Journal ArticleDOI
Influence of farm management and breed type on sow's conception-weaning interval and productivity in France
TLDR
It is concluded that control of reproduction, as well as reduction of the weaning age represent two means liable to increase the numerical productivity of French sow herds.About:
This article is published in Livestock Production Science.The article was published on 1976-03-01. It has received 60 citations till now. The article focuses on the topics: Weaning & Litter (animal).read more
Citations
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Journal ArticleDOI
Influence of high ambient temperature on performance of reproductive sows
TL;DR: Lactational loss of sow liveweight did not differ between groups in Trial 1 whereas it was lower at 30 °C than at 20 °C in Trial 2 (1.32 vs. 1.80 kg/day, P).
Journal ArticleDOI
Endocrine changes in sows exposed to elevated ambient temperature during lactation
C R Barb,M J Estienne,R R Kraeling,D. N. Marple,George B. Rampacek,C.H. Rahe,James L. Sartin +6 more
TL;DR: Sows exposed to elevated ambient temperature during lactation exhibited altered endocrine function, and naloxone was administered iv at hour 4 followed 2 hr later by iv injection of TRH and GnRH.
Journal ArticleDOI
Endocrine bases of lactational anoestrus in the sow
Hélène Quesnel,A Prunier +1 more
TL;DR: The inhibition of the hypothalamo-pituitary-ovarian axis during lactation is mainly due to suckling-induced neuroendocrine reflexes, and it is hypothesized that the nutritional deficit becomes relatively more important during the third and fourth weeks pp.
Journal ArticleDOI
Environmental and seasonal influences on the return-to-oestrus after weaning in primiparous sows: a review
TL;DR: The domestic pig is not a true seasonal breeder but manifests variations in reproductive performance throughout the year, and it can be suggested that delayed oestrus in summer is, at least in part, due to nutritional deficiency.
Journal ArticleDOI
Influence of lactation length on sow productivity
TL;DR: This range of lactation length is commonly employed by American swine producers and appears to incorporate the optimal range for breeding herd productivity as measured in terms of pigs weaned/sow/year.
References
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Journal ArticleDOI
Occurrence of Estrus in Sows Following Parturition
Journal ArticleDOI
The improvement of sow productivity, a review of recent experiments in France
TL;DR: The slight reduction of the litter size observed after very early weanings is widely counterbalanced by the acceleration of the reproductive rhythm so that this modern technique leads to a spectacular increase in the numerical productivity of the sows.
Journal ArticleDOI
Age au sevrage chez le porcelet : répercussion sur la productivité des truies et influence sur les jeunes animaux
A. Aumaitre,J. Rettagliati +1 more
TL;DR: HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not, for teaching and research institutions in France or abroad, or from public or private research centers.