The Japanese Journal of Swine Husbandry Research
Online ISSN : 2186-2567
Print ISSN : 0388-8460
ISSN-L : 0388-8460
STUDIES ON THE EFECTS OF FEEDING OF ALFALFA, BEET PULP AND POTATO PULP TO PIGS UPON THE DIGESTIBITY AND ABSORBABILITY OF FIBROUS COMPONENTS IN THEIR DIGESTIVE TRACTS
Nobuyuki SUGIMOTO
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JOURNAL FREE ACCESS

1985 Volume 22 Issue 3 Pages 158-162

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Abstract

The present experiment was conducted to examine the variations in the fibrous components of feedstuffs for pigs containing alfalfa, beet-pulp and potato pulp in digestive tracts and their digestibility at various parts of the tracts using organs freshly collected from slaughter.
Eight Landrace barrows were equally divided into 4 groups of 2 which were given 4 different feedstuffs with the following compositions and with chromium trioxide as an indicator. (A) a diet alone, which is generally used for the performance test on meat production, (B) the diet A 80% plus 20% alfalfa, (C) the diet A 70% plus 30% beet pulp, and (D) the diet A 70% plus 30% popato pulp. The digestibility was assayed according to chromium trioxide method. Digestibilities of hemicellulose and cellulose of these feedstuffs in various regions of the digestive tracts were determined of digesta collected from stomach, ileum, caecum, colon, and rectum upon slaughter following feeding for 14 days or more. On the day of the slaughter, half of the daily feeding of these feed-stuffs was each given at 8a.m. and the animals were slaughtered 2.5 or 3 hours after the feeding to collect the digesta. The following findings were obtained.
Digestibilities of hemicellulose and cellulose of these feedstuffs increased as they moved into lower digestive tracts, and those of diets C and D were relatively higher than those of diets A and B throughout the digestive tracts. This finding suggested that the digestibilities of hemicellulose and cellulose in beet pulp and potato pulp were much higher than those of alfalfa and formula feed. Hemicellulose of beet pulp which was added to diet C could be digested very smoothly in caecum and the digestive tracts beyond that, while that of potato pulp could be considerably digested in the anterior to the terminal of ileum. Cellulose used in the diet C could be smoothly digested in caecum and colon, while that of beet pulp could be considerably digested in caecum. It was therefore realized that cellulose of potato pulp can be well digested in caecum and that of beet pulp can be digested in caecum and colon.

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© The Japanese Society of Swine Science
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