Influence of dry matter intake on faecal phosphorus losses in dairy cows fed rations low in phosphorus

Spiekers, H.; Brintrup, R.; Balmelli, M.; Pfeffer, E.

doi:10.1111/j.1439-0396.1993.tb00788.x

Cited by 45 publications

(56 citation statements)

References 7 publications

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“…In the present study, an average of 0.093% P of milk was achieved, ranging from 0.084 to 0.102%. The amount of P excreted in urine was negligible (67.4 vs. 85.6 ± 5.00 mg d -1 , 0.35% vs. 0.42% P diet, respectively), in agreement with previous studies (e.g., Spiekers et al 1993;Valk et al 2002). Phosphorus retention was not different (P > 0.05) between treatments (Table 5).…”

Section: Resultssupporting

confidence: 80%

“…The 0.35% P diet had no effect (P > 0.05) on all digestibility coefficients except the digestibility coefficient for P, which was higher (P < 0.05) for the 0.35% P diet compared with the 0.42% P diet. The apparent digestibility of P and P balance have been calculated for dairy cows (Martz et al 1990;Spiekers et al 1993;Valk et al 2002), although methods of measurements differ among experiments. When potentially absorbable P is provided in sufficient amounts or in excess, dairy cows appear to have the ability to absorb the amount of P needed Shore et al 2005;Ekelund et al 2006).…”

Section: Resultsmentioning

confidence: 99%

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Long-term effects of feeding diets without mineral phosphorus supplementation on the performance and phosphorus excretion in high-yielding dairy cows

Odongo

McKnight²,

KoekKoek³

et al. 2007

Can. J. Anim. Sci.

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. W. 2007. Longterm effects of feeding diets without mineral phosphorus supplementation on the performance and phosphorus excretion in high-yielding dairy cows. Can. J. Anim. Sci. 87: 639-646. The objective of this study was to assess the long-term effects of feeding a diet with no mineral phosphorus (P) supplementation on performance and P excretion in high-yielding dairy cows. In exp. 1, 24 primiparous (PP) and 40 multiparous (MP) Holstein cows were allocated to one of two treatments at calving: (1) regular corn silage and alfalfa haylage based milking cow total mixed ration (TMR; 0.42% P diet) or (2) milking cow total mixed ration (TMR) without supplemental mineral P (0.35% P diet) in a completely randomized design. The trial lasted until after two lactations were completed or the cow was culled. In exp. 2, eight MP Holstein cows (108 ± 8.0 d in milk) were used to determine P digestibility and retention in a completely randomized block design. In exp. 1, the 0.35% P diet cows had lower body weight, body condition score and milk urea nitrogen and higher faecal P than the 0.42% P cows. The dry matter intake (DMI) of PP cows on the 0.35% P diet was lower than that of PP cows on the 0.42% P diet. There was no difference in the DMI of MP cows. The P intake of 0.35% P diet PP cows was 30% lower than that of 0.42% P diet PP cows. The P intake of 0.35% P diet MP cows was 20% lower than that of 0.42% P diet MP. The digestibility coefficient of P for the 0.35% P diet was higher than that for the 0.42% P diet. These results suggest that the forages used in the present study contained adequate amounts of P to sustain milk production in high-yielding MP cows. However, for PP cows some mineral P supplementation is recommended especially during early lactation.Key words: Phosphorus, environmental pollution, intensive dairy operations Odongo, N. E., McKnight, D., KoekKoek, A., Fisher, J. W., Sharpe, P., Kebreab, E., France, J. et McBride, B. W. 2007. Effets à long terme d'une alimentation sans supplément de phosphore minéral sur la performance des vaches laitières à rendement élevé et sur leur excrétion de phosphore. Can. J. Anim. Sci. 87: 639-646. L'étude devait évaluer les effets à long terme d'un régime non enrichi de phosphore minéral (P) sur la performance de grosses productrices de lait et sur l'excrétion de P par cellesci. Lors de la première expérience, les auteurs ont réparti entièrement au hasard 24 vaches Holstein primipares (PP) et 40 multipares (MP) entre deux traitements, au vêlage. Les traitements consistaient en 1) une ration mixte complète pour vache laitière à base d'ensilage ordinaire de maïs et de mi-fané de luzerne (TMR; régime à 0,42 % de P) ou 2) la TMR sans supplément de P minéral (régime à 0,35 % de P). L'essai a duré deux lactations ou jusqu'à la réforme de l'animal. Pour la deuxième expérience, huit vaches MP Holstein (108 ± 8,0 jours de lactation) réparties en bloc randomisé ont servi à déterminer la digestibilité et la réten-tion du P. Lors de la première expérience, les vaches recevant 0,35 % de...

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Section: Resultssupporting

confidence: 80%

Section: Resultsmentioning

confidence: 99%

Long-term effects of feeding diets without mineral phosphorus supplementation on the performance and phosphorus excretion in high-yielding dairy cows

Odongo

McKnight²,

KoekKoek³

et al. 2007

Can. J. Anim. Sci.

