Results 51 to 60 of about 4,467 (158)

The welfare of broiler breeders

Animal Welfare, 1999
In August 1998, the UK's Farm Animal Welfare Council (FAWC) published its most recent report: addressing the welfare of broiler breeders. Some 780 million broiler chicks are produced annually in the UK and at any one time the national population of broiler breeder hens that produce these chicks is about 6 million.
openaire   +1 more source

A portrait of air quality in Canadian hatching egg houses: Seasonal variations and health impacts on workers and broiler breeder birds

Journal of Applied Poultry Research
Summary: Air quality in poultry barns affects the respiratory health of both workers and animals. While data exist for broiler and laying hen operations, broiler breeder facilities are less studied.
Valérie Létourneau, Mahsa Baghdadi, Kim Robitaille, Nathan Dumont-Leblond, Florent Rossi, Geneviève Dion, Caroline Duchaine, Marie-Lou Gaucher   +7 more
doaj   +1 more source

Comparison of the Ability of Different Types of Birds to Derive Energy from Corn and Soybean Meal [PDF]

Poultry Science Journal
This study evaluated the ability of different types of birds to derive energy from corn and soybean meal (SBM) using the reference diet substitution method. The corn and SBM were combined into a reference diet at 60 and 30%, respectively.
Nahid Zahroojian, Hossein Moravej, Mojtaba Zaghari, Saied Aminzadeh   +3 more
doaj   +1 more source

Prevalence and Characteristics of Salmonella spp. by Production Stage in Integrated Broiler Operations in Korea

Veterinary Medicine and Science
Background Vertically integrated broiler production systems enable efficient poultry production but may facilitate the dissemination of Salmonella throughout the production chain.
Hyeong Jeong Choi, Young Ju Lee
doaj   +1 more source

Effect of Storage Time, Broiler Breeder Strain, and Age on Hatchability and First-Week Broiler Performance [PDF]

Brazilian Journal of Poultry Science
Managing fertile eggs and minimizing seasonal impacts is crucial in poultry farming. This study evaluated the effects of the storage time of fertile eggs, broiler breeder strain, and age on hatchability and first-week broiler performance.
ALD Volpe, A Slaviero, A Scher, PV Molinari, MW Gerber, VM Marcon, F Moreira, I Bianchi, E Schwegler, CB Tanure, V Peripolli   +10 more
doaj   +1 more source

Effect of Broiler Breeder Age and Glutamine Supplementation on the Development of the Intestinal Mucosa of 7-Day-Old Chicks

Brazilian Journal of Poultry Science, 2016
The aim of this study was to evaluate the possible effects of glutamine and broiler breeder age on the development of intestinal mucosa in broiler chicks during first week of age. For this purpose, 32 one-day-old broiler chicks were distributed according
A Maiorka, AVF Silva, E Santin, F Dahlke, LDG Bruno, IC Boleli, M Macari, H Trautenmuller   +7 more
doaj   +1 more source

Studies on the Biotin Requirement of Broiler Breeders ,

Poultry Science, 1972
Abstract The minimum requirement of biotin for maximum hatchability of eggs and livability of chicks was determined for broiler breeder hens maintained in individual cages. Groups of hens were fed casein-gelatin, glucose diets containing 20, 40, 60, 100, 180 and 340 μg. biotin/kg. of diet. The requirement was found to be approximately 100 μg.
L E, Brewer, H M, Edwards
openaire   +2 more sources

Sexual Maturity in Broiler Breeder Males

Poultry Science, 1978
Sexual maturity and fertility of two lines of broiler breeder males, one commercial and one experimental, were evaluated individually in order to determine the earliest age at which they could be expected to produce viable spermatozoa capable of producing acceptable fertility.
openaire   +2 more sources

INVESTIGATION OF MYCOPLASMA SYNOVIAE SEROPREVALENCE IN BROILER BREEDER FARMS IN SOUTH BAČKA REGION

Archives of Veterinary Medicine, 2017
Mycoplasma synoviae is known to cause respiratory disorders, synovitis, subclinical infections, air sacculitis and eggshell apex abnormalities in domestic poultry worldwide.
Milena Samojlović, Marko Pajić, Biljana Božić, Slobodan Knežević, Miloš Pelić, Dalibor Todorović, Sava Lazić   +6 more
doaj   +1 more source

Iron requirements of broiler breeder hens

Poultry Science, 2017
A study was conducted to investigate Fe requirements of broiler breeders. One-hundred-fifty-six Cobb 500 broiler breeder hens were individually placed in electrostatically painted cages at 22 weeks. The study was composed of an adaptation phase, in which hens were fed corn-soy-wheat bran diets until 35 wks.
Diogo, Taschetto, Sergio Luiz, Vieira, Clara Roselina, Angel, Catarina, Stefanello, Liris, Kindlein, Marco Antonio, Ebbing, Cristina Tonial, Simões   +6 more
openaire   +2 more sources