Lysine supplementation in late gestation of gilts: effects on piglet birth weight, and gestational and lactational performance

被引:7
作者
Magnabosco, Diogo [1 ]
Bierhals, Thomas [1 ]
Ribeiro, Renato Rosa [1 ]
Cemin, Henrique Scherer [1 ]
Ghiggi Faccin, Jamil Elias [1 ]
Bernardi, Mari Lourdes [2 ]
Wentz, Ivo [1 ]
Bortolozzo, Fernando Pandolfo [1 ]
机构
[1] Univ Fed Rio Grande do Sul, Fac Vet, Setor Suinos, BR-91540000 Porto Alegre, RS, Brazil
[2] Univ Fed Rio Grande do Sul, Fac Agron, Dept Zootecnia, BR-91540000 Porto Alegre, RS, Brazil
来源
CIENCIA RURAL | 2013年 / 43卷 / 08期
关键词
lysine; pregnancy; piglets; birth weight; PREGNANT SOW; GROWTH; ENERGY; REQUIREMENTS; THREONINE; NUTRITION; TISSUES; PIGS;
D O I
10.1590/S0103-84782013000800020
中图分类号
S3 [农学(农艺学)];
学科分类号
0901 ;
摘要
Lysine requirements for gain in maternal body reserves and piglet birth weight, during pregnancy, in contemporary prolific genotypes, are not well established. This study aimed to evaluate the effect of dietary lysine in late pregnancy on piglet birth weight, and on the gestational and lactational performance of gilts. Pregnant gilts were uniformly distributed into two groups and received, from 85 to 110 days of gestation, either of two lysine levels in their diet: Control group - 28g lysine/day (n=136), and Lysine group - 35g lysine/day (n=141). There were no effects (P>0.10) of supplemental lysine on body weight and backfat (BF) gain of females or on piglet birth weight. Gilts supplemented with lysine tended to have a lower percentage of stillbirths (P=0.077), reduced within-litter birth weight variation (P=0.094) and a lower percentage of piglets weighing less than 1100g (P=0.082) than in the Control group. During lactation, the performance of sows and litters was also evaluated in a subgroup of sows (n=26/group). There were no differences between the Control and Lysine groups (P>0.10) in voluntary feed intake, body reserve losses (weight and BF), weaning-to-estrus interval of the sows, and litter weaning weight. In conclusion, an increase in lysine (from 28 to 35g/day) in late gestation of gilts (85 to 110 days) tends to reduce the rate of stillbirths and to improve the uniformity of litter weight at birth, but does not affect the performance of females until farrowing or during subsequent lactation.
引用
收藏
页码:1464 / 1470
页数:7
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