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Volume 35 Issue 11
Nov.  2020
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Article Contents
LI M L, ZHAO B, LI Z J, et al. Factors Affecting Reproductive Performance of Saba Sows [J]. Fujian Journal of Agricultural Sciences,2020,35(11):1252−1257 doi: 10.19303/j.issn.1008-0384.2020.11.011
Citation: LI M L, ZHAO B, LI Z J, et al. Factors Affecting Reproductive Performance of Saba Sows [J]. Fujian Journal of Agricultural Sciences,2020,35(11):1252−1257 doi: 10.19303/j.issn.1008-0384.2020.11.011

Factors Affecting Reproductive Performance of Saba Sows

doi: 10.19303/j.issn.1008-0384.2020.11.011
  • Received Date: 2020-03-16
  • Rev Recd Date: 2020-06-24
  • Available Online: 2020-11-13
  • Publish Date: 2020-11-28
  •   Objective   Reproductive performance of Saba sows affected by the animal breed, parity, mating, and farrowing were investigated to explore means for improvements.  Method  From the 2013-2017 records maintained at Chuxiong Prefecture Pig Breeding Farm in Yunnan province on Saba sows that delivered 182 litters, Duroc×Saba sows (DS) that delivered 67 litters, and Landrace×Saba sows (LS) that delivered 67 litters, the reproductive performances of these sows were compared. The number of parities, insemination methods, and farrowing seasons of the litters by the sows were analyzed using the least square model.  Result  Compared with the Saba sows, DS and LS had 2.56 and 1.98, respectively, more total number born (TNB) (P<0.01) and 2.36 and 1.99, respectively, higher number born alive (NBA) (P<0.01) per litter. In general, the 4th to the 6th parities performed better than the others (P<0.05 or P<0.01), and the highest TNB and NBA occurred on the 6th while the lowest on the 1st and 9th parities. No significant differences were found on the performance whether the sows were impregnated by natural service (NS) or artificial insemination (AI) (P>0.05). However, farrowing in spring and summer rendered more desirable results than in autumn and winter (P<0.05 or P<0.01).   Conclusion  The reproductive performance of Saba sows could be improved by cross-breeding and/or farrowing in spring and summer in a year.
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