棉茬地放牧对山羊养分消化率及组织中游离棉酚残留的影响
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摘要
本研究旨在通过为期60 d的棉茬地连续放牧,探讨棉茬地放牧对本土山羊消化率及各组织中游离棉酚残留的影响。实验选取体况相近的10只本土山羊,使其跟群在棉茬地中固定放牧60 d,测定放牧过程中山羊采食量及消化率。分别确定放牧结束及放牧结束后改换日粮一周时山羊的肝,肾,肌肉及血液中游离棉酚残留量。结果显示:棉茬地放牧山羊平均干物质采食量为816.10 g/d,平均干物质消化率为36.93%,可消化蛋白和可消化能进食量分别为26.87 g/d和3.99 MJ/d。放牧结束时,各组织中游离棉酚含量排序为肝脏>血液>肾脏>肌肉,肝脏中游离棉酚残留量达到161.37 mg/kg。放牧结束一周后山羊肝脏、肾脏及肌肉中游离棉酚浓度分别降低26.24%、16.21%、14.31%,肝脏中游离棉酚浓度显著降低(P<0.05)。
This paper aimed to study the effects of nutrient digestibility and free gossypol residue in tissue of goat by continuous grazing on cotton stubble land for 60 days. 10 local goats with similar conditions were selected and allowed to graze on cotton stubble land for 60 days to measure their feed intake and digestibility, and separately determine the free gossypol residues within liver, kidney, muscle and blood when the goats finished their grazing or one week after daily ration replaced the grazing. The average dry matter intake and digestibility of goats were 816.10 g/d and 36.93% respectively, and digestible protein and energy intake were separately 26.87 g and 3.99 MJ. After grazing, the content of free gossypol were liver >blood > kidney > muscle, free gossypol residues in the liver reached 161.37 mg/kg. The residual amount of gossypol in the liver reached 161.37 mg/kg. After one week, the concentration of gossypol in liver, kidney and muscle of goats were decreased by 26.24%, 16.21% and 14.31% respectively, and the gossypol in liver decreased significantly(P<0.05).
This paper aimed to study the effects of nutrient digestibility and free gossypol residue in tissue of goat by continuous grazing on cotton stubble land for 60 days. 10 local goats with similar conditions were selected and allowed to graze on cotton stubble land for 60 days to measure their feed intake and digestibility, and separately determine the free gossypol residues within liver, kidney, muscle and blood when the goats finished their grazing or one week after daily ration replaced the grazing. The average dry matter intake and digestibility of goats were 816.10 g/d and 36.93% respectively, and digestible protein and energy intake were separately 26.87 g and 3.99 MJ. After grazing, the content of free gossypol were liver >blood > kidney > muscle, free gossypol residues in the liver reached 161.37 mg/kg. The residual amount of gossypol in the liver reached 161.37 mg/kg. After one week, the concentration of gossypol in liver, kidney and muscle of goats were decreased by 26.24%, 16.21% and 14.31% respectively, and the gossypol in liver decreased significantly(P<0.05).
引文
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[14]马友记,王宝义,李发弟,等.不同营养水平全混合日粮对舍饲育肥羔羊生产性能、养分表观消化率和屠宰性能的影响[J].草业学报,2012,21(4):252-258.
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[2]许国英,热合木都拉,马英杰.棉花秸秆的饲用价值研究[J].新疆畜牧业,1998,(3):10-11.
[3]王安平.棉粕和棉籽营养成分与棉酚含量测定及其对奶牛产奶量和乳品质的影响[D].长沙:湖南农业大学,2009.
[4]吐尔逊帕夏,闻正顺,潘晓亮,等.棉籽壳对雄性细毛羊生长性能及组织中棉酚残留的影响[J].浙江大学学报(农业与生命科学版),2010,36(3):306-310.
[5]哈丽代·热合木江,叶尔兰·对山别克,邹琳,等.棉茬地放牧对母羊繁殖性能及血液性状的影响[J].草业科学,2018,35(1):192-198.
[6]森本宏.家畜营养实验法[M].东京:养膳堂,1971.
[7]朱进忠.草业科学实践教学指导[M].北京:中国农业出版社,2009.
[8]常碧影,张平.饲料质量与安全检测技术[M].北京:化学工业出版社,2008.
[9]李艳琴,徐敏云,王振海,等.牧草品质评价研究进展[J].安徽农业科学,2008,36(11):4485-4486.
[10]方雷.秸秆专用添加剂和制粒对绵羊利用棉花秸秆日粮的影响[D].乌鲁木齐:新疆农业大学,2004.
[11]魏敏.棉花秸秆对绵羊饲用价值的初步研究[D].乌鲁木齐:新疆农业大学,2002.
[12]吕中旺,王建,孙鹏,等.秸秆主产区三大作物秸秆饲用品质分析与评价[J].草业科学,2018,35(8):2016-2021.
[13]张晓庆,李兴酉,李鹏.影响放牧羔羊采食量诸因子的关联度分析[C].中国草学会青年工作委员会学术研讨会论文集,2007:160-163.
[14]马友记,王宝义,李发弟,等.不同营养水平全混合日粮对舍饲育肥羔羊生产性能、养分表观消化率和屠宰性能的影响[J].草业学报,2012,21(4):252-258.
[15]马建忠,蒲明.棉壳和棉杆作为肉羊育肥饲料安全性的研究[J].草食家畜,2016,(4):14-19.
[16]闫中元,米里克木,阿迪力.育肥羊体内游离棉酚含量测定试验[J].中国兽医杂志,2000,26(9):18-19.
[17]REISER R.FU H C.The mechanism of gossypol detoxification by ruminant animals[J].J Nutr.1962,76(2):215.
[18]ROBINSON P,GETACHEW G.DE PETERS E,et al.Influence of variety and storage for up to 22 days on nutrient composition and gossypol level of Pima cottonseed(Gossypium spp.)[J].Anim Feed Sci Technol,2010.91(3-4):149-156.
[19]赛买提·艾买提.棉籽壳中游离棉酚在绵羊消化道中的变化及其代谢研究[D].乌鲁木齐:新疆农业大学,2008.
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