Технологические процессы отбора и выращивания племенных бычков
2009
Shlyakhtunov, V.I., Vitebsk State Academy of Veterinary Medicine (Belarus) | Pilyuk, S.N., National Academy of Sciences. Scientific and Practical Center of Animal Breeding (Belarus)
Questions of selection and growing of replacement young animals and bulls-producers are dwelled on in the researches. Studies were carried out at farms of pedigree plants, elevers, and state pedigree enterprises. Effectiveness of selection at early age based on physiological traits and phonotypical traits that let us accurately predict the possibility of basic herd formation with animals of high pedigree value was studied. Technological cycle of selection and growing of animals consists of 3 basic stages: feeding and management at farms of pedigree plants (age from birth till 3-4, from 3-4 till 6 and from 6 till 15-16 months); management and feeding at state pedigree enterprises (age from 15-16 and till the completion of pedigree usage). Each of the above stages in its turn consists of several sub-stages. The final stage of the process is estimation of descendants' quality that includes the period of pedigree usage waiting (so called over-management). So, usage of new and more perfect ways of pedigree calves growing and complex issue solving that determine their effective selection as well as in-time testing or estimation of animals on posterity quality let us accurately estimate the pedigree adaptability of animals or get them the necessary aid of treatment, or culling. These measures greatly cut the period of pedigree animals growing as well as forage spends at 5-8%
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