Immunological and Genetic Factors in Murine Virus-Induced Leukemia

SummaryIonising irradiation acts primarily via induction of DNA damage, among which doublestrand breaks are the most important lesions. These lesions may lead to lethal chromosome aberrations, which are the main reason for cell inactivation. Double-strand breaks can be repaired by several different mechanisms. The regulation of these mechanisms appears be fairly different for normal and tumour cells. Among different cell lines capacity of doublestrand break repair varies by only few percents and is known to be determined mostly by genetic factors. Knowledge about doublestrand break repair mechanisms and their regulation is important for the optimal application of ionising irradiation in medicine.

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IMPROVEMENT OF MEAT PRODUCTIVITY OF THE BULLS OF THE KALMYK BREED ON THE BASIS OF OPTIMIZATION OF GENETIC FACTORS

PROCEEDINGS of Nizhnevolzhskiy agrouniversity complex science and higher vocational education ◽

10.32786/2071-9485-2018-02-235-240 ◽

2018 ◽

Vol 2 ◽

Author(s):

I.F. Gorlov

Keyword(s):

Genetic Factors ◽

Meat Productivity

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Effect of Breed and Some Non - Genetic Factors on Milk Production and Some Proportions of Its Chemical Components in Two Breeds of Local Sheep

Al-Qadisiyah Journal For Agriculture Sciences (QJAS) (P-ISSN 2077-5822 E-ISSN 2617-1479) ◽

10.33794/qjas.vol10.iss1.102 ◽

2020 ◽

Vol 10 (1) ◽

pp. 227-231

Author(s):

Rahman Hussein AL-Qasimi ◽

Shatha Mohammed Abbas ◽

Allawi L.D. AL-Khauzai

Keyword(s):

Milk Production ◽

Genetic Factors ◽

Chemical Components ◽

Lactation Period ◽

Production Traits ◽

Milk Production Traits ◽

Fat Percentage ◽

Awassi Sheep ◽

Total Milk ◽

Milk Components

The study was carried out on 19 ewes of local Awassi sheep and 12ewes local Arabi sheep in the Al-kafeel sheep station Karbala, to determine the effect of breed and some non-genetic factors such as (sex of the lamb, type of birth, age and weight of ewes at birth) on daily and total milk production and lactation period and some of milk components (fat, protein and lactose). The results showed that a significant effect (P <0.05) of the breed on milk production traits where Awassi sheep recorded the highest mean (0.91 kg , 101.63 kg , 104.86 day) compared to the Arabi sheep she was means (0.77 kg , 88.15 kg , 99.15 day) respectively. As well as in proportions of milk components with mean( 5.1 , 4.90 , 5.51) % respectively compared to the Arabi sheep (4.70 . 4.20 . 4.89) ewes with male lambs also exceeded superior ewes with female lambs in daily and total milk production and the lactation period the sex of the lamb did not affect the proportions of milk components the weight of the ewes had a significant effect (P <0.05) in milk production attributes with superior weight of ewes on lower ewes and did not affect the proportions of milk ingredients except for lactose. The type of birth and the age of the ewes did not have a significant effect in all the studied traits except for the superiority (P<0.05) of young ewes on age ewes in the fat percentage of milk.

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