scholarly journals Estrategias modernas para la conservación de forrajes en sistemas de producción bovina tropical

2005 ◽  
Vol 6 (2) ◽  
pp. 69 ◽  
Author(s):  
Leonardo Sánchez Matta
Keyword(s):  
Nutritional Quality ◽  
Production Systems ◽  
Climatic Variation ◽  
Seasonal Effects ◽  
Manual Labour ◽  
Animal Growth ◽  
Chemical Conditions ◽  
Physical And Chemical ◽  
Made In

<p>Los sistemas de producción bovina en Colombia emplean el pastoreo de especies forrajeras para la alimentación básicamente porque este sistema demanda menor uso de mano de obra. No obstante, la dependencia de las praderas de pastoreo tiene como desventajas los efectos de las variaciones climáticas y las condiciones químicas y físicas del suelo que ocasionan considerables reducciones en la disponibilidad y calidad nutricional del forraje; este efecto se denomina 'estacionalidad forrajera' y acompaña las épocas secas, lo cual impacta negativamente las tasas de crecimiento animal y su producción,  además de reducir la carga animal. Por otra parte, durante las épocas de lluvias se presentan excedentes de forrajes que no se conservan o se ofrecen en estados avanzados de madurez, lo que afecta su calidad nutricional y la productividad. Si bien ha habido avances en las prácticas de conservación de forrajes, es necesario intensificar estos procesos así como desarrollar otras alternativas, como los forrajes resistentes a la sequía, para enfrentar los efectos adversos de la estacionalidad. En este artículo se revisan algunas estrategias y tecnologías disponibles para optimizar los procesos fermentativos que aseguren la calidad del producto ensilado, altos niveles de consumo y una alta productividad animal.</p><p> </p><p><strong>Modern strategies for conserving forage in tropical bovine production systems</strong></p><p>Colombian bovine production systems basically employ grazing on pasture forages since as this is an economic system involving little manual labour.  However, dependence on pasture for grazing carries with it the disadvantages of the effects of climatic variation and a particular soil's physical and chemical conditions. Significant reductions in the availability and quality of forage thus occur during the dry season an effect known as the 'seasonal nature of fodder', leading to reducing animal load production levels and animal growth rates. Conversely, there is a surplus of forage during the rainy season which is not preserved or is offered in an advanced state of maturity; this also affects its nutritional quality and therefore productivity. Some progress has been made in the practice of conserving forage; however, such processes must be intensified and altematives developed using drought-resistant materials, thereby counteracting the seasonal effects determined by climatic variation. Current strategies and/or technologies must thus be reviewed as they have a direct effect on the process and/or type of fermentation leading to maintaining and/or improving product quality or ensuring that it is preserved for ensuring high levels of consurnption and animal productivity.</p>

scholarly journals Effect of season on Ejaculate Quality of three phenotypes of Nigerian Local Cocks

2021 ◽  
Vol 34 (2) ◽  
pp. 323-329
Author(s):  
N.S Machebe ◽  
A.G Ezekwe
Keyword(s):  
Gradual Increase ◽  
Dry Season ◽  
Seasonal Effects ◽  
Chemical Parameters ◽  
Sodium Potassium ◽  
Naked Neck ◽  
Dry Seasons ◽  
Physical And Chemical ◽  
Season Interaction

Twenty four (24) adult Nigerian local cocks comprising 8 normal, 8 frizzle and 8 naked-neck were subjected to two ejaculations per week for seven weeks in each season (early rain, lale rain, early dry and late dry seasons) using the massage technique. Ejaculates were subjected to both physical and chemical evaluations. Results showed a significant (P<0.01) seasonal effects between phenotypes in reaction time. In all the seasons, naked-neck and frizzle cocks had higher (P<0.01) ejaculate volume, sperm motility and total sperm than normal cocks. A highly significant (P<0.01) phenotype by season interaction was observed with naked-neck producing better quality ejaculates during the dry season when compared to other phenotypes. Significant (P<0.05) differences were noted in the percent abnormal sperm among the seasons. There were no significant season by phenotype interactions (P>0.05) in most of the chemical parameters (Na+1, K+1, Ca2+, Mg2+, and total protein) evaluated. However, a gradual increase in seminal protein was observed among the phenotypes with a peak during late dry season. The cations (particularly sodium, potassium and calcium) and chloride constituents of ejaculates were significantly lower during the late dry season than at most other seasons. From these results it was concluded that the naked-neck and frizzle cocks appear superior to the normal cocks in semen output and quality under the humid tropical environment.

scholarly journals AVALIAÇÃO PRELIMINAR DAS CONDIÇÕES HIDROGEOLÓGICAS NA ÁREA DO MUNICÍPIO DE OURO PRETO, MG.

