反刍动物营养 Ruminant Nutrition

早期断奶对湖羊羔羊生长性能及胃肠道发育的影响

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  • 1. 兰州大学草地农业科技学院, 兰州 730020;
    2. 甘肃农业大学动物科技学院, 兰州 730070
马志远(1989—),男,内蒙古包头人,硕士研究生,从事反刍动物营养学研究。E-mail:mzy1989@126.com

收稿日期: 2014-12-19

  网络出版日期: 2015-05-13

基金资助

国家自然科学基金(31260564);现代农业产业技术体系建设专项(CARS-39);长江学者和创新团队发展计划资助(IRT13019)

Effect of Early Weaning on Performance and Gastrointestinal Tract Development of Hu lambs

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  • 1. College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730020, China;
    2. College of Animal Science and Technology, Gansu Agricultural University, Lanzhou 730070, China

Received date: 2014-12-19

  Online published: 2015-05-13

摘要

为研究湖羊羔羊28日龄断奶是否可行,本试验选用48只初生重[(3.51±0.57) kg]接近的湖羊公羔,随机均分为2组,分别为早期断奶组(28日龄断奶)和对照组(56日龄断奶)。从7日龄开始补饲开食料,60日龄同时逐渐换生长料。分别在42、56、70、84日龄测定羔羊体重,每组屠宰6只,测定各胃室重量、容积以及各肠段重量、长度。结果表明:1)42、56、70、84日龄2组羔羊体重差异不显著(P>0.05),各时间段平均日增重2组差异不显著(P>0.05);2)瘤网胃、瓣胃的重量、容积,瘤网胃相对重量(占活体重、胃肠道重、胃重百分比),瘤网胃相对容积(占胃容积百分比)在42、56日龄早期断奶组显著高于对照组(P<0.05);3)除70日龄结肠重外,其余各肠段重量、长度在各日龄2组间无显著差异(P>0.05)。综合以上各项指标认为,本试验条件下,28日龄断奶可促进湖羊羔羊胃肠道早期发育,28日龄断奶可行。

本文引用格式

马志远, 李飞, 李发弟, 李冲, 王维民, 唐德富, 刘婷, 潘香羽 . 早期断奶对湖羊羔羊生长性能及胃肠道发育的影响[J]. 动物营养学报, 2015 , 27(5) : 1385 -1393 . DOI: 10.3969/j.issn.1006-267x.2015.05.008

Abstract

Forty-eight new born male Hu lambs with birth weight of (3.51±0.57) kg were randomly divided into two groups in order to study the feasibility of 28-day weaning strategy. Lambs in early-weaned group (weaned at 28 days of age) and control group (weaned at 56 days of age) were fed starter from 7 days of age. Growing diet gradually introduced since 60 days of age in both groups. Lambs were weighted, and six lambs in each group were slaughtered to measure the weight and volume of stomach compartments, and the weight and length of intestinal tract at 42, 56, 70 and 84 days of age, respectively. The results showed as follows: 1) body weight of lambs at 42, 56, 70 and 84 days of age in the two groups was not significantly different (P>0.05), the same as average daily gain; 2) the weight and volume of reticulorumen and omasum, the relative weight (percentage of live weight, percentage of gastrointestinal tract weight, and percentage of stomach weight) and the relative volume (percentage of stomach volume) of reticulorumen in early-weaned group were significantly higher than those in control group at 42 and 56 days of age (P<0.05); 3) there were no significant differences in weight and length of all segments of intestinal tract between the two groups at all time points (P>0.05) except the weight of colon at 70 days of age. It is concluded that weaning at 28 days of age is a feasible strategy for promoting gastrointestinal tract development of Hu lambs under this experimental condition.

参考文献

[1] BALDWIN V R L,MCLEOD K R,KLOTZ J L,et al.Rumen development,intestinal growth and hepatic metabolism in the pre- and post-weaning ruminant[J].Journal of Dairy Science,2004,87(Suppl.):E55-E65.  

[2] 岳喜新.蛋白水平及饲喂量对早期断奶羔羊生长性能及消化代谢的影响[D].硕士学位论文.塔里木:塔里木大学,2011.

