Results 201 to 210 of about 92,373 (234)
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Encephalomalacia in a Flock of Broiler Breeder Hens
Avian Diseases, 1981Incidence 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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Photoperiod and oviposition time in broiler breeders
British Poultry Science, 20041. Oviposition times were recorded for broiler breeder hens under 8-, 10-, 11-, 12-, 13-, 14- and 16-h photoperiods. 2. Mean oviposition time (MOT) was delayed relative to dawn by approximately 0.5 h for each 1-h increase in photoperiod up to 14 h, but was similar for 14- and 16-h photoperiods. However, the 0.5 h/h regression for the time when half the
P D, Lewis, D, Backhouse, R M, Gous
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2002
The feeding and management of table-egg (white and brown shell) breeding birds was not included in this chapter because of the key management differences associated with feeding these breeders as opposed to the methods used for broiler breeders. The feeding of modern table-egg breeders does not require controlled feeding because, in general, the body ...
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The feeding and management of table-egg (white and brown shell) breeding birds was not included in this chapter because of the key management differences associated with feeding these breeders as opposed to the methods used for broiler breeders. The feeding of modern table-egg breeders does not require controlled feeding because, in general, the body ...
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Acute pectoral myopathy in broiler breeders
Avian Pathology, 1982An acute myopathy is described which principally affects the superficial pectoral muscle (Musculus pectoralis) of broiler breeders between 12 and 20 weeks of age. The disease is sporadic and associated with rapid death. The lesion is characterised histologically by a severe my o degeneration but with little or no cellular response. The cause is unknown.
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Observations on swollen head syndrome in broiler and broiler breeder chickens
Veterinary Record, 1989Chickens on 14 broiler breeder farms were examined at various times throughout their laying cycle. Antibodies to the turkey rhinotracheitis virus were common although they were not always accompanied by clinical signs of the swollen head syndrome. Ninety-nine broiler flocks were tested of which only 20 were serologically positive to the virus.
M, Pattison +3 more
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British Veterinary Journal, 1973
SUMMARY A survey was made to determine the incidence and types of salmonellae in broilers and broiler breeders received by the Lasswade Laboratory for post-mortem examination from 22 counties in Scotland. Eleven serotypes, of which typhimurium was the predominant, were isolated from 93 birds from a total of 7725 over a two-year period.
D D, Brown +3 more
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SUMMARY A survey was made to determine the incidence and types of salmonellae in broilers and broiler breeders received by the Lasswade Laboratory for post-mortem examination from 22 counties in Scotland. Eleven serotypes, of which typhimurium was the predominant, were isolated from 93 birds from a total of 7725 over a two-year period.
D D, Brown +3 more
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Spiking applications in broiler breeders and its effect on reproduction performance
World's Poultry Science Journal, 2023Bilgehan Yilmaz Dikmen, Saliha Sabah
exaly
Salmonella enteritidis infection in broilers and broiler breeders
Veterinary Record, 1988openaire +2 more sources
Avian Pathogenic Escherichia coli (APEC) in Broiler Breeders: An Overview
Pathogens, 2023Li Zhang +2 more
exaly