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  • 1 Szent István University Department and Clinic for Obstetrics and Reproduction, Faculty of Veterinary Science István u. 2 H-1078 Budapest Hungary
  • | 2 University of Pannonia Georgikon Faculty of Agriculture Keszthely Hungary
  • | 3 Research Institute of Animal Breeding and Nutrition Herceghalom Hungary
  • | 4 Awassi Corporation Bakonszeg Hungary
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Seasonal differences in the resumption of postpartum ovarian activity, milk production and periparturient metabolic status were investigated in lactating non-suckling dairy Awassi sheep in two consecutive experiments. In Experiment 1, autumn-lambing (AL, n = 27) and spring-lambing (SL, n = 37) ewes were investigated. Ovarian activity was monitored by means of individual progesterone (P4) profiles from day 5 to day 100 post partum. Most of the AL dams (89%) ovulated till day 35 after parturition and became cyclic thereafter. Incidence of persistent corpus luteum (CLP) and short luteal phases (sCL) was frequent (18% and 29%, respectively) among non-conceiving dams. In contrast, only 24% of the SL ewes ovulated before day 35. P4 levels during the luteal phase were lower in cyclic animals, and the cycle was longer in SL than in AL animals. No CLP or sCL was detected in the spring-lambing group, and 61% of SL ewes remained acyclic till the end of the trial. Lactation length was significantly longer in SL dams than in AL ewes (P = 0.008). According to the plasma metabolites (BHB, NEFA) and metabolic hormones (insulin, IGF-I, thyroxine) examined, negative energy balance did not appear in any of the animals. However, seasonal differences were seen in IGF-I and thyroxine levels, which were higher in the SL dams. In Experiment 2, influence of additional lighting was studied in autumn-lambing ewes. The long-day photoperiod (LD, n = 23) group was exposed to artificial light from sunset till midnight (approx. 16 h light/8 h dark) from some weeks before the expected date of delivery in mid-September until the end of December. The control group (n = 25) experienced only natural daylength. The first postpartum ovulation tended to occur later in the LD animals than in the controls (P = 0.047). The lactation of the LD group tended to be longer (P = 0.061). NEFA, BHB, insulin, IGF-I and thyroxine levels did not differ between the groups. Conclusions: (i) The ovarian function of the Awassi population is seasonal under temperate continental climate conditions. (ii) The first postpartum ovulation of non-suckling, autumn-lambing dams may occur very early, even before the completion of uterine involution. (iii) Additional artificial lighting may delay the time of first postpartum ovulation in AL ewes. (iv) Postpartum negative energy balance is unlikely to occur in dairy Awassi ewes even in high-producing intensive systems.

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Senior editors

Editor-in-Chief: Mária BENKŐ

Managing Editor: András SZÉKELY

Editorial Board

  • Béla DÉNES (National Food Chain Safety Office, Budapest Hungary)
  • Edit ESZTERBAUER (Veterinary Medical Research Institute, Budapest, Hungary)
  • Hedvig FÉBEL (National Agricultural Innovation Centre, Herceghalom, Hungary)
  • László FODOR (University of Veterinary Medicine, Budapest, Hungary)
  • Balázs HARRACH (Veterinary Medical Research Institute, Budapest, Hungary)
  • Peter MASSÁNYI (Slovak University of Agriculture in Nitra, Nitra, Slovak Republic)
  • Béla NAGY (Veterinary Medical Research Institute, Budapest, Hungary)
  • Tibor NÉMETH (University of Veterinary Medicine, Budapest, Hungary)
  • Zsuzsanna NEOGRÁDY (University of Veterinary Medicine, Budapest, Hungary)
  • Alessandra PELAGALLI (University of Naples Federico II, Naples, Italy)
  • Kurt PFISTER (Ludwig-Maximilians-University of Munich, Munich, Germany)
  • László SOLTI (University of Veterinary Medicine, Budapest, Hungary)
  • József SZABÓ (University of Veterinary Medicine, Budapest, Hungary)
  • Péter VAJDOVICH (University of Veterinary Medicine, Budapest, Hungary)
  • János VARGA (University of Veterinary Medicine, Budapest, Hungary)
  • Štefan VILČEK (University of Veterinary Medicine in Kosice, Kosice, Slovak Republic)
  • Károly VÖRÖS (University of Veterinary Medicine, Budapest, Hungary)
  • Herbert WEISSENBÖCK (University of Veterinary Medicine, Vienna, Austria)
  • Attila ZSARNOVSZKY (Szent István University, Gödöllő, Hungary)

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2020  
Total Cites 987
WoS
Journal
Impact Factor
0,955
Rank by Veterinary Sciences 101/146 (Q3)
Impact Factor  
Impact Factor 0,920
without
Journal Self Cites
5 Year 1,164
Impact Factor
Journal  0,57
Citation Indicator  
Rank by Journal  Veterinary Sciences 93/166 (Q3)
Citation Indicator   
Citable 49
Items
Total 49
Articles
Total 0
Reviews
Scimago 33
H-index
Scimago 0,395
Journal Rank
Scimago Veterinary (miscellaneous) Q2
Quartile Score  
Scopus 355/217=1,6
Scite Score  
Scopus General Veterinary 73/183 (Q2)
Scite Score Rank  
Scopus 0,565
SNIP  
Days from  145
submission  
to acceptance  
Days from  150
acceptance  
to publication  
Acceptance 19%
Rate

 

2019  
Total Cites
WoS
798
Impact Factor 0,991
Impact Factor
without
Journal Self Cites
0,897
5 Year
Impact Factor
1,092
Immediacy
Index
0,119
Citable
Items
59
Total
Articles
59
Total
Reviews
0
Cited
Half-Life
9,1
Citing
Half-Life
9,2
Eigenfactor
Score
0,00080
Article Influence
Score
0,253
% Articles
in
Citable Items
100,00
Normalized
Eigenfactor
0,09791
Average
IF
Percentile
42,606
Scimago
H-index
32
Scimago
Journal Rank
0,372
Scopus
Scite Score
335/213=1,6
Scopus
Scite Score Rank
General Veterinary 62/178 (Q2)
Scopus
SNIP
0,634
Acceptance
Rate
18%

 

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Acta Veterinaria Hungarica
Language English
Size A4
Year of
Foundation
1951
Publication
Programme
2020 Volume 68
Volumes
per Year
1
Issues
per Year
4
Founder Magyar Tudományos Akadémia
Founder's
Address
H-1051 Budapest, Hungary, Széchenyi István tér 9.
Publisher Akadémiai Kiadó
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 0236-6290 (Print)
ISSN 1588-2705 (Online)

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