Avaliação do desempenho e rendimento de carcaça de quatro linhagens de frangos de corte criadas em Goiás

Stringhini, José Henrique; Laboissiére, Michelle; Muramatsu, Keysuke; Leandro, Nadja Susana Mogyca; Café, Marcos Barcellos

doi:10.1590/s1516-35982003000100023

Cited by 38 publications

(53 citation statements)

References 3 publications

(1 reference statement)

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“…The difference was significant (p≤0.05) for all variables, except relative liver weight. In agreement with the studies of Penz et al (1998) and Stringhini et al (2003), higher development of small bowel can be observed in the fisrt week for all birds, regardless of treatment, highlighting the importance of specific diets which meet the nutritional requirements of posthatch birds. However, gut relative weight was higher (p≤0.05) at 28 days for the birds which received pre-starter feed with or without probiotics, when compared to birds fed only with starter feed, regardless of probiotics.…”

Section: Resultssupporting

confidence: 92%

Feeding Programs for Broiler Breeders in the Start Phase

Tremarin

Sakamoto

2017

Rev. Bras. Cienc. Avic.

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The fast-growing Brazilian aviculture requires studies to improve zootechnical performance indexes for broiler breeders. The purpose of this study was to assess different feeding programs for broiler breeders on performance and development of digestive organs. A total of 48,000, 1d-old, Cobb 500 broiler breeders were divided into two sheds with 24,000 birds each. The experiment was randomized in block design, considering each shed a block, with 4 treatments and 6 replications per treatment with 2,000 birds in each. Treatments consisted of: Shed 1) T1 = starter feed; T2 = T1 + probiotics; Shed 2) T3 = pre-starter feed; T4 = T3 + probiotics. The productive performance characteristics (bird weight, weight gain, feed intake and feed conversion), the development of digestive organs (gizzard, proventriculus, spleen, bursa of Fabricius and small bowel) as well as the small bowel length were assessed weekly for all experimental groups, in samples of 10 birds per treatment. The best feed conversion and weight gain were observed with pre-starter feed in the first 7 days of age, with or without probiotic. Small bowel, gizzard and proventriculus development at 28 days was better for birds on prestarter feed compared to those on starter feed alone. It is possible to conclude that broiler breeders on pre-starter feed during the first 7 days of age are likely to show better physical and productive performances in the adult phase.

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Section: Resultssupporting

confidence: 92%

Feeding Programs for Broiler Breeders in the Start Phase

Tremarin

Sakamoto

2017

Rev. Bras. Cienc. Avic.

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“…The slaughter age had an increasing linear effect independently of sex and breed. Stringhini et al (2003) did not observe differences on yield carcass or cuts between breeds. Likewise, Moreira et al (2003) did not find significant differences on the carcass yield when breeds selected for conformation were slaughtered at 42 or 49 days old, neither for males or females.…”

Section: Resultsmentioning

confidence: 53%

“…On the other hand, in more recent evaluations, Moreira et al (2003) and Stringhini et al (2003) verified no difference in the yield of carcass or cuts between Ross and Cobb breeds. In relation to the productive performance, these authors observed that both breeds showed a similar satisfactory performance.…”

Section: Introductionmentioning

confidence: 84%

Effect of strain, sex and age on carcass parameters of broilers

Fernandes

Bortoluzzi

Triques

et al. 2013

Acta Sci. Anim. Sci.

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ABSTRACT. A total of 1,080 one-day-old broiler chicks were used, distributed into a completely randomized design in a 6 x 2 x 4 factorial scheme, with six replications of 30 birds each (15 males and 15 females). Chicks were classified into six breeds (Cobb 500 Slow, Cobb Fast, Ross 308, Ross 508, Hybro Plus and Avian 48), male or female and four slaughter ages (43, 45, 46 and 49 days). Ten birds from each experimental unit (5 males and 5 females) were slaughtered to evaluate carcass yield and commercial cuts. Cobb 500 Slow males showed the maximum potential for weight gain at 47 days old, while the other breeds, between 33 and 35 days old, regardless of sex. Carcass and breast fillet yield showed significant differences, independent of breed, sex and slaughter age, highlighting Cobb breeds. Significant interactions were observed for breast yield, boned and deboned legs among breeds, sex and slaughter age; sex was the determining factor. Wing yield has not been affected by any of the studied factors.

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“…No difference was found (p <0.05) between genders and males showed higher cumulative weight gain and feed intake weight as found by various authors (STRINGHINI et al, 2003;MORO et al, 2005;GOMES et al, 2009). Feed conversion did not differ among treatments (p> 0.05); however, differing from results presented by PAIXÃO et al (2011), in which males presented higher feed conversion.…”

Section: Resultsmentioning

confidence: 43%

Light emitting diode (LED) use in artificial lighting for broiler chicken production

et al. 2014

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Light emitting diode (LED) has been used in commercial poultry industry by presenting superior energy savings and providing feasibility on production process. The objective of this research was to evaluate performance and carcass yield of broiler chickens exposed to different LED colors compared with fluorescent lamps. For that, two experiments (E1 and E2) were performed and 2,646 Cobb® chickens were used. In experiment E1, male birds were exposed to 20 lux artificial lighting with red, yellow, blue, and white LED bulbs; and fluorescent bulb. In experiment E2, male and female birds were exposed to 15 lux artificial lighting with red and blue LED bulbs; and fluorescent bulb. Cumulative weight gain (kg), feed intake (kg), feed conversion, hot carcass weight (kg), carcass yield (%), and breast and thigh + drumstick yield (%) were used as response variables. Results showed no difference (p > 0.05) among treatments for performance, carcass yield, and cut yield in experiment E1. In experiment E2 there was only difference between genders (p < 0.05) and males showed higher total weight gain, feed intake, hot carcass weight and thigh + drumstick yield. Different LED color use had same effect as fluorescent lights on broiler performance and carcass yield.

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Avaliação do desempenho e rendimento de carcaça de quatro linhagens de frangos de corte criadas em Goiás

Cited by 38 publications

References 3 publications

Feeding Programs for Broiler Breeders in the Start Phase

Feeding Programs for Broiler Breeders in the Start Phase

Effect of strain, sex and age on carcass parameters of broilers

Light emitting diode (LED) use in artificial lighting for broiler chicken production

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