Effects of Nutrient Levels of Sows During Pregnancy on Muscle Growth and Development of Offspring Piglets

SU Guoqi; WANG Jun; CAO Meng; CHE Lianqiang; FANG Zhengfeng; LIN Yan; XU Shengyu; WU De

doi:10.3969/j.issn.1006-267x.2016.04.012

Chinese Journal of Animal Nutrition >

2016 , Vol. 28 >Issue 4: 1050 - 1059

DOI: https://doi.org/10.3969/j.issn.1006-267x.2016.04.012

SWINE NUTRITION

Effects of Nutrient Levels of Sows During Pregnancy on Muscle Growth and Development of Offspring Piglets

SU Guoqi ,
WANG Jun ,
CAO Meng ,
CHE Lianqiang ,
FANG Zhengfeng ,
LIN Yan ,
XU Shengyu ,
WU De

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Institute of Animal Nutrition of Sichuan Agricultural University, Chengdu 611103, China

Received date: 2015-10-15

Online published: 2016-04-11

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Abstract

This experiment was conducted to investigate the effects of nutrient levels of sows during pregnancy on muscle growth and development of offspring piglets. Thirty-three crossbred Landrace×Yorkshine(LY) gilts with similar age [(255±10) days of age] and body weight [(150±9) kg] were randomly assigned to three groups:low nutrient level(LN) group, appropriate nutrient level(AN) group and high nutrient level(HN) group. Each group contained 6 replicates and 1 sow per replicate. During early pregnancy(1 to 30 d), 0.75, 1.00 and 1.50 maintenance requirements of nutrient was provided to LN, AN and HN groups, respectively. During middle pregnancy(31 to 90 d) and late pregnancy(91 to 112 d), dietary nutrient levels were increased by 20% and 25% compared with early pregnancy, respectively. The results showed as follows:1) compared with LN group, the birth weight, weanling weight and muscle weight(except soleus) of piglets of AN and HN groups were significantly increased(P<0.05 or P<0.01), the semitendinosus/body weight and longissimus dorsi/body weight of piglets of AN group were significantly higher than those of LN group(P<0.01), the muscle protein concentration of newborn piglets of AN group was significantly higher than that of LN and HN groups(P<0.05 or P<0.01). 2) The longissimus dorsi myosin heavy chain Ⅱx mRNA expression of newborn piglets of AN group was significantly lower than that of LN group(P<0.01). 3) The longissimus dorsi myogenic regulatory factor 4 mRNA expression of newborn piglets of AN group was significantly higher than that of LN and HN groups(P<0.05). In conclusion, birth weight weanling weight and muscle weight of piglets is remarkably influenced by nutrient levels of sows during pregnancy. However, the relative muscles weight and protein concentration of offspring is damaged impaired by maternal over and under nutrition, which may be associated with the expression of myogenic regulatory factor 4.

Key words： sows; nutrient levels; piglets; muscle

Cite this article

SU Guoqi , WANG Jun , CAO Meng , CHE Lianqiang , FANG Zhengfeng , LIN Yan , XU Shengyu , WU De . Effects of Nutrient Levels of Sows During Pregnancy on Muscle Growth and Development of Offspring Piglets[J]. Chinese Journal of Animal Nutrition, 2016 , 28(4) : 1050 -1059 . DOI: 10.3969/j.issn.1006-267x.2016.04.012

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