منابع مشابه
Physical traits and reproductive success in male primary broiler breeders
Genetic selection for high yield in primary broiler breeder males may result in skeletal modifications that impede sperm transfer upon mating. In addition, fluctuating asymmetry (FA) in bilateral traits has been shown to reliably indicate male reproductive potential in some avian species. The goal of this study was to determine if physical variation due to genetic selection and FA could explain...
متن کاملSurgical Management of Obstructive Urolithiasis in a male Cow calf
Department of Veterinary Surgery & Radiology. College of Veterinary Science and Animal Husbandry. Anjora, Durg, C.G 491 011, India. * Correspodning author present address : Div. of Clinical Veterinary Medicine Faculty of Veterinary Sciences & Animal Husbandry, SKUAST-K Shuhama-190 006, India * Corresponding author E-mail: [email protected] Published online at www.veterinaryworld.org on 25-...
متن کاملPhotostimulation of male broiler breeders to different photoperiods
________________________________________________________________________________ Abstract The effect of photostimulation of male broiler breeders (n = 144) to different photoperiods (8-h control and 9, 9.5, 10, 10.5, 11, 11.5, 12, 12.5, 13, 14 and 18 h) applied at 20 weeks of age, on age at first semen production, testis weights, as predicted by comb area, and semen characteristics at the repor...
متن کاملPaternity and Dominance Loss in Male Breeders: The Cost of Helpers in a Cooperatively Breeding Mammal
Paternity insurance and dominance tenure length are two important components of male reproductive success, particularly in species where reproduction is highly skewed towards a few individuals. Identifying the factors affecting these two components is crucial to better understand the pattern of variation in reproductive success among males. In social species, the social context (i.e. group size...
متن کاملUrolithiasis.
Urolithiasis is the most common urinary problem in male ruminants, and one of the most common emergencies in male goats and sheep. This disease has substantial welfare implications because it causes severe pain and it has a high fatality rate. The expense associated with veterinary care and loss of affected animals has a strong economic impact on pet owners and farmers.
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ژورنال
عنوان ژورنال: International Journal of Poultry Science
سال: 2011
ISSN: 1682-8356
DOI: 10.3923/ijps.2011.839.841