Dashkovs'kyj O. The milk productivity of cows and veterinary-sanitary examination of milk in the technogenic areas polluted by lead improvement by iron, copper and vitamin E

Українська версія

Thesis for the degree of Candidate of Sciences (CSc)

State registration number

0402U000075

Thesis Registration Form

0402U000075.pdf

Applicant for

Specialization

  • 16.00.06 - Гігієна тварин та ветеринарна санітарія

14-12-2001

Specialized Academic Board

Д 35.826.01

Stepan Gzhytskyi National University of Veterinary Medicine and Biotechnologies Lviv

Essay

The research object: feeding-stuffs [feed], water, blood, milk, cows of a black-speckled breed. The research purpose : increasing the cows' productivity, improvement of veterinary-medical indices of milk quality after chronic leaden intoxication of the cows' organisms. The research methods: clinical, biological, chemical and biochemical ones. The theoretical and practical results, novelty: it has been determined leaden contents in water, feeding-stuffs and in the cows' tissues by complex researches. Methionates of ferum and cuprum together with vitamin E by their competitive interaction in the intestines reduce the leaden absorption into the cows' organisms. A s a result of such feeding the content of the total protein of blood has been increased for 9,7 %, due to albumen [ for 4.55-5.84 %] and the level of the L-, B and J-globulin has been slightly lowered in the second part of lactogenesis for 1.56, 1.76, 2.46% accordingly, the level of calcium has been increased for 7,7-12%, magnesium- for 3,5-14, 1 % , ferum- for 11,4-19,1 % and the level of lead has been lowered for 29,7-33,8 % At the same time it has been marked the increase of milk productivity of the examining cows [ the raising of average daily milk yield of natural fattiness for 14, 1 % , the quantity of milk fat for 12,4-20,2%] and improvement of qualitative indices of the milk. there have been worked out a number recommendations for use of methionates of ferum, cuprum and vitamin E as fodder additives for cows during lactation in the regions [ zone] of very high leaden loading. The level of introduction: it is being planned. The sphere [ field] of application: veterinary-medical examination, physiology.

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