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Articles by Wenxu Zhang
Total Records ( 2 ) for Wenxu Zhang
  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%.
  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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