动物营养学报
動物營養學報
동물영양학보
ACTA ZOONUTRIMENTA SINICA
2014年
3期
792-802
,共11页
杨璐玲%吕永艳%宋希海%孙国强
楊璐玲%呂永豔%宋希海%孫國彊
양로령%려영염%송희해%손국강
啤酒糟%瘤胃降解特性%瘤胃有效降解率%表观消化率
啤酒糟%瘤胃降解特性%瘤胃有效降解率%錶觀消化率
비주조%류위강해특성%류위유효강해솔%표관소화솔
brewer’ s grains%ruminal degradation characteristic%ruminal effective degradation rate%apparent digestibility
本试验旨在研究添加不同水平啤酒糟( brewer’ s grains,BSG)对饲粮养分瘤胃降解特性及表观消化率的影响。采用4×4拉丁方设计,选取4头体况良好、体重(40.0±2.5) kg、安装有永久性瘤胃瘘管的崂山奶山羊。在基础饲粮干物质( DM )基础上分别添加0(对照组)、10%、15%、20%的BSG。通过尼龙袋法和内源指示剂法测定饲粮养分的瘤胃降解特性及表观消化率。结果表明:1)BSG添加水平对除粗蛋白质(CP)外的其他养分72 h瘤胃降解率均有显著或极显著的影响(P<0.05或P<0.01);显著或极显著提高了DM、有机物(OM)和中性洗涤纤维( NDF)的瘤胃有效降解率( P<0.05或P<0.01),对酸性洗涤纤维( ADF)的瘤胃有效降解率无显著影响(P>0.05),显著降低了CP瘤胃有效降解率(P<0.05)。2)BSG添加水平对各养分采食量均有显著影响(P<0.05),以BSG添加水平为15%时最高。3)与对照组相比,BSG添加水平为10%时,各养分表观消化率无显著变化( P>0.05);BSG添加水平为15%时,各养分表观消化率均显著升高( P<0.05);BSG添加水平为20%时,除NDF表观消化率显著升高(P<0.05)外,其他养分表观消化率无显著变化(P>0.05)。综合考虑饲粮养分的瘤胃降解特性、采食量和表观消化率得出,本试验条件下,饲粮DM基础上添加15% BSG为最佳。
本試驗旨在研究添加不同水平啤酒糟( brewer’ s grains,BSG)對飼糧養分瘤胃降解特性及錶觀消化率的影響。採用4×4拉丁方設計,選取4頭體況良好、體重(40.0±2.5) kg、安裝有永久性瘤胃瘺管的嶗山奶山羊。在基礎飼糧榦物質( DM )基礎上分彆添加0(對照組)、10%、15%、20%的BSG。通過尼龍袋法和內源指示劑法測定飼糧養分的瘤胃降解特性及錶觀消化率。結果錶明:1)BSG添加水平對除粗蛋白質(CP)外的其他養分72 h瘤胃降解率均有顯著或極顯著的影響(P<0.05或P<0.01);顯著或極顯著提高瞭DM、有機物(OM)和中性洗滌纖維( NDF)的瘤胃有效降解率( P<0.05或P<0.01),對痠性洗滌纖維( ADF)的瘤胃有效降解率無顯著影響(P>0.05),顯著降低瞭CP瘤胃有效降解率(P<0.05)。2)BSG添加水平對各養分採食量均有顯著影響(P<0.05),以BSG添加水平為15%時最高。3)與對照組相比,BSG添加水平為10%時,各養分錶觀消化率無顯著變化( P>0.05);BSG添加水平為15%時,各養分錶觀消化率均顯著升高( P<0.05);BSG添加水平為20%時,除NDF錶觀消化率顯著升高(P<0.05)外,其他養分錶觀消化率無顯著變化(P>0.05)。綜閤攷慮飼糧養分的瘤胃降解特性、採食量和錶觀消化率得齣,本試驗條件下,飼糧DM基礎上添加15% BSG為最佳。
본시험지재연구첨가불동수평비주조( brewer’ s grains,BSG)대사량양분류위강해특성급표관소화솔적영향。채용4×4랍정방설계,선취4두체황량호、체중(40.0±2.5) kg、안장유영구성류위루관적로산내산양。재기출사량간물질( DM )기출상분별첨가0(대조조)、10%、15%、20%적BSG。통과니룡대법화내원지시제법측정사량양분적류위강해특성급표관소화솔。결과표명:1)BSG첨가수평대제조단백질(CP)외적기타양분72 h류위강해솔균유현저혹겁현저적영향(P<0.05혹P<0.01);현저혹겁현저제고료DM、유궤물(OM)화중성세조섬유( NDF)적류위유효강해솔( P<0.05혹P<0.01),대산성세조섬유( ADF)적류위유효강해솔무현저영향(P>0.05),현저강저료CP류위유효강해솔(P<0.05)。2)BSG첨가수평대각양분채식량균유현저영향(P<0.05),이BSG첨가수평위15%시최고。3)여대조조상비,BSG첨가수평위10%시,각양분표관소화솔무현저변화( P>0.05);BSG첨가수평위15%시,각양분표관소화솔균현저승고( P<0.05);BSG첨가수평위20%시,제NDF표관소화솔현저승고(P<0.05)외,기타양분표관소화솔무현저변화(P>0.05)。종합고필사량양분적류위강해특성、채식량화표관소화솔득출,본시험조건하,사량DM기출상첨가15% BSG위최가。
This experiment was conducted to investigate the effects of different supplemental levels of brewer’ s grains ( BSG ) on ruminal degradation characteristics and apparent digestibilities of dietary nutrients. Four healthy Laoshan dairy goats [(40. 0 ±2. 5) kg] with permanent ruminal cannulas were used, and a 4 ×4 Lat-in square design was adopted in this experiment. Based on dry matter ( DM) of a basal diet, goats were sup-plemented with 0, 10%, 15% and 20% BSG, respectively. Ruminal degradation characteristics and apparent digestibilities of dietary nutrients were determined using the methods of nylon bag and endogenous indicator, respectively. The results showed as follows:1) BSG supplemental level had significant effects on ruminal deg-radation rates of nutrients excluding that of crude protein ( CP) at 72 h ( P<0 . 05 or P<0 . 01 ) , and signifi-cantly increased ruminal effective degradation rates of DM, organic matter ( OM) and neutral detergent fiber ( NDF) ( P<0 . 05 or P<0 . 01 ) , but had no significant effect on ruminal effective degradation rate of acid de-tergent fiber ( ADF) ( P>0 . 05 ) . 2 ) BSG supplemental level had significant effects on nutrient intake ( P<0. 05), and supplemented with 15% BSG had the highest nutrient intake. 3) Compared with the control group, the supplementation of 10% BSG had no significant effects on apparent digestibilities of nutrients ( P>0. 05); the supplementation of 15% BSG significantly increased apparent digestibilities of DM, OM, NDF, ADF and CP ( P<0 . 05 );the apparent digestibility of NDF was significantly increased when the supplemental level of BSG was 20% ( P<0 . 05 ) , but not for the rest nutrients ( P>0 . 05 ) . Considering ruminal degrada-tion characteristics, intake and apparent digestibilities of dietary nutrients, the optimal supplemental level of BSG is 15% in the basal diet ( DM basis) under the conditions of the present experiment.