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Articles by Huajia Shan
Total Records ( 4 ) for Huajia Shan
  Huajia Shan , Fuyu Yang , Wenxu Zhang , Ligang Qin and He Zhou
  Two experiments were conducted to investigate the problems of severe nutrient loss of traditional alfalfa hay processing methods and storage difficulties in moist or rainy conditions. Alfalfa hay baled at two percentages of moisture (18 and 27%), respectively were taken as controls (CKL, low-moisture control; CKH, high-moisture control). Bale treatments were sampled before storage and at 5, 10, 25 and 60 days postbaling. Nutrient content and the curve of nutrient change during 60 days storage were analyzed to study the effect of compound additives on the quality and organic-matter digestibility of alfalfa hay baled at high-moisture content. The results showed that the nutrient-component proportion of conventional low-moisture alfalfa hay changed inconspicuously during the 60 days storage process and high-moisture treatment combinations that favored extended microbial activity continued to decrease the forage quality (particularly, increased neutral-detergent fiber and acid-detergent insoluble nitrogen). Nutrient content and in vitro digestibility of high-moisture alfalfa hay processed with compound additives improved to varying degrees after 60 days preservation. Its water content was 1.62% points less than that of the high-moisture control (CKH). Crude protein and soluble carbohydrates increased by 0.42 and 6.75 g kg-1, respectively while non-protein nitrogen and crude fiber decreased by 0.39 and 3.23% g kg-1. At the same time, in vitro dry matter digestibility and in vitro crude protein digestibility greatly increased by 4.18 and 2.74%.
  Ligang Qin , Qingfang Xu , Huajia Shan , Guohui Yu , Chunsheng Bai , Yu Zhu and Kun Wang
  The nitro-compound, nutritive material and silages fermentation of corn were studied under different nitrogen fertilizer application or temperature, the results showed that corn had good fermentation quality under different nitrogen fertilizer application or temperature. The DM (Dry Matter), CP (Crude Protein) contents of corn were increased significantly at the 0.05 level with the increased of fertilizer nitrogen amount however, the WSC (Water Soluble Carbohydrate) content decreased but these were eliminated by low temperature treatment. And the nitrogen content increased significantly at the 0.05 level under different nitrogen fertilizer application or temperature. The nitrate content reduced post-ensilaged and the nitrite content improved significantly, respectively. The enzymatic activities of NR (Nitrate Reductase) and PM H+-ATPase (Plasma Membrane H+-ATPase) were improved significantly by the use of nitrogen fertilizer treatment although, they were reduced under low temperature. The nitrogen contents in the soil decreased after planted. However, it was improved under different nitrogen fertilizer application or temperature, the coefficient of soil nitrogen utilization of corn were not changed significantly even the nitrogen content improved under low temperature treatment.
  Ling Gao and Huajia Shan
  Conjugated Linoleic Acid (CLA) is a mixture of structure and geometric isomers of C18:2 fatty acids. Currently, it has been widespread concerned for the special physiological functions. This review elucidated the significance of the studies in the effects of dietary CLA on the growth performance, body composition, lipid contents and fatty acid composition of fish. Sorting earlier literatures, researchers found that dietary CLA can affect the growth performance and body composition of fish while the differences between different fish species are significant. Earlier studies in a number of species show that dietary CLA may have effects on the growth rate of fish but the results are diverging. This difference is mainly because of the mixed amount and the isomer composition ratio of CLA. There are evidences demonstrated that the impacts of CLA on fish’s growth were closely related to the isomers of CLA. Dietary CLA (cis-9, trans-11 and trans-10, cis-12 isomers) inclusion resulted in significant increases of the contents of Saturated Fatty Acids (SFA) and Polyunsaturated Fatty Acids (PUFA) (p<0.05) and decreased Monounsaturated Fatty Acid (MUFA) content (p<0.05) in both muscle and liver tissues.
  Wenxu Zhang , Shehui Fang , Huajia Shan , Ying Li , Laigui Shang , Mingya Wang and Peisheng Mao
  Alfalfa (Medicago sativa L.) is one of the most important forage legumes worldwide. Breeding to improve seed yield will enhance the value of alfalfa. Using three alfalfa cultivars (M. sativa L. Gannong No. 6, M. sativa L. Gannong No. 1 and M. sativa L. Defl) a field study was conducted from 2004 to 2007 to evaluate the effects of an inflorescence mutant (Gannong No. 6) on seed yield. The hypothesis was that a mutant with a long inflorescence would improve seed yield by improving seed yield components such as the number of flowers, pods and seeds per inflorescence and 1,000 seed weight. Each of these factors were investigated to determine the relationship between inflorescence length and seed yield components and to identify the key factors involved in improving seed yield. The results were statistically analyzed and yielded four main conclusions. Firstly, the differences among cultivars had significant effects on inflorescence length and the number of flowers, pods and seeds per inflorescence. Secondly, in Gannong No. 6, the average number of flowers, pods and seeds per inflorescence was 75.40, 30.88 and 76.23, respectively with an average inflorescence length of 12.46 cm. Thirdly, in Gannong No. 6, the inflorescence length significantly affected some yield components such as the number of flowers, pods and seeds per inflorescence. Finally, Gannong No. 6 possessed high seed yield because of an increased inflorescence length.
 
 
 
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