Results 31 to 40 of about 92,373 (234)
Relationship between hatchling length and weight on later productive performance in broilers [PDF]
, 2008 Hatchling length and weight are used as tools to measure hatchling quality. However, the relationship between these parameters and later performance are not well known.
Brand, H., van den +3 more
core +1 more source
Restricted Feeding of Broiler Breeders
Poultry Science, 1983 Two experiments were conducted to compare the effects of various feed restriction programs during the growing and laying periods on body weight, egg production, fertility, and hatchability. In the first experiment, Cobb color-sexed broiler breeders were fed one of three grower programs (full feed, skip-a-day, or low protein) from 8 to 24 weeks of age ...
H R, Wilson, D R, Ingram, R H, Harms
openaire +2 more sources
The chicken embryo and its micro environment during egg storage and early incubation [PDF]
, 2008 When egg storage periods are prolonged (>7 days), hatchability and chick quality declines. The reason for this decline has been investigated, but is still not completely understood.
Brand, H., van den +3 more
core +1 more source
Metformin modulates the gut microbiome in broiler breeder hens
Frontiers in Physiology, 2022 Broiler breeder hens, the parent stock of commercial broiler chickens, are genetically selected for rapid growth. Due to a longer production period and the focus of genetic selection on superior carcass traits in their progeny, these hens have the ...
Emily Van Syoc +13 more
doaj +1 more source
Sodium Chloride for Broiler Breeders
Poultry Science, 1983 Two experiments, each of 224 days duration, were conducted with Cobb broiler breeders, 32 weeks of age, to determine their response to supplemental dietary sodium chloride levels ranging from .12 to .48% in a corn-soybean meal diet. Average hen-day egg production, daily feed intake, feed required per dozen eggs, and egg specific gravity were not ...
B L, Damron, H R, Wilson, R H, Harms
openaire +2 more sources
Manganese requirements of broiler breeder hens
Poultry Science, 2020 The present research was conducted to assess Mn requirements of broiler breeder hens. One hundred and twenty Cobb 500 hens, 22 wk of age, were individually allocated in cages. After fed a Mn-deficient diet (22.2 ppm), hens were randomly placed in treatments having 6 increments of 30-ppm Mn. All trace minerals were from laboratory grade sources being Mn
T.L. Noetzold +5 more
openaire +3 more sources
Housing and management of broiler breeders and turkey breeders.
, 2012 AbstractThis chapter describes the housing and management of broiler breeders and turkey breeders in Europe. The majority of broiler breeders in Europe are the standard, fast growing genotype, but 18-20% of the broiler breeders are dwarf parental females that produce standard and alternative (medium or slow growing) broilers.
de Jong, I.C., Swalander, M.
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Journal of Applied Animal Research, 2019 Effects of multi-strain (Lactofeed) and mono-strain (Pediguard) probiotics on broiler breeder performance and expression of toll-like receptors (TLR) were evaluated.
Maryam Aalaei +5 more
doaj +1 more source
Seroprevalence of avian metapneumovirus infection in broiler and broiler breeder chickens in Iran
Veterinární Medicína, 2011 Avian metapneumovirus causes an acute highly contagious upper respiratory tract infection primarily of turkeys and chickens. The disease can cause significant economic losses in turkey and chicken flocks, particularly when exacerbated by secondary ...
M. Rahimi
doaj +1 more source
Sodium Requirement for Broiler Breeder Hens
Poultry Science, 1995 Two experiments were conducted with Arbor Acres hens to determine their Na requirement. Sodium chloride was added to a corn-soybean meal diet to furnish daily intakes of 35, 65, 95, 125, and 150 mg per hen in Experiment 1. The 150 mg level was replaced with 180 mg in Experiment 2. The hens were maintained in floor pens with wood shavings used as litter.
R H, Harms +3 more
openaire +2 more sources