Effects of Ad libitum Feeding to Lactating Sows on Feed Intake and Subsequent Productivity

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  • ZUSHI Naomi
    Faculty of Agriculture, University of Miyazaki
  • FURUTANI Aina
    Faculty of Agriculture, University of Miyazaki
  • NAKATAKE Shingo
    Miyazaki Prefectural Economics Federation of Agricultural Cooperatives
  • SASAKI Yosuke
    Faculty of Agriculture, University of Miyazaki Organization for Promotion of Tenure Track, University of Miyazaki

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Other Title
  • 不断給餌が授乳期の母豚の飼料摂取量およびその後の生産性に与える影響
  • フダンキュウジ ガ ジュニュウキ ノ ハハ ブタ ノ シリョウ セッシュリョウ オヨビ ソノゴ ノ セイサンセイ ニ アタエル エイキョウ

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<p>Lactating sows require high feed intake in order to produce milk for their piglets and to maintain their body condition. Ad-lib feeder can allow sows to eat feeds as much as they want. The objectives of the present study was to assess the effect of ad-lib feeder to lactating sows on feed intake and subsequent productivity. The present study was conducted on a commercial farm having 350 crossbred sows between Large White and Landrace. Nineteen sows farrowed during Sep. 11 to 13, 2014 were used and randomly assigned to two groups: ad libitum feeding groups (n＝10) and conventional feeding groups (n＝9). Ad libitum feeding was applied during 17 days from study start date (day 4 after farrowing) to study end date (day 20 after farrowing). Piglet weight at weaning and weaning-to-first-mating interval was used as production performance. Total amount of feed intake during 17 days of the study period (±SEM) was 105.0±4.8 kg, and ad libitum feeding group tended to have higher amount than conventional feeding group (111.5±7.6 vs. 97.9±4.8 kg;P＝0.16). Statistical power of this analysis was 0.235. Ad libitum feeding group had higher piglet weight at weaning (9.1±0.1 kg vs. 7.8±0.1 kg;P<0.05) and shorter weaning-to-first-mating interval (4.8±0.1 vs. 5.4±0.2 days;P<0.05) than conventional feeding group. The present study indicated that ad-lib feeder can increase feed intake of lactating sows and subsequently increase production performance.</p>

Journal

  • Nihon Yoton Gakkaishi

    Nihon Yoton Gakkaishi 55 (2), 31-36, 2018-06-26

    The Japanese Society of Swine Science

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