Mineral Balance and Urinary and Fecal Mineral Excretion Profile of Broilers Housed in Thermoneutral and Heat-Distressed Environments

Belay, T.; Wiernusz, C. J.; Teeter, R. G.

doi:10.3382/ps.0711043

Cited by 50 publications

(18 citation statements)

References 17 publications

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“…Vitamin D is involved in Ca and P absorption in the gut, bone formation and bone demineralisation and Ca and P resorption by the kidney (Combs, 1998;Atencio et al, 2006). The negative effect of heat stress on mineral excretion has been noted in previous reports (Smith and Teeter, 1987;Belay et al, 1992;Sahin et al, 2006b). Studies have shown that high ambient temperature influences retention and excretion of minerals in poultry (Smith and Teeter 1987;Sahin et al, 2006b).…”

Section: Discussionmentioning

confidence: 89%

Effects of 25-hydroxycholecalciferol and soy isoflavones supplementation on bone mineralisation of quail

Şahin

Balcı

Küçük

et al. 2009

British Poultry Science

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1. The effects of 25-hydroxycholecalciferol (25-OH-D(3)) and soy isoflavones supplementation on performance, carcase recovery, bone mineral density, and tibia ash, Ca, P, and serum vitamin D concentrations and alkaline phosphatase activity in the Japanese quail (Coturnix coturnix japonica) exposed to high ambient temperature were evaluated. 2. A total of 270 ten-d-old Japanese quail were randomly assigned to 9 treatment groups, 6 replicates of 5 birds each in a 2 x 3 x 3 factorial arrangement of treatments. Birds were kept in a temperature-controlled room at either 22 degrees C (thermo-neutral) or 34 degrees C (heat stress) for 8 h/d (09:00-17:00 h) and given a basal (control) diet or the basal diet supplemented with one of three levels of 25-OH-D(3) (0, 250 and 500 IU/kg of diet) combined with one of three levels of soy isoflavones (0, 400 and 800 mg/kg of diet). 3. Birds kept at 34 degrees C consumed less feed and gained less weight than control birds. An increase in body weight, feed intake (and improvement in feed efficiency and carcase recovery were found in soy isoflavones and 25-OH-D(3)-supplemented quail reared under heat stress conditions. Bone mineral density, tibia ash, Ca, and P were linearly improved by 25-OH-D(3) and soy isoflavones supplementation in both thermoneutral and heat stress groups. Serum vitamin D levels and alkaline phosphatase activity were improved by 25-OH-D(3) and soy isoflavones supplementation in both thermoneutral and heat stress groups in quail. 4. In conclusion, a combination of 25-OH-D(3) and soy isoflavones supplementation to basal diet significantly improved bone mineralisation in quail.

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Section: Discussionmentioning

confidence: 89%

Effects of 25-hydroxycholecalciferol and soy isoflavones supplementation on bone mineralisation of quail

Şahin

Balcı

Küçük

et al. 2009

British Poultry Science

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“…Birds subjected to a heat stress environment reduced phosphorus absorption (El-Husseiny and Creger, 1981) and retention (Belay et al, 1992). Moreover, under unfavorable rearing conditions at high temperatures, the phosphorus requirement may be altered (Persia et al, 2003).…”

Section: Introductionmentioning

confidence: 99%

Available phosphorus levels in diets supplemented with phytase for male broilers aged 22 to 42 days kept in a high-temperature environment

