Tropical Grasslands-Forrajes Tropicales最新文献_第9页

Dry matter yields and quality parameters of ten Napier grass (Cenchrus purpureus) genotypes at three locations in western Oromia, Ethiopia 埃塞俄比亚西部奥罗米亚3个地点10种纳皮尔草基因型的干物质产量和品质参数

IF 0.7 4区农林科学

Tropical Grasslands-Forrajes Tropicales Pub Date : 2021-01-30 DOI: 10.17138/TGFT(9)43-51

Abuye Tulu, Mekonnen Diribsa, W. Temesgen

{"title":"Dry matter yields and quality parameters of ten Napier grass (Cenchrus purpureus) genotypes at three locations in western Oromia, Ethiopia","authors":"Abuye Tulu, Mekonnen Diribsa, W. Temesgen","doi":"10.17138/TGFT(9)43-51","DOIUrl":"https://doi.org/10.17138/TGFT(9)43-51","url":null,"abstract":"Ten Napier grass genotypes (accessions) were assessed across 3 locations, Bako, Boneya Boshe and Gute, for forage dry matter (DM) yield, crude protein (CP) concentration, leaf:stem ratio, nutrient composition and digestibility characteristics during 2016 and 2017. The genotypes were evaluated in a randomized complete block design with 3 replications. Mean DM yield was higher for accession ILRI 16804 across all locations followed by ILRI 16801 and ILRI 16800. Leaf:stem ratio, CP concentration and CP and digestible organic matter (OM) yields also varied significantly among genotypes with the highest values obtained for accession ILRI 16804 across all locations, followed by ILRI 16800 and ILRI 16801. Yields of DM, CP and digestible OM and leaf:stem ratio were higher at Boneya Boshe and Gute than at Bako and higher during 2017 than during 2016. The consistently superior performance of ILRI 16804, ILRI 16801 and ILRI 16800 in both years across the 3 sites suggests that these genotypes should be studied further on farms and in differing environments before being recommended for general cultivation in this area. Examining performance with more frequent harvests and feeding studies with livestock would confirm the benefits to be obtained from planting these new accessions.","PeriodicalId":56049,"journal":{"name":"Tropical Grasslands-Forrajes Tropicales","volume":"9 1","pages":"43-51"},"PeriodicalIF":0.7,"publicationDate":"2021-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80840018","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Chlorophyll concentration and production of Urochloa decumbens treated with diazotrophic bacteria and thiamine in the Brazilian Cerrado 重氮营养菌和硫胺素处理巴西塞拉多地区躺躺虫的叶绿素浓度和产量

IF 0.7 4区农林科学

Tropical Grasslands-Forrajes Tropicales Pub Date : 2021-01-30 DOI: 10.17138/TGFT(9)134-137

Eduardo Pradi Vendruscolo, Paulo R. de Oliveira, Aliny Heloísa Alcântara Rodrigues, Sávio Rosa Correia, L. F. C. Campos, A. Seleguini, Sebastião Ferreira de Lima

