scholarly journals Improved grazing activity of dairy heifers in shaded tropical grasslands

2017 ◽  
Vol 47 (2) ◽  
Author(s):  
Andréia Cristina Tavares de Mello ◽  
Roberta Aparecida Carnevalli ◽  
Luciano Shozo Shiratsuchi ◽  
Bruno Carneiro e Pedreira ◽  
Luciano Bastos Lopes ◽  
...  
Keyword(s):  
Production Systems ◽  
Average Weight ◽  
Daily Routine ◽  
Mato Grosso ◽  
Grazing Behavior ◽  
Dairy Heifers ◽  
Tropical Grasslands ◽  
Different Seasons ◽  
Feeding Activities ◽  
Hot Weather

ABSTRACT: Trees in the production systems can effectively reduce hot weather-induced stress in the Brazilian Midwest. High temperatures cause changes in animals daily routine, and trees into pastures can promote benefits. The aim of this research was to evaluate the behavior of dairy heifers in silvopastoral systems in the state of Mato Grosso, Brazil. A herd of 24 crossbreed heifers (3/4 and 7/8 Holstein/Zebu), 350kg average weight, was evaluated over three seasons. Piatã grass was managed under three shade levels: full-sun, moderate-shade, and intensive-shade provided by 10 to 12m high Eucalyptus trees. Behavior data were collected every 15 minutes from 8:30h to 16h. Shade availability significantly impacted heifer behavior, mainly affecting grazing frequency and time during the hottest hours. Grazing behavior was affected by shade levels during the different seasons. Heifers showed preferred grazing times. Heifers in the intensive-shade system visited shady areas during the hottest hours throughout the seasons. Heifers in the full sun-system avoided grazing during the warmer times, ceasing feeding activities. Our results from the Brazilian Midwest showed that shade availability causes breed heifers to change their daily routine.

Crop, livestock and forestry performance assessment under different production systems in the north of Mato Grosso, Brazil

2018 ◽  
Vol 93 (6) ◽  
pp. 2085-2096 ◽  
Author(s):  
C. A. S. Magalhães ◽  
B. C. Pedreira ◽  
H. Tonini ◽  
A. L. Farias Neto
Keyword(s):  
Performance Assessment ◽  
Production Systems ◽  
Mato Grosso ◽  
The North

scholarly journals Okra seedlings production in protected environment, testing substrates and producing fruits in field

2013 ◽  
Vol 31 (1) ◽  
pp. 08-14 ◽  
Author(s):  
Edilson Costa ◽  
Taynara G de Souza ◽  
Gleciane de L Benteo ◽  
Katiane SS Benett ◽  
Cleiton GS Benett
Keyword(s):  
Block Design ◽  
Joint Analysis ◽  
State University ◽  
Mato Grosso ◽  
Randomized Block Design ◽  
Randomized Design ◽  
Completely Randomized Design ◽  
Hot Weather ◽  
Favorable Conditions ◽  
Mato Grosso Do Sul

The okra grows well in hot weather, finding favorable conditions for development in Brazil. We evaluated the production of okra seedlings and productivity. The experiment was conducted in the experimental area of the State University of Mato Grosso do Sul, in Aquidauana. In the seedling phase we tested substrates (100% triturated cassava stems, 75% triturated cassava stems and 25% vermiculite, 50% triturated cassava stems and 50% vermiculite, 25% triturated cassava stems and 75% vermiculite and 100% vermiculite). These substrates were placed in two protected environments (nursery with black screen, 50% of shading, and aluminized screen, 50% of shading). Each environment was considered an experiment conducted in completely randomized design with eight replications. After that we realized joint analysis. In the field, a total of 10 treatments generated from combinations of environments and substrates (2 environments x 5 substrates) were distributed in a randomized block design with four replications. The average proportions of cassava stems and vermiculite may be suitable for okra seedlings. The results of shoot and total dry phytomass indicate that the aluminized screen can be recommended for okra seedlings production when the substrate with a 1:1 ratio is used. Seedlings grown on higher percentages of vermiculite anticipate production, while seedlings produced only in cassava stems tend to slow it down. The aluminized screen tends to increase the yield of okra seedlings. Average proportions of vermiculite and cassava stems for seedling production under aluminized screen, provide more fruits and yield of okra in Aquidauana.

