scholarly journals The silver fox / by E. OE. Somerville and Martin Ross [pseud.]

1912 ◽  
Author(s):  
Martin Ross ◽  
E. . Somerville
Keyword(s):  
Animals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1743
Author(s):  
Marta Kuchta-Gładysz ◽  
Ewa Wójcik ◽  
Anna Grzesiakowska ◽  
Katarzyna Rymuza ◽  
Olga Szeleszczuk

A cytogenetic assay based on fragile sites (FS) enables the identification of breaks, chromatid gaps, and deletions. In healthy individuals, the number of these instabilities remains low. Genome stability in these species is affected by Robertsonian translocations in the karyotype of the blue fox and by B chromosomes in the silver fox. The aims of the study were to characterise the karyotype of blue foxes, silver foxes, and their hybrids and to identify chromosomal fragile sites used to evaluate genome stability. The diploid number of A chromosomes in blue foxes ranged from 48 to 50, while the number of B chromosomes in silver foxes varied from one to four, with a constant number of A chromosomes (2n = 34). In interspecific hybrids, both types of karyotypic variation were identified, with the diploid number of A chromosomes ranging from 40 to 44 and the number of B chromosomes varying from 0 to 3. The mean frequency of FS in foxes was 4.06 ± 0.19: 4.61 ± 0.37 in blue foxes, 3.46 ± 0.28 in silver foxes, and 4.12 ± 0.22 in hybrids. A relationship was identified between an increased number of A chromosomes in the karyotype of the hybrids and the frequency of chromosomal breaks. The FS assay was used as a biomarker for the evaluation of genomic stability in the animals in the study.


2007 ◽  
Vol 38 (2) ◽  
pp. 185-194 ◽  
Author(s):  
Anna V. Kukekova ◽  
L. N. Trut ◽  
K. Chase ◽  
D. V. Shepeleva ◽  
A. V. Vladimirova ◽  
...  
Keyword(s):  

2012 ◽  
Vol 7 (10) ◽  
pp. 1028-1034 ◽  
Author(s):  
Zhengzhu Liu ◽  
Yuanfang Gong ◽  
Wenjin Zhu ◽  
Lingxin Duan ◽  
Muxiang Ge ◽  
...  

1988 ◽  
Vol 48 (2) ◽  
pp. 95-98 ◽  
Author(s):  
N. Rubtsov ◽  
A. Graphodatsky ◽  
V.G. Matveeva ◽  
S.I. Radjabli ◽  
T.B. Nesterova ◽  
...  

2002 ◽  
Vol 11 (3) ◽  
pp. 185-197 ◽  
Author(s):  
L. AHOLA ◽  
J. MONONEN ◽  
T. PYYKKÖNEN

Traditionally farmed silver fox cubs are raised after weaning either in pairs or singly in a traditional fox cage (1.2 m2). However, this way of housing foxes has been criticised because the foxes may have limited chance to exercise and to show social behaviour. Therefore, the aim of the present study was to evaluate the effects of different social and spatial conditions on the welfare of silver fox cubs. The cubs were housed singly, in pairs or in quartets with space allocation of either 0.6 or 1.2 m2 per animal. Behavioural, physiological and production-related welfare parameters were assessed. The results revealed that space allocation had only minor effects on the measured welfare related parameters. With regard to social conditions, the results showed that the possibility for social behaviour is important for the welfare of young cubs. However, the welfare of the cubs may be jeopardised if they are kept in quartets beyond their natural dispersal time. Therefore, the welfare of silver fox cubs could be enhanced by allowing the cubs to enjoy of social companionship during the first months of their lives and by separating them into pairs in later autumn.


Author(s):  
I.O. Lastovska ◽  
L.V Pirova ◽  
L.T. Kosior ◽  
O.O. Borshch ◽  
O.V Borshch

A comparative assessment of the fattening qualities of rabbits of different breeds on a farm with an intensive technology of rabbit meat production was carried. The material for the study was a herd of rabbits of meat and skin breeds: Gray Giant Flander, Californian, Silver Fox. The experiment was carried by the group method. For this purpose, 30 rabbits were selected at 45 days of age and 3 groups of 10 heads were formed. Analogue rabbits were selected by breed, age, live weight, sex. The experimental livestock was housed in a shed-type room equipped with 4 rows of mesh cages arranged in two tiers, in which bunker feeders and nipple drinking bowls were installed. The animals were fed with pellets compound feed with the addition of leguminous Herbal hay. Compound feed was distributed from bunker self-feeders, Herbal hay – from feeders (mangers). The rabbits were watered from nipple drinkers, which provided the animals with constant access to food and water. In the course of the research, the live weight of rabbits, absolute and average daily gain, relative growth rate and feed costs were studied. It has been found that the Californian rabbits fulfill their growth potential better than the Silver Fox and Gray Giant Flander rabbits. Average daily gains in rabbits of the Californian breed were 1.8 g higher compared to analogs of the Silver Fox breed and 1.18 g higher than in the Gray Giant Flander. In terms of live weight, at the end of the experiment, the Californian rabbits were dominated by analogs of the Silver Fox breed by 116.7 g and by 90 g of Gray Giant Flander rabbits. The level of profitability of raising young rabbits for meat of the Californian breed was 12.2 %, and the Gray Giant Flander and Silver Fox breeds, respectively – 3.8 and 4.0 %. Key words: fattening qualities, Gray Giant Flander, Silver Foxy breed, Californian breed, average daily gains, economic efficiency.


2010 ◽  
Vol 132 (26) ◽  
pp. 8888-8890 ◽  
Author(s):  
Sonali Garg ◽  
Haixiang Gao ◽  
Young-Hyuk Joo ◽  
Damon A. Parrish ◽  
Yangen Huang ◽  
...  
Keyword(s):  

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