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Analysis of the effectiveness of sexed semen in a selected herd of dairy cows

100%

Janus E., Sablik P., Swiecilo A.

Acta Scientiarum Polonorum. Zootechnica

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2022

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tom 21

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nr 2

2

Assessment of reproductive parameters of privately bred zebra finch (Taeniopygia guttata)

100%

Ostrowski D., Banaszewska D., Biesiada-Drzazga B.

Acta Scientiarum Polonorum. Zootechnica

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2019

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tom 18

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nr 1

3

The effect of feeding ration, enriched in synthetic and natural beta-carotene on the selected indicators of health condition of the cows and on reproduction parameters

86%

Halik G., Lozicki A., Dymnicka M., Arkuszewska E., Zielinska M., Rutkowska H.

Annals of Warsaw University of Life Sciences - SGGW. Animal Science

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2016

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tom 55[2]

The effect of feeding ration, enriched in synthetic and natural ß-carotene on the selectedindicators of health condition of the cows and on reproduction parameters. The studies were conducted on 40 Simmental cows, classified into 4 groups, 10 animals in each group. The experiment was performed since the 4th week before calving until 12 week of lactation. In group I (control), standard nutrition, based on grass silage and maize silage was employed. In group II 400 mg of synthetic ß-carotene/cow/day to the ration was introduced. In group III, a part of maize silage was replaced by pumpkin silage in such ratio as to receive by 400 mg higher intake of natural ß-carotene/cow/day as compared to group I. The rations in group IV were not balanced in respect of the content of ß-carotene; there was only the replacement of 60% DM of maize silage by the pumpkin silage in this group. During the studies, blood samples were collected: to 5 hours after calving and on 4 and 12 week of lactation. Milk samples were collected on 4, 8 and 12 week of lactation and on 23 day after the first insemination. Morphological parameters of blood and concentration of ß-hydroxy-butyric acid in blood serum were analysed. In milk, somatic cell count and the level of progesterone on 23 day after insemination were determined. In group I during the following measurements were found the lowest levels of part of the morphological parameters of blood: after calving the lowest level of RBC (significant difference compared to group II), at 4th week of lactation the lowest level of HCT, and at 12 week of lactation RBC and HCT. The significant differences in somatic cell count in the milk, were recorded in the 8th week of lactation –significantly higher in group I as compared to group III. The significant differences between the groups in respect of BHM acid concentration was found only after calving. The highest BHM level occurred in the cows from group I and it was significantly higher in relation to group II and IV. In the cows from groups II, III and IV, the first heat occurred earlier; these animals had also shorter inter-gestation period. Also, the progesterone level, as determined on 23 day after insemination, was higher in the milk of cows from groups II, III and IV as compared to the animals from group I.

4

Effect of antioxidant supplemented-diet for blue fox on chosen reproductive and performance parameters

86%

Likos-Grzesiak B., Martyna J., Wnuk W., Saba L., Nowakowicz-Debek B., Ondrasovic M.

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2008

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tom 26

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nr 3

1-8

5

Evaluation of reproductive parameters in the Czech population of dairy cattle

86%

Hradecka E., Rehout V., Citek J.

Animal Science Papers and Reports. Supplement

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2004

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tom 22

|

nr 2

6

The antiviral drug ribavirin reversibly affects the reproductive parameters in the male Wistar rat

72%

Narayana K., D'Souza U. J. A., Narayan P., Kumar G.

Folia Morphologica

|

2005

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tom 64

|

nr 2

65-71

The present study was planned to evaluate the toxic effects of ribavirin on the reproductive parameters in the male Wistar rat. Rats (11–13 weeks old) were treated with 5 injections (i.p.) of 20, 100 or 200 mg/kg/day ribavirin at intervals of 24 h. The testes were processed for histopathological analysis on days 14, 35, 70 and 105 after the last exposure. The parameters studied were body weight, the weights of the testis, epididymis, seminal vesicle and prostate, seminiferous tubular diameter (STD), epithelial height (SE), epithelial sloughing, incidence of stage XIV tubules, sperm abnormality and total serum level of testosterone. Data were analysed by ANOVA and the Bonferroni post hoc test for significances between different groups. There was a decrease in body weight and organ weights, excluding those of the testis and epididymis, against control at higher dose-levels. Ribavirin induced the formation of vacuoles, gaps and sloughing of the seminiferous epithelium. The STD, SE and the incidences of stage XIV tubules decreased on days 14 and 35. Ribavirin also induced the formation of sperm with microcephaly and cephalocaudal junction defects, with or without fibrils jetting out. All these morphological defects recovered to control limit by day 105. The serum level of testosterone was decreased at all dose-levels and time points, although recovery had started by day 105. In conclusion, ribavirin is gonadotoxic in male rats but the effects are reversible after a period of 105 days. However, the endocrine-disrupting properties of ribavirin persist beyond this period.

