Evaluation and selection of young replacement animals in the formation process of large white breed line of pigs
Abstract
When forming a line of large white breed the development indices and meat traits of young animals were shown: the age of reaching live weight of 100 kg - 181 days, body length - 124 cm, thickness of back fat over the 6-7th thoracic vertebrae and over the last rib - 14,8 and 11,0 mm, the output of lean meat in the carcass with skin, head and feet - 56,7 %. Correlation ratios between the indicated indices were obtained. With the help of ultrasonic device of "real time" the intensity of fat deposition and muscle tissue from 12 pigs of large white breed of meat type was studied. It was determined that fat deposition was uniform in the age periods of 105-135 and 135-165 days, while muscle synthesis reduced in the second period by 1.6 times. It is proposed to increase the concentration of nutrients in the diet for young animals during the period of 135-165 days to completely meet their requirements for affordable protein, amino acids, vitamins, macro-and micronutrients.
About the Authors
N. V. Sokolov
FSBRE «North Caucasian Research and Development Institute for Animal Husbandry»
Russian Federation
Russian Federation
D. A. Karmanov
FSBRE «North Caucasian Research and Development Institute for Animal Husbandry»
Russian Federation
Russian Federation
N. G. Zelkova
FSBRE «North Caucasian Research and Development Institute for Animal Husbandry»
Russian Federation
Russian Federation
References
1. Chesnais, J. P. The Canadian swine improvement system / J. P. Chesnais // Canadian Centre for Swine Improvement Inc. [Electronic resource]. - 1996. - Mode of access : www.risif.com/conferences/1996/csis.htm.
2. Claus, A. The measurement of natural interfaces in the pig's body with ultrasound / A. Claus // Fleidchwirtschaft. - 1957. - Vol. 9. - P. 552-557.
3. Hazel, L. N. Ultrasonic measurements of fatness in swine / L. N. Hazel, E. A. Kline // J. Anim. Sci. - 1959. - Vol. 18. - P. 815-819.
4. Application of ultrasonic reflection techniques in evaluating fatness and leanness in pigs / J. F. Price [et al.] // J. Anim. Sci. - 1960a. - Vol. 19. - P. 381-387.
5. Development and application of ultrasonic methods for measuring fat thickness and rib eye area in cattle and hogs / J. R. Stouffer [et al.] // J. Anim. Sci. - 1961. - Vol. 20. - P. 759-767.
6. Сравнительная характеристика прижизненной и послеубойной оценок содержания постного мяса в туше приборами PIGLOG-105 и FAT-O-METER / И. П. Шейко [и др.] // Проблемы интенсификации производства продуктов животноводства : тез. докл. междунар. науч.-практ. конф. - Жодино, 2008. - С. 146-147.
7. Ultrasonic measurement of fattening rate swine / W. E. Urban [et al.] // J. Anim. Sci. - 1965. - Vol. 24. - P. 830.
8. Moody, W. G. Study of backfat layers of swine / W. G. Moody // J. Anim. Sci. - 1966. - Vol. 25. - P. 809.
9. Cooksley, M. Backfat thickness and weight / M. Cooksley // Nebraska swine rep. - 1977. - P. 23-25.
10. Ahlschwede, W. T. New adjustment factors for performance testing / W. T. Ahlschwede // Nebraska swine rep. - 1978. - P. 22-24.
Review
For citations:
Sokolov N.V., Karmanov D.A., Zelkova N.G. Evaluation and selection of young replacement animals in the formation process of large white breed line of pigs. Zootechnical Science of Belarus. 2013;48(1):156-164. (In Russ.)
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