Dietary supplementation with lysine (protein) stimulates mammary development in late pregnant gilts.
J Anim Sci
; 100(5)2022 May 01.
Article
in En
| MEDLINE
| ID: mdl-35184195
Results indicate that the current National Research Council recommendations for dietary lysine during late pregnancy in pigs, the period when most mammary gland development takes place, are underestimated. From days 90 to 110 of gestation, gilts were fed 2.65 kg of either a conventional diet providing 18.6 g/d of standardized ileal digestible (SID) lysine, or a diet providing 26.0 g/d of SID lysine via the inclusion of additional soybean meal. Diets were isoenergetic. Feeding 26.0 g/d of SID lysine increased the mass of mammary parenchymal tissue (where milk is synthesized) by 44%. Findings suggest that a greater mammary uptake of lysine in supplemented sows supported enhanced accretion of mammary parenchyma. Such information is most pertinent in the actual context where milk yield of hyperprolific sows must be maximized to sustain optimal growth of all their piglets. Furthermore, these data indicate that the use of a two-phase feeding strategy during gestation, whereby dietary lysine is increased from day 90, could benefit potential sow milk yield in the subsequent lactation.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Swine Diseases
Limits:
Animals
/
Pregnancy
Language:
En
Journal:
J Anim Sci
Year:
2022
Document type:
Article
Affiliation country:
Canada
Country of publication:
United States