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http://dx.doi.org/10.5333/KGFS.2019.39.2.61

Effect of Supplementary Feeding Levels on Productivity and Grazing Intensity in Grazing Elk stags(Cervus canadensis)  

Lee, Jinwook (Animal Genetic Resources Research Center, National Institute of Animal Science, RDA)
Lee, Sang Hoon (Animal Genetic Resources Research Center, National Institute of Animal Science, RDA)
Lee, Sung Soo (Animal Genetic Resources Research Center, National Institute of Animal Science, RDA)
Jeon, Dayeon (Animal Genetic Resources Research Center, National Institute of Animal Science, RDA)
Kim, Sung Woo (Animal Genetic Resources Research Center, National Institute of Animal Science, RDA)
Yun, Yeong Sik (Institute of Livestock Environmental Management)
Kim, Sang Woo (International Agricultural Development and Cooperation Center, Chonbuk National University)
Park, Hyung Soo (Animal Genetic Resources Research Center, National Institute of Animal Science, RDA)
Kim, Kwan Woo (Animal Genetic Resources Research Center, National Institute of Animal Science, RDA)
Publication Information
Journal of The Korean Society of Grassland and Forage Science / v.39, no.2, 2019 , pp. 61-67 More about this Journal
Abstract
This study was conducted to investigate the effect of supplementary feeding levels on livestck and forage productivity and grazing intensity in Elk stags (Cervus canadensis). A fifteen 2-year-old Elk stags about 195 kg were randomly assigned to one of three dietary treatments (five animals per treatment). The dietary treatments consisted of a feeding concentrate of 1.0% of body weight (T1), 1.5% of body weight (T2) and 2.0% of body weight. Total dry matter intake (TDMI) was increased with increased with an increasing supplementary feeding levels. Average daily gain (ADG) were significantly increased with an increasing supplementary feeding levels (p<0.05) and reached a maximum on July and was lower in spring than autumn. The velvet antler production was no differences among treatment groups. Forage productivity of pasture and crude protein content were highest on May and decreased thereafter, however, crude fiber content was the reversed. The grazing intensity of Elk stags was increased in spring (38 to 59 head per ha) than summer and autumn (13 to 32 head per ha). The average grazing intensity of Elk stags ranged from 21 to 34 head per ha, which is affected by supplementary feeding levels. This result suggests that feeding supplementary diet at 1.5 % of body weight was needed to maintain the stable wight gain in antler growing periods and control the proper grazing intensity of Elk deer stags.
Keywords
Grazing; Supplementary feeding; Feed intake; Weight gain; Velvet antler production;
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