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http://dx.doi.org/10.5187/JAST.2006.48.2.219

Effect of Pine Silage Feeding on Nutrient Digestibility, Feed Conversion and Carcass Traits of Korean Native Cattle  

오영균 (National Livestock Research Institute)
정찬성 (National Livestock Research Institute)
이상철 (Ministry of Agriculture and Forest)
김경훈 (National Livestock Research Institute)
최창원 (National Livestock Research Institute)
강수원 (National Livestock Research Institute)
문여황 (Jinju National University)
Publication Information
Journal of Animal Science and Technology / v.48, no.2, 2006 , pp. 219-226 More about this Journal
Abstract
The wastes (the needle leaves and branches) produced from thinning the forest were fermented under an anaerobic condition (pine silage) to utilize as a forage source of ruminants. An in situ trial was conducted with two ruminally fistulated Korean native cows by 4 replicates (2 bags per cow), and in vivo digestibility of pine silage was estimated with five Korean native steers by 5 replicates in incomplete double turn-over design. In order to investigate feed efficiency and carcass traits, forty eight Korean native bulls were assigned to four treatments (0%, 25%, 50%, 75% of pine silage) with a completely randomized design in 12 pens accommodating 4 animals per pen. The amounts of concentrate and roughage allowed to experimental animals were in the range of 2.5% and 0.6% of body weight, respectively. Animals had freely accessed to mineral block and water in stanchion barn.An in situ crude protein digestibility of the roughage sources when suspended for 48 hrs in the rumen was higher for feeding the pine silage than the rice straw, whereas NDF digestibility was vice versa. No differences between the treatments were observed in in vivo digestibilities of dry matter, crude protein and NDF. Daily body weight gain was significantly (P<0.01) higher for the pine silage substitutions compared with the rice straw feeding except for the 25% silage feeding. The pine silage feeding did not affect feed efficiency.In carcass traits, marbling score tended to be higher for the 50% pine silage treatment than the other treatments while back fat thickness tended to be the thinnest for the rice straw feeding. From these results, it may be recommended to substitute pine silage, as a forage source, for rice straw by 50 percent.
Keywords
The waste of thinning forest; Pine silage; In situ; In vivo; Carcass traits;
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