Torta de girassol em suplementos múltiplos para bovinos em pastejo no período seco do ano: parâmetros nutricionais

Mesacasa, Allan Cristian; Zervoudakis, Joanis Tilemahos; Hatamoto-Zervoudakis, Luciana Keiko; Cabral, Luciano da Silva; Abreu, Joadil Gonçalves de; Silva-Marques, Renata Pereira da; Alonso, Marcella Katherine; Silva, Rafael Gonçalves Ferrato da; Soares, Juliane Quenoizoré

doi:10.5433/1679-0359.2015v36n3p1559

Cited by 6 publications

(4 citation statements)

References 13 publications

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“…Pastures were considered regular in most farms, 11 (50.00%) and 61 (78.21%) in high-and lowproduction clusters, respectively (Table 3). However, it is important to point out that animal performance may be suboptimal in forage-based cattle feeding systems (Mesacasa et al, 2015). Grazing animals are known to be selective (Hodgson & Brookes, 1999).…”

Section: Resultsmentioning

confidence: 99%

Dairy herd production aspects of family farms in Western Amazon, Brazil

Reis

Lopes

Lima

et al. 2020

Semina: Ciênc. Agrár.

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This study aimed to evaluate the production parameters of herds in 100 dairy family farms in the mesoregion of the Acre Valley, in Western Amazon, Brazil. To this end, the farms were divided into two levels of milk production. Data were collected from March to June 2016, using a 248-question semi-structured form and on-site observations. The information was recorded in SPSS® spreadsheets. Dairy farmers were divided into two clusters known as "high production cluster" (1,755.65 L ha-1 yr-1) and "low production cluster" (492.75 L ha-1 yr-1), using the K-means non-hierarchical method. Descriptive statistics was used and, with the aid of the multivariate cluster analysis, cattle ranchers were divided into the two clusters (high and low production). The results showed that the high-production cluster had larger total milk production (L milk cow-1 day-1) and family income within smaller areas and using less workforce. The farmers in this group also used more ear tags for cattle identification and more technologies such as electric fence and artificial insemination at a fixed time. We concluded that family farms should improve their management and receive technical assistance to strengthen their weaknesses in dairy-cow health and reproduction systems. Moreover, milk yield in these dairy farms should be improved to increase profitability of farmers.

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Section: Resultsmentioning

confidence: 99%

Dairy herd production aspects of family farms in Western Amazon, Brazil

Reis

Lopes

Lima

et al. 2020

Semina: Ciênc. Agrár.

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“…When assessed in relation to time after feeding, the lowest pH value (6.21) of ruminal fluid, observed two hours postprandial, may be due to the fermentative effect of food offered, with a tendency to increase up to 10 h of measurements, when fermentation product concentrations are lower. Mesacasa et al (2015) did not observe a significant difference in pH values of ruminal fluid after feeding ruminants with sunflower cake.…”

Section: Ruminal Parametersmentioning

confidence: 91%

“…Nitrogen supply increases fiber digestion by improving microbial efficiency from substrate addition to ruminal flora (LIMA et al, 2013). Mesacasa et al (2015) observed lower N-NH 3 concentrations in the ruminal fluid by including sunflower cake in the diet, which is due to the highest coproduct indigestible fraction.…”

Section: Ruminal Parametersmentioning

confidence: 94%

Fermentation kinetics and ruminal parameters of animals fed diets containing Brazil nut cake inclusion levels

