Attempts on freezing the Greylag (Anser anser L.) gander semen

Łukaszewicz, Ewa; Chrzanowska, Małgorzata; Jerysz, Anna; Chełmońska, B.

doi:10.1016/s0378-4320(03)00119-2

Cited by 35 publications

(22 citation statements)

References 9 publications

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“…The Semen Quality Factor, which comprises three the most important semen characteristics, varied among individuals from 2.7 to 208.4, which was caused mostly by differences in the sperm concentration and ejaculate volumes. For geese this similar large differences in SQF values were observed within domesticated (19.26–56.52) and wild greylag goose ( Anser anser L.) (1.06–1.64) [Łukaszewicz et al, 2004]. Durrant et al [1995] calculated the semen quality index combining semen volume, sperm concentration and motility score, to generate a single number to facilitate the comparison of males and reproductive season for three Chinese pheasant species.…”

Section: Discussionsupporting

confidence: 56%

Characteristics of fresh semen of captive‐bred capercaillie Tetrao urogallus L.

Łukaszewicz

Kowalczyk

Rzońca³

2010

Zoo Biology

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In Poland Capercaillie (Tetrao urogallus L.) is one of the most seriously endangered grouse species. The ability of semen collection and its utilization for Capercaillie female insemination would allow overcoming some fertility problems observed in captive-bred populations and thus reduce the rate of loss of genetic diversity. The present experiment was carried out on 13 individuals: eight males were kept with females and five alone. From each male, semen was collected four times, every second day, and overall semen appearance (color, viscosity), ejaculate volume, spermatozoa concentration, motility and morphology were examined. Ejaculates suitable for artificial insemination (AI) were obtained from 11 individuals. The volume of ejaculates varied from one drop (noted as 0.010 ml) to 0.180 ml, whereas spermatozoa concentration varied from 100 × 10(6) ml(-1) to 1950 × 10(6) ml(-1). The total amount of live spermatozoa for males kept with females varied from 82.0 to 98.3% (92.9% on average) and among them, from 38.7 to 82.0% were morphologically normal (67.6% on average), whereas for solitary males these values were the following: from 93.7 to 98.7 of total live (96.3% on average) and from 45.0 to 85.3% live normal cells (65.7% on average). No significant group effect was observed for above traits. Semen from males kept with females contained significantly (P<0.01) fewer cells with bulb head (12.2% vs. 21.6%), but higher numbers of bent neck spermatozoa (3.0 vs. 2.1%) and with other deformities (10.0 vs. 6.8%); however, for last two forms existing differences were not significant. Results obtained indicate the possibility of collecting valuable ejaculates from captive-bred Capercaillie, both kept with or without females, which makes possible the application of AI in order to increase the progeny number and gene exchange of this species across time and geographical distance.

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Section: Discussionsupporting

confidence: 56%

Characteristics of fresh semen of captive‐bred capercaillie Tetrao urogallus L.

Łukaszewicz

Kowalczyk

Rzońca³

2010

Zoo Biology

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“…In addition, the semen characteristics of the ganders fed with the supplemental diet in this study were better than that observed with semen from White Italian [5, 6], White Koluda [33], wild Greylag [34], Cuban [35], and Hungarian geese [10]. …”

Section: Discussionmentioning

confidence: 63%

Effect of Dietary Selenium and Vitamin E on Ganders’ Response to Semen Collection and Ejaculate Characteristics

Jerysz

Łukaszewicz

2013

Biol Trace Elem Res

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Compared to other domestic bird species, geese exhibit the lowest reproductive efficiency (poor semen quality, low egg production, and poor fertility and hatchability rates). From an economic perspective, it is a necessity of improve these reproductive traits. Studies have demonstrated that the essential trace element—selenium—plays key roles in testicular development and the maintenance of spermatogenesis. The aim of the present study was to determine the effect of feed supplementation with organic selenium and vitamin E on ganders’ response to manual semen collection and semen quality. Sixteen 3-year-old White Koluda ganders were randomly divided into two groups. The control group was provided commercial feed while the experimental group was provided with the same commercial feed supplemented with selenium (0.3 mg/kg) and vitamin E (100 mg/kg). The response of individual ganders from both groups to manual semen collection and the quality of the semen collected were evaluated. The supplements increased (P ≤ 0.05) the frequency and decreased the time interval of a complete ejaculatory response of the ganders to manual semen collections (82.7 % supplement vs. 73.5 % control). Males from the supplemented group had significantly higher (P ≤ 0.01; P ≤ 0.05) ejaculate volumes, sperm concentrations, and percentages of viable sperm and lower percentages of immature sperm (spermatids). Lipids peroxidation, expressed in terms of the malondialdehyde concentration, was lower (P ≤ 0.01) in semen of the supplemented group (0.172 nmol/50 × 106) as compared to the controls (0.320 nmol/50 × 106). Moreover, the duration of the reproductive period of the ganders in the experimental group was 1 week longer. The results show that supplemental dietary selenium and vitamin E improved both the ganders’ response to manual semen collection and semen quality. We conclude that such feed supplementation could lead to greater economic benefits through increased reproductive efficiency within the goose production industry.

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“…During the reproductive period (February-May) semen was collected twice a week (Monday-Friday) by dorso-abdominal massage (Lukaszewicz et al, 2004). In the freshly sampled semen the volume of ejaculates and the concentrations of spermatozoa were calculated in a haemocytometer using eosin-3% NaCl solution, and sperm motility was evaluated under light microscope (Olympus).…”

Section: Radioimmunoassay (Ria) Of Plasma Steroidsmentioning

confidence: 99%

Effects of dietary meals containing different levels of phytoestrogens on reproductive function in Bilgoraj ganders

Opałka

Kugla-Owczarska

Kamińska

et al. 2008

Acta Veterinaria Hungarica

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The aim of this study was to investigate how long-term feeding of ganders with diets containing different levels of phytoestrogens affects the morphometry of testes, plasma steroid levels, sperm parameters and reproductive performance. Male Bilgoraj geese were fed diets containing grass meal (with low phytoestrogen levels) and those containing alfalfa meal and soybean meal (with higher levels of phytoestrogens). Testes were obtained from ganders at the peak of mating and the ongoing laying period as well as at the beginning of photorefractoriness. The morphometric parameters were measured in frozen testicular sections. Blood was collected monthly from December to June, and plasma testosterone, androstenedione and corticosterone concentrations were determined. During the mating season, semen was collected and its quantity and quality were investigated. In the flocks (ganders with geese) reproductive output was noted. Seasonal changes were observed in the morphology of testes and in plasma testosterone, androstenedione and corticosterone concentrations in ganders. The feeding of ganders with dietary meals containing higher levels of phytoestrogens did not affect the plasma steroid contents or the majority of the morphometric parameters of testes, except for the height of the seminiferous epithelium, which was lowered. Moreover, diets with higher levels of phytoestrogens decreased the volume of ejaculates and the percentage of normal spermatozoa. However, these changes were not reflected in the fertilisation rates.

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Attempts on freezing the Greylag (Anser anser L.) gander semen

Cited by 35 publications

References 9 publications

Characteristics of fresh semen of captive‐bred capercaillie Tetrao urogallus L.

Characteristics of fresh semen of captive‐bred capercaillie Tetrao urogallus L.

Effect of Dietary Selenium and Vitamin E on Ganders’ Response to Semen Collection and Ejaculate Characteristics

Effects of dietary meals containing different levels of phytoestrogens on reproductive function in Bilgoraj ganders

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