Effects of post-weaning altrenogest treatment in primiparous sows

Major losses of body weight and fat reserves during the first lactation are a cause of unsatisfying reproductive performances in primiparous sows. This study, conducted in three commercial sow herds, investigated whether weaning the sows three days earlier together with administering altrenogest was effective for improving reproductive performance (weaning-to-estrus interval, pregnancy rate after first insemination, total litter size and number of live born piglets in the second litter) and body condition. In the herds suffering from the second litter syndrome, a non-significant improvement of the second litter size was found with on average 1.9 extra piglets born. During the treatment period, the treated sows gained on average 1.4 mm back fat, while the control sows lost 0.4 rum back fat. In conclusion, the treatment is useful for putting the sows in better condition at the moment of insemination and it may possibly improve reproductive performance in farms with the second litter syndrome.

• Publication year

  2007

• Venue

  Vlaams dierengeneeskundig tijdschrift

• Publication date

  2007-08-20

• Fields of study

  Agricultural and Food Sciences, Biology

• Identifiers
  DOI 10.21825/vdt.87581
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

• Effects of nutrition on pregnant and lactating sows.

  2020cited by this paper
• Follicle development during luteal phase and altrenogest treatment in pigs.

  2007cited by this paper
• Relationships between backfat depth and plasma leptin during lactation and sow reproductive performance after weaning.

  2005cited by this paper
• Back fat measurements in sows from three commercial pig herds: relationship with reproductive efficiency and correlation with visual body condition scores

  2004cited by this paper
• The importance of a high feed intake during lactation of primiparous sows nursing large litters.

  2003cited by this paper
• Duration of lactation, endocrine and metabolic state, and fertility of primiparous sows.

  2003cited by this paper
• Effect of birth litter size, birth parity number, growth rate, backfat thickness and age at first mating of gilts on their reproductive performance as sows.

  2001influential reference
• Factors influencing estrus and ovulation in weaned sows as determined by transrectal ultrasound.

  2001cited by this paper
• The influence of parity order and body condition and serum hormones on weaning-to-estrus interval of sows.

  2001cited by this paper
• Mesurer lŽépaisseur de lard dorsal des truies pour définir leurs programmes alimentaires

  2001influential reference
• Reproductive problems in primiparous sows

  2001cited by this paper
• Genetic correlations of growth, backfat thickness and exterior with stayability in Large White and Landrace sows.

  2000cited by this paper
• Factors influencing the postweaning reproductive performance of sows on commercial farms.

  1997cited by this paper
• Nutritional modification of body composition and the consequences for reproductive performance and longevity in genetically lean sows

  1997cited by this paper
• Effect of weaning-to-conception interval and lactation length on subsequent litter size in sows

  1997cited by this paper
• Relationship of weaning-to-estrus interval to timing of ovulation and fertilization in sows.

  1996cited by this paper
• Nutrition reproduction interactions in primiparous sows

  1996influential reference
• Some Factors Influencing Pregnancy Rate and Subsequent Litter Size in Primiparous Sows

  1995cited by this paper
• A biological approach to examine genetic variation in weaning-to-oestrus interval in first-litter sows

  1995cited by this paper
• The influence of ovulation rate, early embryonic death, and uterine capacity on litter size in swine

  1994cited by this paper
• An epidemiological investigation of reduced second-litter size in swine

  1992influential reference
• Interrelationships among age, body weight, backfat and lactation feed intake with reproductive performance and longevity of sows

  1991cited by this paper
• Improving Parity-Two Litter Size in Swine

  1989cited by this paper
• Influence of oral administration of allyl trenbolone on subsequent litter size of primiparous sows

  1986cited by this paper
• Body condition of sows across parities and relationship to reproductive performance.

  1986cited by this paper
• Control of pig reproduction in a breeding programme.

  1985influential reference
• Altrenogest and fat for summer breeding of primiparous sows.

  1985cited by this paper
• Interval to first postweaning estrus and causes for leaving the breeding herd in Large White, Landrace, Yorkshire and Chester White females after three parities.

  1985cited by this paper
• Reproductive performance of first parity sows

  1979cited by this paper

• Effects of flush feeding strategy before breeding on reproductive performance of modern replacement gilts: impacts on ovulation rate and litter traits.

  2020cites this paper
• Unraveling the actual background of second litter syndrome in pigs: based on Large White data.

  2020cites this paper
• Effects of altrenogest on reproductive performance of gilts and sows: A meta-analysis.

  2018cites this paper
• EVALUATION OF SOW BODY DEVELOPMENT THROUGHOUT THE REPRODUCTION CYCLE AND ITS INFLUENCE ON REPRODUCTIVE PERFORMANCE IN THE DANUBE WHITE BREED

  2017cites this paper
• Follicle size and reproductive hormone profiles during a post-weaning altrenogest treatment in primiparous sows.

  2015cites this paper
• Use of altrenogest at weaning in primiparous sows

  2014cites this paper
• Effects of breeding at the second oestrus or after post-weaning hormonal treatment with altrenogest on subsequent reproductive performance of primiparous sows.

  2011cites this paper
• Variation in LH pulsatility during 24h after a postweaning altrenogest treatment in relation to follicle development in primiparous sows.

  2011cites this paper
• Incidence and prevention of early parturition and risk factors for stillborn piglets

  2010cites this paper
• THE EFFECT OF BACKFAT THICKNESS IN GILTS ON DAY OF MATING ON THEIR REPRODUCTION PERFORMANCE

  2010cites this paper
• Efeitos da cobertura no segundo estro ou após tratamento hormonal com altrenogest pós desmame no desempenho reprodutivo subsequente de primíparas suínas

  2010cites this paper
• Relationships between growth, fatness and meatiness traits in gilts and their subsequent reproductive performance

  2009cites this paper