TY  - JOUR
AU  - Djedović, Radica
AU  - Bogdanović, Vladan
AU  - Stanojević, Dragan
AU  - Nemes, Zsolt
AU  - Gaspardy, Andras
AU  - Cseh, Sandor
PY  - 2016
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/4039
AB  - The objective of this study was to compare the reproductive traits of heifers and the development characteristics of their calves following artificial insemination (AI) with sexed and non-sexed semen. The analysed characteristics included conception rate, gestation length, calf birth weight, calf vigour, stillbirth rate, and twinning rate. Data of 530 calves produced with sexed and 1,163 calves produced with non-sexed semen were analysed. The General Linear Model (GLM) was applied to assess the influence of semen type, farm, season of insemination, the calf's sex and the inseminating sire on gestation length and calf birth weight. With the exception of gestation length (P > 0.05), all other traits studied were significantly (P  lt  0.01) influenced by the type of semen. The conception rate was 55% for conventional and 44% for sexed semen, and the average gestation length was 274.6 and 274.9 days, respectively. The mean calf birth weight was 37.47 kg for non-sexed and 36.75 kg for sexed semen. The stillbirth rate was 6.19% for conventional and 7.54% for sexed semen, while the twinning rate was 3.78% for conventional and 1.13% for sexed semen. The calves produced with non-sexed and sexed semen differed significantly in viability (P  lt  0.001), the latter having a lower calf vigour score. The use of conventional semen did not affect the ratio of female and male calves (52.7:47.3%; P > 0.05); however, artificial insemination with X-sorted sexed semen significantly altered the sex ratio of calves (85.1:14.9%, P  lt  0.01). The results obtained in this investigation are in agreement with the majority of studies which compared the fertility traits, sex ratio and calf characteristics depending on the application of artificial insemination with sexed or conventional semen.
PB  - Akademiai Kiado Rt, Budapest
T2  - Acta Veterinaria Hungarica
T1  - Involuntary reduction in vigour of calves born from sexed semen
EP  - 238
IS  - 2
SP  - 229
VL  - 64
DO  - 10.1556/004.2016.023
ER  - 

@article{
author = "Djedović, Radica and Bogdanović, Vladan and Stanojević, Dragan and Nemes, Zsolt and Gaspardy, Andras and Cseh, Sandor",
year = "2016",
abstract = "The objective of this study was to compare the reproductive traits of heifers and the development characteristics of their calves following artificial insemination (AI) with sexed and non-sexed semen. The analysed characteristics included conception rate, gestation length, calf birth weight, calf vigour, stillbirth rate, and twinning rate. Data of 530 calves produced with sexed and 1,163 calves produced with non-sexed semen were analysed. The General Linear Model (GLM) was applied to assess the influence of semen type, farm, season of insemination, the calf's sex and the inseminating sire on gestation length and calf birth weight. With the exception of gestation length (P > 0.05), all other traits studied were significantly (P  lt  0.01) influenced by the type of semen. The conception rate was 55% for conventional and 44% for sexed semen, and the average gestation length was 274.6 and 274.9 days, respectively. The mean calf birth weight was 37.47 kg for non-sexed and 36.75 kg for sexed semen. The stillbirth rate was 6.19% for conventional and 7.54% for sexed semen, while the twinning rate was 3.78% for conventional and 1.13% for sexed semen. The calves produced with non-sexed and sexed semen differed significantly in viability (P  lt  0.001), the latter having a lower calf vigour score. The use of conventional semen did not affect the ratio of female and male calves (52.7:47.3%; P > 0.05); however, artificial insemination with X-sorted sexed semen significantly altered the sex ratio of calves (85.1:14.9%, P  lt  0.01). The results obtained in this investigation are in agreement with the majority of studies which compared the fertility traits, sex ratio and calf characteristics depending on the application of artificial insemination with sexed or conventional semen.",
publisher = "Akademiai Kiado Rt, Budapest",
journal = "Acta Veterinaria Hungarica",
title = "Involuntary reduction in vigour of calves born from sexed semen",
pages = "238-229",
number = "2",
volume = "64",
doi = "10.1556/004.2016.023"
}

Djedović, R., Bogdanović, V., Stanojević, D., Nemes, Z., Gaspardy, A.,& Cseh, S.. (2016). Involuntary reduction in vigour of calves born from sexed semen. in Acta Veterinaria Hungarica
Akademiai Kiado Rt, Budapest., 64(2), 229-238.
https://doi.org/10.1556/004.2016.023

Djedović R, Bogdanović V, Stanojević D, Nemes Z, Gaspardy A, Cseh S. Involuntary reduction in vigour of calves born from sexed semen. in Acta Veterinaria Hungarica. 2016;64(2):229-238.
doi:10.1556/004.2016.023 .

Djedović, Radica, Bogdanović, Vladan, Stanojević, Dragan, Nemes, Zsolt, Gaspardy, Andras, Cseh, Sandor, "Involuntary reduction in vigour of calves born from sexed semen" in Acta Veterinaria Hungarica, 64, no. 2 (2016):229-238,
https://doi.org/10.1556/004.2016.023 . .

