ウェットフィーディングが肥育豚の発育, 飼料要求率および枝肉の改善に及ぼす効果  [in Japanese] Effects of Wet/Dry Feeding for Finishing Pigs on Growth, Feed Conversion and Carcass Quality.  [in Japanese]

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Abstract

肥育豚の発育, 飼料要求率, 群のバラツキおよび枝肉に及ぼすウェットフィーディングの効果を解明するために, 259頭の肥育豚を用いて5回の飼養試験を実施した。試験に供した給餌器は, 従来型セルフフィーダー (対照区), A社およびB社製自然落下型ウェットフィーダー (ウェットA区およびB区), C社製飼料切出し型ウェットフィーダー (ウェットC区) の4種類であった。また, ウェット区をプールして1頭口飼養頭数の影響についても検討した。<br>肥育豚の1日平均増体量 (DG) に及ぼす給餌器の影響は, 有意差としては検出されなかったが, ウェット各区が対照区より良好な傾向を示した。この増体改善傾向は去勢雄では認められなかったが, 雌では明瞭であった。飼料要求率はウェット各区が有意に良好で, 肥育全期間をとおして6~9%改善さ, れた。また体重の群内バラツキの推移では, 増体にともない対照区よりもバラツキは小さくなる傾向が認められた。ウェットフィーダー1頭口飼養頭数による影響は, DGにおいて有意の効果が認められ, 1頭口飼養頭数が増加するに従いDGは低下した。枝肉の背脂肪厚, 腹脂肪厚には, 有意ではないものの, ウェット各区は対照区よりも, 去勢雄では薄く, 雌では厚めとなる傾向が認められた。

We conducted five rearing experiments with 259 finishing pigs to determine the effects of wet/dry feeding on the growth, feed conversion, variations among the herds, and the quality of carcasses. Effects of feeder types were tested across four sections with different feeders: Conventional ad lib hoppers (control section), ledge type wet/dry feeders of Company A and Company B (wet/dry feeder sections A and B), and nose operated flap type wet/dry feeder of Company C (wet/dry feeder section C). Effects of the number of pigs per single feeding space were also examined by pooling the wet/dry feeder sections.<br>Effects of the feeder type on the average daily gain (DG) of the finishing pigs were not significantly different across the sections, although the superior results were obtained for the wet/dry feeder sections compared with the control section. While the improvement of DG was not observed in the castrated hogs, it was clearly observed in the females. As for the feed conversion, significant effects were obtained in the wet/dry feeder sections, showing the improvement of 6-9% throughout the period of the experiment. As for the change of the variations in weight among the herds, a tendency was observed that in the wet/dry feeder sections, the variations in the weight became small, compared to the variations in the control section, as the pigs gained weight.<br>The number of pigs per single feeding space in the wet/dry feeder sections had significant effects on the DG. The DG decreased as the number of pigs per single feeding space in the wet/dry feeder sections was increased.<br>The back and belly fat of the carcasses were thinner in the castrated hogs but thicker in the females in wet/dry feeder sections compared to those in the control section, although these differences were not statistically significant.

Journal

  • Nihon Yoton Gakkaishi

    Nihon Yoton Gakkaishi 33(1), 5-13, 1996-03-11

    The Japanese Society of Swine Science

References:  16

Cited by:  1

Codes

  • NII Article ID (NAID)
    10008441218
  • NII NACSIS-CAT ID (NCID)
    AN10202971
  • Text Lang
    JPN
  • Article Type
    Journal Article
  • ISSN
    0913882X
  • Data Source
    CJP  CJPref  J-STAGE  JASI 
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