Factors Influencing the Quantity of Abdominal Fat in Broilers

Kubena, L. F.; Deaton, J. W.; Chen, T. C.; Reece, F. N.

doi:10.3382/ps.0530211

Cited by 50 publications

(22 citation statements)

References 3 publications

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“…Kubena et al (1974) reported that the increase in environmental temperature resulted in higher percentage of abdominal fat. According to Howlider & Rose (1987) there were increases of 0.81% and 1.6% in abdominal fat and total carcass fat of broilers, respectively, for each degree increased in the environmental temperature.…”

Section: Resultsmentioning

confidence: 99%

Protein levels and environmental temperature effects on carcass characteristics, performance, and nitrogen excretion of broiler chickens from 7 to 21 days of age

Filho

Rosa

Vieira

et al. 2005

Rev. Bras. Cienc. Avic.

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This trial was conducted to evaluate the utilization of low-protein diets formulated based on the ideal protein concept for broiler chickens from 7 to 21 days of age reared at different environmental temperatures. Nine hundred male Cobb-500 ® chickens were used. At day seven chicks were distributed according to a completely randomized design in a 3 x 3 factorial with four replications of 25 birds each. It was used three crude protein levels in the diet (21.5; 20.0 and 18.5%) and three environmental temperatures (low, thermoneutral and high). The performance, carcass characteristics (yield and chemical composition), and nitrogen ingestion and excretion were assessed. There was no significant interaction among the factors for the evaluated variables. Environmental temperatures affected differently chicken performance. High environmental temperature resulted in lower weight gain and higher wing fat percentage, whereas cold temperature resulted in higher feed conversion. On the other hand, low-protein diets decreased weight gain, breast yield, nitrogen excretion and influenced breast and wings chemical composition. Birds reared at high environmental temperature showed lower nitrogen intake and excretion. The results showed that the decrease in protein levels from 7 to 21 days of age contributed to lower nitrogen excretion in broiler chickens, but impaired performance and carcass characteristics independent of rearing temperature.

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Section: Resultsmentioning

confidence: 99%

Protein levels and environmental temperature effects on carcass characteristics, performance, and nitrogen excretion of broiler chickens from 7 to 21 days of age

Filho

Rosa

Vieira

et al. 2005

Rev. Bras. Cienc. Avic.

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“…Muscle was dissected free of surface (non-intrinsic) fat. Abdominal fat content was measured by removing and weighing all adipose tissues surrounding the gizzard, cloaca, and adjacent muscles (Kubena et al, 1974).…”

Section: Liver Muscle and Abdominal Fat Collectionmentioning

confidence: 99%

Hypocholesterolemic Response to Karaya Saponin and Rhodobacter capsulatus in Broiler Chickens

Afrose¹,

Hossain²,

Maki³

et al. 2010

Asian Australas. J. Anim. Sci

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:Dietary karaya saponin and Rhodobacter capsulatus (R. capsulatus) are known to have hypocholesterolemic actions, as reported in our previous studies. This study examined possible synergistic hypocholesterolemic effects of karaya saponin and R. capsulatus in broilers. A total of 150 broilers were allocated into 10 treatments: control, saponin 25 mg, saponin 50 mg, saponin 75 mg, saponin 25 mg+R. capsulatus 0.2 g, saponin 25 mg+R. capsulatus 0.4 g, saponin 50 mg+R. capsulatus 0.2 g, saponin 50 mg+R. capsulatus 0.4 g, saponin 75 mg+R. capsulatus 0.2 g and saponin 75 mg+R. capsulatus 0.4 g. Feed intake and feed efficiency were improved when karaya saponin and R. capsulatus were synergistically supplemented in the diet. Combinations of karaya saponin, especially supplementation of karaya saponin 50 mg+R. capsulatus 0.4 g were shown to have potential hypolipidemic actions in breast and thigh muscle cholesterol and triglycerides, serum cholesterol, low density lipoprotein-cholesterol and triglycerides, as well as improved high density lipoprotein (HDL)-cholesterol (p<0.05). Compared to the control, almost all the treatments significantly increased serum, liver and fecal concentrations of bile acids (p<0.05). Supplementation of both karaya saponin (75 mg) and saponin 50 mg+R. capsulatus 0.4 g reduced palmitic acid (C16:0) and stearic acid (C18:0) in a similar fashion (p<0.05). The ratios of PUFA:SFA or PUFA+MUFA:SFA in the thigh and breast muscle of broilers were greater in karaya saponin and R. capsulatus supplemented groups than in the control group. Thus, our study concluded that supplementation of karaya saponin synergistically with R. capsulatus in the diet of broilers is an effective way to obtain low-cholesterol, low-triglyceride and high HDL-cholesterol enriched poultry meat with a unique fatty acid balance.

