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Морфологические показатели крови и естественная резистентность телят при разных методах выращивания

Морфологические показатели крови и естественная резистентность телят при разных методах выращивания

Abstract

Цель работы определение влияния различных технологических приемов выращивания телят в молочный период на морфологический состав крови и естественную резистентность. В условиях эксперимента значительные отклонения показателя иммунных белков у животных, вскармливаемых искусственно и находящихся на подсосе под матерями в первые дни жизни, говорят о том, что содержание новорожденных телят с матерями первые 10 дней после рождения благоприятно сказывается на их клинико-физиологическом состоянии и резистентности. Минимальное содержание иммунных белков в группе, выращенной под коровами-кормилицами, было выше, чем в контроле, на 6,11 мг/мл (Р<0,01), бактерицидной активности сыворотки крови на 98%. Активность комплемента была выше на 8,11 ед. (Р<0,001) в группе, выращенной с использованием традиционной технологии. Содержание лизоцима и титра гетерогемагглютининов находилось практически на одном уровне. К 2-месячному возрасту гематологические показатели (содержание лейкоцитов, эритроцитов и гемоглобина) практически не различались. При показателях резистентности в группе телят, выращенных по методу регламентированного подсоса под коровами-кормилицами, четыре показателя из девяти имеют максимальное значение. В контроле титр нормальных антител достоверно ниже на 12,0, а иммунные белки значительно выше на 16,53 мг/мл, чем в опытной группе, при большом разбросе данных, что связано с повышенной заболеваемостью животных желудочно-кишечными (47%) и респираторными (13%) заболеваниями. Такая же картина наблюдается и в 4-месячном возрасте. В 6-месячном возрасте достоверных различий по морфологическому составу крови и естественной резистентности между группами не обнаружено.

The research goal is to determine the effect of different calf rearing techniques during suckling period on blood morphological composition and natural resistance. Under experimental conditions, significant variations of immune protein indices in animals under hand rearing and in those with suckler cows during the first days of life prove that keeping newborn calves with their nursing cows for the first 10 days after calving is beneficial for their clinical and physiological condition and resistance. The minimum content of immune proteins in the group reared by nursing cows was greater than that in the control group by 6.11 mg mL (P < 0.01), and blood serum bactericidal activity was higher by 98%. The complement activity was higher by 8.11 units (P < 0.001) in the group reared by the conventional technique. The content of lysozyme and heterohemagglutinin titer was practically at the same level. By the age of 2 months the hematologic indices as WBC count, RBC count and hemoglobin content practically did not differ. In the group of calves reared by scheduled nurse-cow method, in terms of resistance, four of nine resistance indices had the maximum value. In the control group, the whole antibody titer was significantly lower by 12.0, and immune protein content was much greater by 16.53 mg mL than in the trial group with a considerable scatter of data due to increased incidence of gastrointestinal (47%) and respiratory (13%) diseases. The same pattern is observed at the age of 4 months. At the age of 6 months any significant differences in blood morphological composition and natural resistance between the groups were not found.

Keywords

ПОДСОС,ТЕЛЯТА,КРОВЬ,ЕСТЕСТВЕННАЯ РЕЗИСТЕНТНОСТЬ,КОРОВА-КОРМИЛИЦА,ЭРИТРОЦИТЫ,ЛЕЙКОЦИТЫ,ГЕМОГЛОБИН,ИММУННЫЕ БЕЛКИ,БАКТЕРИЦИДНАЯ АКТИВНОСТЬ СЫВОРОТКИ КРОВИ,SUCKLING PERIOD,CALVES,BLOOD,NATURAL RESISTANCE,NURSING COW,RED BLOOD CELLS,WHITE BLOOD CELLS,HEMOGLOBIN,IMMUNE PROTEINS,BLOOD SERUM BACTERICIDAL ACTIVITY

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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Average
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