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Thursday, July 16, 2020 | History

2 edition of Microorganisms in dairy bull semen as related to fertility found in the catalog.

Microorganisms in dairy bull semen as related to fertility

Szu-Hsiao Wu

Microorganisms in dairy bull semen as related to fertility

by Szu-Hsiao Wu

  • 316 Want to read
  • 21 Currently reading

Published by Agricultural Experiment Station, Oregon State College in Corvallis .
Written in English

    Subjects:
  • Cattle -- infertility.,
  • Semen.,
  • Infertility in animals.

  • Edition Notes

    StatementSzu-Hsiao Wu, Paul R. Elliker, Fred F. McKenzie.
    SeriesStation technical bulletin / Oregon State College, Agricultural Experiment Station -- 24., Station technical bulletin (Oregon State College. Agricultural Experiment Station) -- 24.
    ContributionsElliker, P. R. 1911-, McKenzie, Fred F. 1900-
    The Physical Object
    Pagination22 p. :
    Number of Pages22
    ID Numbers
    Open LibraryOL17722368M

      We examined the scientific literature (J. Dairy Sci. –) and found that fertility of cattle inseminated with extended semen packaged in 1/4 cc straws assessed in 13 studies with more than , inseminations had a weighted advantage of percent ( percent unweighted advantage) improvement in conception rates compared with.   Third, when the price and fertility of sexed semen varies, the “best” breeding strategy changes. If the sexed semen price falls from $35 to $15 per unit, all dairies (in the model) should use sexed semen to optimize ICOSC.

      Variation of bacterial load in semen of cattle and buffalo was supported by Hasan et al. and present finding may be compared with observation of Jaisal et al., who also reported increased bacterial count (5 × 10 × 10 3 CFU/ml) in fresh semen of cow bull than buffalo bull ( × 10 × 10 4 CFU/ml). Likewise, Gunsalus et al. Certain strains of bacteria produce sperm agglutination (Rosenthal, ). Experiments were performed which grew spermicidal bacteria in women with long-standing infertility (Matthews and Buxton, ), and treatment of these individuals demonstrated marked improvement in their fertility .

    There is speculation that beef bull semen quality is inferior to that of dairy bulls although few scientific studies are available in the literature. The aim of this study was to evaluate sperm quality in beef bull semen and to determine which parameters could be indicative of fertility after insemination. Sperm quality, assessed by computer assisted sperm motility analysis and flow cytometric. time after an insemination, typically 60 to 90 days,” has been historically used by the dairy industry as an indirect measure of fertility. Regarding semen quality, Pace et al. () reported that fertility increases with increasing numbers of structurally intact and motile sperm.


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Microorganisms in dairy bull semen as related to fertility by Szu-Hsiao Wu Download PDF EPUB FB2

Microorganisms in Dairy Bull Semen As Related to Fertility By SZU-HSIAO WU, PAUL R. ELLIKER AND FRED F. MCKENZIE Departments of Animal Husbandry and Bacteriology REDUCED FERTILITY is a complex phenomenon.

It is not a disease in itself but a symptom, which may develop from variety of conditions. It may be the result of structural defects o.

Coliform organisms were found only occasionally in semen from bulls at various levels of fertility. The presence of the group was associated with high plate counts of semen and may represent fecal contamination of the sample at the time of collection. Members of the genus Streptococcus were not characteristic of the seminal flora.

by: 8. Nutrition is important in dairy bull fertility. Overconditioned bulls can be lazy and not want to mount cows. Thin bulls may have poor semen quality. The problem is that on dairies using bulls, the bulls consume the same diet as the cows.

These diets contains more energy and protein than they need and also contain other ingredients that might. These questions of bull fertility were examined to some extent in a recent study (Journal of Dairy Science ) where the objective was to evaluate the effects of synchronization (timed A.I.

versus estrus A.I.) and semen sorting (sex-sorted versus conventional semen) on the fertility of processed semen of A.I. bulls. Semen cryopreservation determines several sperm damages, including the loss of fertility-associated proteins. The purpose of the study was to compare the metabolite contents in bovine sperm and seminal plasma before and after cryopreservation, and between high- and low-fertility bulls in vitro.

Forty-eight ejaculates, collected from eight bulls (six per bull), were analyzed by liquid Author: Valentina Longobardi, Michal A. Kosior, Nunzia Pagano, Gerardo Fatone, Alessia Staropoli, Anastasia.

