Response of Broilers to Omitting Dicalcium Phosphate from the Withdrawal Feed: Live Performance, Carcass Downgrading and Further-Processing Yields

Chen, X.; Moran, E. T.

doi:10.1093/japr/3.1.74

Cited by 7 publications

(3 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is showed that low nPP diets, in the first stage of growth, caused better adaptation to lower concentrations of P in subsequent stages (Moran and Todd, ). Phosphorus concentrations and phytase inclusion had no effect on total FI, and it is in agreement with previous reports (Chen and Moran, , ; Skinner et al., ). In addition, chicks which received 4.5 g/kg nPP of starter diet with phytase inclusion in grower feed showed an increase in total FI compared with those received 6 g/kg of nPP in the starter period.…”

Section: Discussionsupporting

confidence: 93%

Effects of high non‐phytate phosphorus starter diet on subsequent growth performance and carcass characteristics of broiler chickens

Baradaran

Shahir

Waldroup

et al. 2013

Animal Physiology Nutrition

View full text Add to dashboard Cite

The trial was performed to investigate the effects of different concentrations of non-phytate phosphorus (nPP) in the starter and grower (with phytase inclusion) periods on carcass characteristics, organ weight and weekly variations of growth performance in the grower period. Seven hundred and twenty-day-old male broiler chickens were randomly assigned to 12 treatments in a completely randomized design. Chickens received two dietary treatments (4.5 g/kg and 6 g/kg nPP) in the starter (0-21 days) and six experimental diets (4 g/kg, 3.1 g/kg, 2.3 g/kg and 2.3 g/kg + 1000 FTU/Kg of feed phytase, 1.5 g/kg, 1.5 g/kg nPP + 1000 FTU/Kg of feed phytase) in the grower period (22-42 days). Results showed that phytase inclusion in the second and third weeks of grower period could increase feed intake significantly. Also, decrease in the concentrations of nPP to 1.5 g/kg caused to decline body weight gain markedly. Moreover, there is a significant difference between 4.5 g/kg and 6 + 4 g/kg nPP (starter+grower) and 1.5 g/kg nPP. Phytase inclusion increased carcass yield and declined liver weight significantly. Dietary treatment of 4.5 + 1.5 g/kg nPP enhanced heart and liver weight markedly. It is concluded that starter diets with increased concentration of nPP (6 g/kg nPP) had no beneficial effects on growth performance in the starter and grower period in the total (0-42 days). Also, it is possible to decrease nPP concentration of grower diets to 1.5 and 2.3 g/kg with and without phytase inclusion respectively.

show abstract

Section: Discussionsupporting

confidence: 93%

Effects of high non‐phytate phosphorus starter diet on subsequent growth performance and carcass characteristics of broiler chickens

Baradaran

Shahir

Waldroup

et al. 2013

Animal Physiology Nutrition

View full text Add to dashboard Cite

show abstract

“…University data suggest no negative effects on growth performance or carcass characteristics when this production strategy is employed (Waldroup et al, 1968;Skinner et al, 1992c;Deyhim and Teeter, 1993). Furthermore, Skinner et al (1992a) and Chen and Moran (1994) reported that withdrawal of the inorganic P source during the last week before slaughter had no effect on growth performance or carcass characteristics of broilers. Thus, the objectives of the experiments reported herein were to determine the effects of omitting vitamin and trace mineral premixes and(or) reducing inorganic P additions in late finishing diets on growth performance, carcass characteristics, and muscle quality in pigs.…”

Section: Introductionmentioning

confidence: 89%

Effects of omitting vitamin and trace mineral premixes and(or) reducing inorganic phosphorus additions on growth performance, carcass characteristics, and muscle quality in finishing pigs.

