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Reproduction and Breeding Pigeon

Tim Schreiber, Ludger Kamphausen, Daniel Haag-Wackernagel
We examined 80 feral pigeons and their fecal samples from two feral pigeon lofts of the "Pigeon Action of Basel" (Switzerland) for different pathogens. The tested material harbored four pathogenic agents transmissible to humans (Chlamydia spp., Salmonella spec., Campylobacter jejuni, Cryptococcus neoformans) In addition several pathogens were found which are no zoonotic agents but potentially pathogenic for the pigeons themselves, such as Trichomonas gallinae, coccidia, helminths, ectoparasites and fungi. The number of pathogens and parasites detected in the fecal samples varied significantly between the two localities...
January 2015: Berliner und Münchener Tierärztliche Wochenschrift
Ivar Herfindal, Martijn van de Pol, Jan T Nielsen, Bernt-Erik Sæther, Anders P Møller
Environmental variation can induce life-history changes that can last over a large part of the lifetime of an organism. If multiple demographic traits are affected, expected changes in climate may influence environmental covariances among traits in a complex manner. Thus, examining the consequences of environmental fluctuations requires that individual information at multiple life stages is available, which is particularly challenging in long-lived species. Here, we analyse how variation in climatic conditions occurring in the year of hatching of female goshawks Accipiter gentilis (L...
May 2015: Journal of Animal Ecology
Vivian C Goerlich-Jansson, Martina S Müller, Ton G G Groothuis
Across various animal taxa not only the secondary sex ratio but also the primary sex ratio (at conception) shows significant deviations from the expected equal proportions of sons and daughters. Birds are especially intriguing to study this phenomenon as avian females are the heterogametic sex (ZW); therefore sex determination might be under direct control of the mother. Avian sex ratios vary in relation to environmental or maternal condition, which can also affect the production of maternal steroids that in turn are involved in reproduction and accumulate in the developing follicle before meiosis...
December 2013: Integrative and Comparative Biology
Nozomi Shimonohara, Christine H Holland, Tsang-Long Lin, William L Wigle
This study reports the gross and microscopic pathology of naturally occurring neoplasms in adult pigeons that were presented for necropsy at the Indiana Animal Disease Diagnostic Laboratory from 2001 to 2011. The study population consisted of white carneau and mixed-breed pigeons used in behavioral studies in the Department of Psychological Sciences at Purdue University. Twelve types of neoplasms or proliferative disorders were identified in 28 of 83 pigeons (33.7%). Five pigeons had two or three types of neoplasms-proliferative disorders...
March 2013: Avian Diseases
X Y Dong, M Zhang, Y X Jia, X T Zou
The present study examined the changes in serum biochemical values, hormone profiles and ovary prolactin receptor (PRLR) gene expression occurring in female domestic pigeons (Columba livia) under different breeding status and experience. The egg-laying pigeons had lower calcium, total protein, albumin, prolactin levels and higher oestrogen levels than those of incubating birds (p < 0.05). First-time breeders had higher (p < 0.05) progesterone levels and lower (p < 0.05) prolactin levels than that of experienced ones...
October 2013: Journal of Animal Physiology and Animal Nutrition
Cor Dijkstra, Bernd Riedstra, Arjan Dekker, Vivian C Goerlich, Serge Daan, Ton G G Groothuis
When the reproductive value of male and female offspring varies differentially, parents are predicted to adjust the sex ratio of their offspring to maximize their fitness (Trivers and Willard, Science 179:90-92, 1973). Two factors have been repeatedly linked to skews in avian offspring sex ratio. First, laying date can affect offspring sex ratio when the sexes differ in age of first reproduction, such that the more slowly maturing sex is overproduced early in the season. Second, position of the egg in the laying sequence of a clutch may affect sex ratio bias since manipulating the sex of the first eggs may be least costly to the mother...
