Available phosphorus levels for 95 to 120 kg barrows genetically selected for lean gain

Arouca, Cláudio Luís Corrêa; Silva, Francisco Carlos de Oliveira; Fontes, Dalton de Oliveira; Donzele, Juarez Lopes; Oliveira, Rita Flávia Miranda de; Haese, Douglas; Kill, João Luís; Paula, Eriane de

doi:10.1590/s1516-35982012000600017

Cited by 3 publications

(2 citation statements)

References 24 publications

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“…The response observed in the present study for phosphorus levels on backfat thickness were similar those observed in other studies (O'Quinn et al, 1997;Traylor et al, 2005;Arouca et al, 2010;Arouca et al, 2012). Phosphorus levels lower than those required by the animals could lead to a lower capacity to deposit muscular mass, and an increased proportion of fat deposited on the carcass (Stahly, 2007).…”

Section: Resultssupporting

confidence: 89%

Digestible phosphorus levels for barrows from 50 to 80 kg

et al. 2016

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-This study was carried out to evaluate the levels of digestible phosphorus in diets for barrows with a high potential for lean meat deposition from 50 to 80 kg. Eighty barrows, with an initial weight of 47.93±3.43 kg, were distributed in completely randomized blocks, with each group given five levels of digestible phosphorus (1.86, 2.23, 2.61, 2.99, and 3.36 g kg −1). There were eight replicates, and two animals per experimental unit. Phosphorus levels did not significantly influence feed intake, weight gain, or feed conversion ratio. Daily digestible phosphorus intake increased linearly as levels of phosphorus in the diet were increased. Phosphorus levels did not significantly influence muscle depth, loin eye area, backfat thickness, or the percentage and quantity of lean meat in the carcass. A linear increase was observed for feeding cost as the levels of digestible phosphorus in the diet were increased, and the level of 1.86 g kg −1 cost 29.4% less when compared with the level of 2.61 g kg −1 . The dry matter, natural matter, the coefficient of the residue, and volatile solids of the waste were not significantly influenced by phosphorus levels. Conversely, it was possible to observe an increasing linear effect for total solids, total phosphorus, and total nitrogen in the waste of animals receiving diets with increased levels of digestible phosphorus. The level of 1.86 g kg −1 , which corresponded to a daily intake of 4.77 g −1 of digestible phosphorus, meets the requirements of barrows weighing 50 to 80 kg.

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Section: Resultssupporting

confidence: 89%

Digestible phosphorus levels for barrows from 50 to 80 kg

et al. 2016

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“…However, according some authors phosphorus may be involved in appetite control (Ruan et al, 2007), and a its deficiency can reduce feed intake in piglets and in growing-finishing pigs (Sørensen et al, 2018a;Vier et al, 2019). Other authors found no changes in feed intake by growing pigs (Arouca et al, 2012;Nieto et al, 2016), broilers (Valable et al, 2018) and laying hens (Yan et al, 2005). However, opposite results concerning feed intake was observed in laboratory animals (juvenile rats) as some authors (Czarnogorski et al, 2004;Sweeny et al, 1998) observed that phosphorus deficient feeds leaded to an increase in the overall feed intake.…”

Section: Performancementioning

confidence: 95%

Chemical body composition and bone growth of young pigs as affected by deficiency, adequate and excess of dietary phosphorus supply

