2000
DOI: 10.3168/jds.s0022-0302(00)75187-3
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Performance of Dairy Cattle Fed Citrus Pulp or Corn Products as Sources of Neutral Detergent-Soluble Carbohydrates

Abstract: The effects of modifying the dietary profile of neutral detergent-soluble carbohydrates (NDSC) on milk production and rumen fermentation were determined. Corn silage and alfalfa hay-based diets were formulated to contain 40% calculated NDSC supplied primarily by dried citrus pulp as a source of neutral detergent-soluble fiber (NDSF), or corn products as sources of starch. Diets were compared within cow with reversal experiments with two periods. In experiment 1, 11 multiparous Holstein cows including three rum… Show more

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Cited by 105 publications
(116 citation statements)
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“…In the literature, the coefficients from fitting the polynomial equation were sometimes directly used for statistical comparisons of the values composing pH graphics (Leiva et al, 2000). On the contrary, the rates of pH change and t min are seldom used in the literature and, to our knowledge, no attempt was made to use them in analysis of data from the literature.…”
Section: Resultsmentioning
confidence: 99%
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“…In the literature, the coefficients from fitting the polynomial equation were sometimes directly used for statistical comparisons of the values composing pH graphics (Leiva et al, 2000). On the contrary, the rates of pH change and t min are seldom used in the literature and, to our knowledge, no attempt was made to use them in analysis of data from the literature.…”
Section: Resultsmentioning
confidence: 99%
“…The concepts of pH decrease and recovery were used, without being quantified, by several authors (Malestein et al, 1984;Pitt and Pell, 1997;Leiva et al, 2000), some of them suggesting possible relationships with ruminal processes. Sometimes, the time when pH reaches its minimum (t min ) is briefly used in text commentaries (Khalili and Huhtanen, 1991;Krause et al, 1998).…”
Section: Resultsmentioning
confidence: 99%
“…Broderick et al (2002) também observaram queda na produção de leite de 35,0 para 32,0kg, associada à queda simultânea no consumo, quando dietas com 19,1% ou 13,4% de polpa cítrica na MS substituíram o mesmo teor dietético de silagem de grão úmido de milho, partindo de dietas com 38,5% ou 26,9% de grãos, respectivamente. Leiva et al (2000) observaram queda de 3,9kg na produção diária de leite de vacas que produziam 31,8kg e alimentadas em grupo, quando uma dieta com 20,5% de polpa cítrica e 9,2% de milho maduro moído substituiu outra com 9,6% de polpa e 19,5% de milho. O consumo do grupo de vacas foi de 18,9kg e 19,5kg nas dietas com alta e baixa polpa cítrica, respectivamente.…”
Section: Resultsunclassified
“…1). A substituição de milho por polpa cítrica aumentou a porcentagem de gordura no leite em três experimentos (Van Horn et al, 1975;Leiva et al, 2000, Costa et al, 2005, mas não a influenciou em cinco experimentos (Solomon et al, 2000;Broderick et al, 2002;Scoton, 2003;Martinez, 2004;Tavares et al, 2005 Neste experimento, a não resposta no teor de gordura pode ser atribuído ao fato de a substituição dietética de milho por polpa ter sido realizada em dietas não deficientes em fibra efetiva. Resposta na gordura no leite à inclusão de subprodutos fibrosos à dieta é normalmente detectável quando estes substituem milho em dietas deficientes em FDN oriundas de forragens, sabidamente acidogênicas (Armentano e Pereira, 1997).…”
Section: Resultsunclassified
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