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Abstract

>49 000 lactations and reproductive data of Holstein Friesian cows, recorded between 1995 and 2001 in Tunisia, were used in this study. Fertility parameters and heritability estimates of days to first service (DTFS), days open (DOP) and calving interval (CI) were 85 days and 0.03, 157 days and...

Author(s)
Hamouda, M. B.; M'rad, M. B.; Hemdene, M.
Publisher
Wageningen Academic Publishers, Wageningen, Netherlands
Citation
Performance recording of animals: state of the art 2004. Proceedings of the 34th Biennial Session of ICAR, Sousse, Tunisia, 28th May-3rd June, 2004, 2004, pp 71-76
Abstract

The results of somatic cell counts from 29 dairy herds realised between 1996 and 2001 were involved in this study in order to determine the amount and variation of somatic cell counts in Tunisian dairy herds. 13 833 individual records were analysed. The result is that the somatic cell count is...

Author(s)
Hachana, Y.; Haddad, B.
Publisher
Wageningen Academic Publishers, Wageningen, Netherlands
Citation
Performance recording of animals: state of the art 2004. Proceedings of the 34th Biennial Session of ICAR, Sousse, Tunisia, 28th May-3rd June, 2004, 2004, pp 159-163
Abstract

Several reasons offered Tunisia a series of extremely positive factors which justified the Italian public participation. Such factors are as follows: geographic vicinity, political stability, religious tolerance, affinity for Italy, a relatively free market with acceptable infrastructures and...

Author(s)
Dago, C. D.; Scrocchi, P.; Marigliano, G.; Guellouz, M.
Publisher
Wageningen Academic Publishers, Wageningen, Netherlands
Citation
Performance recording of animals: state of the art 2004. Proceedings of the 34th Biennial Session of ICAR, Sousse, Tunisia, 28th May-3rd June, 2004, 2004, pp 65-70