Influences of dietary phosphorus variation on nutrient digestion, fecal endogenous phosphorus output and plasma parameters of goats

Yan, Qiongxian; Tang, Shaoxun; Bamikole, M. A.; Han, Xuefeng; Zhou, Chuanshe; Wang, Min; Sun, Zhihong; Tan, Zhiliang

doi:10.1016/j.livsci.2011.06.019

Cited by 8 publications

(4 citation statements)

References 44 publications

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“…Dry matter digestibility was not affected in this study (p>0.05), which coincides with other studies that only detected a decrease when phosphorus deficiency was severe in goats (15).…”

Section: Discussionsupporting

confidence: 92%

“…Although there are not many studies that evaluate the digestibility of nutrients when providing different amounts of P, there is evidence that indicates that organic matter (OM) digestibility is usually not affected, if there is no P deficit (15,16). On the contrary to what happened in the present study, the authors found that the coefficient of absorption of the NDF fraction (50% of the diet) in adult sheep (38-43 kg) was affected (p<0.05) by variations in the P levels (up to 8 g P/day).…”

Section: Discussionmentioning

confidence: 99%

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Nutrient absorption in lambs fed diets containing different amounts of phosphorus

Silva²,

Filho

et al. 2013

Rev MVZ Córdoba

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Objective. Evaluate the effect of increasing P intake on nutrient digestibility, and compare the true and apparent absorption coefficients of P and Ca in lambs. Materials and methods. Twenty-four Santa Ines sheep, with an average weight of 33.6 ± 1.6 kg, were distributed into four treatments (0, 2, 4 and 6 g/day of supplementary P) with forage: concentrate ratio of 70:30. The study of apparent nutrient digestibility was conducted during the first week, using the total feces collection method. During the second week, after injection of 7.4 MBq of 32 P and 7.7 MBq of 45 Ca, apparent (AAC) and true (TAC) absorption coefficients of P and Ca were determined. The lambs were kept in metabolic cages. Results. The increase in P intake did not affect (p>0.05) dry matter, crude protein, NDF or ADF digestibility, but the TAC of P and Ca and mineral matter digestibility decreased. The AAC was not affected (p=0.10). A cubic relationship was observed between P intake and TAC (TAC=2.16-1.95X+0.55X 2 -0.04X 3 ; R 2 =0.38) and linear relationship with the TAC of Ca (TAC=0.559-0.03X; R 2 =0.26). TAC and AAC values were different (p<0.001). Conclusions. The increase in P intake doesn't impact organic matter digestibility, but does affect P and Ca absorption. Apparent digestibility is not a reliable parameter to determine the efficiency of P and Ca absorption.

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“…Dry matter digestibility was not affected in this study (p>0.05), which coincides with other studies that only detected a decrease when phosphorus deficiency was severe in goats (15).…”

Section: Discussionsupporting

confidence: 92%

Section: Discussionmentioning

confidence: 99%

Nutrient absorption in lambs fed diets containing different amounts of phosphorus

Silva²,

Filho

et al. 2013

Rev MVZ Córdoba

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“…Higher serum Ca and lower serum P were caused by low dietary P ( P < 0.001). Insulin might be a regulator in phosphate absorption or re-absorption by ruminants [ 20 ] and a central regulatory factor in the control of nutrient partitioning during growth and development. A previous study on the relationship between growth and plasma insulin has shown that muscle protein synthesis was stimulated by insulin in growing animals [ 21 ].…”

Section: Resultsmentioning

confidence: 99%

Regulation of phosphate transport and AMPK signal pathway by lower dietary phosphorus of broilers

et al. 2017

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Lower available P (aP) was used as a base value in nutritional strategies for mitigating P pollution by animal excreta. We hypothesized that the mechanism regulating phosphate transport under low dietary P might be related with the AMPK signal pathway. A total of 144 one-day-old Arbor Acres Plus broilers were randomly allocated to control (HP) or trial (LP) diets, containing 0.45 and 0.23% aP, respectively. Growth performance, blood, intestinal, and renal samples were tested in 21-day-old broilers. Results shown that LP decreased body weight gain and feed intake. Higher serum Ca and fructose, but lower serum P and insulin were detected in LP-fed broilers. NaPi-IIb mRNA expression in intestine and NaPi-IIa mRNA expression in kidney were higher in the LP group. AMP: ATP, p-AMPK: total AMPK, and p-ACC: total ACC ratios in the duodenal mucosa were decreased in the LP group, whereas the p-mTOR: total mTOR ratio increased. These findings suggested that the increase in phosphate transport owing to LP diet might be regulated either directly by higher mTOR activity or indirectly by the suppressive AMPK signal, with corresponding changes in blood insulin and fructose content. A novel viewpoint on the regulatory mechanism underlying phosphate transport under low dietary P conditions was revealed, which might provide theoretical guidelines for reducing P pollution by means of nutritional regulation.

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“…During the past 10 years, the Wumeng sheep have been affected by phosphorus (P) deprived pastures [2]. Affected Wumeng sheep are characterized as emaciation, lameness, muscular relaxation, enlargement of the costochondral junctions, stiffness of extremities, and abnormal curvature in long bones [3]. Severe affected Wumeng sheep included permanent recumbency and eventual death.…”

Section: Introductionmentioning

confidence: 99%

Response of the Wumeng Sheep to Phosphorus Deprived Environment in the Southwest China

Zhao¹,

Min²,

Shen³

2021

Pol. J. Environ. Stud.

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The objective of this study was to determine the response of the Wumeng sheep on phosphorus (P) deprived range in the Southwest China. Samples of herbage, soil and animal tissue were collected in the studied area. Physiological and biochemical values in blood were examined. The mineral contents were determined in soils, forages and animal tissues (blood, bone, wool). The results showed that P contents in soil and forage from P-deprived pastures were markedly lower than those in healthy ranges (P<0.01) and the ratio of calcium (Ca) to P in the P-deprived forages was 11.49:1. P contents in blood, wool, rib, hip, and teeth from P-deprived Wumeng sheep were also markedly lower than those in healthy sheep (P<0.01). Compared with healthy sheep, the levels of hemoglobin and packed cell volume from P-deficient sheep were significantly lower than those in healthy animals (P<0.01). The levels of creatinine (CRT), lactate dehydrogenase (LDH), and alkaline phosphatase (AKP) in serum were significantly higher and the inorganic phosphorus (IP) value was significantly lower in P-deficient compared with healthy sheep (P<0.01). Contents of α-globulin (α-GLB) and β-globulin (β-GLB) in serum from P-deficient sheep were markedly higher than those in healthy sheep (P<0.01). Serum γ-globulin (γ-GLB) was significantly lower than that in healthy sheep (P<0.01). Therefore, P deprivation in forage not only influenced the mineral content in animal tissue, but also severely disrupted blood parameters (physiology, biochemistry) in Wumeng sheep.

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Influences of dietary phosphorus variation on nutrient digestion, fecal endogenous phosphorus output and plasma parameters of goats

Cited by 8 publications

References 44 publications

Nutrient absorption in lambs fed diets containing different amounts of phosphorus

Nutrient absorption in lambs fed diets containing different amounts of phosphorus

Regulation of phosphate transport and AMPK signal pathway by lower dietary phosphorus of broilers

Response of the Wumeng Sheep to Phosphorus Deprived Environment in the Southwest China

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