Results 151 to 160 of about 7,009 (197)

Preservation of boar semen: An update

Reproduction in Domestic Animals, 2019
ContentsIn the pork industry, artificial insemination and the storage of boar semen in liquid at 17°C are routinely applied to optimize the ejaculate and bring about rapid genetic changes that are reflected in the animal protein. Although the results are satisfactory, they are below what occurs with natural mating.
Felipe Pezo, Fernando Romero, Fabiola Zambrano, Raúl Segundo Sánchez   +3 more
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Efficiency of using boar semen

Животноводство России, 2021
Экспериментально доказано, что по качеству спермы хряки породы дюрок превосходят хряков крупной белой породы. Осеменение свиноматок семенем хряков породы дюрок дает более высокие производственные результаты.
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Factors influencing semen characteristics in boars

Australian Veterinary Journal, 1985
Summary: Factors influencing semen characteristics in young boars reared in a subtropical environment were studied. Age had only a slight effect on semen volume, but had a significant effect on sperm concentration, total sperm in the ejaculate and daily sperm output (DSO), there being marked increase in boars over 12 months of age compared with ...
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New aspects of boar semen freezing strategies

Theriogenology, 2008
Although cryopreserved boar semen has been available since 1975, a major breakthrough in commercial application has not yet occurred. There is ongoing research to improve sperm survival after thawing, to limit the damage occurring to spermatozoa during freezing, and to further minimize the number of spermatozoa needed to establish a pregnancy.
R, Grossfeld, B, Sieg, C, Struckmann, A, Frenzel, W M C, Maxwell, D, Rath   +5 more
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Purchaser Response for Genetically Different Boars and Boar Semen

Journal of Animal Science, 1982
Sales records on boars sold from a breeding company and semen sold from a boar artificial insemination stud were evaluated to assess the emphasis placed on performance data and costs by buyers of semen and boars, and to determine what affects boar semen price.
Rothschild, Max, Christian, L. L., Hayenga, Marvin   +2 more
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Cryopreservation of boar semen using straws

Chinese Journal of Agricultural Biotechnology, 2008
AbstractAn optimal protocol for cryopreservation of boar semen was established. First, the boar semen was pre-diluted with ZORLESCO (ZO) solution and pre-equilibrated at room temperature for 1 h. After adding extender I, spermatozoa were equilibrated at 5°C for 1.5 h; then an equal volume of extender II was added and the spermatozoa equilibrated for 2 ...
Gao Jun-Feng, Zheng Xiao-Feng, Ge Li-Jun, Lu Qing, Rui Rong   +4 more
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Aspects of semen production in boars

Proceedings of the British Society of Animal Production (1972), 1984
Efficient reproductive performance in the pig breeding herd depends on many different factors including the behaviour and semen production characteristics of the boar. The latter are difficult to measure under on-farm conditions but results are accumulating from experimental and A.I. units (e.g.
J.R. Walters, C.G. Green, J. Gray, Sally Goodman, P. N. Hooper   +4 more
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Boar semen microbiome: Insights and potential implications

Animal Reproduction Science
The pioneers of next-generation sequencing technology and bioinformatic analyses initiated a new era in microbiology research by offering profound insights into bacterial microbiome communities. In the pig farming sector, while considerable attention has been devoted to the gut microbiome and the microbiome of the female reproductive tract, research on
CongBang Ngo, Jane M. Morrell, Padet Tummaruk   +2 more
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On the composition of boar semen

The Journal of Agricultural Science, 1954
1. Twenty ejaculates were collected from the same boar at weekly intervals; the composition of semen was studied by microscopic and chemical methods. The total volume of ejaculates varied from 240 to 500 ml., and sperm concentration from 50,000 to 177,000 cells/μl. Chemical analysis revealed 2·4–12·6 mg./100ml.
T. Glover, T. Mann
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Measurement of semen production rates of boars

Australian Veterinary Journal, 1985
Summary: Frequency of semen collection was used to determine methods of stabilising epididymal sperm reserves in young boars in order to measure daily sperm output which then allows estimation of daily sperm production. By collecting from boars 3 times a week (Monday, Wednesday and Friday) most boars reached epididymal stabllisation within 4 weeks and
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