7

Fertility and hatchability of Slovak chicken genetic resource

72%

Benkova J., Baumgartner J.

Zeszyty Naukowe. Przegląd Hodowlany

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1997

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tom 31

8

Effect of age and temperament type on reproductive parameters of female raccoon dogs (Nyctereutes procyonoides Gray)

72%

Lapinski S., Bzymek J., Niedbala P., Migdal L., Zon A., Lis M.

Annals of Animal Science

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2013

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tom 13

|

nr 4

9

Effect of the quality of handling and care on the reproduction parameters of mink

72%

Seremak B., Dziadosz M., Lasota B., Felska-Blaszczyk L., Plawski K., Maslowska A., Mielenczuk G.

Acta Scientiarum Polonorum. Zootechnica

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2011

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tom 10

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nr 3

The aim of this study was to determine the effect of animal handling, defined as the so-called human factor, on the level of reproductive parameters of female mink.We analyzed some reproductive parameters of 6 348 one- and two-year-old Scanbrown females, such as fertility, prolificacy and rate of rearing the young. Mink were divided into four groups; group I and II consisted of one-year-old females, group III and IV comprised females at age two years. Individual groups of females were operated by four different teams of workers. The results indicate a strong influence of the quality of care on the parameters of breeding.

10

Feed additives in the diet of high-producing dairy cows

72%

Radzikowski D., Milczarek A., Janocha A., Ostaszewska U., Niedzialek G.

Acta Scientiarum Polonorum. Zootechnica

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2020

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tom 19

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nr 4

11

Reproductive phenology and size structure characteristics of Hypseleotris agilis (Herre, 1927) in Lake Mainit, Philippines

72%

Jumawan J. C., Hidalgo P. M. P., Seronay R. A.

International Letters of Natural Sciences

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2020

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tom 80

12

Reproduction parameters in a natural population of topmouth gudgeon, Pseudorasbora parva, and its condition and food characteristics with respect to sex dissimilarities

72%

Adamek Z., Siddiqui M. A.

Polskie Archiwum Hydrobiologii

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1997

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tom 44

|

nr 1-2

13

Vegetative and reproductive parameters of introduced plum cultivars

72%

Vitanova I., Dimkova S., Ivanova D.

Journal of Fruit and Ornamental Plant Research

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2004

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tom 12

|

nr Spec.ed.2

14

Habitat related differences in age structure and reproductive parameters of red foxes

72%

Gortazar C., Ferreras P., Villafuerte R., Martin M., Blanco J. C.

Acta Theriologica

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2003

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tom 48

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nr 1

We studied the age-structure and the reproductive parameters in two samples of red foxesVulpes vulpes (Linnaeus, 1758) from two contiguous areas in the Ebro valley (NE Spain) differing in the level of deliberate culling and in the habitat quality. Percent of juvenile foxes in the semiarid steppe (under higher persecution) was lower (53%) than in the irrigated highly productive “vegas” (67%). Conversely, foxes in the “vegas” (more favourable habitat) had a larger litter size (3.9 ± 0.23 cubs per female) and a higher amount of barren vixens (19.3%) than in the steppe (3.3 ± 0.12 cubs per female, and 1.7% of barren vixens). In this study, migration due to juvenile dispersal does not hide the effects of the habitat on fox population dynamics, despite the proximity between both areas. The results are discussed in relation to previous studies on red fox population dynamics.

15

Reproductive parameters, kidney fat index, and grazing activity relationships between the sexes in Cantabrian chamois Rupicapra pyrenaica parva

72%

Perez-Barberia F. J., Mutuberria G., Nores C.

