no significant reductions in damage were detected as mice numbers failed to reach critical densities for crop damage on the untreated plots. This indicates a need for short-term predictive models when considering control strategies.



2020 ◽  
Vol 34 (S1) ◽  
pp. 1-1
Author(s):  
Alberto A. Castro ◽  
Holland E. McClednon ◽  
Aayushi P. Trivedi ◽  
Nicolas L. Schwartz ◽  
Theodore Garland


2018 ◽  
Vol 233 (2) ◽  
pp. 193-203 ◽  
Author(s):  
Nicolas L. Schwartz ◽  
Biren A. Patel ◽  
Theodore Garland ◽  
Angela M. Horner


Author(s):  
L. Reynolds

This paper discusses the reasons for keeping small ruminants and investigates the areas in which technological improvements are likely to have most impact in increasing the output from sheep and goat enterprises in hot climates. The most important areas in which biological manipulation can raise productivity lie in the areas of improved nutrition and increased survival of young animals. Nutritional studies of animals receiving diets of natural tropical grazing and browse may not reflect the rations actually consumed due to the ability of animals to select high quality forage from what is on offer. One suggestion is made as to how this selection can be exploited to increase the productivity of the herd as a whole. Improved health care offers the largest potential for increases in productivity by reducing the large mortality of young animals seen in many tropical production schemes. Much of this mortality has its roots in parasite infection. Anthelmatics have proved valuable for short term therapy but the speed at which parasites become resistant to drugs indicates that selective breeding of animals with resistance to parasites is a more valuable long term solution.



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