[3] 王世琴,李冲,李发弟,等.开食料中性洗涤纤维水平对哺乳羔羊生长性能和消化道发育的影响[J].动物营养学报,2014,26(8):2169-2175.

[4] KHAN M A,LEE H J,LEE W S,et al.Starch source evaluation in calf starter:Ⅱ.Ruminal parameters,rumen development,nutrient digestibilities,and nitrogen utilization in Holstein calves[J].Journal of Dairy Science,2008,91(3):1140-1149.

[5] COVERDALE J A,TYLER H D,QUIGLEY J D,et al.Effect of various levels of forage and form of diet on rumen development and growth in calves[J].Journal of Dairy Science,2004,87(8):2554-2562.  

[6] 王彩莲,郝正里,李发弟,等.0-56日龄放牧羔羊消化道的解剖特点和瘤胃功能变化[J].畜牧兽医学报,2010,41(4):417-424.

[7] 郭江鹏,郝正里,李发弟,等.早期断奶对舍饲肉用羔羊消化器官发育的影响[J].畜牧兽医学报,2013,44(7):1078-1089.

[8] 柴建民,刁其玉,屠焰,等.早期断奶时间对湖羊羔羊组织器官发育、屠宰性能和肉品质的影响[J].动物营养学报,2014,26(7):1838-1847.

[9] SANZ SAMPELAYO M R,HERNANDEZ-CLUA O D,NARANJO J A,et al.Utilization of goat milk vs.milk replacer for granadina goat kids[J].Small Ruminant Research,1990,3(1):37-46.  

[10] 张丽英.饲料分析及饲料质量检测技术[M].3版.北京:中国农业大学出版社,2007.

[11] 中国饲料数据库.中国饲料成分及营养价值表(2013年第24版)[J].中国饲料,2013(21):38-43.

[12] 中国饲料数据库.中国饲料成分及营养价值表(2013年第24版)(续)[J].中国饲料,2013(22):38-42.

[13] DONEY J M,PEART J N,SMITH W F,et al.A consideration of the techniques for estimation of milk yield by suckled sheep and a comparison of estimates obtained by two methods in relation to the effect of breed,level of production and stage of lactation[J].The Journal of Agricultural Science,1979,92(1):123-132.  

[14] LELIVELD L M C,RIEMENSPERGER A V,GARDINER G E,et al.Effect of weaning age and postweaning feeding programme on the growth performance of pigs to 10 weeks of age[J].Livestock Science,2013,157(1):225-233.  

[15] QUIGLEY J D,CALDWELL L A,SINKS G D,et al.Changes in blood glucose,nonesterified fatty acids,and ketones in response to weaning and feed intake in young calves[J].Journal of Dairy Science,1991,74(1):250-257.  

[16] MYERS S E,FAULKNER D B,IRELAND F A,et al.Production systems comparing early weaning to normal weaning with or without creep feeding for beef steers[J].Journal of Animal Science,1999,77(2):353-377.

[17] BELANCHE A,BALCELLS J,DE LA FUENTE G,et al.Description of development of rumen ecosystem by PCR assay in milk-fed,weaned and finished lambs in an intensive fattening system[J].Journal of Animal Physiology and Animal Nutrition,2010,94(5):648-658.  

[18] ANDERSON K L,NAGARAJA T G,MORRILL J L.Ruminal metabolic development in calves weaned conventionally or early[J].Journal of Dairy Science,1987,70(5):1000-1005.  

[19] PENNER G B,STEELE M A,ASCHENBACH J R,et al.Ruminant Nutrition Symposium:molecular adaptation of ruminal epithelia to highly fermentable diets[J].Journal of Animal Science,2011,89(4):1108-1119.  

[20] PLÖGER S,STUMPFF F,PENNER G B,et al.Microbial butyrate and its role for barrier function in the gastrointestinal tract[J].Annals of the New York Academy of Sciences,2012,1258:52-59.  

[21] AMARAL C M C,SUGOHARA A,RESENDE K T,et al.Performance and ruminal morphologic characteristics of Saanen kids fed ground,pelleted or extruded total ration[J].Small Ruminant Research,2005,58(1):47-54.  
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