{"title":"Chlorophyll concentration and production of Urochloa decumbens treated with diazotrophic bacteria and thiamine in the Brazilian Cerrado","authors":"Eduardo Pradi Vendruscolo, Paulo R. de Oliveira, Aliny Heloísa Alcântara Rodrigues, Sávio Rosa Correia, L. F. C. Campos, A. Seleguini, Sebastião Ferreira de Lima","doi":"10.17138/TGFT(9)134-137","DOIUrl":"https://doi.org/10.17138/TGFT(9)134-137","url":null,"abstract":"The effects of application of Azospirillum brasilense and thiamine on chlorophyll concentration and forage mass of Urochloa decumbens were evaluated in a small plot experiment conducted in Goiânia, Goiás, Brazil. The treatments were applications of: A. brasilense (concentration of 10 mL/L); thiamine at 2 concentrations: 50 and 100 mg/L; combinations of A. brasilense and thiamine at the 2 concentrations; and a Control treatment (untreated grass). At the first harvest there was a trend for applying A. brasilense, either alone or in combination with thiamine, to increase the concentrations of chlorophyll, but differences were not always significant at P<0.05. Dry mass of forage from applying A. brasilense plus thiamine at 100 mg/L was greater than that for Control and thiamine at both concentrations. At the second harvest, chlorophyll concentrations were not affected by treatment (P>0.05), while dry matter production of forage from applying A. brasilense alone and thiamine at 100 mg/L was greater (P<0.05) than that of Control and thiamine at 50 mg/L. Larger-scale and longer-term studies to validate these preliminary findings are needed.","PeriodicalId":56049,"journal":{"name":"Tropical Grasslands-Forrajes Tropicales","volume":"119 1","pages":"134-137"},"PeriodicalIF":0.7,"publicationDate":"2021-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84880967","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Evaluation of sainfoin accessions exposed to powdery mildew disease at four locations in Iran 对伊朗四个地点暴露于白粉病的红豆油进行评价

IF 0.7 4区农林科学

Tropical Grasslands-Forrajes Tropicales Pub Date : 2021-01-30 DOI: 10.17138/TGFT(9)97-108

M. Alizadeh, A. Jafari, K. Sepahvand, Saied Davazdahemami, Mohammad Rahim Moeini, Farid Normand Moaied, B. Naseri

{"title":"Evaluation of sainfoin accessions exposed to powdery mildew disease at four locations in Iran","authors":"M. Alizadeh, A. Jafari, K. Sepahvand, Saied Davazdahemami, Mohammad Rahim Moeini, Farid Normand Moaied, B. Naseri","doi":"10.17138/TGFT(9)97-108","DOIUrl":"https://doi.org/10.17138/TGFT(9)97-108","url":null,"abstract":"In order to evaluate resistance of sainfoin (Onobrychis viciifolia) to powdery mildew, seeds of 19 accessions were collected from different parts of Iran and sown at 4 locations, i.e. Kheirabad, Khoramabad, Semirom and Tabriz, in 2014. Accessions were evaluated for powdery mildew severity index (DSI), forage dry matter yield (DM), dry matter digestibility (DMD) and crude protein (CP) and water soluble carbohydrate (WSC) concentrations over 4 years. Based on Duncan’s test, accessions 15353 and 3001 showed disease severity index lower than 25% and were nominated as resistant to powdery mildew. Accessions Oshnavieh and Polycross were considered semi-resistant due to their DSI ranging from 25 to 50%. Other accessions were considered susceptible because their DSI was higher than 50%. The resistant accessions (15353 and 3001) with average yields of 3,341 and 3,304 kg DM/ha were ranked as having high DM production, in addition to displaying high DMD plus high CP and WSC concentrations. Severity of powdery mildew infection was linked negatively with all 3 quality traits, i.e. DMD and CP and WSC concentrations. According to Eberhart/Russell regression results, stability of accessions 3001 and 15353 for DSI and DM yield was confirmed across 4 locations. We recommend the use of accessions 3001 and 15353 in future breeding programs to increase resistance to powdery mildew, while at least maintaining yield and quality attributes. Evaluation of other sources of sainfoin germplasm should continue to identify further resistant accessions.","PeriodicalId":56049,"journal":{"name":"Tropical Grasslands-Forrajes Tropicales","volume":"42 1","pages":"97-108"},"PeriodicalIF":0.7,"publicationDate":"2021-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90498595","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Selection for resistance to fungal diseases and other desirable traits in kikuyu grass (Cenchrus clandestinus) 基库尤草(Cenchrus clausdestinus)抗真菌性及其他理想性状的选择

IF 0.7 4区农林科学

Tropical Grasslands-Forrajes Tropicales Pub Date : 2021-01-30 DOI: 10.17138/TGFT(9)60-69