Tizziani

Donzele

et al. 2016

R. Bras. Zootec.

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-This study was conducted to evaluate the effect of reduction of the available phosphorus (avP) in diets supplemented with 500 FTU/kg phytase on performance, carcass characteristics, and bone mineralization of broilers aged 22 to 42 days kept in a high-temperature environment. A total of 336 Cobb broilers with an average initial weight of 0.883±0.005 kg were distributed in a completely randomized design with six treatments -a positive control (0.354 and 0.309% avP without addition of bacterial phytase for the phases of 22 to 33 and 34 to 42 days, respectively), and another five diets with inclusion of phytase (500 FTU) and reduction of the level of avP (0.354, 0.294, 0.233, 0.173, and 0.112%; and 0.309, 0.258, 0.207, 0.156, and 0.106% for the phases of 22 to 33 and 34 to 42 days, respectively) -eight replicates, and seven birds per cage. The experimental diets were formulated to meet all nutritional requirements, except for avP and calcium. Birds were kept in climatic chambers at a temperature of 32.2±0.4 °C and air humidity of 65.3±5.9%. Phytase acted by making the phytate P available in diets with reduction in the levels of avP, keeping feed intake, weight gain, feed:gain, and carcass characteristics unchanged. Treatments affected ash and calcium deposition and the Ca:P ratio in the bone; the group fed the diets with 0.112 and 0.106%, from 22 to 33 and 34 to 42 days of age, respectively, obtained the lowest values, although the phosphorus deposition in the bone was not affected. Diets supplemented with 500 FTU of phytase, with available phosphorus reduced to 0.173 and 0.156%, and a fixed Ca:avP ratio of 2.1:1, meet the requirements of broilers aged 22 to 33 and 34 to 42 days, respectively, reared in a high-temperature environment.

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“…However, from the study described herein, it appears that environmental temperature influences the nutrient content of some parts. Increased mineral excretion (Belay et at, 1992) and decreased feed intake (Smith and Teeter, 1993) are two consequences of heat stress. These factors may have an impact on the distribution of nutrients in the broiler carcass.…”

Section: Resultsmentioning

confidence: 99%

“…They include changes in respiration rate (Linsley and Burger, 1964), acid-base balance (Teeter and Smith, 1986), mineral balance (Smith and Teeter, 1987), and feed consumption (Smith and Teeter, 1993). Research (Belay et al, 1992) has shown that heat stress has an adverse effect on mineral balance with increased excretion of several minerals. The physiological changes that result from heat exposure may have an effect on the deposition of nutrients in different tissues.…”

Section: Introductionmentioning

confidence: 98%

Nutrient Content of Carcass Parts from Broilers Reared Under Cycling High Temperatures

Smith

1993

Poultry Science

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A study was conducted in which carcass parts from broilers reared under different growing temperature regimens were examined for crude protein, fat, calcium, phosphorus, potassium, and sodium. Commercial broilers were reared from 22 to 49 days of age at either 23.9 C constant temperature (thermoneutral) or 23.9 to 35 C cycling high temperature (heat stress). Birds in the heat stress environment were exposed to 8 h of 23.9 C, 4 h of 23.9 to 35 C, 4 h of 35 C, and 9 h of 35 to 23.9 C. Within each growth environment, protein and fat content differed among carcass parts. Protein content of thighs and drumsticks from birds grown at elevated temperatures were 10.1 and 5.3%, respectively, higher (P < .05) than those from birds grown in a constant temperature environment, but the fat content of these parts from birds in the cooler environment were higher by 8.3 and 9.4%, respectively (P < .05). There was no effect of temperature on the calcium or phosphorus content of carcass parts, but the sodium content of the breast was higher (P < .05) at elevated temperatures. The breast portion of carcasses from heat-stressed birds had the greatest (P < .05) amount of potassium. (

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Mineral Balance and Urinary and Fecal Mineral Excretion Profile of Broilers Housed in Thermoneutral and Heat-Distressed Environments

Cited by 50 publications

References 17 publications

Effects of 25-hydroxycholecalciferol and soy isoflavones supplementation on bone mineralisation of quail

Effects of 25-hydroxycholecalciferol and soy isoflavones supplementation on bone mineralisation of quail

Available phosphorus levels in diets supplemented with phytase for male broilers aged 22 to 42 days kept in a high-temperature environment

Nutrient Content of Carcass Parts from Broilers Reared Under Cycling High Temperatures

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