Influence of Rumen Undegradable Protein Levels on Feed Intake and Milk Production of Dairy Cows

Robinson, Paul H.; McQueen, R. E.; Burgess, P. L.

doi:10.3168/jds.s0022-0302(91)78324-0

Cited by 34 publications

(9 citation statements)

References 5 publications

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“…To further research the effect of replacement rate on milk yield, the authors regrouped the studies. The basal diets in those studies were composed principally of corn silage (Cozzi & Polan, 1994;McCormick et al, 2001), oat pasture (McCormick et al, 2001) and alfalfa silage (Robinson et al, 1991). Figure 1 shows no relationship between replacement rate and the change in milk production.…”

Section: Discussionmentioning

confidence: 99%

Effects of replacing soybean meal with corn gluten meal on milk production and nitrogen efficiency in Holstein cows

Imran¹,

Shahid²,

Pasha³

et al. 2018

SA J. An. Sci.

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The objective of the current study was to determine the effects of partial replacement of soybean meal with corn gluten meal on lactation performance and nitrogen (N) efficiency in lactating Holstein dairy cows. Nine multiparous lactating cows in mid lactation (109 ± 19 days in milk) received three treatments in a 3 × 3 Latin square design for 21 days. The three treatments consisted of i) Ctrl: low protein diet with 15.2% crude protein (CP); ii) SBM: soybean meal-based diet with 18.4% CP; and iii) CGM: soybean meal partially replaced with corn gluten meal with 18.3% CP. Two pre-planned orthogonal contrasts were used to compare the treatments: i) Prot compared Ctrl and average of SBM and CGM to see the effect of increasing protein supplies; and ii) Rep compared SBM and CGM treatments. Increasing CP supplies did not affect dry matter intake, whereas it significantly increased milk protein and lactose yield by 3.6% and 3.3%, respectively. Increasing CP supplies decreased milk nitrogen efficiency (MNE) by 10.9%. The milk yield, milk component yield, milk composition and feed efficiency were similar in the SBM and CGM treatments. Similarly, no difference was observed on dry matter, N and net energy for lactation (NE L) intakes between SBM and CGM treatments. However, MNE significantly decreased by 4.8% in the CGM treatment compared with SBM. The results indicated that soybean meal could be partially replaced with corn gluten meal without negatively affecting productive performance.

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Section: Discussionmentioning

confidence: 99%

Effects of replacing soybean meal with corn gluten meal on milk production and nitrogen efficiency in Holstein cows

Imran¹,

Shahid²,

Pasha³

et al. 2018

SA J. An. Sci.

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“…Nianogo et al (1991) reported that lactose content of milk decreased from 4.9% to 4.7% against the control in cows fed diets containing high soluble proteins, and increased from 4.9% to 5.0% against the control in cows fed diets containing less soluble proteins and however, lactose content of milk was not affected by fat addition. Robinson et al (1991) with Maiga and Schingoethe (1997) reported that lactose content of milk was not affected by CP degradabilities of the ration or by by-pass protein content of the ration.…”

Section: Resultsmentioning

confidence: 99%

Possibilities of using dairy compounds exposed to different treatments in dairy cow feeding

Sariçiçek¹

2004

CZECH J ANIM SCI

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This study was conducted to investigate the effects of untreated dairy compound feeds; DCF (control) and DCFs subjected to 2% fat (F); 2.5% tannic acid (TA); 2% fat + 2.5% tannic acid (F + TA) on the milk yield and composition. In the study, 4 cows of Jersey breed were used and 4 × 4 Latin square experimental design was applied. Normal milk yield, 4% fat corrected milk yield (FCM), dry ma�er content of milk, non-fat solids content of milk, CP content of milk, fat content of milk, lactose content of milk, crude ash content of milk, daily DM consumption of cows, feed efficiency according to normal milk yield of cows, feed efficiency according to the FCM of cows were 11.96, 12.14, 10.89 and 11.94 kg/day (P < 0.05); 14.16, 14.50, 13.06 and 13.70 kg/day (P < 0.05); 13.37, 13.34, 13.54 and 13.41% (P > 0.05); 8.12, 8.00, 8.35 and 8.19% (P > 0.05); 3.67, 3.70, 3.87 and 3.63% (P < 0.05); 5.25, 5.34, 5.19 and 5.22% (P > 0.05); 4.97, 4.812, 5.01 and 5.042% (P > 0.05); 0.75, 0.73, 0.74 and 0.73% (P > 0.05); 15.97, 15.84, 15.94 and 15.59 kg/day (P > 0.05); 1.34, 1.31, 1.46 and 1.31 kg feed DM/kg milk (P > 0.05); 1.13, 1.09, 1.22 and 1.14 kg feed DM/kg milk (P > 0.05), respectively. According to the results it can be stated that 2.5TA and 2F treatments had positive effects on FCM milk yield and milk protein yield.

