Effects of Age, Sex, and Duration of Postmortem Aging on Percentage Yield of Parts from Broiler Chicken Carcasses

Young, L. L.; Northcutt, J. K.; Buhr, R. J.; Lyon, C. E.; Ware, G. O.

doi:10.1093/ps/80.3.376

Cited by 81 publications

(50 citation statements)

References 22 publications

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“…Males had greater leg yield (P<0.01). This finding agrees with the studies of Young et al [64] , Fanatico et al [7] who also found that females have higher breast meat yields than males, whereas males have higher leg yields. Concerning the cut-up yields, the breast meat and thigh and drumstick yields were higher than those (8.0% vs. 21.6%) of Sirri et al [33] .…”

Section: Effect Of Sexsupporting

confidence: 93%

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Comparison of the Growth Performance and Carcass Characteristics of Two Slow-Growing Broiler Genotypes Fed Diets Supplemented with Dry Oregano (Origanum vulgare L.) or Lemon Balm (Melissa officinalis L.) Leaves under the Organic System

Şekeroğlu¹,

Eleroğlu²,

Yıldırım³

et al. 2014

Kafkas Univ Vet Fak Derg

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SummaryThis study was conducted to determine the growth performance and carcass characteristics of two slow-growing broiler genotypes (Hubbard S757 and Hubbard Grey Barred JA) fed diets supplemented with dry oregano (Origanum vulgare L. or lemon balm leaves (Melissa officinalis L.) as growth promoter source under an organic housing system. In this study 240 chicks (mixed-sex) were allocated randomly into 4 experimental groups according to a 2 x 2 factorial arrangement for 2 broiler genotypes and 2 diets. The effects of dry herb leaves and genotype x herb leaves interaction on studied parameters were not significant at all weeks of age (P>0.05), except neck (%). Body weight , body weight gain, feed efficiency, carcass weight and yield, leg weight and yield, breast weight and yield, back weight and yield, edible giblets weight and yield of Hubbard S757 genotype were higher (P<0.05) than those of Hubbard Grey Barred JA genotype. The female breast (P<0.01) and edible giblets yield (P<0.05) were superior to those of males. These results show that herb leaves used as a growth promoter source under organic housing system did not affect the studied parameters and that in terms of these parameters, and subsequent Hubbard S757 genotype were superior to Hubbard Grey Barred JA genotype. Keywords: Organic system, Slow growing chicken, Growing rate, Herb leaves, Carcass traits Organik Sistemde Kuru Kekik (Origanum vulgare L.) ve Melisa (Melissa officinalis L.) Katkılı Yemlerle Beslenen Yavaş Gelişen İki Etlik Piliç Genotipinin Büyüme Performansı ve Karkas Özelliklerinin Karşılaştırılması ÖzetBu araştırma, organik sisteminde yavaş gelişen Hubbard S757 ve Hubbard Gri çubuklu JA etlik piliçlerin; diyetlerine kuru kekik (Origanum vulgare L.) ve oğul otu (Melissa officinalis L.) yaprakları ilave edilmesinin performans ve karkas özelliklerine etkisini saptamak amacıyla yürütülmüştür. Denemede toplam 240 adet günlük etlik civciv (karışık cinsiyet) 2 genotip, 2 diyet ve 3 tekerrürlü olarak faktöriyel deneme deseninde rastgele 4 gruba dağıtılmıştır. Boyun randımanı hariç bütün haftalarda araştırmadaki parametreler üzerine bitki yaprakları ve bitki yaprakları ile genotip interaksiyonunun etkileri gözlenmemiştir (P>0.05). Hubbard S757 genotipinin canlı ağırlık, canlı ağırlık artışı, yemden yararlanma, karkas ağırlığı ve randımanı, but ağırlığı ve randımanı, göğüs ağırlığı ve randımanı, sırt ağırlığı ve randımanı, yenilebilir iç organ ağırlığı ve randımanı Hubbard gri çubuklu JA genotipindekilerden yüksek bulunmuştur (P<0.05). Dişilerin oransal göğüs parçası (P<0.01) ve yenilebilir iç organları (P<0.05) erkeklerinkinden yüksek olmuştur. Bu araştırmanın sonucunda, büyümeyi teşvik edici olarak kullanılan bitki yapraklarının ele alınan özelliklere etkisi saptanmamıştır ve bu parametreler bakımından Hubbard S757 genotipi Hubbard gri çubuklu JA genotipinden üstün bulunmuştur.

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Section: Effect Of Sexsupporting

confidence: 93%

“…Several factors have been shown to affect CW and carcass yield. These factors include genotype, nutrition, age, BW and sex [64,66] . Genotype x sex interaction have significant differences on slaughter weight, hot and cold carcass, wings weights (P<0.05), while other carcass parts weight were similar to those of both genotype and sex.…”

Section: Effect Of Sexmentioning

confidence: 99%

Comparison of the Growth Performance and Carcass Characteristics of Two Slow-Growing Broiler Genotypes Fed Diets Supplemented with Dry Oregano (Origanum vulgare L.) or Lemon Balm (Melissa officinalis L.) Leaves under the Organic System

Şekeroğlu¹,

Eleroğlu²,

Yıldırım³

et al. 2014

Kafkas Univ Vet Fak Derg

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“…Females yielded a higher proportion of breasts (P = 0.0014), but a smaller proportion of thigh than males (P = 0.0171). This result completely agrees with Young et al (2001), who reported the same results.…”

Section: Resultssupporting

confidence: 93%

Comparison of performance and digestibility characteristics of broilers fed diets containing treated hulled barley or hulless barley

Moharrery¹

2006

Czech J. Anim. Sci.

