PRODUCTIVITY OF YOUNG KLEIVS UNDER COVERAGE OF FULL- PURIFICATION COMBIQUES WITH DIFFERENT LEVELS OF CALCIUM AND PHOSPHORUS

Abstract

The effect of feeding fodder with different levels of calcium and phosphorus on productive qualities and cost of feed in young rabbits.

For experiments at the age of 45 days, 120 heads of rabbits were selected taking into account sex, age, origin, and body weight, of which 6 groups were formed according to the principle of analogues, 20 heads each (10 males and 10 females).

During the scientific and technical experience, rabbits from all groups were fed full-grain granulated mixed fodders balanced for all nutrients and biologically active substances in accordance with the recommended standards. The difference in the feeding of animals in the control and experimental groups was due to different levels of calcium and phosphorus in the diet.

In the composition of mixed fodders for rabbits of control and experimental groups, the set of ingredients was the same.

At the age of 45 days, a similar live weight was observed in experimental youngsters of all groups, which in subsequent age periods (60, 75, 90, 105 and 120 days) changed differently, depending on the content of calcium and phosphorus in the diet.

At 120 days of age, the highest live weight was found in animals of the 2nd group, which were fed compound feed with a content of 0.5% calcium and 0.3% phosphorus, which was 385,0; 473,0; 467,0; 489,0 and 528,0 g more (P <0.001) compared with this indicator in the analogs of the 1, 3, 4, 5 and 6 groups.

Unequal changes in the live weight of the young in the individual groups were the result of different intensities of its growth. This is evidenced by the growth in the live weight of animals during individual age periods.

At the age of 106-120 days, animals of the 2 group for the average daily gain prevailed (P <0,001), respectively, by 22,90; 35,86; 15,41; 35,86 and 25,29% of the young of the 1, 3, 4, 5 and 6 groups. At the same time, rabbits of the 3rd and 5th groups

were lower by this indicator (P <0,01) by 15.05%, respectively, to the analogs of the 4 group.

By relative growth at the age of 106-120 days, animals of the 2 group prevailed (P <0,001), respectively, by 22,90; 35,86; 15,41; 35,86 and 25,29% of the young of the 1, 3, 4, 5 and 6 groups. At the same time, rabbits of the 3rd and 5 groups were lower by this indicator (P <0.01) by 15,05%, respectively, to the analogs of the 4 group.

It was established that the optimal settings to ensure their calcium and phosphorus in the period of 45-60 days of age have respectively 0,6 % and 0,3 %, while in periods 61- 90 and 91-120 days – 0,5 % calcium and phosphorus 0,3% per 100 grams of complete feed.