Sobol

Skiba

Raj

et al. 2022

Annals of Animal Science

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Objective of the experiment was to study the effect of deficiency, adequate and excess dietary phosphorus supply on growth performance, retention and utilisation of phosphorus, length, mass and geometry measurements of the femur shaft, content of protein, ash, phosphorus in viscera, edible (meat and fat) and inedible (bones and skin) parts of the body in pigs ageing from 33 to 110 days. It was found that compared to animals fed according to phosphorus requirement the deficiency and excess of dietary phosphorus did not influenced o total feed intake (mean 120.6 kg) and feed conversion (mean 1.9 kg/kg gain). However phosphorus deficiency lowered total gain of the body mass (P=0.0072), diminished weight of the inedible part of the carcass (P=0.0229), decreased the content of body protein (P=0.0171), ash (P=0.0001), and phosphorus (P=0.0001). Whereas, over-supply of dietary phosphorus did not cause any change of these component. Utilisation of the total phosphorus was diminished (P=0.0001) in pigs fed diet with both excess (by 16.26%) and deficiency (by 12.28%) of the phosphorus, but excess had much lower negative impact than its' deficiency. When available form of this element was considered over-supply still reduced (P=0.0001) its utilisation the most (by 26.58%) but deficiency made utilisation the best (7.77%). Both dietary deficiency and over-supply of the phosphorus diminished (P=0.0001) femur mass (by 25 and 11 g , respectively). Thus negative impact of phosphorus deficiency was much stronger. Moreover, phosphorus deficiency diminished (P=0.0015) bone length (by 0.5 cm), however, excess did not change this feature. Response of animals to a decrease bone mass and length due disturbances in phosphorus supply (both deficiency and excess) was the increase the vertical external diameter of the femur shaft.

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Standardized total tract digestible phosphorus requirement of 24- to 130-kg pigs1,2

Vier

Dritz

et al. 2019

Journal of Animal Science

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A study was conducted to determine the standardized total tract digestible phosphorus (STTD P) requirement for 24- to 130-kg finishing pigs housed under commercial conditions. A total of 1,130 barrows and gilts (PIC 359 × 1050, Hendersonville, TN; initially 24.2 kg) were used, with 26 to 27 pigs per pen with 7 replicates per treatment. Pens of pigs were allotted to treatments in a randomized complete block design with body weight (BW) as the blocking factor. The dietary treatments were fed in 4 phases and were formulated to contain 80%, 90%, 100%, 115%, 130%, and 150% of the National Research Council (NRC) requirement estimate for finishing pigs within each phase. Weight ranges for each phase were: 27 to 49, 49 to 76, 76 to 90, and 90 to 130 kg. Treatments were achieved by increasing the amount of monocalcium phosphate at the expense of corn in the diet with no added phytase. All diets were formulated to contain a similar 1.14:1 to 1.16:1 total Ca:P ratio across treatments in all phases. Increasing STTD P resulted in a quadratic response (P < 0.05) in average daily gain (ADG), gain-to-feed ratio (G:F), and final BW. The greatest improvement was observed with STTD P at 130% of NRC for ADG and final BW and at 115% STTD P for G:F. Average daily feed intake increased linearly (linear, P < 0.05) with the inclusion of STTD P. Increasing STTD P resulted in an increase (quadratic, P < 0.05) in hot carcass weight (HCW) and carcass ADG with the greatest response observed with STTD P at 130% of NRC. There was a marginally significant response (quadratic, P < 0.10) in carcass G:F, with the greatest improvement with STTD P at 115% of NRC. Carcass yield decreased (linear, P < 0.05) with increasing STTD P, while there was a marginally significant (linear, P < 0.10) decrease in backfat and increase in fat-free lean. At the end of the study, a metacarpal was collected and analyzed for bone ash. Increasing STTD P resulted in an increase (linear, P < 0.05) in bone ash weight and percentage ash. For ADG and G:F, the quadratic model demonstrated the best fit. The maximum response in ADG and G:F was estimated at 122% and 116% of NRC STTD P, respectively. The broken-line linear model best fit the data for percentage bone ash, with a plateau achieved at 131% of the NRC STTD P. In conclusion, the estimated STTD P requirement of 24 to 130 kg ranged from 116% to 131% of the NRC publication (2012) requirement estimate.

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Available phosphorus levels for 95 to 120 kg barrows genetically selected for lean gain

Cited by 3 publications

References 24 publications

Digestible phosphorus levels for barrows from 50 to 80 kg

Digestible phosphorus levels for barrows from 50 to 80 kg

Chemical body composition and bone growth of young pigs as affected by deficiency, adequate and excess of dietary phosphorus supply

Standardized total tract digestible phosphorus requirement of 24- to 130-kg pigs1,2

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