ウェットフィーディングが肥育豚の採食行動および飼槽の利用性に及ぼす影響  [in Japanese] Effects of Wet/Dry Feeding for Finishing Pigs on Eating Behavior and Frequency of Trough Usage  [in Japanese]

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Abstract

ウェットフィーディングにおける飼料と水との同時混合摂取が, 肥育豚の採食行動や飼槽の利用性に及ぼす影響を解明するために, ビデオ録画装置を用いて採食行動の24時間連続調査を行った。<br>1日の総採食時間は, 従来型セルフフィーダーにより給餌し飼槽とは別の場所で分離給水した対照区に比べ, 自然落下型ウェットフィーダーで給餌給水したウェット1区 (W1区), および飼料切出し型ウェットフィーダーで給餌給水したウェット2区 (W2区) では約60%と有意に短縮した。一方, ウェットフィーダーで飼料のみを給与したウェットドライ区 (WD区) では対照区との差は認められなかった。1日の総採食回数には給餌器による有意差は認められなかった。1回平均採食時間は, W1およびW2区では対照区の約50%と有意に短縮したが, WD区では差は認められなかった。採食行動に及ぼすウェットフィーダー1頭口飼養頭数の影響は, 総採食時間および平均採食時間において認められ, 飼養頭数の増加に従いいずれも有意に短縮した。飼槽利用率は, 1頭口15頭飼育では対照区よりも有意に高く, 7.5頭飼育では差が認められず, 5頭飼育では有意に低かった。飼槽空き時間率はW1およびW2区が対照区よりも有意に高く, 特に1頭口5頭飼育では昼間の空き時間が大きかった。<br>本研究の結果から, 本飼養法の適正飼養頭数は1頭口当り8~10頭と推察された。

We investigated, with a 24-hour continuous observation by a video recorder, the effects of intake of the feed-water mixture based on wet/dry feeding on eating behavior of finishing pigs and frequency of trough usage.<br>The total eating time of a day by use of a ledge-type wet/dry feeder (Wet 1 section (W1)) and a nose-operated flap type wet/dry feeder(Wet 2 section (W2)), in which feed and water were supplied in the same trough, was approx. 60% of that by the conventional ad lib hopper and separate water supply (control section). No significant difference was found between the Wet-Dry section (WD), where only feed was supplied by a wet/dry feeder, and the control section. Significant differences in eating frequency of a day were not observed among the types of feeder. The average eating times in the W1 and W2 were significantly reduced to 50% of the control section, while no time difference was shown between the WD and control section. The effect of number of finishing pigs per feeding space of wet/dry feeders was observed on both total and average eating time. They were significantly reduced as the number of pigs per feeding space was increased. Feeding trough usage rate in W1 and W2 was significantly higher than that in the control section when the number of pigs per feeding space was 15, and significantly lower when the number was 5, while it was not significantly different from that in the control section when the number was 7.5. When the trough was not used, the proportion of time was significantly higher in W1 and W2 than that in the control section, especially longer in the daytime when the number of pigs per feeding space was 5.<br>From the aforementioned results, it was estimated that in wet/dry feeding, the reasonable number of finishing pigs per feeding space was 8 to 10.

Journal

  • Nihon Yoton Gakkaishi

    Nihon Yoton Gakkaishi 33(3), 88-96, 1996-09-30

    The Japanese Society of Swine Science

References:  15

Codes

  • NII Article ID (NAID)
    10008441337
  • NII NACSIS-CAT ID (NCID)
    AN10202971
  • Text Lang
    JPN
  • Article Type
    ART
  • ISSN
    0913882X
  • NDL Article ID
    4069052
  • NDL Source Classification
    ZR22(科学技術--農林水産--畜産)
  • NDL Call No.
    Z18-1082
  • Data Source
    CJP  NDL  J-STAGE  JASI 
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