TY  - JOUR
AU  - Nemes, Zsolt
AU  - Vidović, Vitomir
AU  - Lukac, Dragomir
AU  - Ivanković, Ante
AU  - Grubić, Goran
AU  - Komlosi, Istvan
AU  - Gaspardy, Andras
PY  - 2014
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/3437
AB  - The aim of this study was to estimate the total lifetime milk production and non additive genetic effects (recombination and heterosis) of cows with different proportions of Holstein-Friesian genes, obtained from the Serbian Fleckvieh (SF) and the Holstein-Friesian (HF) crossbreeding program in Vojvodina. Upgrading of local breeds with the Holstein-Friesian breed in Vojvodina started in 1971 and continued 2008. Six genotypes of cows (F-1, R-1, R-2, R-3, R-4, R-5) were obtained with increasing percentage of Holstein genes, in order to attain purebred Holstein cows. Of all obtained genotypes, cows of genotype R-4 with a proportion of Holstein genes from 96.87 % had the highest lifetime milk production (20000 kg), followed by cows R-3 with 19950 kg (93.75 % HF genes) and cows R-5 with 19850 kg (98.44 HF genes). Finally the process of upgrading resulted in pure Holsteins with 19780 kg of milk. The total lifetime production of milk fat did not show statistically significant difference (P>0.05) among the genotypes R-1 - R-5 which ranged from 675 to 690 kg. The pure Holstein obtained after sixth intermediate generations had the average lifetime milk fat production of 690 kg. With the increase in the proportion of Holstein-Friesian genes percentage of milk fat was decreased, so that the cows of genotypes R-3, R-4, R-5 and pure Holsteins, had less than 3.5 % milk fat. In relation to the total milk yield, the highest realized heterosis effect was observed in the cows of F-1 generation (h(F1)(R) = 594 kg), while the lowest was observed in generation R-2 (h(R2)(R) =72 kg), where negative effect of recombination was also found (r(R2)(I) =-77 kg). Positive values of the actual and relative of heterosis effect of the milk fat yield was observed in all genotypes, whereas the negative heterosis effect of the milk fat percentage was observed also in all genotypes, with the exception of R-1 and R-2 cows, in which the typical consequence of the positive recombination in the early crossed Holstein-generations was manifested.
PB  - Croatian Dairy Union, Zagreb
T2  - Mljekarstvo
T1  - Estimation of nonadditive genetic impacts on lifetime performance through a grading-up breeding program with Holstein-Friesian
EP  - 267
IS  - 4
SP  - 261
VL  - 64
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_3437
ER  - 

@article{
author = "Nemes, Zsolt and Vidović, Vitomir and Lukac, Dragomir and Ivanković, Ante and Grubić, Goran and Komlosi, Istvan and Gaspardy, Andras",
year = "2014",
abstract = "The aim of this study was to estimate the total lifetime milk production and non additive genetic effects (recombination and heterosis) of cows with different proportions of Holstein-Friesian genes, obtained from the Serbian Fleckvieh (SF) and the Holstein-Friesian (HF) crossbreeding program in Vojvodina. Upgrading of local breeds with the Holstein-Friesian breed in Vojvodina started in 1971 and continued 2008. Six genotypes of cows (F-1, R-1, R-2, R-3, R-4, R-5) were obtained with increasing percentage of Holstein genes, in order to attain purebred Holstein cows. Of all obtained genotypes, cows of genotype R-4 with a proportion of Holstein genes from 96.87 % had the highest lifetime milk production (20000 kg), followed by cows R-3 with 19950 kg (93.75 % HF genes) and cows R-5 with 19850 kg (98.44 HF genes). Finally the process of upgrading resulted in pure Holsteins with 19780 kg of milk. The total lifetime production of milk fat did not show statistically significant difference (P>0.05) among the genotypes R-1 - R-5 which ranged from 675 to 690 kg. The pure Holstein obtained after sixth intermediate generations had the average lifetime milk fat production of 690 kg. With the increase in the proportion of Holstein-Friesian genes percentage of milk fat was decreased, so that the cows of genotypes R-3, R-4, R-5 and pure Holsteins, had less than 3.5 % milk fat. In relation to the total milk yield, the highest realized heterosis effect was observed in the cows of F-1 generation (h(F1)(R) = 594 kg), while the lowest was observed in generation R-2 (h(R2)(R) =72 kg), where negative effect of recombination was also found (r(R2)(I) =-77 kg). Positive values of the actual and relative of heterosis effect of the milk fat yield was observed in all genotypes, whereas the negative heterosis effect of the milk fat percentage was observed also in all genotypes, with the exception of R-1 and R-2 cows, in which the typical consequence of the positive recombination in the early crossed Holstein-generations was manifested.",
publisher = "Croatian Dairy Union, Zagreb",
journal = "Mljekarstvo",
title = "Estimation of nonadditive genetic impacts on lifetime performance through a grading-up breeding program with Holstein-Friesian",
pages = "267-261",
number = "4",
volume = "64",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_3437"
}

Nemes, Z., Vidović, V., Lukac, D., Ivanković, A., Grubić, G., Komlosi, I.,& Gaspardy, A.. (2014). Estimation of nonadditive genetic impacts on lifetime performance through a grading-up breeding program with Holstein-Friesian. in Mljekarstvo
Croatian Dairy Union, Zagreb., 64(4), 261-267.
https://hdl.handle.net/21.15107/rcub_agrospace_3437

Nemes Z, Vidović V, Lukac D, Ivanković A, Grubić G, Komlosi I, Gaspardy A. Estimation of nonadditive genetic impacts on lifetime performance through a grading-up breeding program with Holstein-Friesian. in Mljekarstvo. 2014;64(4):261-267.
https://hdl.handle.net/21.15107/rcub_agrospace_3437 .

Nemes, Zsolt, Vidović, Vitomir, Lukac, Dragomir, Ivanković, Ante, Grubić, Goran, Komlosi, Istvan, Gaspardy, Andras, "Estimation of nonadditive genetic impacts on lifetime performance through a grading-up breeding program with Holstein-Friesian" in Mljekarstvo, 64, no. 4 (2014):261-267,
https://hdl.handle.net/21.15107/rcub_agrospace_3437 .