Weight Gain and Carcass Measurements of Pigs from Gilts Fed Adequate vs. Protein-Free Diets during Gestation

Dunn, J. A.; Wellington, G. H.; Stouffer, J. R.; Vleck, L.D. Van

doi:10.2527/jas1968.2761583x

Cited by 13 publications

(4 citation statements)

References 14 publications

(12 reference statements)

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“…The overall mean concentration of plasma protein was 5.46 and 6.49 g per 100 ml for the blood samples obtained at approximately 40 and 90 kg body weight, respectively. These results do not agree with those reported by Pond et al (1968) in which a significant increase in serum protein (6.4 vs. 7.0 g/100 ml) was observed midway through the postweaning period (90 to 100 days of age) in pigs from gilts fed 9 g of crude protein during gestation as compared with pigs from gilts receiving 292 g daily.…”

Section: Resultscontrasting

confidence: 99%

“…In experiment 1, postweaning gain to 90 kg live weight by pigs suckled by dams fed low protein (2%) during gestation was significantly (P~.05) less than the gain by progeny suckled by dams fed adequate protein (656 vs. 678 g/day). This reduced gain does not agree with the results reported by Pond et al (1968) in which pigs suckled by gilts fed 9 g of crude protein daily during gestation gained more than pigs suckled by gilts fed 218 g of crude protein per day (772 vs. 697 g/day). A significant interaction (P~.05) of rearing dam's gestation by rearing dam's lactation treatment existed for gain from 6.8 to 45 kg body weight in experiment 1.…”

Section: Resultscontrasting

confidence: 99%

“…However, a trend toward decreased growth rate occurred up to both 45 and 90 kg body weight. This trend is in agreement with results from rats, Zeman (1967), Venkatachalam and Ramanathan (1966) and Chow et al (1968) and the data for swine reported by Pond et al (1969) but does not agree with the results of Fuwa (1965) with rats or Pond et al (1968) with swine.…”

Section: Resultssupporting

confidence: 69%

“…Only limited data on the postweaning performance of offspring from sows restricted to low feed or protein intake during gestation are available. Pond et al (1968) reported that postweaning gain of pigs was not significantly affected by feeding 9 g of crude protein daily during gestation, but later found that postweaning gain by pigs from dams fed low protein diets during gestation was decreased (Pond et al, 1969).…”

Section: Discussionmentioning

confidence: 99%

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Postweaning Performance of Pigs from Gilts Fed Diets High and Low in Protein during Gestation and Lactation

et al. 1973

Journal of Animal Science

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T WO experiments involving 296 pigs from gilts fed diets containing low (2%) or adequate (17%) protein during gestation followed by 5% or 17% during lactation were conducted to determine the effect of maternal dietary protein level on performance of the progeny. Blood hematocrit, hemoglobin and plasma protein levels were not affected by the dietary treatments imposed on the dam during gestation. In the first experiment, pigs reared by dams fed adequate protein diets during gestation and lactation retained less (P<.01) of the absorbed nitrogen than pigs from gilts fed low protein. No significant differences in nitrogen utilization were observed in the second experiment. In experiment 1, rate of gain was greater (P<.05) and feed required per unit of gain was reduced in pigs reared by dams fed adequate protein as compared with the performance of pigs from dams fed an inadequate level of dietary protein, indicating that a lasting effect existed in progeny owing to the lactation treatment or gestation carryover effects in the rearing dam. The differences in gain and feed/gain responses in the second experiment were not statistically significant (P<.05).Low protein intake, 45 g per day, during gestation did not significantly (P<.05) affect postweaning performance of the pigs, although a trend toward slower gains by pigs from dams fed low protein during gestation did exist. However, gestation or gestation and lactation treatment apparently influenced quantity or quality of milk produced by the dam and therefore lactation treatment did affect subsequent growth of the progeny. It appears that swine are not as sensitive as rats to protein restriction during gestation and lactation.

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Section: Resultscontrasting

confidence: 99%

Section: Resultscontrasting

confidence: 99%