Evaluation of the effect of abiotic factors on the weight development of young male breeding animals of the Ile de France breed in Bulgaria
Keywords:
Ile de France sheep, live weight, average daily gain, year of birth, season, farmAbstract
Subject of the study were 123 purebred male lambs of the breed Ile de France. The animals were
born in the period 2017–2020 and were raised on three farms in the northern part of Bulgaria. Monitored was the weight development of 123 male individuals from birth to 9 months. For this purpose,
the following traits were measured: live weight at birth, at 30 days, at 70 days and at 9 months. The average daily gain of the animals realized in the studied periods was calculated. The data were obtained
from the Pedigree book of the breed. The variance analysis was made on the basis of a multifactor
linear-statistical model for each studied age. The studied factors inducing a specific variance were
year of birth, lambing season and farm. It was found that the year of birth had a significant effect on
the live weight trait of male lambs from the Ile de France breed up to 70 days of age. The farm factor
had a significant effect on live weight after 30 days, and the lambing season had an effect on all ages
studied. Depending on the farm, the realized gain by periods indicated a significant specific variance
after 30 days of age, the 30–70 day season and the year for the three studied periods. The average live
weight at birth was 5.193 kg, at 30 days – 15.766 kg, at 70 days – 30.739 kg and at 9 months – 68.910
kg. The average daily gain of male Ile de France lambs in the first month after birth was 0.362 kg,
0.387 kg up to 70 days and 0.192 kg between 70 days and 9 months of age. The obtained results for live
weight and gain from birth to 9 months of age confirmed the good adaptation of the breed in Bulgaria
and the opportunity for realization its potential for high growth intensity at an early age.
References
Achkakanova, E., & Staykova, G. (2019). Evaluation of the main productive traits of Ile de France sheep in Bulgaria. Bulgarian Journal of Agricultural Science, 25(1), 69-72.
Achkakanova, E., & Staykova, G. (2019). Effect of different sources of specific variance on live weight and daily gain of Ile-de-France sheep in Bulgaria. Journal of Mountain Agriculture on the Balkans, 22(2), 37-49.
Achkakanova, E., Minkova, T., & Nikolov, V. (2020). Growth of lambs of the Ile-de-France breed from birth to weaning and factors affecting it. Scientific Papers: Series D, Animal Science-The International Session of Scientific Communications of the Faculty of Animal Science, 63(1) 13-18.
Dimitrov, I. (1978 а). Characteristics of Selection Signs of the Ile-de-France Breed, Bred in Bulgaria, I. Fertility, Weight Development and Meat Properties of Lambs, Animal Sciences, 4, 58-67, (Bg).
Dimitrov, I. (1978 b). Characteristics of Selection Signs of the Ile-de-France Breed, Bred in Bulgaria, II. Live Weight and Wool-Yielding, Animal Sciences, 5, 41-48, (Bg).
Dimitrov, I., Georgieva, Е., & Ivanov, I. (1982). Phenotypic parameters of basic productivity qualities of sheep from the Ile-de-France breed, bred in the Institute of Cattle and Sheep Breeding–Stara Zagora. Animal Science, 3, 20-26.
Dimitrov, I., & Kaleva, S. (1987). Analysis of live weight and fertility signs of the Ile-de-France breed. Animal Sciences, 10, 3-9.
Dimitrov, I. (1988). Development of a specialized synthetic line and use of the Ile-de-France breed for improving the meat properties of lambs (Doctoral dissertation, Dissertation). Sofia, Bulgaria.
Dimitrov, I. (1991). Introduction of indices in sheep selection by fertility and by breeding for meat. Animal Science, 1-4. 36-39, (Bg).
Dimitrov, I., Stankov, I., Slavov, R., & Achkakanova–Dimitrova, E. (2011). Selection program for breeding the Ile-de-France. Stara Zagora, 38.
Ivanova, T. (2020). Effect of the inclusion of palm oil in the diet of female lambs. Zhivotnov’dni Nauki/Bulgarian Journal of Animal Husbandry, 57(6), 39-41.
Ivanova, T., & Raicheva, E. (2017). Analysis of the live weight and the gain of lambs from the flock of Ile de France breed according to genealogical lines. Zhivotnov’dni Nauki/Bulgarian Journal of Animal Husbandry, 54(2), 3-9.
Laleva, S. (1996). Reproductive ability of sheep from different productivity directions (Doctoral dissertation, Dissertation, Sofia, Bulgaria), 166.
Laleva, S., Slavova, P., Popova, J., & Boykovska, G. (2006, June). Zh. Krastanov, 2006. Study of Fertility and Live Weight in Lambs from the Breeds Mouton Sharole, Ile de France, Thracian Fine-Fleece Breed and her Crosses. In International Science Conference–Stara Zagora (pp. 1-2). Livestock Breeding, 384-387.
Laleva, S., Slavova, P., Ivanova, T., Kalaydzhiev, G., Popova, Y., Ivanov, N., & Metodiev, N. (2020). Phenotypic characteristics of breeding traits in Ile de France sheep. Zhivotnov’dni Nauki/Bulgarian Journal of Animal Husbandry, 57(3), 23-30.
Marinova, P. (1976). Study on the variability of the main breeding characteristics of sheep and goats with Ile de France breeds (Doctoral dissertation, Dissertation, Sofia).
Metodiev, N., & Raicheva, E. (2008). Study on fertility of sheep breed Ile de France. In Proceedings of the scientific conference “Traditions and Modernity in veterinary medicine”, University of Forestry, Sofia (pp. 48-54).
Metodiev, N., Todorov, N., & Raicheva, E. (2010). Sexual activity and use of non-hormonal methods for synchronization of fertility and increasing litter size of ewes from the Ile de France breed. Zhivotnov’dni Nauki, 47(3), 15-23.
Raicheva, E., & Ivanova, T. (2005). Effect of lambing season, type of and sex on the live weight and the gain of Ile de France. J. Anim. Sci, 5, 222-226.
Raicheva, E., & Ivanova, T. (2010). Live weight and gain at sheep from Ill-de-France breed according to some factors. Zhivotnov’dni Nauki, 47(5), 10-15.
Slavov, R. (2007). Opportunities for improvement of sheep from the North-eastern Bulgarian fine-fleece breed–Dobrudjan type (Doctoral dissertation, Doctoral dissertation, PhD Dissertation, Stara Zagora).
Bilan du Contrôle de Performances Ovins Allaitants - Campagne (2019), Institut de l’Elevage /IDELE/, INRAe, Races de France.
France Génétique Elevage. (2019).
INSEM OVIN. (2020)
Downloads
Published
Issue
Section
Categories
License
Copyright (c) 2024 Bulgarian Journal of Animal Husbandry
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
