Page 36 of articles about genetics-reproduction

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Use of the production planning chart to schedule the sow replacements

The goal of this trick is to create a register of the coming into heat of the gilts that can be interpreted quickly and easily, and to control the day of the beginning of the treatment with altrenogest when we wish to delay their mating/service.

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News

United Kingdom: breeding companies imports protocol

Britain's major pig genetics companies and their vets have developed a protocol for the importation of live pigs into the United Kingdom.

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Abstract

Effects of group size and floor space allowance on grouped sows: aggression, stress, skin injuries and reproductive performance

Although the results definitely support a space allowance of 1.4 m2/sow being too small, it is not possible to give guidance on an actual space allowance at mixing that is adequate.

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Abstract

Nursing behaviour in lactating sows kept in isolation, in acoustic and visual contact

This study tested experimentally whether acoustic contact without any possibility to see other sows is sufficient for a high level of nursing synchronization.

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Abstract

Suckling effects in sows: importance for mammary development and productivity

Suckling during 12 to 14 h postpartum is insufficient to maintain lactation and the process of involution that occurs in early lactation is reversible within 1 day.

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Abstract

Behavior, production results and meat quality of intact boars and gilts housed in unmixed groups: A comparative study

In the present study, possible differences in behavior, production results and meat quality between entire males and gilts, both housed in single-sex groups but with visual contact to other groups, were investigated.

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An investigation of the impacts of induced parturition, birth weight, birth order, litter size, and sow parity on piglet serum concentrations of immunoglobulin G

Supervision of farrowing may allow for improved colostrum intake with benefits to passive immunity.

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Schematic representation of the major differences between plastic 0.25 ml mini-straws, with single (5 ml) and multiple Flat-bags

Genetics-ReproductionArticle

Simplified freezing of boar semen: possible?

Novel cryopreservation methods and containers are designed to increase semen cryosurvival without disturbing production of conventional liquid semen doses. This provides opportunities for gene banking and preserved fertility when inseminated deep intra uterine, alongside undisturbed commercial AI-dose production.

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Abstract

Pre-freezing and post-thawing quality of boar sperm for distinct portions of the ejaculate and as a function of protein bands present in seminal plasma

This study evaluated pre-freezing and post-thawing boar sperm quality in distinct portions of the ejaculates and identified protein bands potentially related to boar sperm tolerance to freezing.

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ManagementArticle

Coloured pegs for the identification of the number of returns to oestrus of the sows

The goal is to identify the number of returns to oestrus of the sows quickly and at a glance using coloured pegs.

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Abstract

Expression of the hepatic skatole- and androstenone-metabolising enzymes in entire male pigs of two live weights

The aim was to investigate an in vivo relationship between increased levels of testicular steroids and protein expression of the key enzymes involved in hepatic metabolism of skatole and androstenone.

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Abstract

Updated scientific evidence on the welfare of gestating sows kept in different housing systems

Recent papers found similar productivity, physiology, health, and behavior among individually or grouped sows during gestation.

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Humor

Assistance during the birth

About the importance of a good assistance during the birth...

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Abstract

Effect of preoperative meloxicam or tolfenamic acid administration on stress and pain induced by surgical castration in piglets

Tolfenamic acid tended to be more efficient than meloxicam both during and post-castration.

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We identify the sow with its final number (ID) in 2 ear tags

ManagementArticle

Ensuring the identification of the sows

We achieved it combining the use of two ear tags per sow together with their strategic location in order to avoid losses due to biting.

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News

Retail Council of Canada grocery members’ commitment on sow housing

The Retail Council of Canada believes that sows should be housed in an environment where their pregnancy, health and well-being are taken into highest consideration.