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Abstract

The recent field trials indicate that acceptable fertility with frozen semen may not differ significantly from the fertility of commercial fresh-chilled semen. The success rate of insemination is considered to be result of the interaction of three major factors: (1) the quality of frozen-thawed...

Author(s)
Horváth, A.; Szenci, O.
Publisher
Herman Ottó Institute Nonprofit Ltd., Budapest, Hungary
Citation
Magyar Állatorvosok Lapja, 2018, 140, 6, pp 323-331
Abstract

Background: Heifer raising represents 15-20% of the total milk production costs, but the management of replacement heifers is often neglected. The goal of replacement heifer programmes is to reduce raising costs, while maximizing future profitability. Objectives: The aim of our study was to survey...

Author(s)
Fodor, I.; Walter, B.; Monostori, A.; Abonyi-Tóth, Z.; Ózsvári, L.
Publisher
Herman Ottó Institute Nonprofit Ltd., Budapest, Hungary
Citation
Magyar Állatorvosok Lapja, 2018, 140, 2, pp 67-74
Abstract

Background: The reproductive performance of the Hungarian dairy cattle population has been continuously declining since the early '80s. Objectives: The aim of our study was to survey the reproductive management practices and performance in Hungarian dairy herds in order to assess the current...

Author(s)
Fodor, I.; Búza, L.; Ózsvári, L.
Publisher
NAKVI, Budapest, Hungary
Citation
Magyar Állatorvosok Lapja, 2016, 138, 11, pp 653-662
Abstract

The authors examined the ovarian function of two sheep breeds using hormone analytical and laparoscopic methods between April and June. It was observed that the fertility in spring and early summer breeding was usually lower, and alternative methods such as hormonal treatments and biotechnological...

Author(s)
NovotninéDankó, G.; Márkus, S.; Árnyasi, M.; Magyar, K.
Publisher
Állattenyésztési és Takarmányozási Kutatóintézet, Herceghalom, Hungary
Citation
Állattenyésztés és Takarmányozás, 2009, 58, 3, pp 205-212
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...

Author(s)
Szelényi, Z.; Bajcsy, Á. C.; Horváth, A.; Simon, J.; Szenci, O.
Publisher
Magyar Mezógazdaság KFT, Budapest, Hungary
Citation
Magyar Állatorvosok Lapja, 2010, 132, 9, pp 529-536
Abstract

The objective of this study was to determine the effect of plasma urea-nitrogen (UN) concentrations on the pregnancy rate of dairy cows. The cows were grouped according to their production level, and feed rations were given according to the NRC recommendations for essential nutrients....

Author(s)
Szenci, O.; Simonsen, I.; Bajcsy, C. Á.; Perényi, Z.; Karen, A.; Sulon, J.; Beckers, J. F.
Publisher
Magyar Mezógazdaság Kiadó KFT, Budapest, Hungary
Citation
Magyar Állatorvosok Lapja, 2003, 125, 8, pp 458-464
Abstract

The testicular thermoregulation of dairy bulls was studied in a basic research programme with the help of custom needle thermocouples and a computerized, multichannel data collector system. A single GnRH injection starts the testicular thermoregulation and the above mentioned equipment are used for ...

Author(s)
Gábor, G.; Szász, F.
Publisher
Állattenyésztési és Takarmányozási Kutatóintézet, Herceghalom, Hungary
Citation
Állattenyésztés és Takarmányozás, 2003, 52, 2, pp 112-121
Abstract

Oestrus and fertility of rabbit does at day 10 postpartum is severely impaired. However, they are still preferably inseminated on this day because of other advantages of the 42-day cycle. Temporary disruption of suckling before artificial insemination (AI) has been shown to improve the kindling...

Author(s)
Virág, G.
Publisher
Állattenyésztési és Takarmányozási Kutatóintézet, Herceghalom, Hungary
Citation
Állattenyésztés és Takarmányozás, 2003, 52, 2, pp 162-166

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