September 2010: Behavioral Ecology and Sociobiology
Vivian C Goerlich, Cor Dijkstra, Ton G G Groothuis
To date, our understanding of the function of testosterone in female reproductive physiology is only marginal although there are indications that testosterone is involved in modulating follicular recruitment, growth, atresia, and ovulation. Studies elevating testosterone in breeding female birds have, in most instances, found detrimental effects, such as delayed clutch initiation or decreased clutch size. In our previous study, testosterone treatment of female homing pigeons delayed clutch initiation without diminishing fecundity...
July 1, 2010: Journal of Experimental Zoology. Part A, Ecological Genetics and Physiology
David Costantini
Despite the great deal of ecological research interest in modulators of offspring quality and consequences of reproduction on female status, we still know little about the relationships among diet quality, antioxidant capacity of egg components (yolk and albumen) and oxidative status of female birds. In this study, I compared the egg quality (egg size, albumen and yolk antioxidant capacity) and serum oxidative status (oxidative damage, total serum antioxidant capacity, and serum thiols) of female pigeons (Columba livia) fed with foods of different quality (standard quality and decreased quality)...
June 2010: Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology
David Costantini
The quality of diet can affect the oxidative status of an animal and its susceptibility to oxidative damage. However, such effects can be expected to differ among phases of life cycle (e.g., reproduction, migration, moult), because they face the animals with different nutrient requirements and levels of stress. In this study, I investigated the effects of diet quality (standard vs. decreased quality diet) on the patterns of variation in serum oxidative status (oxidative damage, serum antioxidant capacity, serum thiols) and body mass in male and female pigeons (Columba livia) across the incubation and chick-rearing phases...
June 2010: Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology
M Messana, J Kosters, C Grund
For raising pigeons free of herpes virus infection, 12 parental pigeons were monitored for shedding of pigeon herpes virus (PHV) during 18 weeks of reproduction. In most of the birds only a sporadic virus excretion, which was never associated with clinical signs could be observed. However, three out of seven squabs raised by their parents became infected during the first 3 weeks of life and all seven became PHV seropositive within 4 months. Therefore, we raised seven squabs hatched in an incubator by hand using heat-inactivated crop milk...
1997: Avian Pathology: Journal of the W.V.P.A
Dong-Ha Nam, Doo-Pyo Lee
To investigate the effects of heavy metal accumulations on breeding birds, we compared the egg size, eggshell thickness and some reproductive parameters in feral pigeon populations collected from Seoul and Ansan colonies. The results showed that concentrations of Pb in bone and Cd in kidney of adult pigeons in Seoul were three times higher than in Ansan colony. Significant positive correlation was also observed between Pb and Zn in bone and Cd and Zn in kidney of adult pigeons from Seoul, but not Ansan. This indicates that pigeons at Seoul may be affected more by the toxic Pb and Cd exposure in the environment rather than those at Ansan because of the antagonistic action of Zn against Pb and Cd toxicity...
August 1, 2006: Science of the Total Environment
Christian Rutz, Mark J Whittingham, Ian Newton
Age-dependent breeding performance is arguably one of the best-documented phenomena in ornithology. The existence of age-related trends has major implications for life-history theory, but the proximate reasons for these patterns remain poorly understood. It has been proposed that poor breeding performance of young individuals might reflect lack of foraging skills. We investigated this possibility in a medium-sized, powerful raptor-the northern goshawk Accipiter gentilis. Male goshawks are responsible for providing their females and their offspring with food...
March 7, 2006: Proceedings. Biological Sciences
Rubén Merino, Luisa R Bordajandi, Esteban Abad, Josep Rivera, Begoña Jiménez
The population of peregrine falcon (Falco peregrinus sbs. brookei) inhabiting the Regional Park of southeastern Madrid (RPSM), Spain, has experienced an increase of unsuccessful pairs (from 15% among a total of 20 pairs in 1995 to 55% among a total of 18 pairs in 2001). Traditionally, this area has been known to be contaminated with organochlorine compounds and toxic metals, which are known to be deleterious to the reproductive system of birds. During the breeding seasons of 2000 and 2001, contaminant residues were measured in unhatched eggs of peregrine falcons and liver of their main prey, to determine if they could be affecting the survival of the population...