scholarly journals Crotalaria species in succession to soybean for the management of Pratylenchus brachyurus

2020 ◽  
Vol 50 (7) ◽  
Author(s):  
Thays Torquato Cruz ◽  
Guilherme Lafourcarde Asmus ◽  
Rodrigo Arroyo Garcia
Keyword(s):  
Production Systems ◽  
High Capacity ◽  
Suppressive Effect ◽  
Nematode Population ◽  
Agricultural Crop ◽  
Root Lesion Nematode ◽  
Soil Pathogens ◽  
Mato Grosso ◽  
Pratylenchus Brachyurus ◽  
Lesion Nematode

ABSTRACT: Soybean is the main agricultural crop in the State of Mato Grosso do Sul, Brazil. It is primarily cultivated in a crop succession system, in wich soybean is grown in spring/summer, followed by corn or graminaceous pastures in autumn/winter as a second crop. Due to the intensive cultivation, new phytosanitary problems have arisen, among them the root-lesion nematode, Pratylenchus brachyurus, which besides causing damage to plant roots, can be important gateway for other soil pathogens. The recent occurrence of high nematode population densities has brought great concern due to the limited resistant soybean genotypes available. Besides, the use of nematicides only reduces nematodes populations temporarily. A viable alternative for the control of soil nematodes could be the use of Crotalaria spp. in succession or rotation with soybean. Crotalaria is immune or a bad host to the nematode, besides having high capacity of biological nitrogen fixation. Thus, the objective of the present research was to define the best way of insertion of this legume as a second crop in soybean production systems to reduce the population density of the root-lesion nematode. Two experiments were carried out: one in the field, in an infested area, and other in a greenhouse. In both experiments, the treatments were: 1) Zea mays, 2) Brachiaria brizantha cv. Xaraés,, 3) Z. mays + Crotalaria spectabilis, 4) Z. mays + C. ochroleuca, 5) B. brizantha cv. Xaraés + C. spectabilis, 6) B. brizantha cv. Xaraés + C. ochroleuca, 7) C. spectabilis, and 8) C. ochroleuca. The effect of the treatments was evaluated by estimating the number of nematodes in the roots of autumn/winter crops, as well as in the roots of the soybean cultivated in the sequence. The cultivation of both Crotalaria species provided suppression of the nematode population. However, when intercropped with corn or Xaraés palisade grass, the suppressive effect of Crotalaria was supplanted by corn and Xaraés palisadegrass susceptibility to the root-lesion nematode.

scholarly journals Genetic evidence of population structuring in the neotropical freshwater fish Brycon hilarii (Valenciennes, 1850)

2007 ◽  
Vol 67 (4 suppl) ◽  
pp. 889-895 ◽  
Author(s):  
A Sanches ◽  
PM. Galetti Jr
Keyword(s):  
Genetic Structure ◽  
River Basin ◽  
Migratory Fish ◽  
Mato Grosso ◽  
Paraguay River ◽  
Lack Of Information ◽  
Population Structuring ◽  
Different Seasons ◽  
Initial Idea ◽  
Management And Conservation

Brycon hilarii is a migratory fish widely distributed throughout the Paraguay River Basin. It is appreciated in sport fishing and for its superior meat quality. It is also the main species for tourist attraction in the Bonito region (State of Mato Grosso do Sul, Brazil). Considering the lack of information on the genetic structure of the fish of this species, the aim of the present study was to detect the genetic variability of Brycon hilarii through RAPD markers. A total of eighty specimens collected in different seasons at four sites of the Miranda River sub-basin (Paraguay River Basin, Brazil) were used for analysis. The results of genetic similarity, Shannon diversity, and AMOVA revealed differences between the sampling sites. Through AMOVA, differences between populations were more evident among the animals collected during the non-reproductive season, corresponding to a time of less movement of these fish. A population structuring model in which B. hilarii appears organized into genetically differentiated reproductive units that coexist and co-migrate through the studied system was suggested, contrasting the currently accepted idea that freshwater migratory fish form large panmictic populations in a determined hydrographic system. Despite the lack of a complete picture regarding the distribution of B. hilarii in the studied region, this initial idea on its population genetic structure could be an important contribution to providing aid for management and conservation programs of these fish.