2013 ◽  
Author(s):  
Quênia de Cássia Goulart Ferreira ◽  
Luis de Almeida Prado Bacellar
Keyword(s):  
Crystalline Basement ◽  
Primary Data ◽  
Inorganic Elements ◽  
Aquifer System ◽  
Aquifer Systems ◽  
Chemical Conditions ◽  
Physical And Chemical ◽  
The City ◽  
Iron Formations ◽  
Made In

O conhecimento da dinâmica natural e da qualidade das águas subterrâneas no município de Ouro Preto éainda deficiente. Em vista disto, foi elaborado um banco de dados hidrogeológicos com o intuito de avaliarde forma preliminar o potencial hídrico subterrâneo desta área. A análise e tratamento dos dados secundáriose primários obtidos permitiu a identificação de oito sistemas aqüíferos. O sistema do Grupo Itabira, ondese encontram as formações ferríferas da Formação Cauê, é o de maior potencial. Os sistemas em rochasdo embasamento cristalino destacam-se pelo maior número de poços tubulares cadastrados. Análises deparâmetros físico-químicos e de elementos inorgânicos na água subterrânea revelaram que a maioria apresentaconcentrações inferiores aos máximos permitidos pela legislação para água potável. Contudo, como o sistemade proteção sanitária dos poços se mostrou muitas vezes inadequado, é possível que haja alguma contaminaçãopor elementos ou compostos não analisados e que deverão ser futuramente investigados.Palavras-chaves: hidrogeologia, sistemas aqüíferos, hidroquímica, Ouro Preto. ABSTRACT: The knowledge of physical and chemical conditions of groundwater in the city of Ouro Preto is still deficient.Therefore, in this paper a hydrogeological database was made, in order to estimate the groundwater potentialof the area. The analysis and processing of secondary and primary data allowed the identification of eightaquifer systems. The aquifer system of the Itabira Group, with iron formations, was considered the best,while the crystalline basement system has the highest number of registered wells. Analysis of physicalchemicalparameters and inorganic elements in groundwater has revealed that most concentrations are belowthe maximum allowed by law for drinking water. owever, the sanitary protection of the wells is frequentlyinadequate and there are ossibly other contaminants, which should be further investigated.Keywords: hydrogeology, aquifer systems, hydrochemistry, Ouro Preto.

Using New Technology Material to Make Inclusion Sheet

2021 ◽  
Vol 1026 ◽  
pp. 183-188
Author(s):  
Liu Yang ◽  
Liu Shuang
Keyword(s):  
Low Temperature ◽  
Fluid Inclusion ◽  
Ph Value ◽  
New Technology ◽  
Temperature Environment ◽  
Chemical Conditions ◽  
Slice Method ◽  
Physical And Chemical ◽  
Technological Methods ◽  
Made In

The research of fluid inclusion thin section is to understand the physical and chemical conditions (such as temperature, pressure, density, pH value, composition, etc.) of minerals, rocks and deposits, and to solve the genesis of rocks and deposits; in the process of production, gas inclusions or liquid inclusions should be produced at low temperature, otherwise the inclusions will be destroyed, especially quartz sandstone, weathered rock, mudstone and other minerals Therefore, when the film is made in a humid temperature environment, it is very easy to be deliquesced, especially for the rocks with developed cleavage and many cracks, after rough grinding after polishing, it is easy to produce warping edge, warping angle, bubbles, etc., thus causing the sample piece to deteriorate after polishing; therefore, a large number of pockmarks and cracks will be produced under the microscope. In this paper, starting from the applicable conditions of materials and technological methods, the practical problems of making materials and technological process in rock slice method are introduced in detail. Keywords Inclusion,Manufacturing, Grinding,Polishing,Filming

Production Systems and Growing Environments Had Stronger Effects than Grafting on the Nutritional Quality of Tomato

2021 ◽  
Author(s):  
Madhumita Joshi ◽  
Daniel Leskovar ◽  
Desire Djidonou ◽  
John Jifon ◽  
Carlos Avila ◽  
...  
Keyword(s):  
Nutritional Quality ◽  
Production Systems

scholarly journals Nutritional Quality of Beef Produced in Chile from Different Production Systems

2012 ◽  
Vol 72 (1) ◽  
pp. 80-86 ◽  
Author(s):  
Rodrigo Morales ◽  
Carolina Folch ◽  
Sergio Iraira ◽  
Nolberto Teuber ◽  
Carolina E Realini
Keyword(s):  
Nutritional Quality ◽  
Production Systems

scholarly journals Relationship between milk production system and milk traits and somatic cell counts in Brazilian Murrah buffaloes: a multivariate analysis

