The genetic parameters of main reproductive traits for the new Yorkshire line with high prolificacy were evaluated by multiple animal model DFREML The re- suits showed that the heritability evaluates of the total numb...The genetic parameters of main reproductive traits for the new Yorkshire line with high prolificacy were evaluated by multiple animal model DFREML The re- suits showed that the heritability evaluates of the total number of born （TNB）, alive number of born （ANB）, litter weigh at birth （LWB） and litter weight at age of 21 days were 0.10, 0.15, 0.09 and 0.14, respectively. The genetic correlations between these traits, for example, the correlations between TNB/ANB, NB/LWB, TNB/LW21, ANB/LWB, ANB/LW21 and LWB/LW21 were 0.87, 0.74, 0.43, 0.69, 0.59 and 0.51, respectively.展开更多
Six tea plantations with different soil-forming parent materials, the same tea variety and tea age and similar landforms and management were selected to conduct a systematic study on the relationship between soil prop...Six tea plantations with different soil-forming parent materials, the same tea variety and tea age and similar landforms and management were selected to conduct a systematic study on the relationship between soil properties and tea quality. The results showed that the quality of tea grown on the soils derived from granites, arenaceous shales, argillaceous sandstones, was superior; those on the soils derived from limestones,dolomites, Quaternary red clays, were inferior. Further study showed that sandy soils were beneficial to improving amino acid content of tea, and clayey soils made it decrease; high content of bases might decrease the contents of tea polypenols, caffeine, water extracts, but promote the content of amino acids; available phosphorous was significantly positively correlated with water extracts, but significantly negatively correlated with carbine; slowly available potassium was positively correlated with amino acid content. Soil parent materials should be regarded as an important factor in evaluating the adaptability of tea to soils.展开更多
In this study it is aimed to investigate live weight and carcass traits of Anatolian Grey and Anatolian Grey x Brown Swiss crossbred in raised Edirne and Kesan. In this study the authors used 51 Anatolian Grey bulls, ...In this study it is aimed to investigate live weight and carcass traits of Anatolian Grey and Anatolian Grey x Brown Swiss crossbred in raised Edirne and Kesan. In this study the authors used 51 Anatolian Grey bulls, 22 Anatolian Grey heifers and 63 Anatolian Grey x Brown Swiss crossbred bulls. 136 animals in 2-3 years old were used present study. The live weights were found 446.375 ± 20.87 and 508.29 ± 11.88 kg for Anatolian Grey bull and Anatolian Grey x Brown Swiss crossbred bull respectively. Carcass percentage were found 60.57%, 46.84%, 56.87% and the correlation coefficient were calculated between live weight and carcass percentage 0.98, 0.80 and 0.94 for Anatolian Grey bulls, Anatolian Grey heifers and Anatolian Grey x Brown Swiss crossbred bulls, respectively.展开更多
基金Supported by National Science and Technology Support Plan during the Eleventh Five-year Plan(2006BAD01A08-02)Hubei Agricultural Innovation Program(2007-620-004-003)Special Fund for Modern Pig Production Technology Construction(NYCYTX-009)~~
文摘The genetic parameters of main reproductive traits for the new Yorkshire line with high prolificacy were evaluated by multiple animal model DFREML The re- suits showed that the heritability evaluates of the total number of born （TNB）, alive number of born （ANB）, litter weigh at birth （LWB） and litter weight at age of 21 days were 0.10, 0.15, 0.09 and 0.14, respectively. The genetic correlations between these traits, for example, the correlations between TNB/ANB, NB/LWB, TNB/LW21, ANB/LWB, ANB/LW21 and LWB/LW21 were 0.87, 0.74, 0.43, 0.69, 0.59 and 0.51, respectively.
文摘Six tea plantations with different soil-forming parent materials, the same tea variety and tea age and similar landforms and management were selected to conduct a systematic study on the relationship between soil properties and tea quality. The results showed that the quality of tea grown on the soils derived from granites, arenaceous shales, argillaceous sandstones, was superior; those on the soils derived from limestones,dolomites, Quaternary red clays, were inferior. Further study showed that sandy soils were beneficial to improving amino acid content of tea, and clayey soils made it decrease; high content of bases might decrease the contents of tea polypenols, caffeine, water extracts, but promote the content of amino acids; available phosphorous was significantly positively correlated with water extracts, but significantly negatively correlated with carbine; slowly available potassium was positively correlated with amino acid content. Soil parent materials should be regarded as an important factor in evaluating the adaptability of tea to soils.
文摘In this study it is aimed to investigate live weight and carcass traits of Anatolian Grey and Anatolian Grey x Brown Swiss crossbred in raised Edirne and Kesan. In this study the authors used 51 Anatolian Grey bulls, 22 Anatolian Grey heifers and 63 Anatolian Grey x Brown Swiss crossbred bulls. 136 animals in 2-3 years old were used present study. The live weights were found 446.375 ± 20.87 and 508.29 ± 11.88 kg for Anatolian Grey bull and Anatolian Grey x Brown Swiss crossbred bull respectively. Carcass percentage were found 60.57%, 46.84%, 56.87% and the correlation coefficient were calculated between live weight and carcass percentage 0.98, 0.80 and 0.94 for Anatolian Grey bulls, Anatolian Grey heifers and Anatolian Grey x Brown Swiss crossbred bulls, respectively.
