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Page 41 of articles about sow

Threonine requirement of sows in early, mid- and late gestation

Current NRC (1998) recommendations for amino acids (AA) do not account for different requirements in early vs late gestation due to changes in metabolism; recovery of body tissue from previous lactation, and fetal, gut and mammary growth in late gestation. These increases in gut and mammary tissue and gut mucin suggest that there is a higher requirement for threonine (THR) in late gestation.

portada

ManagementArticle

Positioning crates: Which is better: facing inwards or outwards? (I)

When designing farrowing rooms, sows can be placed in different ways: facing inwards, facing outwards, with aisles both in front and behind the crate, or on both sides of the aisle.

maternidad

ManagementArticle

Farrowing programming III

Next we will consider some aspects that can be taken into account in order to adjust the day to induce farrowing.

NutritionAbstract

Dietary supplementation with 0.8% L-Arginine between days 0 and 25 of gestation reduces litter size in gilt

Dietary L-Arginine supplementation may negatively affect gilt reproductive performance.

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ManagementArticle

Organization of replacements V

On many farms the introduction of gilts is not homogenous. However, the introduction of a similar number of gilts to each productive batch would be ideal. How can we do this?

Playing and fighting by piglets around weaning on farms, employing individual or group housing of lactating sows

We assessed how piglets play, fighting and biting behaviour before and after weaning were affected by the housing system and weaning age as well as how the three behaviours are related to each other and piglet post-weaning weight gain.

19-fondo

ManagementArticle

Farrowing programming II

The gestation period in the majority of sows is usually around 113 to 115 days. However, a percentage of sows can farrow normally up to 3 days before or after.

NutritionAbstract

Comparison between computerised liquid feeding and ad libitum dry feeding for sows during lactation

Liquid feeding during lactation may increase feed intake without affecting piglet performance

Intra-uterine insemination with low numbers of frozen–thawed boar spermatozoa in spontaneous and induced ovulating sows under field conditions

The present study was conducted to evaluate non-return rate (NR), farrowing rate (FR), and number of total pigs born/litter (TB) of weaned sows after intra-uterine insemination (IUI) using low numbers of frozen–thawed (FT) spermatozoa.

Post-weaning Altrenogest treatment in primiparous sows; the effect of duration and dosage on follicular development and consequences for early pregnancy

Post-weaning treatment with Altrenogest of first litter sows influenced follicle size and shortened the follicular phase, but did not affect ovulation rate or early embryonic development.

Australia - Sow stalls under review

Australia's pork industry will consider scrapping the use of sow stalls as long as it gets support from governments and retailers.

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Proportion of the litter farrowed, litter size, and progesterone and estradiol effects on piglet birth intervals and stillbirths

Stillbirth in swine ranges from 2 to 9%, resulting in a significant loss of piglets. Previous studies clearly indicate a relationship between prolonged birth intervals and stillbirth, but factors influencing birth intervals are not fully known. To characterize birth intervals and stillbirth, farrowing was recorded during three farrowing seasons.

Australia - Tasmania leads the nation in welfare of pigs

The Minister for Primary Industries Bryan Green announced that Tasmania will lead the nation by moving to ban the use of dry sow stalls in piggeries.

Thawing boar semen in the presence of seminal plasma: Effects on sperm quality and fertility

The present studies confirm an adverse effect of inseminating FT sperm on sperm quality and sow fertility but suggest that thawing FT sperm in 50% SP may partially alleviate these adverse effects.

Environmental and sow-related factors affecting the duration of farrowing

Allowing the sow to move freely before farrowing, reducing the constipation state and avoid excessive fattening during late pregnancy all appear to be key factors in shortening farrowing time and reducing perinatal mortality.

cerdas en cubrición

ManagementArticle

Organization of the replacements III

In the previous chapter we began to describe several systems for recording clearly and quickly the dates that gilts come into heat and for planning gilt service.