Utilization of phosphorus and calcium and minimal maintenance requirement for phosphorus in growing sheep fed a low-phosphorus diet

Boxebeld, A.; Guéguen, L.; Hannequart, Geneviève; Durand, Michelle

doi:10.1051/rnd:19830710

Cited by 26 publications

(17 citation statements)

References 16 publications

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“…Tables 3 and 6 show that P deficiency grossly reduced plasma P ; concentrations and tended to increase Ca concentrations, whereas low Ca intake had no influence on plasma Ca and gave a non-significant rise to P ; concentration. These findings fully agree with published results (Young et ah, 1966;Perge et al, 1982;Boxebeld et al, 1983;Braithewaite 1985;Schneider et al, 1985;Breves et al, 1987;Corlett and Care 1988;Rodehutscord et al, 1994;Pfeffer et al, 1995). Only when Ca concentration of dietary dry matter was reduced to less than 1 g/kg, Field et al, (1975) observed reductions in plasma Ca concentrations of lambs.…”

Section: Discussionsupporting

confidence: 95%

“…Although very high rates of Ca intakes seem to be without negative effects on lambs (Young et al, 1966) or dairy goats (Deitert and Pfeffer, 1993;Pfeffer et al, 1993) fed on reduced levels of P, excesses of Ca have been found to amplify negative effects of P deficiency in growing lambs (Boxebeld et al, 1983) and kids (Pfeffer et al, 1995).…”

Section: Introductionmentioning

confidence: 95%

“…In mature sheep, increased bone turnover resulted when Ca intake was reduced from more than 12 to less than 2 g daily (van de Braak and van't Klooster, 1987 Braithewaite (1986) interpretes Ca:P retention ratios much higher than normal to suggest "that during periods of P shortage, mineralisation and remodelling of the skeleton can continue to a limited extent, but with a bone salt rich in Ca but poor in P".…”

Section: Introductionmentioning

confidence: 96%

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Effects of varying dietary calcium and phosphorus on growth and on composition of empty bodies and isolated bones of male kids

Pfeffer

Rodehutscord

Breves

1996

Archiv für Tierernaehrung

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Two experiments, each following a two-factorial design (2 x 2), were carried out using 12 and 13 male kids initially weighing about 10 kg. Concentrations per kg dietary dry matter were 10 vs. 4 g Ca and 4.5 vs. 2.0 g P in experiment 1 as compared to 10 vs. 17 g Ca and 4.2 vs. 2.5 g P in experiment 2, respectively. In experiment 1, low Ca intake significantly reduced empty body concentrations of ash, Ca and P with no negative effect on performance traits, whereas low P intake negatively affected feed intake, growth rate and feed conversion ratio, and reduced empty body concentrations of ash, Ca, P and Mg. Low intake of either one or both of these elements increased lipid concentrations of femora, pelvis and vertebrae. In these three bones, the respective ratios Ca/P, Ca/Mg and P/Mg were decreased by low Ca intake and, to greater extents, increased by low P intake. Low intake of both elements caused less pronounced changes than low intake of P alone. In experiment 2, lowering dietary P concentration to 2.5 g/kg dry matter significantly reduced growth rates without affecting empty body concentrations of ash, Ca, P or Mg. Almost doubling Ca intake significantly increased body concentrations of ash, Ca and P at both levels of P intake without influencing growth rates.

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Section: Discussionsupporting

confidence: 95%

Section: Introductionmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 96%

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Effects of varying dietary calcium and phosphorus on growth and on composition of empty bodies and isolated bones of male kids

Pfeffer

Rodehutscord

Breves

1996

Archiv für Tierernaehrung

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“…Moreover, Mejia-Haro et al (2001) found no differences in the apparent absorption and retention of P in 6-month old lambs fed a diet slightly deficient in P and Ca:P ratios of 2.5:1.5, 6:1 and 9:1. However, Boxebeld et al (1983) observed in 6-month old lambs fed semipurified diets that the negative effects of a P marginal deficiency (decreased phosphatemia and DMI) got worse when Ca was supplied to get a Ca:P ratio equal to 9.1:1. Also, Wan zahari et al (1990) observed in wether lambs grown from 25 to 50 kg BW that a Ca:P ratio of 3.6:1 had a negative effect on intake and growth rate when P was supplied at 0.75 times its requirement.…”

Section: Calcium and Phosphorusmentioning

confidence: 99%

Nutrient limits in diets for growing dairy goats

Marín¹,

Pérez-Hernández²,

Pérez-Alba³

et al. 2012

Arch. med. vet.