W. Fulkerson, Nathan R. Jennings, M. Callow, K. Harper, P. Wong, P. M. Martin

{"title":"Selection for resistance to fungal diseases and other desirable traits in kikuyu grass (Cenchrus clandestinus)","authors":"W. Fulkerson, Nathan R. Jennings, M. Callow, K. Harper, P. Wong, P. M. Martin","doi":"10.17138/TGFT(9)60-69","DOIUrl":"https://doi.org/10.17138/TGFT(9)60-69","url":null,"abstract":"While kikuyu (Cenchrus clandestinus) is an important grass for dairy and beef production in the subtropical region of Australia and the world, the most common cultivar, Whittet, is seriously affected by the fungal diseases, kikuyu yellows (Verrucalvus flavofaciens) and black spot (Bipolaris spp.). Thus resistance to these diseases is a priority in selecting a better kikuyu cultivar, along with higher herbage quality and yield and better winter growth. A study was conducted to identify suitable candidates from kikuyu ecotypes collected along the east coast of Australia plus lines obtained by subjecting Whittet to a mutagenic agent. Initial glasshouse studies identified 19 lines that were resistant to the KY1A strain of kikuyu yellows and 4 of these, with forage quality and yield superior to Whittet, were further evaluated in the field at 2 sites using Whittet as the control. At Site 1, line 12A demonstrated a much higher level of resistance to kikuyu yellows than Whittet, with 85% of plants resisting infection compared with only 15% of Whittet plants. At Site 2, the numbers of 12A and Whittet plants infected were similar. Further tests, using kikuyu yellows inoculum collected from 11 sites along the east coast of Australia, found that only 15% of 12A plants became infected compared with 61% of Whittet plants. Thus, kikuyu line 12A was resistant to most, but not all, strains of the kikuyu yellows pathogen. Annual yield of 12A (19,008 kg DM/ha) was 24% higher than that of Whittet and 12% higher than Acacia, but the difference was significant only for Whittet. During summer, 12A produced 10,212 kg DM/ha (24% higher than Whittet), was more active in early spring, had slightly higher dry organic matter digestibility (66.7 vs. 64.0%) and was resistant to black spot infection.","PeriodicalId":56049,"journal":{"name":"Tropical Grasslands-Forrajes Tropicales","volume":"21 1","pages":"60-69"},"PeriodicalIF":0.7,"publicationDate":"2021-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84343698","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Salinity tolerance of Avena sativa fodder genotypes 玉米饲料基因型的耐盐性

IF 0.7 4区农林科学

Tropical Grasslands-Forrajes Tropicales Pub Date : 2021-01-30 DOI: 10.17138/TGFT(9)109-119

A. Roy, D. Malaviya, A. Anand, R. N. Choubey, M. J. Baig, Kuldeep Dwivedi, P. Kaushal

{"title":"Salinity tolerance of Avena sativa fodder genotypes","authors":"A. Roy, D. Malaviya, A. Anand, R. N. Choubey, M. J. Baig, Kuldeep Dwivedi, P. Kaushal","doi":"10.17138/TGFT(9)109-119","DOIUrl":"https://doi.org/10.17138/TGFT(9)109-119","url":null,"abstract":"Oats (Avena sativa L.) is an important winter season fodder cultivated in many parts of the world. India faces huge shortages of green forage and possesses large salt-affected areas, so identification of salt-tolerant material offers scope for breeding of cultivars for increasing production from salt-affected soils. Forty-eight genotypes of oats comprised of cultivars, germplasm accessions and advanced breeding lines were evaluated with the aim of identifying salt-tolerant genotypes for use on saline soils and/or in programs to breed more salt-tolerant cultivars. Screening was carried out at different growth stages in both pot and field studies. Germination and seedling vigor at different levels of salinity in terms of electrical conductivity (EC), i.e. EC4, EC8, EC12 and EC16, were assessed. Field-level salinity tolerance was assessed in pits where soils had EC ranging from 3.3 to 3.6 dS/m and pH 9.6. Sand culture experiments were carried out on 2 genotypes at different levels of NaCl solution as well as saline soil scrap solution so as to simulate a real field situation. Na, K, Ca and proline concentrations were estimated to understand the mechanism of salinity tolerance of the crop. The study resulted in identification of some suitable genotypes with acceptable levels of salt tolerance, which can be used in developing productive cultivars for saline soils.","PeriodicalId":56049,"journal":{"name":"Tropical Grasslands-Forrajes Tropicales","volume":"10 1","pages":"109-119"},"PeriodicalIF":0.7,"publicationDate":"2021-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83578030","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Effects of a nitrogen-based supplement on intake, live weight and body energy reserves in breeding Bos indicus cross cows 氮基饲粮对籼稻杂交奶牛采食量、活重和体能储备的影响

