• KOREAN JOURNAL OF CROP SCIENCE
• /
• v.33 no.1
• /
• pp.48-53
• /
• 1988

Pearl millet has been detected as a promising new forage crop of excellent quality and productivity since 1985. Its green fodder yields were 10.7 to 12.8 tons per hectare in average of 26 accessions in Suwon, 1985. The yield level was much higher than those of Italian and pro so millets and com. Com was better than Italian and proso millets, and proso millet was better than Italian millet for a green fodder crop. Suwon 1 pearl millet hybrid was the best of the 13 hybrids examined in Suwon, 1986 being 149 tons per hectare of three times cut green fodder yields. The pearl millet hybrid was higher in green fodder yield than com and sorghum/sudan grass hybrids. Leaf area index was 32.4 for the three times cut pearl millet, while 5.8 for the one time cut corn, and 20.8 for the three times cut sorghum/sudan grass. Crude protein content was 16.3 percent for pearl millet being six to five percent higher than corn and sorghum/sudan grass, 11.8 percent for the one time cut at maturity and 16.1 percent for four times cut being higher than corn and sorghum/sudan grass. Crude fat content was 3. percent for pear 1 millet grain being some what higher than corn and sorghum/sudan grass and 1.3-1.4 percent for green fodder crop. Crude fiber content in grain was 1.9 percent for pearl millet 2.6 percent for corn, and 4.3 percent for sorghum/sudan grass. Crude fiber content in pearl millet plant was 24.4 to 26.8 percent, Crude ash content was 2.4 percent in grain and 10.8 to 11.6 percent in the plants of pearl millet hybrid. In vitro digestibility of grain was 93.7 percent for pearl millet, 95.4 percent for corn, and 55.8 percent for sorghum/sudan grass. The digestibility of whole plant was 57.6 to 63.4 percent for pearl millet, 46.3 percent for corn, and 47.3 to 57.6 percent for sorghum/sudan grass. Heavier nitrogen fertilizer applications increased green fodder yields, protein content and digestibility, but reduced fat and ash content of pearl millet inbred line T 186.

• Korean Journal of Agricultural Science
• /
• v.42 no.2
• /
• pp.141-149
• /
• 2015

The data of Duroc swine species that were born from 2000 to 2014 excluding missing ones collected by Korea National Institute of Animal Science were used in the present study. After removing missing data we used 9756 of productions data and 1728 of reproductive reference of breeding research to study the level of inbreeding and to investigate the impact on the reproductive traits, production traits. The correlation of reproductive traits and inbreeding coefficient are -0.07, -0.08 for total number pigs born, number of pigs born alive respectively and birth weight per litter is -0.10, number of pigs born alive per litter to 21days is -0.06 and body weight per litter to 21days is -0.09. The correlation coefficients of the inbreeding coefficients of reproductive traits are shown within 10% with negative correlation (P < 0.05). Days of 90kg and Backfat in the correlation coefficient and inbreeding coefficient production traits were not observed significant correlations, Average daily gain was investigated by the positive correlation of 0.05. According to the above results, the inbreeding level gave a negative effect on the improvement of the breed traits, investigating a relatively high compared to a negative effect on other traits. But overall correlation degree is less than 10% was observed. This inbreeding coefficient has not been clearly observed due to degeneration of the average inbreeding coefficients of these generations was maintained within 10% of the population. The scale of the experimental group was about 150 degree pig husbandry is very small compared to the advanced countries. However, the level of inbreeding in the population group with the appropriate mating combinations is maintained below 10% of population is thought to be small and can minimize the effects of inbreeding degeneration. further testing utilizing this selection is constantly considered to be necessary.