Zhang Pan, Cao Meng, Li Jian, Lin Yan, Fang Zhengfeng, Che Lianqiang, Feng Bin, Zhuo Yong, Wang Jianping, Wu De, Xu Shengyu
Key Laboratory of Animal Disease-Resistant Nutrition, Ministry of Education; Key Laboratory of Animal Disease-Resistant Nutrition and Feed, Ministry of Agriculture and Rural Affairs; Key Laboratory of Animal Disease-resistant Nutrition, Sichuan Province; Animal Nutrition Institute, Sichuan Agricultural University, Chengdu 611130, China.
Animals (Basel). 2019 May 30;9(6):297. doi: 10.3390/ani9060297.
This study was conducted to evaluate the effects of sweet potato vine on the onset of puberty and the follicular development in the ovaries of Chinese Meishan gilts. A total of 20 Meishan gilts (initial body weight at 30 ± 0.18 kg) were randomly fed a control (CON) or sweet potato vine (SPV) supplemented diet until 19 days following the third estrous. Sweet potato vine was instead of part of basal diet with the same amount of energy and protein in the sweet potato vine group. The results indicate that gilts fed with sweet potato vine reached puberty 9.4 days later. The development of ovaries was enhanced by sweet potato vine supplementation, characterized by an increase ( < 0.05) in the relative weight of the ovaries and the number of large follicles (>5 mm). Sweet potato vine supplementation increased ( < 0.05) the total superoxide dismutase (T-SOD) and reduced ( < 0.05) the concentration of malondialdehyde (MDA) in the serum of the gilts. Also, the expression of superoxide dismutase-1 (SOD1) and luteinizing hormone receptor (LHR) mRNA in the granulosa cells from the large follicle (>5 mm) of gilts in the SPV group were increased ( < 0.05) as compared with the CON group. These results indicate that gilts fed with sweet potato vine exhibited delayed puberty as well as improved follicular development, which may contribute to the reproductive performance of Chinese Meishan gilts.
本研究旨在评估红薯藤对中国梅山母猪青春期启动及卵巢卵泡发育的影响。选取20头梅山母猪（初始体重30±0.18千克），随机分为对照组（CON）和添加红薯藤（SPV）组，饲喂至第三次发情后19天。红薯藤组用等量能量和蛋白质的红薯藤替代部分基础日粮。结果表明，饲喂红薯藤的母猪青春期启动延迟9.4天。添加红薯藤促进了卵巢发育，表现为卵巢相对重量和大卵泡（>5毫米）数量增加（P<0.05）。添加红薯藤提高了（P<0.05）母猪血清总超氧化物歧化酶（T-SOD）水平，降低了（P<0.05）丙二醛（MDA）浓度。此外，与CON组相比，SPV组母猪大卵泡（>5毫米）颗粒细胞中超氧化物歧化酶-1（SOD1）和促黄体生成素受体（LHR）mRNA表达增加（P<0.05）。这些结果表明，饲喂红薯藤的母猪青春期延迟，但卵泡发育改善，这可能有助于提高中国梅山母猪的繁殖性能。