IF 0.7 4区农林科学

Tropical Grasslands-Forrajes Tropicales Pub Date : 2021-01-30 DOI: 10.17138/TGFT(9)70-80

R. Dixon, R. Mayer

{"title":"Effects of a nitrogen-based supplement on intake, live weight and body energy reserves in breeding Bos indicus cross cows","authors":"R. Dixon, R. Mayer","doi":"10.17138/TGFT(9)70-80","DOIUrl":"https://doi.org/10.17138/TGFT(9)70-80","url":null,"abstract":"Breeding cows grazing seasonally dry rangelands usually lose substantial live weight (LW) during the dry season, when in late pregnancy. An experiment investigated the effects of feeding a N-based supplement to cows in late pregnancy on voluntary intake, total live weight (T-LW), body condition score (CS) and estimated body net energy content (Body-NE), as well as carry-over effects during lactation. In Phase A for 139 days from mid-pregnancy, mature Bos indicus cross breeders [initially 438 kg T-LW and 5.7 CS units (9-point scale)] were fed in pens on low quality tropical grass hay alone (Control) or with a N supplement (Supplemented). Most (17/22) of the cows calved during this interval. Voluntary hay intake averaged 6.74 g DM/kg T-LW/d in Control cows, and was increased by 35% (P<0.001) when supplement was fed. As a result, feeding supplement reduced loss in conceptus-free live weight (CF-LW) by 30% (from 1.11 kg/d to 0.78 kg/d; P<0.001) and in Body-NE by 20% (from 26.6 to 21.2 MJ NE/d; P = 0.007). Control cows mobilized 24% of maternal LW and 32% of body energy when fed low quality hay during late pregnancy, and these losses were substantially reduced when a N-based supplement was fed. During Phase B, when the lactating cows with their calves grazed a high quality rainy season grass-Stylosanthes pasture, the previously supplemented cows produced more milk (P = 0.065) and their calves grew faster (P = 0.077) in early lactation than Control cows. In addition, during early lactation Control cows exhibited compensatory LW gain relative to the Supplemented cows (0.80 vs. 0.43 kg/d, respectively; P<0.001) and there was no discernable weight difference between the groups by 205 days of lactation. In conclusion the losses in LW and body energy reserves by late pregnant cows fed low quality tropical grass hay were substantially reduced by a N supplement, but the differences were not maintained when the cows subsequently grazed high quality pasture.","PeriodicalId":56049,"journal":{"name":"Tropical Grasslands-Forrajes Tropicales","volume":"102 1","pages":"70-80"},"PeriodicalIF":0.7,"publicationDate":"2021-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75846371","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hybrids of Paspalum plicatulum × P. guenoarum: Selection for forage yield and cold tolerance in a subtropical environment 亚热带环境下雀稗与雀稗杂交品种的产草量和耐寒性选择

IF 0.7 4区农林科学

Tropical Grasslands-Forrajes Tropicales Pub Date : 2021-01-30 DOI: 10.17138/TGFT(9)138-143

