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http://dx.doi.org/10.5333/KGFS.2021.41.4.250

Effects of Feeding Systems on Feed Intake, Weight Gain and Fawn Performance in Elk Doe(Cervus canadensis)  

Lee, Jinwook (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)
Lee, Sang-Hoon (Grassland and Forage Division, National Institute of Animal Science, RDA)
Choi, Bong-Hwan (Animal Genetic Resources Research Center, National Institute of Animal Science, RDA)
Jeon, Dayeon (R&D Coordination Division, RDA)
Kim, Chan-Lan (Animal Genetic Resources Research Center, National Institute of Animal Science, RDA)
Kim, Dong-Kyo (Animal Genetic Resources Research Center, National Institute of Animal Science, RDA)
Lee, Eun-Do (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.41, no.4, 2021 , pp. 250-258 More about this Journal
Abstract
This study was conducted to investigate the effect of feeding systems on feed intake, weight gain, and fawn performance (Cervus canadensis) and estimation of grazing intensity in Elk doe at pasture. A sixteen Elk doe about 236.2 kg were randomly assigned to two feeding treatments. The treatment consisted of a barn feeding system (BF) and grazing at pasture (GR), and pasture was mainly composed of tall fescue, orchard grass, and Kentucky bluegrass. The moisture content of pasture was 19.51~22.61%, which was similar during experimental periods. The crude protein content was significantly higher from June to July (p<0.05). The contents of neutral detergent fiber and acid detergent fiber ranged 53.65~60.18%, and 26.08~29.10%, respectively. There were no significant differences between feeding systems on supplementary feed intake, but the roughage and total dry matter intake showed significant differences between treatment groups (p<0.05), except for May. In August, roughage intake was dramatically decreased in the GR group due to summer environmental changes. On the other hand, the higher intake of roughage in September might be related to nutrient intake for mammals. There was no difference in body weight between treatment groups, but the fawn performance was significantly higher in the GR group (p<0.05). These results might be suggested that grazing elk doe might positively affect fawn growth. However, it is considered that BF might increase the deer weaning rate during the parturition period, since the lower weaning rate in the GR group compared to the BF group. The grazing intensity of Elk doe was increased from May to July and decreased in August, which was influenced by pasture productivity. The average grazing intensity of Elk doe was found to be 15 heads/ha, which might be controlled by supplementary feeding. Further studies needed that mixed sowing methods and fertilization management in old grazing pastures for improved pasture productivity.
Keywords
Grazing; Barn feeding; Elk doe; Grazing intensity; Fawn performance;
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