The present study was conducted to investigate the effect of high-or low-nutrient level diets on the reproductive performance and body composition of pregnant sows, and explore its biochemical mechanisms. A total of 48 primiparous Huanjiang mini-pigs were randomly assigned into 2 groups according to the body weight, and reared in 8 pens (replicates) with 3 mini-pigs per pen. After mating, the animals were fed NRC diet (DE 14.73 MJ/kg, CP 13.11%) or local-pig diet (DE 12.24 MJ/kg, CP 9.77%), respectively. At 45, 75 and 110 d after mating, the sows were weighted, respectively. Blood samples from 1 sow per pen were collected by cranial vena cava for analyzing biochemical parameters. After sacrificed by bloodletting, the sows were dissected. The fetus number was recorded, and the fetus weight and body composition of sows were determined. The results showed that compared with the local-pig diet group, the reproductive performance and body composition of sows in NRC diet group were not significantly different (P>0.05); the plasma glutamic-pyruvic transaminase (GPT) activity at 45 and 75 d of gestation and glutamic oxalacetic transaminase (GOT) activity at 75 d of gestation in NRC diet group were significantly lower (P<0.05); the plasma concentrations of low density lipoprotein cholesterol (LDL-C) at 45 d, high density lipoprotein cholesterol (HDL-C) and total cholesterol (TC) at 75 d, triglyceride (TG) during 45 to 110 d, as well as the plasma alkaline phosphatase (ALP) activity of at 75 d of gestation in NRC diet group were significantly higher (P<0.05). In different pregnant periods, two diets presented different effects on the above-mentioned indices. These findings suggest that these two diets have no significant influences on the reproductive performance and body composition of pregnant Huanjiang mini-pigs; the NRC diet improves nutrient metabolism and promotes the growth and development, but presents adverse increasing fat deposition in body.
ZHU Qian
,
JI Yujiao
,
LI Huawei
,
GUO Qiuping
,
KONG Xiangfeng
. High- or Low-Nutrient Level Diets Affect Reproductive Performance, Body Composition and Plasma Biochemical Parameters of Pregnant Huanjiang Mini-Pigs[J]. Chinese Journal of Animal Nutrition, 2016
, 28(5)
: 1534
-1540
.
DOI: 10.3969/j.issn.1006-267x.2016.05.030
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