Vocabulary List

fetus (foetus)- эмбрион, зародыш rat – крыса

purify (v) - очищать от pure - чистый females - самки

conceive(v) - зачать, забеременетьmales– самцы

tobeconcerned– быть связанным с чем- либо

abundant(a) - богатый, изобильныйyolk(n) - желток (яйца)

artificially (adv) – искуccтвeнный cereal (a) - зepновой, xлeбный

refine (v) - очищать supply (v) – снабжать

Exercise 1. Read the text "Vitamin E" and answer the following questions:

1. What animals need vitamin E when fetus is being developed?

1. Is sterility in male rats caused by a lack of this vitamin?

3. Where is vitamin E abundant?

Exercise 2. Answer the following questions in Russian and in English:

1. When was vitamin E discovered?

2. What will happen to the fetus in the rat if no vitamin E is present in the ration?

3. Is the lack of vitamin E concerned with lactation in the rat?

4. In what foods and feeds is vitamin E widely distributed?

5. Is it present in the endosperm?

6. Is it supplied by milk, meat and eggs?

Exercise 3. Translate the text "Vitamin E" into Russian

B. Vitamins Required for Growth

Suckling animals will receive plenty of vitamin A in the milk if their dams are fed suitable rations. When they are weaned, care must be taken that sufficient of this vitamin is furnished by well-cured hay, good pasture or other green feed or by yellow corn.

In the case of calves that have been changed from whole milk to skim-milk or milk substitutes at an early age it is especially important to furnish them with choice, green-coloured hay as soon as they will eat it to provide both vitamin A and vitamin D. Young stock on pasture will not suffer from lack of vitamin D, because of the effect of the ultra-violet rays in sunlight.

Under winter conditions, however, young pigs are often severely crippled or even paralyzed by rickets caused by a lack of this vitamin. Also calves often suffer from rickets and they are stunted and badly deformed as a result. These conditions can usually be entirely prevented by the use of well-cured legume hay. Lambs rarely have rickets, probably because they eat much hay, and all good shepherds make a special effort to supply them with hay of good quality.

With the exception of poultry, which need particularly liberal amounts of riboflavin, there is generally no lack of the other vitamins in the rations that are commonly fed to young stock.

Vocabulary List

corn – зерно stunted (a) – чахлый, недоразвитый, низкорослый

cereal (a) - зерновой shepherd (n) - пacтyx

skim milk – снятое молоко to take care - зaботиться

dam- материнское животноеwean(v) – отнимать от мaтepи

substitute (v) - заменять weaning - отъём

ray (n) - луч conceive (v) - зачать

purify(v) - очищатьwholemilk– цельное молоко

Exercise 4. Read and translate the text "Vitamins Required for Growth".

Exercise 5. Render the text using the following plan:

1. Источники поступления витамина А в организм подсосных животных и отъёмышей.

2. Что необходимо сделать при замене в рационе телят цельного молока снятым молоком, чтобы обеспечить поступление витаминов А и D в организм животного.

2. Результаты недостатка витамина D при зимнем содержании поросят и телят.

3. Способ избежать недостатка витамина D.

4. Причина низкой заболеваемости рахитом у ягнят.

5. Часто ли возникает недостаток в других витаминах (кроме А, D)?