K. Saraiva, M. Dall’Agnol, E. A. M. D. Motta, E. A. Pereira, C. H. L. Souza, C. Simioni, R. Weiler, M. Kopp, R. Schneider-Canny, Marlon Risso Barbosa

{"title":"Hybrids of Paspalum plicatulum × P. guenoarum: Selection for forage yield and cold tolerance in a subtropical environment","authors":"K. Saraiva, M. Dall’Agnol, E. A. M. D. Motta, E. A. Pereira, C. H. L. Souza, C. Simioni, R. Weiler, M. Kopp, R. Schneider-Canny, Marlon Risso Barbosa","doi":"10.17138/TGFT(9)138-143","DOIUrl":"https://doi.org/10.17138/TGFT(9)138-143","url":null,"abstract":"Selection of improved genotypes is important for pasture-based feeding systems in subtropical regions. Our goal was to identify hybrids of Paspalum with enhanced forage yield and cold tolerance across 2 sites [Bagé and Eldorado do Sul (ES)], in Rio Grande do Sul, Brazil. We evaluated 19 P. plicatulum × P. guenoarum hybrids, P. plicatulum genotype 4PT, P. guenoarum cultivars Azulão and Baio and, as Control, Megathyrsus maximus cv. Aruana. At both sites, the experimental design was a completely randomized block with 4 replications. Total dry mass (total-DM), leaf-DM and cold tolerance (ColdT) were recorded. At Bagé, hybrid 102069 produced higher total-DM and leaf-DM than the progenitors and cv. Aruana, while at ES, hybrids 102069 and 10308 produced higher total-DM than 4PT, Azulão and Aruana; hybrid 102069 had higher leaf-DM. At Bagé, 16 hybrids displayed ColdT similar to their progenitors and higher than Aruana, while at ES, 12 hybrids showed ColdT similar to Azulão and Baio and higher than 4PT and Aruana. This study demonstrated that hybrids of Paspalum with superior forage yield to their progenitors and Aruana, and hybrids with higher ColdT than 4PT and Aruana are in existence. The hybridization technique shows potential for producing alternative genotypes with higher forage yield and ColdT for sowing in subtropical regions.","PeriodicalId":56049,"journal":{"name":"Tropical Grasslands-Forrajes Tropicales","volume":"4 1","pages":"138-143"},"PeriodicalIF":0.7,"publicationDate":"2021-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72883500","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Comparison of forage production and nutritive value of 10 Grona spp. accessions in Danzhou, Hainan, China 海南儋州10种格罗纳牧草产量及营养价值比较

IF 0.7 4区农林科学

Tropical Grasslands-Forrajes Tropicales Pub Date : 2021-01-30 DOI: 10.17138/TGFT(9)81-88

Linlin Yan, Rongshu Dong, W. Wenqiang, S. Douxchamps, M. Atieno, Guodao Liu, Yiming Liu

{"title":"Comparison of forage production and nutritive value of 10 Grona spp. accessions in Danzhou, Hainan, China","authors":"Linlin Yan, Rongshu Dong, W. Wenqiang, S. Douxchamps, M. Atieno, Guodao Liu, Yiming Liu","doi":"10.17138/TGFT(9)81-88","DOIUrl":"https://doi.org/10.17138/TGFT(9)81-88","url":null,"abstract":"The demand for high-quality forages is increasing in tropical regions, and could be filled with legume species of the genus Grona, which have good nutritive value. In this study, a comparison of the forage production and nutritive value of 10 accessions of Grona spp. was carried out in the field at Danzhou, Hainan from 2016 to 2018. Yield, plant height, survival rate, leaf:stem ratio and concentrations of crude protein, crude fiber, crude fat (ether extract), nitrogen free extract, crude ash, calcium and phosphorus were measured. Results showed that Grona strigillosa (syn. Desmodium strigillosum) cv. Reyan No. 27 and G. heterocarpa subsp. ovalifolia (syn. Desmodium ovalifolium) cv. Maquenque displayed the best performance, owing to their 261.3% and 235.6% higher dry matter yields, respectively, compared with the Control germplasm, G. heterocarpa subsp. ovalifolia cv. Reyan No. 16 in 2018. Cultivar Maquenque had a higher survival rate than the Control (P<0.05). Regarding nutritive value, cv. Reyan No. 27 exhibited higher crude fat and crude fiber but lower Ca concentrations than the Control (P<0.05). Based on PCA ranking, we concluded that cvv. Maquenque and Reyan No. 27 could be used as suitable candidate materials for livestock production in tropical regions of China. Further studies on their tannin concentrations and their acceptability by animals are needed before practical recommendations can be made.","PeriodicalId":56049,"journal":{"name":"Tropical Grasslands-Forrajes Tropicales","volume":"8 1","pages":"81-88"},"PeriodicalIF":0.7,"publicationDate":"2021-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78819850","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fermentation quality and aerobic stability of Napier grass ensiled with citric acid residue and lactic acid bacteria 柠檬酸渣和乳酸菌青贮纳皮草发酵品质及好氧稳定性

