Influence of starter compound feed on fattern and meat indicators during early weaning of lamb of different genotypes

The article presents data on fattening young sheep of different genotypes obtained as a result of crossing ewes of the North Caucasian breed with rams of meat breeds of foreign selection. The introduction into the feeding diet of young sheep of different genotypes of starter feed containing milk replacer in an amount of 5.0% of the feed weight during early weaning from ewes (at 3 months) had a positive effect on the consumption of feed nutrients: in crossbred rams of the North Caucasian genotype, meatwool × Ile-de-France (SK × IDF) dry matter ingestion was higher than that of peers of purebred North Caucasian animals (NC) by 0.03 kg, crossbreds of North Caucasian × Charolais (SK × Sh) by 0.06 kg or 8.4 and 18.4%, respectively, for metabolic energy – 8.2 and 17.9%, for crude protein – 8.1 and 17.6%.

A positive effect of the use of starter feed in the diet on the growth rate of young sheep killed at an early age was revealed. The absolute and average daily increases in live weight were highest at the age of 5.5 months in crosses of the SK × IDF genotype than in analogues of purebred SK and SK × Sh crosses by 6.1 and 8.3% and 5.9 and 8.5%.

The results of the control slaughter showed that in terms of slaughter weight, rams of the SK × IF genotype were superior to peers of purebred SK and SK × Sh crosses by 6.4 and 7.3%, in meat-pulp weight by 11.1 and 12.1%, and meatiness coefficient by – 0. 40 and 0.43 abs. units.

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