Documentations

Evolution in litter size with farrowing age in pure bred and crossbred sows

This study is based on data provided by the French national program of Technical Management of Sow Herds (GTTT).Information on a total of one million litters weaned between 1996 and…

Estimation of realised genetic trends in French Large White pigs from 1977 to 1998 using stored frozen semen : experimental design and first results

An experimental design has been implemented in order to estimate realised genetic trends from 1977 to 1998 in the French Large White pig breed. Large White sows were inseminated with…

Study of the genetic variability of selected and local breeds using pedigree information

The pedigree analysis of four selected pig breeds (Large White dam line, Large White sire line, French Landrace and Piétrain) and five local breeds (Basque, Gascon, Blanc de l’Ouest, Limousin…

Interactive effects of the RN and HAL genes on pigmeat quality : results on processing and slicing of cured-cooked ham

An experiment was set up in order to estimate the interactive effects of the two genes HAL (N and n alleles) and RN (RN- and rn+ alleles) on the score…

Destructured meat: the situation in five slaughterhouses in western France ; risk factors and a proposed prediction model ; colorimetric, biochemical and histological characterisation

In order to assess the frequency of destructured meat, data from 3740 hams produced after 44 slaughter runs were collected in 5 slaughterhouses located in western France. A total of…

Inventory and characteristics of « Pig meat quality schemes » ; « labels », product quality guarantee and organic production

In 1999, 3.8 millions pigs, reared in 2 600 farms, were produced under official quality schemes in France. This represented 16.5% of the national production.In France there are 13 different…

Concentrations of trace elements in the diets and slurry of fattening pigs, sows and piglets

The objective of this study was to characterise the trace element composition of diets and slurry of pigs at different ages.Slurry was collected in stainless steel tanks placed under the…

Teneurs en éléments-trace métalliques des aliments et des lisiers de porcs à l'engrais, de truies et de porcelets

L’objectif de cette étude est de caractériser la composition des aliments et des lisiers de porc par stade physiologique pour 15 éléments-trace. Des bacs en inox disposés sous caillebotis nous…

Experiment to study the effects of a partially or totally slatted floor during the growing/finishing period on growth performance and ammonia emissions

The aim of this study was to determine the effect of a partially slatted floor compared to a totally slatted floor on growth performance and ammonia emissions from a fattening…

Modelling heat production in group-housed growing pigs exposed to ambient temperatures ranging between 12 and 29°C

The effects of ambient temperature (T, 12 to 29°C), body weight (BW, 30 to 90 kg) and metabolisable energy (ME, kJ/j) intake on components of energy balance were studied in…

Influence of range of cycling temperature on the performance of growing pigs kept at an average ambient temperature of 20 or 28°C

Three trials, each involving 192 crossbred pigs, were carried out to evaluate the effects of ambient temperature of 20 and 28°C maintained constant or cycling over the day by 1.5,…

Effect of air movement and ambient temperature on the zootechnical performance and behaviour of growing-finishing pigs

Two experiments, each involving on 192 feeders, were conducted to determine the effect of air movement and ambient temperature on the pigs performance and behaviour. Treatments included three ambient temperatures…