scholarly journals Effects of Dietary Forage Proportion on Feed Intake, Growth Performance, Nutrient Digestibility, and Enteric Methane Emissions of Holstein Heifers at Various Growth Stages

Animals ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 725 ◽  
Author(s):  
Lifeng Dong ◽  
Binchang Li ◽  
Qiyu Diao
Keyword(s):  
Growth Performance ◽  
Feed Intake ◽  
Linear Prediction ◽  
Production Systems ◽  
Nutrient Digestibility ◽  
Accurate Estimation ◽  
Average Weight ◽  
Growth Stages ◽  
Ch4 Emissions ◽  
Enteric Methane

Enteric methane (CH4) emissions from young ruminants contribute to a substantial proportion of atmospheric CH4 accumulation. Development of emission inventory and mitigation approaches needs accurate estimation of individual emission from animals under various physiological conditions and production systems. This research investigated the effect of different dietary concentrate contents on feed intake, growth performance, nutrient digestibility and CH4 emissions of heifers at various stages, and also developed linear or non-linear prediction equations using data measured by sulphur hexafluoride tracer technique. Increasing dietary concentrate contents increased feed intake and growth rate, enhanced nutrient digestibility, and reduced enteric CH4 emissions. Heifers at the age of 9, 12, and 15 months with an average weight of 267.7, 342.1, and 418.6 kg produced 105.2, 137.4, and 209.4 g/day of CH4, and have an average value of CH4 energy per gross energy intake (Ym) 0.054, 0.064, 0.0667, respectively. Equations relating CH4 emission values with animal and feed characteristics were developed with high determination coefficients for heifers at different growth stages. Dietary concentrate contents had significant influence on overall performance of heifers. These data can be used to develop regional or national emission inventories and mitigation approaches for heifers under various production regimes in China.

Gamasina mite communities (Acari: Mesostigmata) in grain production systems of the southwestern Brazilian Amazon

2021 ◽  
Vol 26 (1) ◽  
pp. 1-14
Author(s):  
Matheus C. De Castro ◽  
Emiliano B. De Azevedo ◽  
Erika P. J. Britto ◽  
Marliton R. Barreto ◽  
Rafael M. Pitta ◽  
...  
Keyword(s):  
Production Systems ◽  
Abundant Species ◽  
Grain Production ◽  
Ecological Stability ◽  
Biological Pest Control ◽  
Mato Grosso ◽  
Cultivation System ◽  
Ecological Changes ◽  
Mite Communities ◽  
Short Time

Emphasis has been given in the Brazilian state of Mato Grosso to the implementation of more sustainable production practices, including what has been termed agrosilvopastoral production system (ASPS), which involves the integration of different types of land use in a same area along time, seeking increased ecological stability. The Gamasina mite group (order Mesostigmata) is usually diverse and abundant in non-cultivated soils, where they can prey on arthropods and nematodes; some are commercialized for biological pest control. The objective of this study was to evaluate the diversity and abundance of edaphic Gamasina in plots of grain production managed under conventional (alternating cultivation) system and under ASPS, both with the adoption of no-tillage cultivation, in the municipality of Sinop, Mato Grosso state. In samples of soil and litter taken biweekly from August 2015 to May 2016, 762 Gamasina representing 32 species of 21 genera and nine families were collected. Considering both systems together, the dominant Gamasina were quite different from those of other parts of Brazil. Calculated ecological indexes showed no major differences between the two systems, possibly because of the relatively short time since the implementation of ASPS. In both systems, Rhodacaridae was one of the dominant families (37.5% of the Gamasina), followed by Macrochelidae (20.9%) and Laelapidae (18.8%). The most abundant species were Multidentirhodacarus squamosus Karg (Rhodacaridae), a new species of Holostaspella (Macrochelidae) and Cosmolaelaps barbatus Moreira, Klompen and Moraes (Laelapidae). Future studies are warranted, allowing more time for the adoption of ASPS to produce possible ecological changes.

