Variability in bone mineralization among purebred lines of meat-type chickens

Talaty, Pooja; Katanbaf, M. N.; Hester, Patricia Y.

doi:10.3382/ps.2008-00478

Cited by 13 publications

(9 citation statements)

References 16 publications

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“…Although tibia ash weight was not significantly different between T4 and T1, it was highest in T4 and lowest in T2 (P <0.05). This implies that the increase in dry bone weight and mineral content per unit bone length responds to mechanical forces placed on the bone (McDevitt et al, 2006;Whitehead, 2007;Talaty et al, 2009b). The weight of tibia ash has been found to be a more sensitive indicator of the amount of Ca and P in the diet (Hall et al, 2003).…”

Section: Resultsmentioning

confidence: 99%

“…Skeletal integrity of broiler chickens has become a welfare and economic concern (Williams et al, 2004;Almeida Paz & Bruno, 2006;Fleming, 2008). Weak bones are an undesirable trait in growing broiler chickens, which has been linked to 1.1% mortality of birds, and an additional 2.1% condemnation or downgrading of carcasses during processing (Onyango et al, 2006;Talaty et al, 2009b).…”

Section: Introductionmentioning

confidence: 99%

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The effect of <i>Moringa oleifera</i> leaf meal supplementation on tibia strength, morphology and inorganic content of broiler chickens

Nkukwana¹,

Muchenje²,

Masika³

et al. 2014

SA J. An. Sci.

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This study was conducted to assess the effects of dietary Moringa oleifera leaf meal (MOLM) supplementation as a possible alternative to antibiotic growth promoters on bone breaking strength (BBS), tibia bone morphology and inorganic ash content in broiler chickens. A total of 2400 one-day-old Cobb-500 broiler chicks of mixed sex were randomly allocated to five dietary treatments in six replications of 80 birds per pen. Dietary treatments were as follows: T1, positive control, 668 g salinomycin and 500 g zinc bacitracin per kg of feed; T2, T3 and T4, graded levels of MOLM, that is (starter (1, 3 and 5 g), grower (3, 9 and 15 g) and finisher (5, 15 and 25 g)) per kg of feed; and T5, a negative control (without supplementation). Birds were provided with feed and water ad libitum. Bodyweights (BW) and feed intake (FI) of broilers were measured weekly, and feed conversion ratio (FCR) and average daily gains were calculated accordingly. At 35 days (d) of age, 12 birds per treatment, two from each replicate pen, were randomly selected, stunned electrically at 70 volts, and slaughtered by cervical dislocation. Six left and right tibiae were randomly chosen from each treatment, without being de-fleshed, and were sealed individually in plastic bags to minimize moisture loss. The tibiae were stored at −18 ºC for BBS and tibia ash determination, as well as analyses of their calcium (Ca) and phosphorus (P) composition. Of birds fed diets with higher MOLM levels, T4 had the highest BW, while T1 had the lowest. On days 7 and 21, birds on T4 had the highest average daily gain (ADG) and T1 the lowest, respectively. There were no significant dietary effects in FI on days 7, 21 and 35; while on days 21 and 35, FCR (feed : gain) was highest in MOLM-supplemented birds and lowest in T1 birds, respectively. There were no treatment effects on tibia length (TL), tibia weight (TW) and/or dried tibia weight (DW). A positive correlation (r = 0.667) was observed between TW and DW. There were no treatment effects on BBS and ash percentage, but tibia ash weight was highest in T4 and lowest in T2. Calcium percentage was highest in T1, and lowest in T2 and T5. Phosphorus percentage was lowest in T1 and highest in T5. The highest Ca : P ratio was obtained in T4. The positive correlation observed between BW, TW and TL, and the high P, Ca and ash levels in tibiae from MOLM-supplemented birds depicts the genetic relationship that exists among these parameters. Furthermore, it reveals the effectiveness of MOLM supplementation to enhance nutrient utilization efficiency, increase mineral bioavailability and support bone strength.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The effect of <i>Moringa oleifera</i> leaf meal supplementation on tibia strength, morphology and inorganic content of broiler chickens

Nkukwana¹,

Muchenje²,

Masika³

et al. 2014

SA J. An. Sci.

