Page 11 of articles about gestation

Limited and excess dietary protein during gestation affects growth and compositional traits in gilts and impairs offspring fetal growth

Gestation diets containing protein at 50 and 250% of recommendations led to marked changes in protein and fat metabolism in gilts resulting in fetal growth retardation of 15%.

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NutritionAbstract

The threonine requirement of sows increases in late gestation

Feeding a single amount of amino acids (AA) throughout gestation results in overfeeding AA in early gestation and underfeeding AA in late gestation.

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Abstract

Effect of N,N-dimethylglycine supplementation in parturition feed for sows on metabolism, nutrient digestibility and reproductive performance

The current pilot study assessed the influence of N,N-dimethylglycine (DMG) on insulin sensitivity, glucose and fat metabolism, nutrient digestibility and reproductive performance of sows in the peripartal period.

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Abstract

Dry sows in dynamic groups: An investigation of social behaviour when introducing new sows

The aim of this investigarion was to analyse the frequency of agonistic interactions (AI) and the lying behaviour of new and resident sows.

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NutritionAbstract

Dose-response effect of fish oil substitution in parturition feed on erythrocyte membrane characteristics and sow performance

Osmotic resistance of erythrocytes was not altered by increasing amounts of n-3 PUFA, whereas oxidative stability of erythrocytes, as well as oxidative parameters in plasma, were affected.

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Abstract

Does group housing increase the risk of reproduction problems in French sow herds?

The aim of this study was to investigate reproductive performance and possible reproductive problems (late estrus, infertility, reasons for culling) in herds with either group‐housed or individually housed pregnant sows. In a second analysis, we evaluated the effects of different group housing systems.

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ManagementArticle

Mating guidelines (II)

The ideal mating guideline should follow 2 objectives: At least one mating should be adjusted to meet the ideal time and achieve the first objective with the least number of matings.

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Abstract

Reproductive performance of sows is affected by the dietary omega‐6 to omega‐3 fatty acid ratio

An experiment was conducted to determine the effects of the omega‐6 (n‐6) to omega‐3 (n‐3) fatty acid ratio in sow diets on reproductive performance and immunoglobulin profiles in sow colostrum and piglet serum.

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NutritionArticle

Feeding sows during labor: practical advice

It isn’t easy to compile a bibliography referring to this subject matter in specific cases; one has to search for it among the footnotes of other, more general works. The aim of this article is to sum up aspects of feeding that can be important at the time of farrowing.

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ManagementArticle

Ideal mating time

The optimal fertilization of a sow depends on several factors, among them, mating in a specific moment of the oestrus.

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Abstract

Linseed meal during early pregnancy increases litter size in pigs

To determine how feeding linseed meal (LSM) during gestation influences litter size, placental weight, and piglet growth, sows (n = 30) received a phytoestrogen-free Control diet throughout gestation; 12.5% LSM diet throughout gestation (LSM114); or 12.5% LSM diet from day 1 to day 15 of gestation and control diet until parturition (LSM15).

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Article

In search of the ideal batch (1/2)

During the last 10 years we have been trying to optimize the different Batch Management systems (BM), searching for the most effective system. We had come to the conclusion that each one of the different traditional BM options had their pros and cons, and neither is better or worse than the other. Electing the best system depends on the necessities and the calibration of space on each particular farm. However, we have recently “discovered” a new BM option that opens the door to new possibilities.

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Abstract

Effects of extra feeding in mid-pregnancy for three successive parities on lean sows’ productive performance and longevity

The aim of this study was to investigate the long-term effects of increasing feeding allowance during mid-pregnancy in sows.

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NutritionAbstract

Linseed oil in the maternal diet increases long chain-PUFA status of the foetus and the newborn during the suckling period in pigs

The PUFA status in newborn piglet is directly related with the use of PUFA enriched diets during gestation and lactation.

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Abstract

Effect of early parturition on the reproductive performance in sows

The objective of this study was to determine the incidence of premature birth (<114 days of gestation) in the reproductive performance of sows.

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Article

Trouble-shooting herd fertility problems

Let us assume that the expected farrowing rate and live-born litter sizes are 90% and 12.5, respectively, but that current performance is 82% and 11.3, respectively. This means that too many sows are bred but failing to farrow and those that farrow are having fewer pigs.