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COMPARATIVE IMMUNOLOGICAL AND HAEMATALOGICAL CHARACTERISTICS OF SHEEP PERFORMANCES DIFFERENTIATED FROM EACH OTHER
BY FINENESS OF WOOL

Ismailov, I.
State Agricultural Academy
Stavropol, Russia

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ABSTRACT

It is worth mentioning that such protein fractions as -globulin in ewes with thin wool has the least size in comparison with the ewes with coarse wool of the same age.

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INTRODUCTION

Improvement of the existing breeds of animals and creation of new productive breeds and flocks of animals is the basic task of present day selection.
Flocks of semi-fine wool, mutton-wool sheep of the North Caucasian breeds are created as replacements for the low-productive merino sheep on the experimental training farm of the Stavropol State Agricultural Academy.
At present the experimental training farm flock consists of purebred animals having a wide range of productive characteristics. Therefore, necessity appeared to determine constitutionally productive types of animals best suited to the zone with unstable rainfall and having good productive qualities, early evaluation of productive and pedigree qualities of animals. Working out on this basis selection methods gives possibilities for pedigree livestock-raising to reduce selection project expenditures.
In solving this problem, the evaluation of potential possibilities of animals by studying interior characteristics may give much information. The most important indicator is blood, as fluid tissue taking part in all metabolic processes, and blood informs to some extent about all changes in an organism.
The purpose of our research is to determine differences in hematological and immunological performances of semi-fine, mutton-wool breeds with different fineness of wool, kept in new (for them)soil and climatic conditions.
MATERIAL AND METHODS

Studying of immunological and haematological performances of semifine wool, mutton-wool breeds was carried out parallel with a study of zootechnical parameters of three groups of sheep with different fineness of wool, in the range of grading quality from 60 to 48.
Sheep were divided unto groups by the constitutional type of sheep; one of the phenotypic indicators is fineness of wool.
Animals with fine wool of 60-58 grading quality were included in the first group animals with wool of 56-50 grading quality were included in the second group; animals with wool of grading quality 48 were included in the third group. Amount of erythrocytes, hemoglobin, leucocytes and common protein with its fractions (akbumin, globulin) was determined in ewes and their offsprings.

It was noted that all studied performances varied in normal proportion and provided physiological functioning of the organism. In a comparative aspect, group differences are not exactly proven (Table 1).

Table 1. Performances of morphological content and protein picture of blood in ewes

Performance

Form of measure

Group 1.

Group 2.

Group 3.

Erythrocytes

    x 1012 /l

    9.34

    10.1±0.21

    10.4±0.46

Hemoglobin

    G/l

    88±2.1

    91±2.6

    94±1.9

Leucocytes

    x109 /l

    9.29±0.61

    9.82±0.47

    8.28±0.66

Common protein

    G/l

    65.3±1.80

    67.4±1.40

    65.9±1.46

Albumin

    G/l

    33.3±1.24

    35.2±1.31

    35.6±1.22

_-globulin

    G/l

    8.70±1.21

    14.1±1.21

    13.8±1.19

_-globulin

    G/l

    9.40±1.70

    8.90±1.50

    10.0±1.50

_- globulin

    G/l

    12.6±1.20

    14.1±1.40

    13.6±1.20

The amount of erythrocytes in animals with wool fineness of 58 grading quality was 9.44x1012/litres, but in animals with wool fineness of 56-50 grading quality and 48 the amount was correspondently 10.1x1012/litres and 10.4x1012/litres. The same tendency is observed in sheep by the content of hemoglobin, i.e. content of hemoglobin in the blood of sheep is increasing with the process of wool coarsening. We think this fact may be explained by the intensive character of the oxidation-reduction processes.
Studying of common protein content and its fractions in blood showed that it is in a range of physiological norms, but the largest content of common protein is found in animals with wool fineness of 56-60 grading quality (67.4 g/litres) the least content is found in animals with wool fineness of 58 grading quality (65 g/litres).
Sheep with wool fineness of 58 grading quality have a reduced content of all protein fractions in the blood. This fact informs us about the immunity reduction of an organism. Amount of total protein and protein fractions are in the range of physiological norms in animals with wool of 56-60 grading quality. Thus we may say that good immunological and other processes are taking place in sheep of that given group (Table 2).
Table 2. Performances of morphological content and protein picture of blood in lambs

Performance

Form of measure

Group 1.

Group 2.

Group 3.

Erythrocytes

    x1012 /l

    10.21±0.42

    10.64±0.61

    10.92±0.36

Hemoglobin

    G/l

    120±1.6

    128±1.2

    116±1.4

Leucocytes

    x109 /l

    4.16±0.17

    4.39±0.22

    4.00±0.24

Common protein

    G/l

    67.33±0.70

    62.8±0.40

    70.0±0.28

Albumin

    G/l

    26.3±0.90

    30.1±0.60

    32.1±0.41

_- globulin

    G/l

    8.30±0.80

    10.4±0.70

    8.80±0.40

_-globulin

    G/l

    6.10±0.70

    5.90±0.60

    6.70±0.40

_- globulin

    G/l

    14.7±0.70

    17.8±0.50

    18.8±0.80

CONCLUSIONS

It may be concluded that the same tendency is observed in lambs as in mature animals by examining data of the blood picture (Table 2). It was shown that while the amount of erythrocytes is increasing, the content of protein in blood is decreasing in the process of animals maturing.
Analysis of haematological performances shows that sheep with wool fineness of 50-56 grading quality have more advantages than sheep of the other two groups. But these advantages are not finally proved and serious correlation between haematological performances and sheep productivity is not finally affirmed.
This condition is affirmed by immunological data. A bacteriological and lizacim activity difference between groups is not finally proved. And these data do not seriously influence productivity of animals.
At present, investigations of immunological performances are carried out to find parameters that are necessary for early forcasting of animal productivity by blood.

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