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No.11 (1964/12) >

 
Title :養豚飼料の経済性について
Title alternative :Studies on the efficiency of gains made by pigs.
Authors :松田, 祐一
宮城, 常夫
渡嘉敷, 綏宝
Authors alternative :Matsuda, Yuichi
Miyagi, Tsuneo
Tokashiki, Suiho
Issue Date :Dec-1964
Abstract :沖縄で,養豚飼料として,多く用いられている甘藷の代りに,入手容易な,購入飼料を用いて,肉豚を飼育し,その発育,飼料消費量,飼料要求率,肉量,肉質について調査したが,その結果は次のようであった。1. 日本の豚産肉能力検定の基準によって,飼料を配合,給与した標準区は,仔豚が,22kgから91kgに達するまでに133日を要し(生後日令214日),飼料要求率は4.03であった。2. 20%増飼区は,同重量の増体に112日を要し(生後日令193日),飼料要求率は3.96であった。すなわち,標準区,20%増飼区とも,飼料要求率は約4で,差は認められなかったが,20%増飼区は,飼育期間を20日間短縮することができた。3. 温と体重と枝肉量は,20%増飼区が標準区よりも,僅かに高値を示したが,赤肉の畳,およびロースの太さなどは,標準区が高値を示した。
In Okinawa, the sweet potato has been used as the only energy feed for swine production a long while, because it has been one of the main crops and produced in a large amount. But recently the production decreased remarkably on the contrary to the expansion of sugar cane production. Consequently we can not depend upon the sweet potato as feed for swine production. The studies have been conducted to know the efficiency of gains made by pigs and the quality of the carcass produced, using corn, wheat bran and rice bran instead of sweet potatoes, and to obtain further information on the effect of different levels of feeds intake. In this study 8 pigs of cross breds between Landrace and Chester White were used dividing into 2 lots with the same number. Lot 1-feed was restricted in accordance with the feeding standard in progeny test of meat producing in Japan. Lot 2-feed was added 20% to the lot 1. The records were as follows. 1. Feed per 1 kilogram of gain was 4.0 kilogram in each lot. 2. Pigs in lot 1 took 133 days to gain 70 kilograms (from 22 kilograms to 92 kilograms) of body weight. The above results show that there were no difference between lot 1 and lot 2 in feed conversion, but pigs in lot 2 shortened 20 days to reach market weight comparing with those in lot 1. 4. Dressed carcass percentage was 75.7% in lot 2 and 73.0% in lot 1, showing a little higher level in lot 2. But the weight of the loins in lot 1 was a little heavier than those of lot 2.
Type Local :紀要論文
ISSN :0485-7828
Publisher :琉球大学農家政工学部
URI :http://hdl.handle.net/20.500.12000/19209
Citation :琉球大学農家政工学部学術報告 = The science bulletin of the Division of Agriculture, Home Economics & Engineering, University of the Ryukyus no.11 p.36 -43
Appears in Collections:No.11 (1964/12)

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