Mavromichalis

Hancock

Kim

et al. 1999

Journal of Animal Science

View full text Add to dashboard Cite

Three experiments were conducted to determine the effects of omitting vitamin and trace mineral premixes and(or) reducing inorganic phosphorus additions to finishing diets on growth performance, carcass characteristics, and muscle quality in pigs. In Exp. 1, a corn-soybean meal-based diet (.70% lysine, .65% Ca, and .55% P) was used as the control. Pigs (n = 128; average initial BW of 85.7 kg) were fed the control diet or the control diet without 1) the vitamin premix, 2) the trace mineral premix, or 3) both premixes. Omitting the premixes had no effect on ADG (P>.39); gain/feed (P>.17); carcass backfat thickness (P>.42); and marbling, color, and firmness of the longissimus muscle (P>.11). In Exp. 2, pigs (n = 128; average initial BW of 86.2 kg) were fed the control diet (.65% Ca and .53% P) used in Exp. 1 and the control diet without 1/3 (.56% Ca and .46% P), 2/3 (.51% Ca and .40% P), or all (.47% Ca and .31% P) of the added monocalcium phosphate (MCP). Omitting up to 2/3 of the MCP increased ADG (quadratic effect, P<.02) and had no effect on meat quality (P>.12), but backfat thickness increased slightly (quadratic effect, P<.02). In Exp. 3, pigs (n = 160; average initial BW of 86.6 kg) were fed the control diet used in Exp. 1 or the control without 1) the vitamin and trace mineral premixes, 2) 2/3 of the MCP, or 3) the premixes and 2/3 of the MCP. Treatment had no effects on ADG (P>.23), gain/feed (P>.94), stomach lesions (P>.37), or serum gamma globulins (P>.08). In conclusion, vitamin and trace mineral premixes and up to 2/3 of the supplemental MCP can be omitted during late finishing (i.e., approximately the final 30 d) to reduce nutrient excesses that increase cost of feeding and nutrients excreted in waste material.

show abstract

“…Several reports have shown no adverse effect on broiler performance when dietary P and Ca were lowered in the grower and finisher diets Chen and Moran, 1994;Yan et al, 2001). The results of previous experiment clearly showed that broiler chickens exhibit diet-modulated intestinal phytase activity and can use phytate P (Abudabos, 2012).…”

Section: Introductionmentioning

confidence: 91%

Effect of Dietary Phosphorus and Calcium on Performance of Broilers from 3 to 7 Weeks of Age

Abudabos

2012

Avian Biology Research

View full text Add to dashboard Cite

In this experiment the effects of total dietary phosphorus (TP) and calcium (Ca) on growth, feed conversion ratio, breast muscle yield, serum phosphorus (P), and bone measurements were examined. From 3 to 6 weeks, four levels of TP (4.5, 5.0, 5.5, and 6.0 g kg À 1 ) and two levels of Ca (7.0 and 9.0 g kg À 1 ) provided eight treatments. From 6 to 7 weeks, diets with two levels of TP (4.5 and 5.5 g kg À 1 ) and three levels of Ca (6.0, 7.0, and 8.0 g kg À 1 ) were used. Diets with 4.5 g kg À 1 TP did not contain a source of inorganic P. Interactions were detected for feed intake, weight gain, and serum P at 6 weeks. Birds fed 5.0, 5.5, and 6.0 g kg À 1 TP with 9.0 g kg À 1 Ca consumed more feed and gained more weight as compared to the other groups. Feed conversion of birds fed the 9.0 g kg À 1 Ca diet was lower than those fed diets with 7.0 g kg À 1 Ca. Serum P was increased (P50:05) at the lowest level of TP when dietary Ca was lowered. Lowering the Ca level, in general, raised (P50:05) serum P. Ash was a function of the amounts of TP and Ca in the diets; Ca and P contents of the bones were not affected by the dietary treatments (P40:05). Interactions or main effects for TP and Ca were not detected for body weight gain, feed consumption, feed conversion, breast muscle yield, serum P and bone measurements at 7 weeks of age. Our findings demonstrate that from 3 to 6 weeks of age, dietary total P can be lowered to 5.0 -5.5 g kg À 1 while the inorganic P source can be removed in the finisher diets without loss in performance or bone integrity.

show abstract

Response of Broilers to Omitting Dicalcium Phosphate from the Withdrawal Feed: Live Performance, Carcass Downgrading and Further-Processing Yields

Cited by 7 publications

References 6 publications

Effects of high non‐phytate phosphorus starter diet on subsequent growth performance and carcass characteristics of broiler chickens

Effects of high non‐phytate phosphorus starter diet on subsequent growth performance and carcass characteristics of broiler chickens

Effects of omitting vitamin and trace mineral premixes and(or) reducing inorganic phosphorus additions on growth performance, carcass characteristics, and muscle quality in finishing pigs.

Effect of Dietary Phosphorus and Calcium on Performance of Broilers from 3 to 7 Weeks of Age

Contact Info

Product

Resources

About