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This study was performed with growing chickens (14 to 56 days of age) to evaluate the effects of feeding a barley-based diet. The treatments were maize diet (1) as a control, barley diet with (4) or without (2) the commercial enzyme β-glucanase, barley treated with rumen fluid without protozoa (3) and hulless barley (5). The effects of treatments were investigated in a 42-day trial using 360 sexed broiler chickens. In a digestibility trial, 15 male broiler chicks were used at 45 days of age. In this regard, five treatments were offered to chickens in three replications individually. The experimental design for performance investigation was a completely randomised one with a 5 × 2 factorial arrangement of treatments. Each of the five treatments was replicated three times per sex (n = 3). The levels of barley in treatments (2) to (5) were 35% during the growing (14 to 42 days) and finishing (42 to 52 days) period. At the end of trial, two birds from each pen were selected and slaughtered. Blood samples were taken just before slaughter of birds. No significant differences (P > 0.05) were observed between (3) to (5) treatments with maize diet in weight gains, feed intake and feed conversion, but barley with no treatment (2) showed lower weight gain compared to the enzyme treatment and hulless barley diet (P < 0.05). Ether extract digestibility decreased significantly in all barley diets compared with maize diet (P < 0.05). Digestibility of DM, CP, and NFE was lower in barley diet with no treatment, in comparison with other treatments (P < 0.05). Reduction of serum cholesterol was observed in birds on hulless barley diet (P < 0.05), but serum triacylglycerols and glucose did not show any significant differences between treatments (P > 0.05). Mean percentage yield of breast showed the highest percentage in barley diet with no treatment (P < 0.05) and abdominal fats were produced in lowest amounts in carcasses on hulless barley diets (P < 0.05).    

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“…Gender mainly affected traits related to animal growth and body composition and, to a considerably lesser extent, those related to meat quality (Table 2). In agreement with the literature (Young et al, 2001;Kidd et al, 2005;Baéza et al, 2010;Lopez et al, 2011), males had the highest BW from 28 days (P < 0.0001) and females exhibited at slaughter the highest BMY and AFP (+3.7% and +16%, respectively, P < 0.0001) but the lowest leg yield (LY) (−3.5%, P < 0.0001). In our experimental conditions, there was no effect of gender on breast and thigh pHu.…”

Section: Resultssupporting

confidence: 90%

Combined effect of divergent selection for breast muscle ultimate pH and dietary amino acids on chicken performance, physical activity and meat quality

Alnahhas¹,

Berri²,

Chabault-Dhuit³

et al. 2017

Animal

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Responses to changes in dietary Lys and other essential amino acid (AA) concentrations were evaluated in 480 male and female broilers originating from two lines divergently selected for high (pHu+) or low (pHu−) ultimate pH (pHu) of breast muscle. The two genetic lines were fed with two grower isoenergetic diets differing in both true digestible Lys (control = 10.2 g/kg and experimental = 7.0 g/kg) and amounts of other essential AA calculated in relation to Lys, which were sufficient for the control diet or in excess for the experimental diet. There were six repetitions per treatment. Birds were weighed individually at days 0, 21, 28 and 43. Feed consumption was recorded per pen and feed conversion was calculated over the growing period. The physical activity and walking ability of broilers were recorded during the whole rearing period. Breast and leg yield, and abdominal fat percentage were measured at 43 days of age, as were pHu, color, drip and cooking loss, Warner-Bratzler shear force, and curing-cooking yield of the breast Pectoralis major and pHu of the thigh Sartorius muscle. Divergent selection greatly affected most breast meat quality traits without significantly changing growth rate or feed efficiency. When subjected to a variation in dietary intake of AA, birds from the two genotypes responded in a similar way in terms of animal's growth, feed efficiency, body composition and meat quality traits. Although line and diet did not affect physical or feeding activities of the broilers, a significant effect of line-by-diet interaction was observed on gait score. Contrary to the pHu− birds, the walking ability of pHu+ birds was impaired when fed the control diet that favored growth and breast muscle development and limited storage of carbohydrate in muscle.

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Effects of Age, Sex, and Duration of Postmortem Aging on Percentage Yield of Parts from Broiler Chicken Carcasses

Cited by 81 publications

References 22 publications

Comparison of the Growth Performance and Carcass Characteristics of Two Slow-Growing Broiler Genotypes Fed Diets Supplemented with Dry Oregano (Origanum vulgare L.) or Lemon Balm (Melissa officinalis L.) Leaves under the Organic System

Comparison of the Growth Performance and Carcass Characteristics of Two Slow-Growing Broiler Genotypes Fed Diets Supplemented with Dry Oregano (Origanum vulgare L.) or Lemon Balm (Melissa officinalis L.) Leaves under the Organic System

Comparison of performance and digestibility characteristics of broilers fed diets containing treated hulled barley or hulless barley

Combined effect of divergent selection for breast muscle ultimate pH and dietary amino acids on chicken performance, physical activity and meat quality

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