The effects of particulate limestone and
25-hydroxy-cholecalciferol in broiler chicken diets
on the mechanical properties of bones

Świątkiewicz, Sylwester; Koreleski, J.

doi:10.22358/jafs/70715/2005

Cited by 3 publications

(2 citation statements)

References 6 publications

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“…Whitehead et al (2004) suggested that the use of 25-OH-D 3 may Bone quality characteristics and performance in broiler chickens fed diets supplemented with organic acids be an alternative for increasing the permissible maximum of vitamin D 3 in the diet. The addition of 25-OH-D 3 to the broiler diet decreased the incidence of tibial dyschondroplasia, in the case of both the standard diet (Rennie and Whitehead, 1996;Fritts and Waldroup, 2003) and a diet with a low calcium level (Ledwaba and Roberson, 2003) and had a positive effect on the bone quality in broilers (Świątkiewicz and Koreleski, 2005;Świątkiewicz et al, 2006).…”

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confidence: 99%

Bone quality characteristics and performance in broiler chickens fed diets supplemented with organic acids

Świątkiewicz¹,

Arczewska-Włosek²

2012

CZECH J ANIM SCI

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Leg weakness, lameness and other bone abnormalities connected with various metabolic disorders are continuing problems in rapidly growing meat-type chickens, leading to considerable production losses and having a negative effect on bird welfare (Julian, 2005;Waldenstedt, 2006;Dibner et al., 2007). It has been reported that the bones in modern broiler lines are characterized by poor calcification and high porosity, which may cause an increased affinity for bone damage (Williams et al., 2000). The reduced walking ability caused by bone disorders can lead to difficulties in feed intake and a decreased body weight for chickens in production. The causes of bone abnormalities in broilers are usually complex, having a substantial genetic component and a high correlation with the growth rate. However, nutrition can also have an effect on the development of bone disorders and thus its optimization may be a strategy for decreasing the severity of leg lesions in broilers. Vitamin D 3 is one of the main nutritional factors crucial to Ca and P absorption and proper skeletal development. It is generally added to diets in the form of cholecalciferol; however, in order to carry out its physiological function, it must be hydroxylated in a two-step process: in the liver (to 25-OH-D 3 ) and in the kidneys (to 1.25-OH-D 3 ). Whitehead et al. ABSTRACT: A 6-week experiment with broilers was conducted to study the effect of diet supplementation with organic acids on performance, characteristics of the tibia and femur bones, and the calcium, phosphorus and zinc balance. A total of 320, one-day-old, Ross 308 chickens were randomly assigned to 1 of 8 treatments. A 2 × 4 factorial arrangement was used, with two dietary levels of calcium and available phosphorus (standard -9.4/9.2 g Ca/kg and 4.3/4.0 g available P/kg, or reduced -8.3/8.1 g Ca/kg and 3.7/3.5 g available P/kg, for the starter/finisher feeding phases, respectively), and with diets supplemented with organic acids (none; short chain fatty acids (SCFA), 4.0 g/kg; medium chain fatty acid (MCFA), 2.0 g/kg or SCFA + MCFA, 3.0 + 2.0 g/kg). Broilers fed diets supplemented with SCFA or MCFA displayed a performance similar to those fed the unsupplemented diet (P > 0.05). At 42 days, reducing the dietary levels of Ca and P decreased such bone parameters as tibia yielding load (256 vs. 270 N) and tibia stiffness (171 vs. 184 N/mm), as well as femur breaking strength (342 vs. 369 N), yielding load (233 vs. 250 N), stiffness (164 vs. 174 N/mm), and cortex thickness (1.47 vs. 1.56 mm). The organic acids had no effect on the parameters of the tibias; however, SCFA and SCFA+MCFA increased the yielding load and stiffness of the femurs. The SCFA diet supplementation significantly increased the relative retention of Ca (45.0 vs. 41.1%). There were no significant Ca and P level × organic acids interaction effects on performance parameters, bone quality indices or the Ca, P, and Zn balance. It was thus concluded that SCFA can improve the bone quality and Ca balance in broiler chickens when fed eit...