scholarly journals Diet and feeding daily rhythm of Pimelodella lateristriga (Osteichthyes, Siluriformes) in a coastal stream from Serra do Mar - RJ

2010 ◽  
Vol 70 (4) ◽  
pp. 1123-1129 ◽  
Author(s):  
R. Mazzoni ◽  
M. Moraes ◽  
CF. Rezende ◽  
R. Iglesias-Rios
Keyword(s):  
Aquatic Insects ◽  
Daily Rhythm ◽  
Mato Grosso ◽  
Serra Do Mar ◽  
System A ◽  
Nocturnal Feeding ◽  
Feeding Activities ◽  
Gut Fullness ◽  
June July ◽  
Nocturnal Period

The present study was carried out in Mato Grosso fluvial system, a costal drainage from Serra do Mar. We analysed the diet and the feeding daily rhythm of Pimelodella lateristriga from samples carried out during 24 hours over a 4 hour fishing interval, in June, July and September, 2006 as well as in January and February, 2007. Diet was described from the Feeding Index (IAi) and feeding daily rhythm was verified through the Gut Fullness Index (GFI). Pimelodella lateristriga diet was composed of 37 items, being aquatic insects the most important ones. IAi analysis revealed that Diptera, Trichoptera and Ephemeroptera amounted to 90% of the diet. Autochthonous invertebrates were the most important consumed items. Pimelodella lateristriga concentrated its feeding activities in the nocturnal period (10:00 PM to 2:00 AM) with marked significant differences (F = 16.11; gl = 5; p < 0.05) between each diurnal and nocturnal periods. Between 6:00 AM and 6:00 PM, foraging activity was gradually reduced. We concluded that P. lateristriga has an insectivorous diet and a nocturnal feeding habit with greater activity between 10:00 PM to 2:00 AM.

Evaluation of a long-established silvopastoral Brachiaria decumbens system: plant characteristics and feeding value for cattle

2019 ◽  
Vol 70 (9) ◽  
pp. 814 ◽  
Author(s):  
Marina A. Lima ◽  
Domingos S. C. Paciullo ◽  
Fabyano F. Silva ◽  
Mirton J. F. Morenz ◽  
Carlos A. M. Gomide ◽  
...  
Keyword(s):  
Protein Content ◽  
Crude Protein ◽  
Nutritive Value ◽  
Production Systems ◽  
Crude Protein Content ◽  
Brachiaria Decumbens ◽  
Dairy Heifers ◽  
Feeding Value ◽  
Signal Grass ◽  
The Difference

One of the main challenges of using a silvopastoral system (SPS) is maintaining pasture and animal productivity over time. Our objective was to compare the productive characteristics and nutritive value of signal grass (Brachiaria decumbens cv. Basilisk) and the liveweight gain of dairy heifers in a SPS and open pasture (OP, signal grass under full sunlight) during the rainy seasons of four experiments between 2003 and 2016, which characterised systems from their 6th to 19th years after establishment in south-eastern Brazil when analysed together. The experimental design was a randomised complete block in a 2 × 4 factorial scheme (two production systems (SPS and OP) and four experiments (2003–2004, 2004–2007, 2011–2014 and 2014–2016)). From the 7th year onwards, the progressive reduction of photosynthetically active radiation negatively impacted the productive characteristics of the SPS pasture. Total forage mass was reduced by 19% in SPS compared with the OP in 2004–2007, 38% in 2011–2014 and 31% in 2014–2016. Crude protein content was 23% and 30% higher in the SPS than in the OP in 2011–2014 and 2014–2016, respectively. However, during the study period (until the 19th year), the liveweight gain of heifers was similar between systems since the higher crude protein content available in SPS contributed to improved forage nutritional value. From the 17th to the 19th year, weight gain per area was lower in the SPS compared with the OP (169 vs 199 kg ha–1), although the difference between systems was small. Signal grass presents a high degree of phenotypic plasticity in response to changes in shade levels, which gives this species a high potential for use in SPS.

scholarly journals Does Rural Livestock Farmers’ Have Knowledge of Organic Livestock Farming Practices? Lesson from Southeast, Nigeria

