Komplex szaporodásbiológiai menedzsment alkalmazása és ennek eredményei egy nagyüzemi tejtermelö tehenészetben

Translated title of the contribution: Evaluation of a complex reproductive management in a large-scale Holstein-Friesian dairy farm

Szelényi Zoltán, Bajcsy Árpád Csaba, Horváth András, Simon József, Szenci Ottó

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The authors' objective was to introduce a dynamic voluntary waiting period in a Holstein-Friesian dairy farm and making interventions in order to decrease the days open from calving to conception and the Al index, and to increase the first service conception rate from calving until rebreeding and fertilization. They divided the cows into two groups, according to the control reproductive ultrasonographic examinations at 30 to 43 DIM. In the control group the routine reproductive management (Al started from 42th day after calving) was used, while in the study group a dynamic voluntary waiting period of 60 (daily milk production <35 kg) and 90 (daily milk production >35 kg) days was introduced. After it all cows without observed oestrus were synchronized by PGF2α or OvSynch® protocol. Pregnancy was determined by means of ultrasonography between 28 and 42 days after Al and all non-pregnant cows were resynchronized (PGF2α or OvSynch®). The first service conception rate {Figure), the days until first Al (Table 2), the open days (Table 3) , the number of inseminations and services per conception {Table 4) as well as the cost benefit of the treatments {Table 5) were evaluated and compared. Although the calving to conception interval was shorter with 11.8 days, the results have not shown statistically significant differences between the groups. Further studies are needed to evaluate the benefit of using dynamic voluntary waiting period in high producing Holstein-Friesian dairy farms.

Translated title of the contributionEvaluation of a complex reproductive management in a large-scale Holstein-Friesian dairy farm
Original languageHungarian
Pages (from-to)529-536
Number of pages8
JournalMagyar Allatorvosok Lapja
Volume132
Issue number9
Publication statusPublished - Sep 1 2010

ASJC Scopus subject areas

  • veterinary(all)

Fingerprint Dive into the research topics of 'Evaluation of a complex reproductive management in a large-scale Holstein-Friesian dairy farm'. Together they form a unique fingerprint.

  • Cite this