Acta Theriologica

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1998

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tom 43

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nr 3

Reproductive parameters, kidney fat index and grazing activity of both sexes of Cantabrian chamois Rupicapra pyrenaica parua (Cabrera, 1910) in relation to age, season and year are presented and compared with those of other chamois subspecies and cervids. Females younger than three years old had not ovulated. Ovulated ovaries were significantly heavier than non-ovulated ovaries in March-April, and these differences remained until the following rutting season. All pregnant females carried a single foetus. A significant decrease in the percentage of parous females was found in 3-11 years age class (94%) compared with > 11 years (50%). There were no differences in the kidney fat index (KFI) between age classes for either of the sexes throughout the study period. Females showed a significant higher KFI in August-October 1993 than in August-October 1992, coinciding with a significantly greater abundance of grass in 1993. Throughout the year KFI in females showed less fluctuations than in mates. Males began the rutting season with a significant KFI three times higher than did females. However, by the spring, the KFI of the mates had fallen to half of that of the females. In March-April pregnant females showed a significantly higher KFI than non-pregnant or late-conception adult females. Feeding activity of females and sward height throughout the year were inversely related. Females grazed more actively than males in the summer, rut and spring, except in winter where no differences in feeding activity between sexes were found. The differences in the KFI and feeding activity are discussed in relation to the parental investment and the sexual dimorphism-body size theory.

16

Results of reproduction and production parameters of mother pig breeds in the Slovak Republic

72%

Mlynek J., Paska I., Kovac L.

Biuletyn Naukowy

|

2000

|

tom 07

17

Endophytic Beauveria bassiana (Ascomycota: Hypocreales) alters Helicoverpa gelotopoeon`s (D.) (Lepidoptera: Noctuidae) life cycle and reproductive parameters

58%

Vianna F., Pelizza S., Russo L., Allegrucci N., Scorsetti A.

Journal of Plant Protection Research

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2018

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tom 58

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nr 4

Bollworms comprise the most harmful and economically relevant species of lepidopteran. Helicoverpa gelotopoeon (D.) (Lepidoptera: Noctuidae) is native to America and affects many crops. Tobacco is an industrial crop in which methods of pest control rely mainly on the application of insecticides. To develop new eco-friendly strategies against insect pests it is very important to overcome the side effects of insecticides. The utilization of fungal entomopathogens as endophytes is a new perspective that may accomplish good results. The present study aimed to evaluate the ability of endophytic Beauveria bassiana (Bals.-Criv.) Vuill. to affect H. gelotopoeon life parameters and feeding behavior on tobacco plants. Beauveria bassiana LPSC 1215 as an endophyte did not reduce the amount of vegetal material consumed by H. gelotopoeon larvae but affected the life cycle period of the plague, particularly the larval and adult stages. Also, egg fertility was affected since adults laid eggs that were not able to hatch. The results of this investigation provide new information on endophytic entomopathogen potential to be incorporated in Integrated Pest Management (IPM) programs.

18

Influence of long-term vaccination of a breeding herd of pigs against PCV2 on reproductive parameters

58%

Pejsak Z., Kusior G., Pomorska-Mol M., Podgorska K.

Polish Journal of Veterinary Sciences

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2012

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tom 15

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nr 1

The objective of the study was to evaluate an efficacy of sows vaccination protocols in the herd with serious problems affecting efficacy of reproduction. The study was performed in a large pig herd with about 1200 sows. Before vaccination against PCV2, farrowing rate in this farm was about 65%. Sows, boar and replacement gilts were immunized using Circovac vaccine (Merial, France) according to producer’s recommendations. Parameters of production were analyzed since 2007 until 2010 in selected batches of sows inseminated at the same weeks of the year (17th, 18th, 19th and 20th) to eliminate seasonal variability. In total, 940 sows were subjected to the study. No significant changes in management during these years were introduced. The applied protocol of sow herd long-term vaccination proved to be very efficient. All measured production parameters: reproduction rate, number of piglets born alive, birth weight of piglets and number of piglets weaned per a litter improved after implementation of immunization program. Moreover, further improvement was observed with vaccination in the following reproduction cycles. The most spectacular effect of vaccination regarded average farrowing rate that increased from 64.76% in control group to 86.93% after basic vaccination. Two years after implementation of vaccination program this parameter reached 93.6%. Number of piglets weaned per sow per a litter improved from 10.31 to 11.74 after one year of vaccination and remained relatively stable through the following year. Simultaneously, the percentage of newborn piglets with birth weight < 1 kg decreased significantly (p < 0.05). To summarize, vaccination against PCV2 influenced positively the insemination rate, number of piglets born alive and weaned per litter as well as birth body weight and percentage of piglets weighing < 1 kg.