2019 ◽  
Vol 42 ◽  
pp. e46522
Author(s):  
Severino Benone Paes Barbosa ◽  
Elisa Cristina Modesto ◽  
Fabiana de Araújo Lopes ◽  
Elizabete Cristina da Silva ◽  
Atzel Cândido Acosta Abad
Keyword(s):  
Multivariate Analysis ◽  
Somatic Cell ◽  
Milk Production ◽  
Nutritional Quality ◽  
Production Systems ◽  
Total Variance ◽  
Herd Health ◽  
Total Solids ◽  
Cell Counts

The purpose of this study was to evaluate the monthly milk production and quality of buffaloes from two milk production systems in the Brazilian northeast using the multivariate analysis: principal component analysis (PCA). A total of 2,506 individual milk recordings were performed in two production systems, containing information on milk production (kg day-1), fat, protein, lactose and total solids counts and somatic cell count (SCC). There were positive correlations between the fat content and the contents of total solids (TS) and protein, and of TS and protein. From the PCA, two main components (PC1 and PC2) were identified, explaining 67.71% of the total variation. The fat, protein, lactose and ST level, represented by PC1, explain 46.18% of the total variance, and were an indicator of milk nutritional quality. The CP2, composed of milk production, SCC and production systems, explains 21.53% of the total variance, and was indicative of herd health. PCA results may be useful in dairy buffalo breeding programs, and a reduced number of variables are necessary to assess the nutritional quality of milk and herd health.

scholarly journals Measuring nutritional quality of agricultural production systems: Application to fish production

2018 ◽  
Vol 16 ◽  
pp. 54-64 ◽  
Author(s):  
Jessica R. Bogard ◽  
Geoffrey C. Marks ◽  
Stephen Wood ◽  
Shakuntala H. Thilsted
Keyword(s):  
Agricultural Production ◽  
Nutritional Quality ◽  
Production Systems ◽  
Fish Production ◽  
Agricultural Production Systems

scholarly journals Development and Characterization of Crackers Substitution of Wheat Flour With Jellyfish

2021 ◽  
Vol 8 ◽  
Author(s):  
Suchada Maisont ◽  
Wisutthana Samutsri ◽  
Wuttichai Phae-ngam ◽  
Pichet Limsuwan
Keyword(s):  
Wheat Flour ◽  
Storage Time ◽  
Thiobarbituric Acid ◽  
Physicochemical Characteristics ◽  
Chemical Conditions ◽  
Tbars Values ◽  
Physical And Chemical ◽  
Different Levels

The objective of this study was to investigate the possibility of using jellyfish (Lobonema smithii) for the production of nutritionally improved crackers. In this study, ground jellyfish were incorporated into different levels (20, 30, and 40%) to replace wheat flour in cracker formula. Physicochemical characteristics (linear expansion, hardness, and color) and sensory quality of the developed crackers were examined and compared with control crackers. The crackers with jellyfish were found significantly darker, with more brittleness, and less consumer accepted than the control samples (p &lt; 0.05). Moisture content, aw, and thiobarbituric acid reactive substances (TBARS)-values of jellyfish crackers increased while the hardness of the jellyfish crackers decreased with increasing the storage time for both crackers stored at 35 and 45°C. The substitution of wheat flour with jellyfish led to high protein content in the crackers. The cracker with 30% of jellyfish gained characteristics of cracker, liking scores, as well as the subjective quality of the final product and had good physical and chemical conditions, being able to be consumed for 12 weeks stored at 35°C.

scholarly journals Impacts of Rice Importation on Nigeria's Economy

2018 ◽  
Vol 2 ◽  
pp. 71 ◽  
Author(s):  
Asiru Monday Abbas ◽  
Iye Gloria Agada ◽  
Olaoluwa Kolade
Keyword(s):  
Production Systems ◽  
Negative Effects ◽  
Foreign Reserves ◽  
Self Sufficiency ◽  
Timely Access ◽  
The Government ◽  
Farm Inputs ◽  
Made In

This study critically examined the negative effects of importation of rice on the Nigerian economy. The study also took a look at various import policies embarked upon by the Nigerian government as inconsistency in policy is a major hurdle to long term investment in the rice sub-sector. Nigeria spends billions of Naira on annual basis to import rice with its attendant depletion of the nation’s foreign reserves and this study analyzed that this negative trend can be reversed as there are a lot of opportunities in the rice sector that will not only help the country to achieve self-sufficiency in rice production, but also transform the country from a net importer to an exporter of rice. In order to meet local demand, right investment has to be made in production, milling and grading (especially in the production of excellent quality rice that can replace imported rice), marketing, road infrastructure etc. It is recommended that farm inputs (fertilizers, improved quality seeds, pesticides etc.) should be heavily subsidized by the government at different levels as timely access to inputs can significantly raise the level of production and also lead to an increase in the quantity and quality of yield. Also, there has to be a consistent and business friendly government policy in the rice sub-sector in order to encourage investors. Keywords: Consumption; opportunities; policies; production; systems; tariff

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