Researches Regarding the Influence of Calving Interval on the Number of Somatic Cells during Lactation in Romanian Black and White Cows

Authors

  • Simona Baul Banat's University of Agricultural Sciences and Veterinary Medicine, Faculty of Animal Sciences and Biotechnologies, 300645 Timişoara, Calea Aradului, 119, România
  • Ludovic Toma Cziszter Banat's University of Agricultural Sciences and Veterinary Medicine, Faculty of Animal Sciences and Biotechnologies, 300645 Timişoara, Calea Aradului, 119, România
  • Stelian Acatincăi Banat's University of Agricultural Sciences and Veterinary Medicine, Faculty of Animal Sciences and Biotechnologies, 300645 Timişoara, Calea Aradului, 119, România
  • Traian Cismaș Direţia Judeţeană pentru Agricultură, Brăila, România
  • Dinu Gavojdian Banat's University of Agricultural Sciences and Veterinary Medicine, Faculty of Animal Sciences and Biotechnologies, 300645 Timişoara, Calea Aradului, 119, România
  • Iulian Tripon Banat's University of Agricultural Sciences and Veterinary Medicine, Faculty of Animal Sciences and Biotechnologies, 300645 Timişoara, Calea Aradului, 119, România
  • Silvia Erina Banat's University of Agricultural Sciences and Veterinary Medicine, Faculty of Animal Sciences and Biotechnologies, 300645 Timişoara, Calea Aradului, 119, România
  • George Gabriel Răducan Banat's University of Agricultural Sciences and Veterinary Medicine, Faculty of Animal Sciences and Biotechnologies, 300645 Timişoara, Calea Aradului, 119, România

Keywords:

calving interval, dairy cows, Romanian Black and White breed, somatic cells

Abstract

The aim of this paper was to study the influence of calving interval on the number of somatic cells from milk in Romanian Black and White cows. The study was conducted on a total of 125 lactations from 92 cows. Data were recorded and statistically analyzed by ANOVA/MANOVA method determining the means and dispersion indices. The results indicated that calving interval influenced significantly (p < 0.05) changes in the somatic index between calving interval below 350 days and calving interval between 351 and 450 days (0.33). Milk produced from cows with calving interval below 350 days had the smallest somatic index (5,33) which corresponds to a number of somatic cells around 214000 cells/ml. Cows with calving interval between 351 and 450 days had the highest value of the somatic index 5.67, which corresponds to a concentration of 468000 somatic cells/ml.

References

Păcală, N., Corin, N., Biologia reproducerii animalelor. Îndrumător de lucrări practice, Ed. Agroprint Timişoara, 2002

Cziszter, L. T., Milovan, Gh., Sala, C., Morar A., Acatincăi. S., Baul, S., Erina, S., Tripon, I., Petreuş, C., Cercetări asupra compoziţiei chimice şi a numărului de celule somatice din laptele crud de vacă, Lucrări şt Zootehnie şi Biotehnologii, Timişoara, 2007, 40(2), 521-529

Wood, P. D. P., Animal Production, 1969, 11, pp. 307-316

Schmidt, G. H.,van Vleck, L. D., Hutjens, M. F., Principles of Dairy Science, Ed. Prentice Hall, New Jersey, 1988

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Published

2023-11-01

Issue

Vol. 44 No. 2 (2011): Scientific Papers: Animal Science and Biotechnologies

Section

Technologies Applied in Animal Husbandry

License

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This work is licensed under a Creative Commons Attribution 4.0 International License.