19

Patterns of variation in reproductive parameters in Eurasian lynx (Lynx lynx)

58%

Nilsen E. B., Linnell J. D. C., Odden J., Samelius G., Andren H.

Acta Theriologica

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2012

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tom 57

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nr 3

Detailed knowledge of the variation in demographic rates is central for our ability to understand the evolution of life history strategies and population dynamics, and to plan for the conservation of endangered species. We studied variation in reproductive output of 61 radio-collared Eurasian lynx females in four Scandinavian study sites spanning a total of 223 lynx-years. Specifically, we examined how the breeding proportion and litter size varied among study areas and age classes (2-year-old vs. >2-year-old females). In general, the breeding proportion varied between age classes and study sites, whereas we did not detect such variation in litter size. The lack of differences in litter sizes among age classes is at odds with most findings in large mammals, and we argue that this is because the level of prenatal investment is relatively low in felids compared to their substantial levels of postnatal care.

20

Nestbox use and reproductive parameters of Tree Sparrows Passer montanus: are they affected by the presence of old nests?

58%

Garcia-Navas V., Arroyo L., Sanz J. J.

Acta Ornithologica

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2008

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tom 43

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nr 1

32-42

There is a controversy over the effects of old nest reuse on the breeding biology of hole nesters. Some authors have shown that the presence of old nest material could increase ectoparasite pressure and/or reduce cavity size, whereas others argue that it could facilitate nest-building and serve as an informative cue for breeding birds. However, the possible functions of old nests may not be limited to the reproductive period in burds that perform autumnal courtship or use nest cavities as shelters during the winter season, as is the case with the Tree Sparrow. The importance of the presence of old nest material on nest box choice during the non-breeding period and its implications on the subsequent breeding performance of this multi-brood species are assessed. Occupancy rates and reproductive parameters (such as phenology, clutch size, nestling condition, breeding success) were compared between woodcrete and wooden nest boxes with and without old nest material inside. During the non-breeding period no effect of box type or its content on nest box selection was discovered, but in spring it was found that the strong preference of birds for breeding in woodcrete nest boxes was independent of the presence of old nests. In relation to this latter point, evidence was found that old nest reuse could negatively affect the reproductive output of Tree Sparrows: clutches were laid later, nestlings had longer wings (which presumably fledged earlier) and reproductive success was lower in nest boxes containing old nest material. The results of this study suggest that, taking the non-breeding and breeding seasons as a whole, the accumulation of old nest material seems to be detrimental rather than advantageous to this species.

Ograniczanie wyników

Analysis of the effectiveness of sexed semen in a selected herd of dairy cows

Assessment of reproductive parameters of privately bred zebra finch (Taeniopygia guttata)

The effect of feeding ration, enriched in synthetic and natural beta-carotene on the selected indicators of health condition of the cows and on reproduction parameters

Effect of antioxidant supplemented-diet for blue fox on chosen reproductive and performance parameters

Evaluation of reproductive parameters in the Czech population of dairy cattle

The antiviral drug ribavirin reversibly affects the reproductive parameters in the male Wistar rat

Fertility and hatchability of Slovak chicken genetic resource

Effect of age and temperament type on reproductive parameters of female raccoon dogs (Nyctereutes procyonoides Gray)

Effect of the quality of handling and care on the reproduction parameters of mink

Feed additives in the diet of high-producing dairy cows

Reproductive phenology and size structure characteristics of Hypseleotris agilis (Herre, 1927) in Lake Mainit, Philippines

Reproduction parameters in a natural population of topmouth gudgeon, Pseudorasbora parva, and its condition and food characteristics with respect to sex dissimilarities

Vegetative and reproductive parameters of introduced plum cultivars

Habitat related differences in age structure and reproductive parameters of red foxes

Reproductive parameters, kidney fat index, and grazing activity relationships between the sexes in Cantabrian chamois Rupicapra pyrenaica parva