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- 저자 : Hua Dengke (검색결과 2 건)
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Hua, Dengke,Xue, Fuguang,Xin, Hairui,Zhao, Yiguang,Wang, Yue,Xiong, Benhai Asian Australasian Association of Animal Productio 2021 Animal Bioscience Vol.34 No.5
Objective: Light is a significant component of housing environment in commercial poultry industry. This study was conducted to investigate whether Pekin ducks perform better under monochromatic lights than under white light with respect to their growth performance, carcass quality, eyeball development, oxidation resistance, and cecal bacterial communities. Methods: A total of 320 one-day-old male Pekin ducklings were randomly distributed into five rooms with different light treatments, white, red, yellow, green, and blue light. Each room consisted of 4 replicated pens with 16 ducklings per pen. Results: Blue light significantly decreased fat deposition by decreasing abdominal fat. Long wavelength light, such as red, green, and yellow light, considerably increased the back-to-front eyeball diameter and the red light potentially enlarged the side-to-side eyeball diameter. Besides, the blue light had adverse effects on the oxidation resistance status in terms of increasing the product malonaldehyde of lipid oxidation and decreasing the plasma concentration of total superoxide dismutase. The phyla of Firmicutes had the greatest abundance in the green and blue treatments, while Bacteroidetes in blue treatment was the least. The genus of Faecalibacterium was significantly lower under the red light. Conclusion: The high risk of cecal health status and decreased anti-oxidation activity were observed under blue light. Red, yellow, and green light might increase the risk of oversized eyeball and cecal illness. Therefore, monochromatic lights compared to white light did not show advantages on the performance of housing ducks, it turns out that the white light is the best light condition for grow-out ducks.
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He Zhangzhang,Gui Lianyou,Wang Fulian,Shi Yongfang,Liang Peng,Yang Xuan,Hua Dengke,Du Tainhua 한국응용곤충학회 2020 Journal of Asia-Pacific Entomology Vol.23 No.4
Previous work reveals that newly emerged adult Chinese citrus flies, Bactrocera minax (Enderlein), emerges from the ground in the mosaic-type citrus orchard of the hilly terrain landform dispersed into adjacent forest, and the newly emerged adult flies fed on male inflorescence of the Chinese chestnut, Castanea mollissima Blume (Fagaceae). The potential impact of male inflorescence of C. mollissima on the longevity, and survival of adult females and males, the ovarian development of adult females, and the abdominal index, ovarian index, and egg length of the fourth ovarian grade of living females, as well as the flowering process of the male inflorescence of the Chinese chestnut, were studied with the three methods of rearing (normal rearing, hungry rearing, and bagging rearing). For all three rearing treatments, the longevity of all adults could live up to 38 days, there were similar time dynamics for the average survival of female and male adult flies. Of the total females, 32.1%–100% females with bagging rearing could attain the fourth ovarian grade like those in rearing and hunger rearing. The abdominal index, ovarian index, and egg length of the fourth ovarian grade of 27–39 days’ old living females with bagging rearing (it corresponds to the late flower withering period), were 75.1%, 49.8% and 89.6% of those with normal rearing, and 73.2%, 60.6% and 90.8% of those with hungry rearing, respectively. The male inflorescence of C. mollissima can satisfy the nutritional requirements of adult B. minax, enabling their survival and normal reproduction. This study can provide references for development and application of artificial feed and food attractants of adult B. minax.
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