65 beef bulls. £ dairy bulls. Total value of calves: £24, Net when deducting semen: £19, (semen costs of £4,) Sexed semen results.

dairy heifers. £ beef. that fertility in dairy cattle Bull cow than failure to due. In General, an individual cow fertility than an individual Bull and more importantly as a bull breed with natural service to 40 women, or possibly hundreds of thousands through artificial insemination can be used although the bulls 20 40% of fertility may be reduced Some are.

Handle semen with care and consider evaluating semen handling procedures regularly. Joseph C. Dalton, Ph.D. is a professor at the University of Idaho. His research is focused on increasing the efficiency of AI in dairy cattle, including heat detection accuracy, synchronization programs and AI technician proficiency.

Certain characteristics of bull semen have been examined at four artificial insemination centres in England. One hundred and twenty-one samples of semen, comprising ejaculates from seventysix bulls of seven breeds, were examined.

The semen from tested samples was subsequently used to inseminate cows. This study examined the effect of Fe3O4 nanoparticles on boar semen.

Beltsville thawing solution without antibiotics was used to extend ejaculates from 5 boars (4 ejaculates/boar). Semen samples of control group (C) and group with Fe3O4 (Fe; mg/mL semen) were incubated under routine boar semen storage temperature (17 °C) for h and nanoparticles were removed by a magnetic field.

Abstract. Published July Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension.

However, simply because a bull can produce semen does not translate directly to fertility. Sperm quality and quantity continue to increase for several months after the initiation of semen production. About 35 percent, 60 percent, and 95 percent of, and month-old bulls, respectively, are reproductively mature and produce good quality.

Microorganisms in dairy bull semen as related to fertility Public Deposited. Analytics × Add. The number of semen samples produced by each man was not related to dairy intake, infertility diagnosis, or semen quality parameters.

Cheese (34%) and low-fat milk (28%) accounted for more than half of all dairy food intake. Men with a high intake of dairy. Your trusted cooperative is meeting your evolving needs in new ways from advanced genetic and reproductive solutions to innovative herd care products and a one-of-a-kind connection with professionals dedicated to ensuring your herd is ready for tomorrow, today.

Bulls A, B, or C. For semen from Bull D, within the population of defective sperm, the ratio of cells with an uncompensable defect to cells with a com-pensable defect is sufficiently great that it is detectable in terms of depressed fertility.

For Bull E, this ratio is even more unfavorable, and sperm with uncompensable defects might total one. Hence, semen quality and the quantity of viable sperm cells may be reduced with bacterial contamination. The likelihood of bacterial growth increases when semen is stored for longer periods prior to use.

Storage of semen can act as an incubation period for bacteria. The direct influence of bacteria on fertilization (conception) remains debatable. To assess the potential fertility of a male and provide diagnostic information in cases of infertility Semen has been collected from a very large number of creatures.

In dairy cattle, chickens and turkeys, semen collection, processing and insemination is a large industry, and has been indispensible in genetic improvement programs.

This conventional semen (Figure 1) of the American Jersey bull (c and e), named “JONES {3}” (b) with herd book number (c), was produced on the th day in (a) at the collection center of GENEX in Shawano, Wisconsin (d, stud code ), and marketed by GENEX (e, marketing code ).This conventional semen (Figure 2) of the American Holstein bull (c and.

Semen may be diluted up to fold, depending on the initial concentration, the processing and storage method, and whether the semen will be used fresh, chilled, or frozen-thawed. Most semen extenders have a buffered egg yolk base and cryoprotectants such as glycerol. These extenders can be used for semen destined to be used fresh or frozen.

The US beef cattle industry has developed a system wherein a large percentage of beef bulls are put into service at 15 to 18 months of age. While this adds the efficiency of keeping bulls for less time before they pay a return, it also presents some challenges.

The fertility of the yearling bull may be somewhat lower than that of older bulls.Dairy Bull Search; Beef Bull Search Solutions based for results-driven farmers. Learn More. Beef on Dairy The idea of crossbreeding low genetic/productive dairy cows with beef semen has become a growing practice on dairies.

The main reason for the growth is. Uddercare ABS provides the most reliable, valuable products to benefit producers. A dairy farmer must select his bull semen from a pool of bulls with proven transferability of protection against mastitis.

Often linked to this trait is fertility. Kenyan dairy cows have long calving intervals. Ideally, a cow should produce a calf once a year but the average calving interval is about days.

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