Name
Shchukina Irina Vladimirovna
Scholastic degree
•
Academic rank
associated professor
Honorary rank
—
Organization, job position
Kuban State Agrarian University
Web site url
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Articles count: 4
In the Krasnodar region there is a unique gene pool of animals both for dairy and meat. To assess the heifers the authors formed five experimental groups of animals, the most common species in the region. The authors studied the main economic, biological and exterior features: live weight, measurements, assessment of the exterior. The studies found that among intensive species with the largest body weight throughout the growing period, in 8-month old Charolais heifers superior Simmental ones at 17.4 kg. In one year old Simmental heifers were 9.2 kg (R˂0,05) ahead of Charolais and in 15 months – 10 kg (R˂0,05). Over the entire period of growth the highest rates of relative growth rates of heifers were obtained by red steppe breed type named Kuban, which had an advantage over the Aberdeen-Angus – 19.1%, Charolais – 5.6%, Hereford – 6.2%, and the difference between them and Simmental weren’t fixed. When growing, the animals become less tall, more stretched, wide and massive. We have noted that during the period of cultivation we had increased indices: stretch (9% – Red Steppe, 13.8% – Charolais, 16.1% – Hereford); chest (5.4% Aberdeen Angus). This reduces the index of long legs of red steppe – 5.6%, 10.9% for Charolais. The study of linear growth of animals confirms that the animal meat breeds of live weight increase was due to the extension of the body and increase the width of the pelvis and chest. Some different facts were observed in heifers of Red Steppe breed. For them, the most characteristic increase in the width of the chest was 1.44 times, as well as increasing the depth of the chest and chest girth behind the shoulders
The author has examined peculiarities of meat
productivity of animals of the most common breeds:
Charolais, Simmental, Aberdeen Angus, Hereford,
Kuban type of Red Steppe. As a result of the
slaughter carried out for younger group achieved 15
months age, the Charolais breed bulls exceeded
peers of Kuban type on slaughter weight to 60.9 kg
(20.9 %), Aberdeen Angus – 53.8 kg (18.5 %),
Hereford and Simmental respectively – to 35.1 and
24.8 kg (8,5-12,0 %). By the age of 18 months their
superiority increased respectively by 56.9; 57.5; 55.8
and 29.9 kg (16.8; 16.9; 16.5 and 8.82%). Halves of
bodies of the Kuban breed (considering the specific
type of boneless beef output) aged 15 months gave
way to all the groups: Charolais and Angus – by 1.1-
1.5%, Simmental and Hereford – by 0.4-0.6%. The
yield of premium beef exceeds the standards in all
genotypes: Kuban – by 9.5%, beef breeds – by
11.2% (Charolais) and 19% (Simmental). The
balance beetween dry matter and moisture is in the
optimal range (0.43: 1-0,73: 1). At 15 months of age,
in the number of dry matter, Charolais bulls
outnumbered Aberdeen-Angus and Red steppe at
5.1-5.2%, Simmental and Hereford - on 3,0-4,9%.
With age, in the meat of calves of beef breeds the
level of fat increased, for example, in Hereford and
Simmental 0.3-0.5%, Aberdeen Angus and
Simmental – 0.7-0.8%. In the middle of a sample of
ground beef of carcasses of the calves of Charolais
breed at the age of 18 months it contained more
protein than in the meat of the calves of Red steppe
(1.2%, Hereford (1.1%), Angus (1.4%), Simmental
(1,3%). All the meat of the carcasses of the calves of
specialized beef breeds was of high quality and diet:
one part of the protein had 0.59 parts of fat
(Aberdeen Angus) and 0.45 parts (Hereford)
The article contains complex research results dedicated
of reproduction the cattle of the animal breeding
industry in the agricultural holding called “Kuban”.
Key indicators characterizing reproductive function at
cows were set; they were estimated in terms of the
plans of the economy in the milk cattle breeding
industry. The reduced values of the birth-rate of calves
were revealed on 100 cows and in the term of the
production use of cows, their main reasons were set.
The performed calculations prove the possibility of
increasing the profitability of milk production
A fundamental element of the technology is the use
of beef cattle in the economic purposes of biological
resources of animals. In the development of modern
technologies there is a lack of focusing on one of the
main features of cattle – its own perception of the
environment, that is panoramic (binocular) vision. In
the modern cattle breeding we focuse on the
development of a variety of exterior signs. However,
one of the indicators that affect the behavioral
responses of animals (the degree of development of
the muzzle and the forehead of the animal, the shape
of the head) does not have due importance. The
author has conducted its degree of development
studies in bulls and cows of different breeds. Along
the length of the head, meat breeds (Hereford,
Aberdeen Angus, Simmental, Charolais) gave way to
Red Steppe 14.9; 15.5; 5.5 and 5.0 cm (27,5; 28,6;
10,1 and 9,2%, P