+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

The effects of dietary protein and energy levels of diets offered during lactation on the lactational and subsequent reproductive performance of first-litter sows



The effects of dietary protein and energy levels of diets offered during lactation on the lactational and subsequent reproductive performance of first-litter sows



Animal Science 62(3): 573-579



A total of 315 first parity sows were used in two experiments to establish the lactational and subsequent reproductive performance of first-litter sows in response to varying levels of dietary amino acids and digestible energy (DE) offered during lactation. In the first experiment, sows were offered five diets ranging in lysine content from 6.2 to 15.1 g/kg. In the second experiment sows were offered five diets with a similar lysine: DE ratio (0.88 to 0.85 g/MJ) but ranging in DE content from 12.6 to 15.1 MJ/kg. Voluntary food intake during lactation was unaffected by lysine or DE content of the diets. Piglet pre-weaning growth was similarly unaffected by dietary DE content but responded in a curvilinear manner with increasing dietary lysine. Sow body-weight loss during lactation was unaffected by dietary lysine but declined with increasing DE content up to 13.8 MJ/kg. Backfat loss was lowest for sows offered the lowest lysine diet and tended to reach a plateau at a dietary level of 10.6 g lysine per kg. In response to dietary DE content, backfat loss tended to be highest for sows offered the diet of lowest DE content and declined with increasing DE content up to 15.1 MJ DE per kg. The subsequent weaning to remating interval was unaffected by dietary DE content. Subsequent litter size was similarly unaffected by dietary DE content but was significantly higher for sows offered the two higher, compared with the two lower, lysine diets (10.7 v. 9.6 born alive, s.e.d. 0.5, P lt 0.05). The results suggest that current amino acid recommendations for lactating first-litter sows are inappropriate and may be constraining both milk production and subsequent reproductive performance.

Please choose payment method:






(PDF emailed within 0-6 h: $19.90)

Accession: 002984805

Download citation: RISBibTeXText

DOI: 10.1017/s1357729800015125


Related references

The effects of dietary protein and energy levels of diets offered during lactational and subsequent reproductive performance of first-litter sows. Animal science: an international journal of fundamental and applied research 62(3): 573-579, 1996

The effect of nutrition on the reproductive performance of first-litter sows. 4. The relative effects of energy and protein intakes during lactation on the performance of sows and their piglets. Animal Production 43(2): 319-325, 1986

An assessment of dietary folic acid levels during gestation and lactation on reproductive and lactational performance of sows A cooperative study. Journal of Animal Science 71(Suppl. 1): 172, 1993

An assessment of dietary folic acid levels during gestation and lactation on reproductive and lactational performance of sows: a cooperative study1. Journal of Animal Science 72(9): 2338-2344, 1994

An assessment of dietary folic acid levels during gestation and lactation on reproductive and lactational performance of sows: a cooperative study. S-145 Committee on Nutritional Systems for Swine to Increase Reproductive Efficiency. Journal of Animal Science 72(9): 2338-2344, 1994

The effect of nutrition on the reproductive performance of 1st litter sows 2. protein and energy intakes during lactation. Animal Production 38(2): 249-256, 1984

Impact of dietary lysine during lactation on lactation and subsequent reproductive performance of sows. 1998

Lactational and subsequent reproductive responses of lactating sows to dietary lysine (protein) concentration. Journal of Animal Science 78(2): 348-357, 2000

Effects of dietary energy during gestation and lactation on reproductive performance of sows: a cooperative study. Journal of Animal Science 72(1): 4-9, 1994

Effects of Dietary Protein Levels during Lactation to First-Litter Sows Fed a Fortified Corn Gestation Diet. Journal of Animal Science 41(5): 1362-1367, 1975

Effects of dietary protein levels during lactation to first-litter sows fed a fortified corn gestation diet. Journal of Animal Science 41(5): 1362-1367, 1975

Effects of dietary energy levels and beta-mannanase supplementation in a high mannan-based diet during lactation on reproductive performance, apparent total tract digestibility and milk composition in multiparous sows. Italian Journal of Animal Science 17(1): 128-134, 2018

Effects of lysine and protein intake over two consecutive lactations on lactation and subsequent reproductive performance in multiparous sows. Livestock Science 157(2-3): 482-489, 2013

Effect of dietary lysine levels on 21-day lactation performance of first-litter sows. Journal of Animal Science 34(3): 408-410, 1972

Effect of Dietary Lysine Levels on 21-Day Lactation Performance of First-Litter Sows. Journal of Animal Science 34(3): 408-410, 1972