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首页> 外文期刊>Tropical Animal Health and Production >Feed intake and production parameters of lactating crossbred cows fed maize-based diets of stover, silage or quality protein silage
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Feed intake and production parameters of lactating crossbred cows fed maize-based diets of stover, silage or quality protein silage

机译：以玉米秸秆，青贮饲料或优质蛋白质青贮饲料为食的泌乳杂交母牛的采食量和生产参数

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摘要

Thirty-six Boran c Friesian dairy cows (392pl12 kg; mean pl SD) in early parity were used in a randomised complete block design. Cows were blocked by parity into three blocks of 12 animals and offered normal maize (NM) stover (T1), NM silage (T2) or quality protein maize (QPM) silage (T3) basal diets supplemented with a similar concentrate mix. Feed intake, body weight and condition changes and milk yield and composition were assessed. The daily intake of DM, OM, NDF and ADF for cows fed the NM stover-based diet was higher (P<0.05) than for the cows fed the NM silage and QPM silage-based diets. However, the daily intake of DOM (9.3 kg) and ME (140.8 MJ) for cows on QPM silage-based diet was higher (P<0.05) than for cows on NM stover-based diet (8.4 kg and 124.2 MJ) and NM silage-based diet (7.9 kg and 119.1 MJ). Body weight of cows was affected (P<0.05) by the diet, but diet had no effect (P>0.05) on body condition score, milk yield and milk composition. The digestible organic matter in the NM stover-based diet (724 g/kg DM) was lower (P<0.05) than that in the NM (770 g/kg DM) and QPM silage-based diet (762 g/kg DM). It was concluded that the performances of the cows on the NM silage and QPM silage diets were similar and were not superior to that of the NM stover-based diet.
机译：在随机完全区组设计中使用了三十六头早产的Boran c Friesian奶牛（392pl12 kg;平均pl SD）。牛被平价地分成三组，每组12只动物，并提供普通玉米（NM）秸秆（T1），NM青贮饲料（T2）或优质蛋白玉米（QPM）青贮饲料（T3）基础日粮，并添加类似的浓缩饲料。评估采食量，体重和状况变化以及牛奶产量和组成。饲喂以NM秸秆为基础日粮的奶牛的DM，OM，NDF和ADF的每日摄入量高于饲喂以NM青贮和QPM为青贮饲料的奶牛的P（0.05）。然而，以青贮饲料为基础饲喂日粮的奶牛每天摄入的DOM（9.3 kg）和ME（140.8 MJ）高于以NM秸秆为基础饲喂的奶牛（8.4 kg和124.2 MJ）和NM（P <0.05）青贮饲料（7.9公斤和119.1兆焦）。日粮对母牛的体重有影响（P <0.05），但日粮对身体状况评分，产奶量和乳成分没有影响（P> 0.05）。 NM秸秆型日粮（724 g / kg DM）中的可消化有机物含量低于NM（770 g / kg DM）和QPM青贮饲料（762 g / kg DM）中的可消化有机物（P <0.05）。 。结论是，奶牛在NM青贮饲料和QPM青贮饲料上的表现相似，并且不优于NM秸秆型饲料。

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