Efeito de fontes e formas de processamento do amido sobre o desempenho e o metabolismo do nitrogênio em vacas Holandesas em lactação

Pires, Alexandre Vaz; Susin, Ivanete; Santos, Flávio Augusto Portela; Mendes, Clayton Quirino; Oliveira, Reinaldo Cunha de; Fernandes, Juliano José de Resende; Simas, J M C

doi:10.1590/s1516-35982008000800017

Cited by 7 publications

(12 citation statements)

References 19 publications

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“…Plasma glucose levels showed a quadratic effect as the corn was replaced by WCSEd (Fig. 1a), differing from the results observed by Pires et al (2008), who found no significant changes in plasma glucose concentrations in animals fed with cassava chips as a source of starch. The glucose levels stayed within the appropriate levels for cattle, which can range from 45 to 75 mg dL -1 (Fernandes et al 2012).…”

contrasting

confidence: 92%

Use of dried waste of cassava starch extraction for feeding lactating cows

Fernandes

Zambom

Castagnara

et al. 2015

An. Acad. Bras. Ciênc.

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The aim of this study was to determine the best level of utilization of dried waste of cassava starch extraction (WCSEd) as a substitute for corn for lactating cows. Four lactating cows were fed diets with increasing levels (0%, 33%, 66% and 100%) of WCSEd as a substitute for corn. The intake and digestibility of dry matter and nutrients, milk production and composition, blood parameters of glucose and urea and microbial synthesis of the diets were evaluated. There was a reduction in dry matter intake, organic matter, ether extract and total carbohydrate, and increased intake of acid detergent fiber. Nutrient digestibility was not affected while the synthesis of microbial protein increased. These changes resulted in reduced milk production, without altering the efficiency of production or the constituents of milk, with a decreasing effect on daily production of lactose, solids and minerals. Metabolic parameters, glucose and urea nitrogen in plasma, remained within appropriate levels. The dried residue from the extraction of cassava starch can be used as feed for dairy cows to replace up to 100% of the corn ration. However, its use promotes a reduction in intake of dry matter and nutrients as well as a reduction in the production of milk, with impacts on the profitability of the product.

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contrasting

confidence: 92%

Use of dried waste of cassava starch extraction for feeding lactating cows

Fernandes

Zambom

Castagnara

et al. 2015

An. Acad. Bras. Ciênc.

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“…According to Santos et al (1998), as the degradability of the starch increases, there is an increase in protein content in the milk, perhaps due to the increase of microbial synthesis, leading to an increase in the metabolizable protein flow to the intestine, improving the profile of essential amino acids. These results disagree with those reported by Pires et al (2008), they found that the conversion efficiency from the feed into protein in the milk was lower for the cassava starch, another product with a similar composition to SRECS.…”

Section: Resultscontrasting

confidence: 99%

“…This is similar to a report by Pires et al (2008), who found no difference in plasma glucose concentrations in animals fed cassava starch as a source of starch. The plasma concentration of urea did not differ (P>0.05) between treatments, showing that the efficiency of protein utilization was not influenced by the substitution of corn by SRECS.…”

Section: Resultssupporting

confidence: 92%

“…According to Pires et al (2008), the use of alternative feed sources, such as agro-industrial residues, can contribute to reducing the production costs, as well as the possible environmental contamination these agro-industrial residues can cause. In this context, the cassava (Manihot esculenta Crantz), and its numerous byproducts resulting from industrial processing, stand out as cheaper energy substitutes for the ration formulation for ruminants, as they are a viable alternative because they have nutritional value similar to corn in the light of the high levels of non-structural carbohydrates (RAMALHO et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

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Silage of residue from the extraction of cassava starch in diets from lactating holstein cows

