STUDY THE AGE OF WEANNING ON WEIGHT DEVELOPMENT OF BULGARIAN SIMENTAL BREED | Проучване възрастта на отбиване върху тегловното развитие на бичета от породата българско сименталско говедо
2011
Stojkov, P., Experimental Station of Agriculture, Vidin (Bulgaria) | Gajdarska, V., Institute of Animal Science, Kostinbrod (Bulgaria) | Kharizanova, Ts., Institute of Animal Science, Kostinbrod (Bulgaria) | Ivanova, T., Agricultural Institute, Shumen (Bulgaria) | Stojkova, R., Institute of Animal Science, Kostinbrod (Bulgaria)
The objective of the study was to determinate the impact of weaning age on weight development, growth and feed for 1 kg gain - growth in calves from the Bulgarian Simmental breed, fattened to 700 kg live weight. Two groups with 12 calves in each were formed. Calves from group I were weaned at the age of 3 months, while those from group II were sucking from their mothers until 7 months of age. It was found that the intensity of growth of the animals was significantly higher in calves sucking to 7 months of age and they have achieved significantly higher average daily gain with 18.81%, - P 0.01 compared to the control group which has realized an average daily gain of 1139 g. for 90-day period. As a result of weaning, which usually causes stress, calves from the second group decreased rate of weight development, but at 12 months of age the average live mass was with 12.44% higher - 448.62 against 399.00, compared to the analogues from the first group, weaned at 3 months of age and the differences for live weight and daily gain were significant - P 0.05 and P 0.01. All data were statistically processed.
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