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“…This database subset comprised data from lactating dairy cows from 25 studies (Martz et al, 1990;Morse et al, 1992;Spiekers et al, 1993;Delaquis and Block, 1995;Khorasani et al, 1997;Knowlton et al, 2001Wu et al, 2001Wu et al, , 2003Knowlton and Herbein, 2002;Guyton et al, 2003;Kebreab et al, 2005;Kincaid et al, 2005;Shore et al, 2005;Wu, 2005;Ekelund et al, 2006;Kamiya et al, 2006a;Knowlton et al, 2007;Dann et al, 2008;Moreira et al, 2009;Myers and Beede, 2009;Taylor et al, 2009;Van Straalen et al, 2009;Herrera et al, 2010;Puggaard et al, 2011) and included 130 treatment means. The response variable of interest was P excretion in the feces, both in grams per day and as a fraction of P intake.…”

Section: Databasementioning

confidence: 99%

“…This database subset contained 94 treatment means from 19 studies (Martz et al, 1990;Spiekers et al, 1993;Delaquis and Block, 1995;Knowlton et al, 2001Knowlton and Herbein, 2002;Valk et al, 2002;Guyton et al, 2003;Borucki Castro et al, 2004;Kincaid et al, 2005;Peterson et al, 2005;Roche et al, 2005;Shore et al, 2005;Kamiya et al, 2006b;Odongo et al, 2007;Dann et al, 2008; Table 2.…”

Section: Databasementioning

confidence: 99%

Meta-analysis of factors that affect the utilization efficiency of phosphorus in lactating dairy cows

Klop

Ellis

Bannink

et al. 2013

Journal of Dairy Science

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A meta-analysis investigation based on literature data was conducted to estimate the effect size of nutritional and animal factors on phosphorus (P) excretion in feces and concentrations of P in milk. Two data sets were created for statistical analysis: One to derive prediction equations for P in feces (25 studies; 130 treatments) and another for P in milk (19 studies; 94 treatments). Prediction equations were derived using mixed model regression analysis with a random effect for study, and equations were evaluated based on values for Bayesian information criterion (BIC), root mean square prediction error (RMSPE), and concordance correlation coefficient (CCC) statistics. In terms of RMSPE and CCC values, fecal P excretion was best predicted by P intake, where P in feces (g/d) = −3.8(±3.45) + 0.64(±0.038) × P intake (g/d) (RMSPE: 18.3%, CCC: 0.869). However, significant effects of crude protein [g/ kg of dry matter (DM)], neutral detergent fiber (g/kg of DM), and milk yield (kg/d) on fecal P excretion were also found. Despite a lack of improvement in terms of RMSPE and CCC values, these parameters may still explain part of the variation in fecal P excretion. For milk P, expressed as a fraction of P intake, the following equation had the highest CCC and the lowest RMSPE value: P in milk as a fraction of P intake (g/g) = 0.42(±0.065) + 0.23(±0.018) × feed efficiency (i.e., fat-and protein-corrected milk yield/dry matter intake) − 0.11(±0.0199) × P in feed (g/kg of DM) (RMSPE: 19.7%; CCC: 0.761). Equations derived to predict fecal P as a fraction of P intake (g/g) or milk P content (g/ kg) could not adequately explain the observed variation and did not perform well in terms of RMSPE and CCC values. Examination of the residuals showed that P balance was a seemingly confounding factor in some of the models. The results presented here can be used to estimate P in feces and milk based on commonly measured dietary and milk variables, but could also be used to guide development of mechanistic models on P metabolism in lactating dairy cattle. Factors to consider in future research and modeling efforts regarding efficiency of P use include the effects of dietary neutral detergent fiber, crude protein, starch, variation in P content of milk, and effects of P resorption from bone and body tissues during early lactation.

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“…O P perdido por essa via apresenta duas frações: o P de origem dietética que, pode ser eliminado via fezes em consequência de não estar disponível para absorção, visto que no rúmen foi utilizado pelas bactérias e encontra-se conjugado a proteínas bacterianas, que escaparam da digestão abomasal ou está sob a forma de complexos minerais insolúveis. Por outro lado, mesmo que disponível para absorção, parte do P dietético, sob a forma inorgânica, passa pelo trato digestivo intacto em decorrência do atendimento das exigências ou condição fisiológica do animal (SPIEKERS et al, 1993).…”

Section: Fósforo Nas Fezes E Urinaunclassified

Modelagem de fósforo em cordeiros submetidos à infecção experimental com Trichostrongylus colubriformis com uso de 32P

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Influence of dry matter intake on faecal phosphorus losses in dairy cows fed rations low in phosphorus

Cited by 45 publications

References 7 publications

Long-term effects of feeding diets without mineral phosphorus supplementation on the performance and phosphorus excretion in high-yielding dairy cows

Long-term effects of feeding diets without mineral phosphorus supplementation on the performance and phosphorus excretion in high-yielding dairy cows

Meta-analysis of factors that affect the utilization efficiency of phosphorus in lactating dairy cows

Modelagem de fósforo em cordeiros submetidos à infecção experimental com Trichostrongylus colubriformis com uso de 32P

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