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“…Quando expressos em valores percentuais, os sexos diferiram (P<0,01), sendo que as fêmeas apresentaram maior porcentagem de GA, em relação aos machos. Estes resultados estão de acordo com KUBENA et al (1974), SALMON et al (1983) e SOARES et al (1991.…”

Section: Resultado E Discussãounclassified

Rendimento de carcaça de três grupos genéticos de frangos de corte alimentados com rações contendo diferentes teores de proteína

Lisboa¹,

Silva²,

Silva³

et al. 1999

R. Bras. Zootec.

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RESUMO -Este experimento foi realizado com o objetivo de avaliar o rendimento de carcaça de três grupos genéticos de frangos de corte, produzidos na UFV, denominados UFV1, UFV2 e UFV3, alimentados com ração única na fase inicial e rações isoenergéticas contendo 16,5; 18,0; 19,5; e 21,0% de proteína bruta (PB) na fase final. Duzentos e quarenta pintos de cada grupo genético, no total de 720 pintos, foram alojados em 48 boxes até 42 dias de idade. No 43 o dia, dois machos e duas fêmeas, de cada box, foram pesados e abatidos para determinação do rendimento de carcaça. O delineamento experimental usado foi o inteiramente casualizado em arranjo fatorial 3 x 4 x 2 (grupo genético, nível de proteína e sexo), com quatro repetições, num total de 192 aves. Os valores dos dados de duas aves por sexo foram usados para o cálculo da média. Houve diferença entre grupos genéticos para rendimentos de carcaça, peito e coxa, e o grupo UFV1 apresentou os melhores resultados. Entre sexo, os machos foram superiores nos rendimentos de coxa e sobre-coxa, porém observaram-se maiores rendimentos de peito e gordura abdominal para as fêmeas. À medida que o nível de PB da ração aumentou, o rendimento de carcaça e gordura abdominal reduziu e o de coxa aumentou (efeito linear). Não foi verificado efeito significativo de interação simples dos fatores grupo genético, níveis de proteína e sexo.Palavras-chave: frangos de corte, grupos genéticos, nível de proteína, rendimento de carcaça Carcass Yield of Three Genetic Groups of Broiler Chickens Submitted to Diets with Different Protein LevelsABSTRACT -The objective of this experiment was to evaluate the carcass yield of three genetic groups of broilers chickens, obtained at UFV, called UFV1, UFV2 and UFV3. The chicks were fed an unique diet during the initial phase period and isocaloric diet containing 16.5, 18.0, 19.5, and 21.0% of crude protein (CP) at the finishing phase. Two hundred and forty chicks of each genetic group, totaling 720 chicks, were allotted to 48 floor pens up to 42 days of age. At 43 rd day, two males and two females of each pen were weighed and slaughtered for the determination of the carcass yield. A completely randomized experimental design was used in a 3x4x2 factorial arrangement (genetic group, protein level and sex) with four replications, totaling 192 chicks. The values of two chickens data per sex were used in the mean calculation. There were differences among genetic groups for yields of carcass, breast and thigh, and UFV1 group showed the best results. Males had higher yields of thigh and drumstick, however, higher breast and abdominal fat yields were observed for females. As dietary CP levels increased, carcass yield and abdominal fat reduced and thigh yield increased (linear effect). No significant effect was observed for single interaction involving genetic group, protein levels and sex.Key Words: broilers, genetic groups, protein level, carcass yield Rev. bras. zootec., v.28, n.3, p.548-554, 1999 1 Parte da Tese de Mestrado do primeiro autor. 2 Médica Veterinári...

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Factors Influencing the Quantity of Abdominal Fat in Broilers

Cited by 50 publications

References 3 publications

Protein levels and environmental temperature effects on carcass characteristics, performance, and nitrogen excretion of broiler chickens from 7 to 21 days of age

Protein levels and environmental temperature effects on carcass characteristics, performance, and nitrogen excretion of broiler chickens from 7 to 21 days of age

Hypocholesterolemic Response to Karaya Saponin and Rhodobacter capsulatus in Broiler Chickens

Rendimento de carcaça de três grupos genéticos de frangos de corte alimentados com rações contendo diferentes teores de proteína

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