Performance of Rhode Island Red, Black Australorp, and Naked Neck crossbreds under alternative production systems
نویسندگان
چکیده
منابع مشابه
Performance differences of Rhode Island Red, Bashang Long-tail Chicken, and their reciprocal crossbreds under natural cold stress
OBJECTIVE The Bashang Long-tail chicken (BS), an indigenous Chinese breed, is considered cold tolerant. We selected BS, the Rhode Island Red (RIR), and their reciprocal crossbreds for the present study. The objectives were: i) to validate whether BS is cold tolerant and whether egg production and cold tolerance of crossbreds could be improved; and ii) to determine the physiological characterist...
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This study aimed to characterize production and reproduction performances in Rhode Island Red-White strain chicken developed and maintained at the Central Avian Research Institute, Izatnagar. Three hundred and forty six fertile eggs were set in automated electric incubation and 234 chicks were investigated in three hatches. The performance data was analyzed by least squares analysis of variance...
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This study aimed to estimate microsatellite based genetic diversity in two lines (the selected RIRS and control line RIRC) of Rhode Island Red (RIR) chicken. Genomic DNA of 24 randomly selected birds maintained at Central Avian Research Institute (India) and 24 microsatellite markers were used. Microsatellite alleles were determined on 6% urea-PAGE, recorded using GelDoc system and the samples ...
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Egg production data on Rhode Island Red and White Plymouth Rock hens selected for 11 generations under a tropical environment in Thailand were used to estimate genetic parameters for age at first eggs (AFE), body weight at first eggs (BFE), weight of first eggs (WFE), egg production from 1 day to 17 weeks of lay (EGG) and average egg weight at 17 week of lay (EWT). Estimated heritability for AF...
متن کاملEffect of Silkworm Pupae on the Growth and Egg Production Performance of Rhode Island Red (RIR) Pure Line
A total of 63 day-old straight run Layer chicks up to 45 weeks of age on 3 isonitrogenous and isoenergetic diets D (6% PC+ 0% SWP), D (0% PC+ 6% SWP), and D (0% PC+ 8% SWP) were fed to 1 2 3 observe the effect of dietary SWP on growth and egg production performance. This study revealed that profitability, growth and egg production performance of RIR pure line were significantly (P<0.01) higher ...
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ژورنال
عنوان ژورنال: South African Journal of Animal Science
سال: 2020
ISSN: 2221-4062,0375-1589
DOI: 10.4314/sajas.v50i4.8