Budel¹,

Ramos²,

Araújo³

et al. 2017

SCA

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The inclusion effect of 0 (control), 15, 30, 45, 60, and 100% dry matter (DM) of Brazil nut (Bertholletia excelsa Bonpl.) cake (BNC) aiming at replacing corn silage was assessed on fermentation kinetics and effective degradability (ED) by means of in vitro gas production at 3, 6, 9, 12, 24, 48, 72 and 96 h. A randomized block design was used with six treatments, three blocks, and two replications per block. France's model was fit to the data. An in vivo experiment, conducted in fistulated ovine, assessed the effects of BNC inclusion levels of 0, 15, 30, and 45% DM replacing corn silage on ruminal parameters. Ruminal fluid samples were collected postprandial at 8, 10, 12, 14, 16, and 18 h for determining the concentrations of short-chain fatty acids (SCFA), pH, and N-NH 3 . A completely randomized design with repeated measures in time was used, with four treatments and three replications. Results of acetate, propionate, butyrate, acetate to propionate ratio, pH, and NH 3 were submitted to analysis of variance and regression (linear and quadratic) considering treatment, time and interaction of both. In addition, the F test with a 5% (P < 0.05) significance level was applied to the data. Fermentation kinetics pattern and ED presented a linear decreasing (P < 0.05), which means a decrease in total gas production at each coproduct inclusion level. No interaction effect between treatment and time was observed for total SCFA (P > 0.40), acetic acid (P > 0.41), propionic acid (P > 0.85), butyric acid (P > 0.62) and pH (P > 0.57). BNC replacements of 0, 15, 30 and 45% did not change (P > 0.05) total SCFA concentration, as well as acetic acid concentration in ovine. When including 45% DM of BNC, concentrations (mMol/100 mL) of propionic (P < 0.001) and butyric (P < 0.022) acids was reduced in the ruminal fluid. The highest concentrations at measurement times were observed 4 hours after feeding. The pH values presented a quadratic effect on both inclusion (P < 0.001) and time (P < 0.001). An interaction was observed between treatment and time for N-NH 3 concentration (mg/ml) (P < 0.001) and acetic to propionic acids ratio (P < 0.014). Fermentation kinetics was negatively affected by Brazil nut cake inclusion to corn silage-based diet. Therefore, the use of this coproduct is recommended associated with non-structural carbohydrate sources. ResumoAvaliou-se o efeito da inclusão da torta da amêndoa de castanha-do-pará (Bertholletia excelsa Bonpl.) -(TAC) nas proporções 0 (controle), 15, 30, 45, 60 e 100% da matéria seca (MS) em substituição à silagem de milho (SM), sobre a cinética de fermentação e a degradabilidade efetiva (DE), através da produção de gases in vitro, nos tempos 3, 6, 9, 12, 24, 48, 72 e 96 horas. Utilizou-se delineamento em blocos casualizado, com seis tratamentos, três blocos e duas repetições por bloco. O modelo de France foi ajustado aos dados. Ensaio in vivo, conduzido em ovinos fistulados, avaliou-se a influência da TAC nos níveis 0, 15, 30 e 45% (MS), em substituição à silagem de milho, sobre ...

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“…Pastures were considered to be of regular quality in 72% of the dairy farms (Table 5). In cattle production systems based only on the use of forage as a source of nutrients, animal performance may be lower than desired (MESACASA et al, 2015). In case of pastures considered to be of regular quality and quantity, as in this study, the diet may be influenced, since grazing animals are selective (HODGSON; BROOKES, 1999), affecting their voluntary consumption and, consequently, the consumption of dry matter.…”

Section: The Use Of Electrified Fencing Occurred In 46%mentioning

confidence: 92%

Caracterização de propriedades leiteiras de agricultura familiar na amazônia ocidental

Reis

Lopes

Demeu

et al. 2018

SCA

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More than half of the milk in Brazil comes from family-owned dairy farms, which account for 84.4% of all dairy farms. Despite this, little is known about family-owned dairy farms, especially those in the western Amazon. As such, the objective of this study was to analyze and characterize the production, sanitary conditions, reproductive rates, and milk quantities produced on 100 family dairy farms in Vale do Acre, in the western Amazon. The data were collected from March to June 2016, using a semi-structured questionnaire containing 549 questions. The answers given by producers, as well as local observations were registered in SPSS® spreadsheets, and descriptive statistics were used to summarize the data. Results indicated low rates of productivity, low total milk production, and low quantities of milk/cow/day. The data also revealed sanitary and productive problems such as inadequate herd composition, lack of grouping of lactating cows, and short duration of lactation. In addition, not all heifers were immunized against brucellosis, and there was often an absence of water troughs. We concluded that it is necessary to improve the management of family-owned farms, and take technical assistance measures to correct weak points in dairy cow health and reproduction. Moreover, it is essential to improve productivity to raise the profitability of rural dairy farms.

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Torta de girassol em suplementos múltiplos para bovinos em pastejo no período seco do ano: parâmetros nutricionais

Cited by 6 publications

References 13 publications

Dairy herd production aspects of family farms in Western Amazon, Brazil

Dairy herd production aspects of family farms in Western Amazon, Brazil

Fermentation kinetics and ruminal parameters of animals fed diets containing Brazil nut cake inclusion levels

Caracterização de propriedades leiteiras de agricultura familiar na amazônia ocidental

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