Results 191 to 200 of about 5,790 (232)

Evaluation of Biosecurity in Broiler Breeders

Avian Diseases, 1987
The economic impact of management practices designed to limit the introduction of disease into a parent broiler breeder flock (biosecurity) was evaluated using benefit-cost analysis. Equations were developed to quantify the losses resulting from infection with one of four alternative categories of disease representing incremental levels of ...
D H, Gifford, S M, Shane, M, Hugh-Jones, B J, Weigler   +3 more
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Influenza in Commercial Broiler Breeders

Avian Diseases, 1992
Influenza was detected in a flock of broiler breeders during routine serological monitoring. Although there were no clinical signs, egg production may have been affected in hens on one story of a two-story breeder house. Intensive measures were taken to avoid transmission to other farms. Two months after the flock was found to be serologically positive,
D A, Halvorson, V, Sivanandan, D, Lauer
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Infectious tenosynovitis in broilers and broiler breeders in Egypt

Veterinary Research Communications, 1984
Two infectious tenosynovitis-producing viruses were isolated from tendon sheaths and synovial fluids of 59 broilers and 15 broiler breeders obtained from different flocks in Egypt during June to October 1983. The viruses grew well on the chorioallantoic membrane of developing chicken embryos, produced small localized white pock lesions with oedematous ...
H H, Tantawi, N, Amina, Y I, Youssef, M, Fawzia, J M, Al-Abdulla, A, el-Batrawi, A, el-Ghawas, A A, Nasser, I M, Reda   +8 more
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Pharmacokinetics of levamisole in broiler breeder chickens

Journal of Veterinary Pharmacology and Therapeutics, 2006
The pharmacokinetics of levamisole was studied in 20 broiler breeder chickens (chickens that give eggs to breed broilers). A single dose of levamisole (40 mg/kg) was administered orally or intravenously to chickens before the onset of egg production, prelay (age = 22 weeks), and repeated at the peak of egg production (age = 32 weeks).
H, El-Kholy, B, Kemppainen, W, Ravis, F, Hoerr   +3 more
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A review of lighting for broiler breeders

British Poultry Science, 2006
Lighting programmes recommended for broiler breeders are very similar to those advocated for laying hens.
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Illuminance and egg production in broiler breeders

British Poultry Science, 2009
1. Ross broiler breeders were reared at a nominal illuminance of 15, 20 or 45 lux and transferred to a nominal illuminance of 25, 55 or 70 lux at 20 weeks. 2. There were no significant interactions between the response to illuminance during rearing and in lay.
P D, Lewis, R, Danisman, R M, Gous
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On the composition of gastroliths from broiler breeders

Journal of Animal Physiology and Animal Nutrition, 2017
SummaryThe purpose of this study was to ascertain the composition and origin of certain gastroliths or gizzard stones from broiler breeders (Gallus gallus domesticus). Fourier transform infrared spectroscopy (FTIR) and X‐ray powder diffraction techniques were used as analysis tools. The main components resulted to be organic fibre and minerals referred
P. Martín‐Ramos, P. Carrión‐Prieto, M. Sánchez‐Báscones, N. M. Ruiz‐Potosme, J. Martín‐Gil   +4 more
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Diagnosis, Pathology, and Etiology of Tenosynovitis in Broilers and Broiler Breeders

Avian Diseases, 1972
Tenosynovitis virus isolated from the leg tendons of broilerbreeder replacement chickens produced enlarged, firm, and partially nonfunctional leg tendons in broiler chicks, following footpad (FP), intramuscular (IM), and intraperitoneal (IP) inoculation.
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A Case of Aspergillosis in a Broiler Breeder Flock

Avian Diseases, 2002
A case of aspergillosis in a broiler breeder flock having respiratory and nervous system problems caused by Aspergillus fumigatus and Aspergillus niger is documented. Dyspnea, hyperpnea, blindness, torticollis, lack of equilibrium, and stunting were observed clinically.
Mehmet, Akan, Rifki, Haziroğlu, Ziya, Ilhan, Bariş, Sareyyüpoğlu, Recai, Tunca   +4 more
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Encephalomalacia in a Flock of Broiler Breeder Hens

Avian Diseases, 1981
Incidence of vitamin E selenium-responsive disease problems in chickens has increased dramatically in recent years. In many instances, these problems have occurred even though adequate levels of vitamin E and selenium were present in the feed (3). Encephalomalacia usually occurs in young chickens between three and eight weeks of age.
R K, Page, G N, Rowland, P B, Bush
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