et al. 2015

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The objective of evaluating the intake and digestibility of nutrients, milk production, production efficiency and composition, and blood parameters of Holstein cows fed silage of the residue from the extraction of cassava starch (SRECS), replacing 0%, 25%, 50%, 75%, or 100% of the corn feed. Cows with average production of 35 kg of milk a day were assigned in a 5x5 Latin square design, and for the 21 days trial period, they were housed in stalls and fed individually to control the dietary food, stool samples were performed to estimate the digestibility of nutrients. Milking were held twice a day, measuring the production and analysis of milk composition in each experimental period. Blood collections were performed at the end of each period to evaluate the metabolic condition of the cows. The data were analyzed using variance analysis and polynomial regression. The replacement of corn by SRECS did not affect the intake of dry matter (DM) or total carbohydrates (TC). There was a linear decrease in the intake of ether extract (EE), and a linear increase in the intake of neutral (NDF) and acid detergent fiber (ADF), indicating a quadratic regression with the intake of crude protein (CP). The use SRECS presented growing effect digestibility of the ADF, showing a positive linear effect. The total digestible nutrients (TDN) did not differ between the diets and had an average of 66.03%. There was a trend of reduction (10%) in the production, with consequent increase in delight in the concentration of its components. There was no change in the measured metabolites. The use of silage of the residue from the extraction of cassava starch to replace the ground corn on feed, negatively affects the nutrient intake without changing the efficiency of milk production, milk composition, in the same way as blood parameters of lactating cows. Key words: Agro-industrial residue, blood parameters, cassava byproduct, dairy cattle, milk production, milk quality ResumoObjetivou-se avaliar o consumo e a digestibilidade dos nutrientes, produção, eficiência de produção e composição do leite e parâmetros sanguíneos de vacas da raça Holandesa alimentadas com silagem do resíduo da extração da amido de mandioca (SREAM), substituindo 0%, 25%, 50%, 75% ou 100% do milho da ração. As vacas com produção média de 35 kg de leite por dia, foram distribuídos em um delineamento em quadrado latino 5x5, com períodos de 21 dias, foram alojados em baias e alimentadas individualmente, para controlar a ingestão de alimentos, coletas de fezes foram realizadas para estimar a digestibilidade dos nutrientes. As ordenhas foram realizadas duas vezes ao dia, mensurando-se a produção e analisando a composição do leite em cada período experimental. Coletas de sangue foram realizadas ao final de cada período, para avaliar a condição metabólica das vacas. Os dados foram analisados por meio de análise de variância e de regressão polinomial. A substituição do milho por SREAM não afetou o consumo de MS e de carboidratos totais (CT). Houve redução linear na ingestão ...

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“…Menor teor de ureia no plasma indica menores perdas de proteína, ingrediente de maior custo na dieta de bovinos. Ao contrário do atual estudo, Pires et al (2008) verificaram alteração significativa para o teor de ureia plasmática (médias de 21,9; 23,6; 21,3; 21,4 e 27,6mg/dL) em vacas leiteiras alimentadas com milho moí-do grosso, milho moído fino, milho floculado 310g/L, milho floculado 360g/L e raspa de mandioca (28,4% da dieta total), respectivamente.…”

Section: Discussionunclassified

Parâmetros ruminais e balanço de nitrogênio em bovinos alimentados com silagem da raiz de mandioca

Vieira

Azevêdo

Silva³

et al. 2017

Pesq. Vet. Bras.

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RESUMO.-Avaliou-se o efeito da inclusão da silagem da raiz de mandioca sobre os parâmetros ruminais e o balanço de compostos nitrogenados em bovinos de origem leiteira. Utilizou-se cinco animais, canulados no rúmen, não lactantes e com peso corporal médio de 389 kg. Os animais foram distribuídos em um quadrado latino cinco x cinco, sendo cinco dietas com níveis de inclusão (0,00; 3,62; 7,23; 10,84 The effect of inclusion of cassava root silage on ruminal parameters and nitrogenous compounds in dairy cattle was evaluated. Five cattle cannulated in the rumen and with average body weight of 389 kg were distributed into a Latin square 5x5, with five levels of inclusion (0.00, 3.62, 7.23, 10.84 and 14.54% of the diet dry matter) of cassava root silage and five periods (10 days for adaptation and five days for data collection). The nitrogen excretion in urine and feces were not affected (P>0.05) by inclusion of cassava root silage in the diet. The total nitrogen intake (CNT) and nitrogen balance (NB) showed an increasing quadratic and linear behavior, respectively. The lowest CNT (142.14g/day) was obtained with the inclusion of 5.82% silage cassava root. The concentration of urea (U) and urea nitrogen (UN) in plasma and urine did not change (P>0.05). There was a quadratic behavior (P<0.05) in excreta of U and NU in the urine, with minimum point of 131.13 and 61.20g/day respectively, at the level of 7.27% inclusion of the cassava root silage. No interaction (P>0.05) was between the levels of cassava root silage and the collection time of rumen contents for the short-chain fatty acids, pH and ammonia nitrogen (NH3-N). Only the N-NH 3 protein showed quadratic behavior, according to the inclusion levels, with the minimum point (12.62mg/100ml of rumen contents) at the level of 5.98%. The level of 7.23% of cassava root silage in the diet was more efficient with the use of nitrogen compounds. The diets contribute similarly to the production of short chain fatty acids, without disturbing the rumen pH.

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Efeito de fontes e formas de processamento do amido sobre o desempenho e o metabolismo do nitrogênio em vacas Holandesas em lactação

Cited by 7 publications

References 19 publications

Use of dried waste of cassava starch extraction for feeding lactating cows

Use of dried waste of cassava starch extraction for feeding lactating cows

Silage of residue from the extraction of cassava starch in diets from lactating holstein cows

Parâmetros ruminais e balanço de nitrogênio em bovinos alimentados com silagem da raiz de mandioca

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