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confidence: 99%

Bone quality characteristics and performance in broiler chickens fed diets supplemented with organic acids

Świątkiewicz¹,

Arczewska-Włosek²

2012

CZECH J ANIM SCI

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“…However, increasing dietary calcium concentration did not ameliorate bone calcium concentration and retention. Without fat supplementation, Swiatkiewicz and Koreleski (2005) reported that simultaneous addition of particulate limestone and 25-OH vitamin D 3 improved loading capacity and bone stiffness. In another experiment, Koreleski and Swiatkiewicz (2005) reported that the interaction effect of limestone level by limestone source by vitamin D level was age dependent, with old laying hens being most responsive.…”

Section: Metabolic Profile and Bone Characteristicsmentioning

confidence: 99%

The Effects of Vitamin D Supplementation to Peak-producing Hens Fed Diets Differing in Fat Source and Level on Laying Performance, Metabolic Profile, and Egg Quality

Turgut¹,

Hayırlı²,

횉elebi³

et al. 2006

Asian Australas. J. Anim. Sci

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This experiment was designed to examine the effects of supplemental vitamin D on laying performance, metabolic profile and egg quality of hens fed diets containing different fat sources and levels. Lohman strains (n = 480) were assigned to one of 10 diets: basal diet (BD), BD plus 2.5 and 5.0% sunflower oil (SO) or tallow (T) at vitamin D provided 1× and 3× of the current recommendation. The experiment lasted from week 30 to 44 of age. Each diet was tested in 12 replicate cages of 4 hens. Production, metabolism, and egg quality data were subjected to three-way ANOVA. Both fats decreased feed intake (FI) as compared to BD. Increasing SO and T levels linearly decreased and quadratically increased FI, respectively. The dietary factors did not affect egg production (EP) and egg weight. Vitamin D supplementation increased and decreased EP when diets contained SO and T, respectively. Feed conversion efficiency (FCE) for hens fed SO was lower than for hens fed T. However, increasing T level improved FCE, whereas increasing SO level worsened FCR. Vitamin D supplementation increased serum vitamin D and glucose concentrations. Vitamin D supplementation also caused a decrease and an increase in serum vitamin D concentration when diets contained SO and T, respectively. Serum glucose concentration for hens fed SO was lower than hens fed T. Increasing fat level linearly increased serum triglyceride and VLDL concentrations, regardless of the fat type. Increasing SO level linearly decreased serum cholesterol concentration. Vitamin D supplementation did not alter lipid metabolites. The dietary factors did not affect serum total protein, Ca, and P concentrations. As compared with BD, feeding SO decreased dry tibia and ash weights more than feeding T. Vitamin D supplementation tended to increase dry tibia weight and decrease tibia ash weight. Eggshell strength and thickness, yolk and albumen indexes, and Haugh unit were not responsive to the dietary factors. Eggshell strength quadratically increased with increasing T level. Yolk color for hens fed SO was lower than for hens fed T. The dietary factors did not affect most of yolk fatty acids. Increasing SO level quadratically decreased yolk C 18:2 concentration. Vitamin D supplementation increased and decreased yolk C 18:2 concentration when diets contained SO and T, respectively. In conclusion, increasing fat level improved laying performance without altering metabolic profile and egg quality. Vitamin D supplementation had minor alteration effects on laying performance, metabolic profile, and egg quality in response to fat feeding.

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Prebiotic fructans and organic acids as feed additives improving mineral availability

Świątkiewicz

Arczewska-Włosek

2012

World's Poultry Science Journal

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Mineral availability is one of the most important concerns in poultry nutrition. In modern, high-producing, meat and laying poultry, mineral metabolism disorders often lead to decreased eggshell quality and osteoporosis in laying hens and bone weakness in broiler chickens. This has negative effects not only on the economic profitability of production but also on the welfare of the birds. The article discusses the results of studies on the effect of chosen feed additives, namely organic acids and prebiotic fructans, on mineral utilisation in poultry. The results of some of the experiments presented in the article indicate that the use of these additives may have a positive impact on mineral metabolism in poultry.

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The effects of particulate limestone and 25-hydroxy-cholecalciferol in broiler chicken diets on the mechanical properties of bones

Cited by 3 publications

References 6 publications

Bone quality characteristics and performance in broiler chickens fed diets supplemented with organic acids

Bone quality characteristics and performance in broiler chickens fed diets supplemented with organic acids

The Effects of Vitamin D Supplementation to Peak-producing Hens Fed Diets Differing in Fat Source and Level on Laying Performance, Metabolic Profile, and Egg Quality

Prebiotic fructans and organic acids as feed additives improving mineral availability

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