精准营养下低排饲粮对生长猪生长性能、骨骼特性及氮平衡的影响
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摘要
试验旨在研究基于理想氨基酸模型,精准营养下低排饲粮对生长猪生长性能、骨骼特性及氮平衡的影响,为指导低排饲粮的推广应用提供依据。试验选取体重相近、健康的约20 kg杜×长×大三元杂交生长猪72头,随机分为2组,即对照组和试验组,每组6个重复,每个重复6头,分别饲喂基础饲粮和低排饲粮,试验期36 d。结果表明:相比对照组,低排饲粮对生长猪的生长性能无显著影响(P>0.05);低排饲粮对生长猪的骨骼发育无显著影响(P>0.05);低排饲料显著降低总氮摄入量、粪氮、尿氮和总氮排放量(P<0.05),显著提高氮沉积率和氮消化率(P<0.05)。在氨基酸平衡条件下,低排饲料对生长猪的生长性能和骨骼发育无显著影响,但能够降低氮排放,提高蛋白质的利用率。
This study was conducted to investigate the effects of low emission diets under precise nutri-tion, based on ideal amino acid model, on growth performance, bone characteristics and nitrogen bal-ance of growing pigs. A total of 72 healthy ternary hybrid growing pigs(Duroc×Landrace×Large White)with approximate weight of 20 kg were selected and randomly divided into 2 groups,the control groupand the test group, each group with 6 replicates(columns) and each replicate with 6 growing pigs. Thecontrol group and the test group were fed basal diet and low emissionl diet, respectively. The feedingtrial lasted for 36 d. The results showed that(1) compared with control group, there was no significanteffect on growth performance and skeleton growth of growing pigs(P>0.05);(2) compared with controlgroup, nitrogen, low emissionnal diet decreased total nitrogen intake, urinary nitrogen and total nitro-gen emissions significantly(P<0.05), increased the rate of nitrogen deposition and nitrogen digestibilitysignificantly(P<0.05). Overall, besed on amino acid balance, low emissional diets under precise nutri-tion had no significant effect on growth performance and skeleton growth of growing pigs, but reducedthe nitrogen emissions and improved the rate of protein utilization.
This study was conducted to investigate the effects of low emission diets under precise nutri-tion, based on ideal amino acid model, on growth performance, bone characteristics and nitrogen bal-ance of growing pigs. A total of 72 healthy ternary hybrid growing pigs(Duroc×Landrace×Large White)with approximate weight of 20 kg were selected and randomly divided into 2 groups,the control groupand the test group, each group with 6 replicates(columns) and each replicate with 6 growing pigs. Thecontrol group and the test group were fed basal diet and low emissionl diet, respectively. The feedingtrial lasted for 36 d. The results showed that(1) compared with control group, there was no significanteffect on growth performance and skeleton growth of growing pigs(P>0.05);(2) compared with controlgroup, nitrogen, low emissionnal diet decreased total nitrogen intake, urinary nitrogen and total nitro-gen emissions significantly(P<0.05), increased the rate of nitrogen deposition and nitrogen digestibilitysignificantly(P<0.05). Overall, besed on amino acid balance, low emissional diets under precise nutri-tion had no significant effect on growth performance and skeleton growth of growing pigs, but reducedthe nitrogen emissions and improved the rate of protein utilization.
引文
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[2]林维雄,黄剑锋,董志岩,等.低蛋白饲粮添加植酸酶和非淀粉多糖酶对生长猪生长性能和养分排泄量的影响[J].福建畜牧兽医,2016(1):3-6.
[3]吴信,印遇龙.低氮低磷饲粮对生长育肥猪生长性能和生态环境的影响[J].安徽农业科学,2006,34(22):5870-5871.
[4]李莹,吴信,舒绪刚,等.低排饲粮对生长肥育猪氮磷排放的影响[J].饲料博览,2010(10):17-19.
[5]何欣,马秋刚,梁福广,等.低蛋白饲粮不同磷水平及添加植酸酶对生长猪生长性能及部分血清生化指标的影响[J].北京农学院学报,2009,24(4):17-19.
[6]梁福广,何欣,马秋刚,等.低蛋白饲粮不同磷水平及添加植酸酶对生长猪氮磷代谢的影响[J].北京农学院学报,2007,22(1):24-27.
[7]于明,边连全,程波.低磷饲粮中添加植酸酶对生长猪生长性能及饲料中磷、钙和蛋白质表观消化率的影响[J].畜牧与兽医,2013,45(2):32-36.
[8]吴东,齐云霞,钱坤.低蛋白质低磷饲粮添加氨基酸和植酸酶对生长肥育猪生长性能、血清生化指标及氮磷代谢的影响[J].养猪,2016(6):49-51.
[9]王德海,杨维仁,郭宝林,等.不同无机磷水平饲粮添加植酸酶对断奶仔猪骨骼钙磷代谢的影响[J].动物营养学报,2016(6):1850-1858.
[10]李佳,吴东波.添加植酸酶饲粮不同磷水平和钙磷比对生长肥育猪血液生化指标和骨骼性能的影响[J].畜禽业,2007(4):8-11.