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“…These structural anomalies may contribute to increased mortality and morbidity that will reduce the overall well being of commercial meat genotypes. There are numerous factors that influence bone development, including nutrition, genetics, and management practices (Leeson, 1988;Bond et al, 1991;Edwards, 2000;Oviedo-Rondón et al, 2006;Talaty and Katanbaf, 2009). Examining the changes in bone characteristics and bone composition over time may help identify those ages or BW at which the potential for skeletal problems to occur is the greatest.…”

Section: Introductionmentioning

confidence: 99%

A comparison of long bone development in historical and contemporary ducks

et al. 2012

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The selection for growth and carcass traits in poultry meat species has contributed to increased interest in understanding and characterizing skeletal growth as the birds struggle to balance skeletal development with increased BW and muscle mass. The objective of this study was to compare the physical characteristics and mineralization of the tibia and femur from commercial Pekin ducks representing circa 1993 and 2010 commercial strains. In 1993, the femur and tibia were collected from 8 ducks at 11 ages between 11 and 53 d. A similar study was done in 2010 in which the femur and tibia were collected from 8 ducks at 12 sample ages between 10 and 49 d. All bones were weighed and the length and width at 50% of length were measured. Each bone was subsequently cut into epiphyseal (top 25% of length) and diaphyseal (midregion at 50% of length) sections. Each bone segment was extracted with ether, hot weighed, and ashed. The 2010 contemporary ducks reached market weight faster than the 1993 ducks. Therefore, statistical comparisons were made at common BW as well as at common ages. The mean tibia length of the 2010 duck was 0.75 cm greater (P < 0.05) at similar ages and similar BW. The percentage ash in the diaphyseal region of the tibia was 3% greater (P < 0.05) in the 2010 versus 1993 ducks. The percentage epiphyseal ash in the femur was 10% lower (P < 0.01) at 10 d and 14 d in the 2010 ducks but there were no significant differences by 18 d of age. The lower epiphyseal ash values at both younger ages and smaller BW in the 2010 contemporary ducks suggests that it is critical to monitor those factors that influence bone mineralization in contemporary ducklings that can achieve market BW at earlier chronological ages.

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“…Jendral et al (2008) found that reduction of the physical exercise of hens led to loss of the bone weight and increased the tendency of bones to fractures. Talaty et al (2009aTalaty et al ( , 2009b confirmed the mineralisation changes of bones and the differences in the features of the skeleton between various lines of meat-type chickens. In turn, Williams et al (2003) emphasised that the growth rate of bones is strictly associated with their mineral content and density.…”

Section: Resultsmentioning

confidence: 55%

Computed tomographic analysis of tibiotarsal bone mineral density and content in turkeys as influenced by age and sex

Charuta¹,

Cooper²,

Pierzchała³

et al. 2012

CZECH J ANIM SCI

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Changes in the volumetric bone mineral density (vBMD) and bone mineral content (BMC) of tibiotarsal bones of growing turkeys as affected by birds' age, sex, and within-the-bone location, respectively, were determined by computed tomography. The research was performed on 165 heavy-type BIG 6 turkeys reared between weeks (wk) 3-16 of age. The computed tomography (pQCT) measurement, conducted at 18 and 50% of the bone length, comprised a bone fragment which was 0.07 mm thick for the compact and the spongious substance collectively. It should be noted that the diaphyses of the tibiotarsal bones in turkeys (580 mg/cm 3 ) had greater vBMD than the proximal metaphyses (300 mg/cm 3 ), (P ≤ 0.001). BMC was higher in metaphyses for both sexes. Significant differences between the BMC of the metaphyses and the diaphyses were observed in males and females at wk 3 (P ≤ 0.01), 6 (P ≤ 0.05), and 9 (P ≤ 0.001), and at wk 3 (P ≤ 0.05) and 12 (P ≤ 0.01), respectively. vBMD in the diaphyses gradually attenuated with age for both sexes, from 688 mg/cm 3 (wk 3) to 532 mg/cm 3 (wk 16). vBMD of the metaphyses was constant in females, but in males it achieved maximum values of 350 mg/cm 3 at wk 6 and 12 and minimum of 260 mg/cm 3 at wk 9 and 16. Correlations between body weight (BW) and vBMD of the diaphyses were observed in males (r = -0.85, P ≤ 0.001) and females (r = -0.52, P ≤ 0.01). It can be concluded that vBMD loss in diaphyses diminished bonebreaking strength leading in investigated turkeys to deformities and bone fractures.

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Variability in bone mineralization among purebred lines of meat-type chickens

Cited by 13 publications

References 16 publications

The effect of <i>Moringa oleifera</i> leaf meal supplementation on tibia strength, morphology and inorganic content of broiler chickens

The effect of <i>Moringa oleifera</i> leaf meal supplementation on tibia strength, morphology and inorganic content of broiler chickens

A comparison of long bone development in historical and contemporary ducks

Computed tomographic analysis of tibiotarsal bone mineral density and content in turkeys as influenced by age and sex

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