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“…Tabela 6 -Valores médios de produção de leite não-corrigida (PL) e corrigida para 3,5% de gordura (PLG), eficiência de utilização de MS (kg leite/kg matéria seca consumida), eficiência de utilização de N (kg N-leite/kg N-ingerido), teores e quantidades de gordura (G) e proteína bruta (PB) do leite, em função dos níveis de proteína bruta no concentrado, coeficientes de variação (CV), probabilidades (P) para os efeitos linear (L) e quadrático (Q) e equações de regressão , 1996;Armentano et al, 1993;Robinson et al, 1991;Robinson & Kennelly, 1988). Para a produção de leite corrigida para 3,5% de gordura, os aumentos foram de 9,74%, ou 1,84 kg/dia, e as produções de gordura e proteína apresentaram incrementos de 0,08 kg/dia e 0,04 kg/dia, respectivamente, entre os níveis 20 e 23% de PB na MN do concentrado.…”

Section: Cp (G/day)unclassified

“…De acordo com Robinson et al (1991), quando as taxas de ingestão de MS são altas, vacas lactantes podem consumir dietas com menores concentrações de proteína bruta (PB) e ainda assim manter os requerimentos para proteína metabolizável, tornandose desnecessário o fornecimento de proteína não-degradável no rúmen (PNDR) na dieta. Além disso, quando há maior ingestão de MS, a taxa de passagem pode aumentar, resultando aumento do suprimento de PNDR em razão do menor tempo disponível para degradação no rúmen.…”

Section: Introductionunclassified

Consumo, digestibilidade aparente total, produção e composição do leite em vacas no terço médio da lactação alimentadas com níveis crescentes de proteína bruta no concentrado

Pereira

Filho²,

Valadares³

et al. 2005

R. Bras. Zootec.

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RESUMO -Avaliaram-se os consumos, as digestibilidades aparentes dos nutrientes e a produção e composição do leite de vacas no terço médio da lactação recebendo dietas contendo níveis crescentes de proteína bruta (PB) no concentrado (20; 23; 26 e 29% da matéria natural -MN). Foram utilizadas 12 vacas em lactação da raça Holandesa, puras e mestiças, distribuídas em três quadrados latinos (4x4). Foram utilizados quatro períodos de 15 dias cada, sendo uma semana considerada de adaptação. A dieta consistiu de 70% de silagem de milho como volumoso e 30% de concentrado. Os consumos e as digestibilidades da matéria seca (MS), matéria orgânica (MO), extrato etéreo (EE), carboidratos totais (CHOT), fibra em detergente neutro (FDN) e carboidratos não-fibrosos (CNF) e o consumo de nutrientes digestíveis totais (NDT) não foram alterados, enquanto o consumo e a digestibilidade de PB aumentaram em função dos níveis de PB no concentrado. A produção de leite (PL) corrigida para 3,5% de gordura, as quantidades de gordura e proteína no leite aumentaram linearmente com o aumento dos níveis de PB no concentrado. No entanto, a PL de 19,21 kg/dia e a PL corrigida para 3,5% de gordura de 20,74 kg/ dia para o nível de 23% de PB na MN do concentrado, foram muito próximas daquelas obtidas nos níveis de 26 e 29% de PB no concentrado. O concentrado contendo 23% de PB na MN utilizado na proporção de 30%, que correspondeu a 12,3% de PB na MS da dieta total, proporcionou melhor eficiência na produção de leite em vacas produzindo em média 20 kg/dia de leite no terço médio da lactação e alimentadas com silagem de milho na proporção de 70% na MS da dieta total.Palavras-chave: composição química, degradabilidade ruminal, eficiência de utilização de compostos nitrogenados, farelo de soja, proteína na dieta, silagem de milho Intake, Total Apparent Digestibility, Milk Production and Composition in Mid Lactation Cows Fed with Increasing Levels of Crude Protein in the ConcentrateABSTRACT -Intake, total apparent digestibility of nutrients and milk production and composition were evaluated in mid lactation cows fed with increasing levels of crude protein (CP) in the concentrate (20, 23, 26 and 29% natural matter-NM). Twelve Holstein crossbred lactating cows were assigned to three latin square (4x4), in four periods of 15 days each (one week of adaptation). The feeding consisted of 70% of corn silage and 30% of concentrate. Intakes and digestibilities of dry matter (DM), organic matter (OM), ether extract (EE), total carbohydrates (TCHO), neutral detergent fiber (NDF) and non-fiber carbohydrates (NFC) and total digestible nutrients (TDN) were not altered, while CP intake and digestibility increased in response to CP levels in the concentrate. Corrected milk production (MP) for 3.5% fat, fat and protein concentrations in milk increased linearly with an increasing of CP levels in the concentrate. Nonetheless, for CP levels of 23% in the natural matter of the concentrate, MP of 19.21 kg/day and corrected MP for 3.5% fat of 20.74 kg/day were very close to the...

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Influence of Rumen Undegradable Protein Levels on Feed Intake and Milk Production of Dairy Cows

Cited by 34 publications

References 5 publications

Effects of replacing soybean meal with corn gluten meal on milk production and nitrogen efficiency in Holstein cows

Effects of replacing soybean meal with corn gluten meal on milk production and nitrogen efficiency in Holstein cows

Possibilities of using dairy compounds exposed to different treatments in dairy cow feeding

Consumo, digestibilidade aparente total, produção e composição do leite em vacas no terço médio da lactação alimentadas com níveis crescentes de proteína bruta no concentrado

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