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RESUMENEl objetivo del presente trabajo fue revisar el consumo de materia seca y las necesidades nutritivas de cabras lecheras de reposición estabuladas para establecer límites nutricionales aplicables a la formulación de dietas por programación lineal a mínimo coste. El diseño de dietas nutricionalmente adecuadas y económicas requiere que el nutricionista estime correctamente el consumo de materia seca y forraje y los aportes y las necesidades de nutrientes. La bibliografía revisada sugiere que el consumo total de materia seca de las cabras oscila entre los límites físico y fisiológico impuestos por la capacidad del tracto digestivo y las necesidades energéticas diarias. El efecto de llenado digestivo puede relacionarse con los carbohidratos estructurales de la dieta, mientras la saciedad metabólica se relaciona con la concentración energética de la dieta. El consumo mínimo de forraje necesario para mantener la salud ruminal es bajo, mientras que el consumo máximo de forraje está determinado probablemente por el contenido de fibra neutrodetergente de la dieta. Los aportes y las necesidades de energía y proteína calculadas según los dos sistemas de valoración más modernos son similares, por lo que es indistinto usar cualquiera de ambos para optimizar dietas. Las propuestas recientes para el cálculo de los aportes y las necesidades de calcio y fósforo ofrecen una mayor precisión.

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“…Some studies have showed that dietary Ca has little effect on voluntary DMI or mobilisation of P (Ternouth and Sevilla, 1990;Bortolussi et al, 1992) and that high Ca:P ratios have no effect on P utilisation in lactating ruminants as long as P is adequate (Deitert and Pfeffer, 1993;de Waal and Koekemoer, 1997). Other research, however, has demonstrated that high a Ca:P ratio has a negative effect (Boxebeld et al, 1983;Pfeffer et al, 1995). In Australian studies, high Ca:P ratios, resulting from high Ca concentrations in stylo-dominated pasture, has important consequences: changes in faecal P, P i , bone thickness and live weight gain for beef cattle (Winter, 1988;Coates, 1994).…”

Section: Control Of Phosphorus Homeostasis and The Interaction Of Calmentioning

confidence: 99%

Factors affecting the faecal P status of lactating beef cattle in Northern Australia

Dollemore¹

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Phosphorus (P) deficiency can be challenging to diagnose and its impact on beef production difficult to quantify. However, an indicator of wet season P has been identified as a major factor affecting the reproductive performance of beef breeding females across northern Australia (McGowan et al., 2014). Faecal near infrared reflectance spectroscopy (FNIRS, to estimate dietary metabolisable energy (ME)) and wet chemistry (to estimate faecal P (FP)) are methods used to create a newly developed ratio of faecal phosphorus to metabolisable energy (FP:ME) to assess the risk of P deficiency adversely affecting the reproductive performance of beef breeding herds. This study investigated property-level environmental, management and animal factors affecting wet season FP:ME under extensive grazing conditions. Pooled faecal samples were collected over the wet season (November, January, February, April) for three years from commercial beef breeding mobs managed on 78 properties located across northern Australia. Animal, management and environmental information was subjected to univariate and multivariate analysis to identify those factors that significantly influenced wet season FP:ME. The three major factors affecting the likelihood of FP:ME being less than 500mgP/MJME, i.e.where the risk of wet season P deficiency was considered to adversely affect the reproductive performance of heifers and cows, were the soil P classification of the property according to McCosker and Winks (1994), an early onset of the wet season, and the duration of wet season P supplementation. In locations where soil P had been historically categorised as "acute and deficient" the prevalence with which the wet season FP:ME was considered to adversely affect reproductive performance was 42% greater than for locations categorised as "adequate" (Odds ratio (OR)=17.8; p=0.002). When the onset of the wet season was "normal to late" the prevalence of an adverse effect on reproductive performance was 27% greater than when the wet season onset was "early" (i.e. before 15th September) (OR=5.4; p=0.002). Where properties provided a P supplement for greater than one month during the wet season the prevalence of an adverse effect was 25% greater than when wet season P supplement was provided for one month or less (OR=4.7; p=0.048). As only 22% of producers provided wet season P supplement for more than one month and of them, 68% were located on soil types acutely deficient in P, it is suggested there has been a confounding of the "duration of wet season P 3 | P a g e M . P h i l . -W h i t n e y D o l l e m o r e -4 1 0 1 4 8 8 6supplementation" result by soil P classification and producer awareness of breeder requirements for wet season P supplementation. Further research is required to define the direct and modifying effects of each of these factors on the FP:ME ratio.This study has served to identify the main factors affecting the FP:ME and may assist in the decision-making process for management strategies to reduce the risk of P deficiency adversely ...

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Utilization of phosphorus and calcium and minimal maintenance requirement for phosphorus in growing sheep fed a low-phosphorus diet

Cited by 26 publications

References 16 publications

Effects of varying dietary calcium and phosphorus on growth and on composition of empty bodies and isolated bones of male kids

Effects of varying dietary calcium and phosphorus on growth and on composition of empty bodies and isolated bones of male kids

Nutrient limits in diets for growing dairy goats

Factors affecting the faecal P status of lactating beef cattle in Northern Australia

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