| Autor: |
Ola Thomsson, Ulf Magnusson, Ann-Sofi Bergqvist, Lena Eliasson-Selling, Ylva Cecilia Björnsdotter Sjunnesson |
| Jazyk: |
angličtina |
| Rok vydání: |
2018 |
| Předmět: |
|
| Zdroj: |
Acta Veterinaria Scandinavica, Vol 60, Iss 1, Pp 1-5 (2018) |
| Druh dokumentu: |
article |
| ISSN: |
1751-0147 |
| DOI: |
10.1186/s13028-018-0364-x |
| Popis: |
Abstract Production systems with group housing of sows during a part of the lactation are used in certified organic production and can increase the occurrence of lactational estrus thus making batch-wise breeding difficult. The aim of this study was to investigate the occurrence of lactational estrus and time at return to estrus after weaning by following the performance of the sow (change in body weight, back fat and litter size) in three different management routines. The sows and their litters were moved from individual to multi-suckling pen at one (W1; n = 14), two (W2; n = 13), or 3 weeks (W3; n = 16) post farrowing. All sows had a total lactation of 6 weeks. Ovulation was monitored by analysis of fecal progesterone metabolites. Only one sow (W3) ovulated during lactation. Sows in the W2 and W3 groups had a shorter weaning-to-standing estrus interval than W1-sows (2.6 ± 0.3; 2.7 ± 0.2 and 4.0 ± 0.3 days respectively, P |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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