August 2005: Environmental Toxicology and Chemistry
John M Opitz
In Madison I once worked with two postdoctoral fellows who had spent their youth in New York City and who, when asked what birds they knew both responded "why, pigeons and LBJ's!" (little brown jobbies). Despite their undoubted brilliance, they clearly had an educational deficiency not fixed by buying eggs and poultry at a grocery store. Though of enormous economic and nutritional importance to humans, turkeys and chickens constitute only a minute fraction of the disappearing avian life in our ecology. One could easily teach an entire middle or high school biology course around the reproduction, embryology, evolution, genetics, anatomy, special adaptations, virology, bacteriology, taxonomy, behavior, and extinctions of birds, as paradigmatic of all of life...
April 15, 2005: American Journal of Medical Genetics. Part A
Luís Palma, Pedro Beja, Paula C Tavares, Luís R Monteiro
Mercury (Hg) was determined in adult Bonelli's eagles (Hieraaetus fasciatus) and their avian prey, from samples of feathers collected between 1992 and 2001 at the nesting sites of 21 pairs in Southwest Portugal. Eagle Hg levels showed great variation, reflecting primarily differences in diet composition and food chain biomagnification. Concentrations were positively correlated with the dietary proportion of insectivorous and omnivorous birds (e.g. egrets, corvids and thrushes), with very low levels for pairs feeding mainly on herbivores (e...
April 2005: Environmental Pollution
G P Janssens, M Hesta, V Debal, J Debraekeleer, R O De Wilde
In the first experiment (Exp1), three consecutive breeding rounds were performed by two groups of six pigeon couples in order to study the impact of L-carnitine supplementation (80 mg x d(-1)) of parent pigeons on zootechnical performance. Both in the second and third experiments (Exp2, Exp3), one breeding round was performed by two groups of six pigeon couples to reveal the biochemical background of the increase in squab growth, the limitation of body weight decrease in male parent birds and the tendency for an improved cumulative feed efficiency due to L-carnitine supplementation in Exp1...
November 2000: Reproduction, Nutrition, Development
Ramachandran, Patel, Patel
The effect of melatonin, methoxytryptophol (ML), methoxytryptamine (MT) and parachlorophenylalanine (p-CPA) on the mass and histology of the testes and the adrenal and thyroid glands and on serum thyroid hormone levels have been studied in the recrudescent phase of the feral pigeon Columba livia. All the pineal indoles showed a common anti-gonadal effect, resulting in the arrest of spermatogenesis and the degeneration of germ cells. Treatment with melatonin resulted in adreno-cortical enlargement and medullary hypertrophy, whereas ML, MT and p-CPA induced medullary enlargement and hypertrophy without having much influence on the cortex...
1996: Journal of Experimental Biology
J E Grimes, M F Small, L L French, L W Sneed, A A Andersen
Chlamydia psittaci was isolated from the spleen of a moribund white-winged dove (Zenaida asiatica). The isolate was serotyped as the serovar B that is commonly isolated from pigeons. A fourfold increase in the titer of antichlamydial IgM activity occurred in that bird in paired serum samples tested by chlamydial elementary body agglutination (EBA) and a greater than or equal to fourfold decrease of IgG occurred by direct complement fixation (DCF). The increases or decreases of EBA and DCF titers in other clinically ill birds that were treated with tetracycline varied, as normally occurs in cases of avian chlamydiosis...
April 1997: Avian Diseases
J Kösters, R Korbel
The biology and behaviour of urban pigeons is presented in this article. When changes in the population density of pigeons by capture, shooting, or intoxication are intended, the breeding behaviour has to be considered. A constant reduction of pigeons according to the law for the prevention of cruelty against animals can only be achieved by a restricted feeding if feeding at all.
February 1997: DTW. Deutsche Tierärztliche Wochenschrift
R K Murton, R J Thearle, B Lofts
No abstract text is available yet for this article.
May 1969: Animal Behaviour
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