IF 0.7 4区农林科学

Tropical Grasslands-Forrajes Tropicales Pub Date : 2021-01-30 DOI: 10.17138/TGFT(9)52-59

Xuxiong Tao, Chong-Xiao Ji, Sifan Chen, Jie Zhao, Siran Wang, Junfeng Li, F. Sun, T. Shao

{"title":"Fermentation quality and aerobic stability of Napier grass ensiled with citric acid residue and lactic acid bacteria","authors":"Xuxiong Tao, Chong-Xiao Ji, Sifan Chen, Jie Zhao, Siran Wang, Junfeng Li, F. Sun, T. Shao","doi":"10.17138/TGFT(9)52-59","DOIUrl":"https://doi.org/10.17138/TGFT(9)52-59","url":null,"abstract":"This study was conducted to investigate the effects of adding citric acid residue (CAR) with or without lactic acid bacteria (LAB) to Napier grass (Cenchrus purpureus; syn. Pennisetum purpureum) cv. Sumu No. 2 at ensiling on the fermentation quality and aerobic stability of the resulting silage. Treatments included: Control (Napier grass forage without additives); and Napier grass inoculated with lactic acid bacteria (Lactobacillus plantarum and L. buchneri) at 1 × 10 cfu/g fresh weight (FW) forage (LAB) or 36 g citric acid residue/kg FW forage (CAR) or a mixture of CAR and LAB (CL). Forty-five days after ensiling the silages were tested for chemical and microbial composition and an aerobic stability test was conducted. The addition of CAR with or without LAB increased the DM and lactic acid concentrations in silage and decreased pH plus acetic acid, ammonia nitrogen (NH3-N), neutral detergent fiber and cellulose concentrations relative to Control. The pH in LAB silage was lower than in Control, while lactic acid concentration was higher. During the first 2 days of aerobic exposure, all additives increased the water-soluble carbohydrate (WSC) and lactic acid concentrations and decreased pH plus NH3-N and acetic acid concentrations. Moreover, CL silages had the highest WSC and the lowest NH3-N and acetic acid concentrations during aerobic exposure. However, all additives failed to improve the aerobic stability of the silage. While CAR with or without LAB inoculant improved the fermentation quality of silage made from Napier grass, more studies are warranted to identify additives which can improve aerobic stability of the silage after opening.","PeriodicalId":56049,"journal":{"name":"Tropical Grasslands-Forrajes Tropicales","volume":"26 1","pages":"52-59"},"PeriodicalIF":0.7,"publicationDate":"2021-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85104754","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Tropical Grasslands-Forrajes Tropicales Vol.9 No.2 热带草原-热带饲料第9卷第2期

IF 0.7 4区农林科学

Tropical Grasslands-Forrajes Tropicales Pub Date : 2021-01-30 DOI: 10.17138/tgft(9)144-248

Tgft Journal

引用次数: 0