Effect of first versus second oestrus insemination on gilt lifetime productivity
New research shows a significance difference in lifetime total born performance of gilts bred at first oestrus and second oestrus.
10 December 2019
6 minute read
By: 
© Malanda Joab
© Malanda Joab
| References | ||||
|---|---|---|---|---|
| Bidanel J. P., J Gruand and C. Legault. | ||||
| (1996) | Genetic variability of age and weight at puberty, ovulation rate and embryo survival in gilts and relations with production traits.. Genet Selection Evolution | 28:103-115 | ||
| Chen ZY, Dziuk PJ | ||||
| (1993) | Influence of initial length of uterus per embryo and gestation stage on prenatal survival, development, and sex ratio in the pig.. Journal of Animal Science | 71:1895-1901 | ||
| Hoge MD and Bates RO | ||||
| (2011) | Developmental factors that influence sow longevity.. Journal of Animal Science | 89:1238–1245 | ||
| Sporke J | ||||
| (2005) | Gilt Development Programs in North and South America. American Association of Swine Veterinarians (AASV) | pp. 11–16 | Toronto, Canada | |
| Tummaruk P, Tantasuparuk W, Techakumphu M, Kunavongkrit A | ||||
| (2009) | The association between growth rate, body weight, backfat thickness and age at first observed oestrus in crossbred Landrace × Yorkshire gilts.. Animal Reproduction Science | 110:108-122 | ||
| Vianna WL, Pinese ME, de Campos Rosseto A, Bombonato PP, Rodrigues PHM, de Sant’Anna Moretti A | ||||
| (2004) | Relationship between prenatal survival rate at 70 days of gestation and morphometric parameters of vagina, uterus and placenta in gilts.. Reprod Domest Anim. | 39:381-384 | ||
| Wettere WH, Revell DK, Mitchell M, Hughes PE | ||||
| (2006) | Increasing the age of gilts at first boar contact improves the timing and synchrony of the pubertal response but does not affect potential litter size.. Animal Reproduction Science | 95:97-106 |
