豚の胃潰瘍に関する研究(第3報) : 第1次飼養試験 : 飼料の組成や粒度が本病の発生に及ぼす影響

飼料の組成,粒度,加工方法および給餌方法の異なる7つの試験区を設け, 飼料と前胃部病変との関連性を検討した.
飼料の組成は胃病変の発生に著しい関連性が認められた･すなわち,飼料中の粗繊維含有量を多くすると胃病変の発生率が低下し, 粗繊維がその大部分を占めている残飯では病変は全く発生しなかった.また粗繊維の添加は胃の発達を促進した.
飼料の粒度も胃病変の発生に著しい関連が認められ,とうもろこしの粒度を1mm 以下に粉砕すると病変の発生が著しく高まり, 3.5mm 以下の粗大な粒子に挽き割ったり,あるいは圧扁すると病変の発生は著しく低下した･
飼料のペレット化は胃病変の程度を僅かばかり増悪し, 一方,水飼いはこれをいくらか軽減するのに役立った.
近年,わが国の豚に胃潰瘍が多発している原因は, 微粉砕とうもろこし配合飼料の給与にあることが実験的に証明された.

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Abstract

内容記述

To study the effect of a diet upon the development of esophagogastric ulcer in swine, an experiment was carried out with diets varying in composition, containing grains of different sizes, and given in various manners.
Seventy crossbred pigs about 3 months old were divided equally into seven groups, which were assigned to the seven experimental diets, respectively. All of them were fed twice a day and given free access to drinking water. Each pig was slaughtered 85 days after the beginning of the experiment and examined for pathological changes in the stomach.
The following diets were used for the experiment.
Group 1: Fine cracked corns - cracked corn grains were less than 1mm in diameter.
Group 2: Coarse cracked corns - cracked corn grains were less than 3.5 mm in diameter.
Group 3: Pelleted corns - pellets were prepared from the same material as the fine cracked corns.
Group 4: Fluid mashed corns - mash was prepared from 1 part of the same material as the fine cracked corns and 3 parts of water.
Group 5: Flaked and gelatinized corns.
The five diets mentioned above had the same composition as the Zen-Noh brand formula diet.
Group 6: Crude fiber added corns - alfalfa leaf meal was added to the same material as the fine cracked corns at the rate of 13 per cent.
Group 7: leftover food - refuse animal and vegitable matter from the kitchen.
Gastric lesions were observed in all the pigs fed the fine cracked corns containing minute particles of corn, the pelleted corns consisting of same material as the fine cracked corns, and the fluid mashed corns prepared to make the stomach dilate by enlarging the volume of the diet with water.
No gastric lesions were found in five of nine pigs fed the crude fiber added corns (one of the ten pigs of this group was discarded from the experiment, because it was affected with SEP). This result indicates that the alfalfa leaf meal had a considerable effect for the prevention of gastric changes.
The leftover food diet was mainly composed of such vegitable matter as roots and fruits and such hardly digestible stuffs as chicken and fish bones. The pigs fed this diet presented no gastric changes at all and seemed to have a stronger stomach than the pigs fed any other diet.
Gastric lesion were detected from only one of the pigs fed the coarse cracked corns and only one of the pigs fed the flaked and gelatinized corns. This result indicates that feeding coarse grains has a marked effect for the prevention of gastric changes.
From these results, it is concluded that the development of gastric lesions is influenced by the size of grain and the contents of crude fibers and other hardly digestible components of the diet.

言語

書誌情報

ja : 宮崎大学農学部研究報告
en : Bulletin of the Faculty of Agriculture, Miyazaki University

巻 22, 号 1, p. 211-219, 発行日 1975-10

出版者

宮崎大学農学部

言語

出版者

Miyazaki University

言語

ISSN

収録物識別子タイプ

ISSN

収録物識別子

05446066

書誌レコードID

収録物識別子タイプ

NCID

収録物識別子

AN00236503

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VoR

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http://purl.org/coar/version/c_970fb48d4fbd8a85

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