2021 ◽  
Author(s):  
Orgu Kenneth Chima ◽  
Chukwu Andy Onyema ◽  
Onubuogu Gilbert Chinedu ◽  
Esiobu Nnaemeka Success
Keyword(s):  
Organic Farming ◽  
Environmental Sustainability ◽  
Production Systems ◽  
Farm Animals ◽  
Livestock Farming ◽  
Livestock Farmers ◽  
Hot Weather ◽  
The Government ◽  
To Come ◽  
Safe Food

At global level, the use of inorganic feeds, veterinary drugs amongst others can significantly increase farm output in various livestock production systems. However, in recent times, quality-conscious consumers are increasingly seeking environmentally safe and chemical-residue free healthy livestock foods which organic production methods are said to ensure. Livestock Organic farming can offer promising opportunities for ensuring safe food, environmental sustainability, high livestock yield and income. Incidentally, empirical evidence on present discourse is still relatively very little. Although, a significant contribution has been made by various scholars, regrettably, these studies did not dwell on organic livestock practices and their knowledge level in South-east, Nigeria. Therefore, this presents a dearth in research and became increasingly pertinent that the study was systematically undertaken. A multistage and purposive random sampling procedure was used in the selection of 504 respondents who are organic livestock farmers. Data collected was analyzed using mean score analysis. Result shows that farmers had knowledge on practices of extensive system of livestock/poultry farming (X̄=3.49); provision of natural air (X̄=3.50); provision of natural water sprinkling during hot weather (X̄=3.50); rearing animal without antibiotics (X̄=3.56); and treating injured animals organically (X̄=3.48) among others. Incidentally, majority of the livestock farmers lacked knowledge of how to induce ovulation for animals without drugs (X̄=1.88). The inducement of ovulation for farm animals is one of the livestock organic methods used in forcing farm animals to come on heat/ovulation for quick multiplication. This method is harmful both for the animal an eventual consumer. Therefore, it is necessary that extension agents who are subject matter specialist (SMS) in livestock organic farming educate farmers on how to induce ovulation to farm animals organically with support from the government and farmers cooperative membership resources as these would significantly reduce harmful drugs injected to animal for quick ovulation and preserve the life span of the animal and consumers of the animal.

scholarly journals Agronomic Performance and Heterosis in Common Bean Genotypes

2020 ◽  
Vol 8 (4) ◽  
pp. 387
Author(s):  
Valvenarg Pereira da Silva ◽  
Marco Antonio Aparecido Barelli ◽  
Rafhael Felipin-Azevedo ◽  
Juliana Parisotto Poletine ◽  
Cristiani Santos Bernini
Keyword(s):  
Common Bean ◽  
Block Design ◽  
Final Height ◽  
Diallel Cross ◽  
Average Weight ◽  
Average Height ◽  
Agronomic Performance ◽  
Mato Grosso ◽  
Longitudinal Length ◽  
Number Of Seeds

The agronomic performance and heterosis of common bean genotypes were evaluated using the diallel cross between two cultivars IPR Uirapuru and IPR Campos Gerais and five local varieties BGU-1, BGU-7, BGU-13, BGU-36 and BGU-36 and its 21 possible diallel hybrids. The treatments were evaluated under greenhouse conditions in a randomized block design with ten replications, at the Empresa Mato-Grossense de Pesquisa, Assistência e Extensão Rural (EMPAER), in the county of Cáceres, state of Mato Grosso, Brazil. The characteristics were evaluated: average number of days for emergence, number of days for flowering, average height of insertion of the first pod, average final height of plants, average stem diameter, average longitudinal length of pods, average total number of pods per plant, average number of seeds per pod, average number of seeds per plant, average weight of seeds and grain production. Based on the set of analysis performed and the characteristics evaluated, it can be concluded that for the increase in production the combinations composed by the parents IPR Uirapuru × BGU-1, IPR Uirapuru × BGU-6, BGU-7 × BGU-1, BGU -7 × BGU-36, BGU-1 × BGU-36, BGU-25 x BGU-36 and BGU-13 × BGU-36 showed positive

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