Cielęta żywione mieszankami z udziałem 20 i 25% (do 70. dnia życia 15%) pełnych nasion rzepaku przyrastały i wykorzystywały paszę podobnie jak otrzymujące mieszankę z poekstrakcyjną śrutą sojową. Gorsze efekty produkcyjne uzyskano skarmiając mieszanki z poekstrakcyjną śrutą rzepakową.%The experiment involved 50 Black-and-White calves of both sexes, 25 bull calves and 25 heifer calves at 23-120 days of age, randomly divided into 5 feeding groups of 5 bull calves and 5 heifer calves each. The control group (Ⅰ) received a concentrate mixture of 16% soybean meal. 11% of soybean in the experimental mixtures (Ⅱ - Ⅴ) was replaced with 15% rapeseed meal (group Ⅱ) or 15, 20 and 25% ground double-low whole rapeseeds 00. In groups Ⅳ and Ⅴ, calves until 70 days of age were given mixture no. Ⅲ containing 15% rapeseeds, and from 71 days 20% (group Ⅳ) or 25% (group Ⅴ) rapeseeds. All the calves were fed individually and their feed intake was monitored. No adverse effect of the rapeseeds was found on the body weight gains of calves and feed conversion. Feeding the mixture with rapeseed meal resulted in worse productivity. The total protein content in the blood serum of group Ⅴ calves was significantly higher than in other groups. No significant effect of the rapeseeds was found on the urea level and on the activity of aminotransferases AspAT and AlAT in blood serum. The N-NH_3 content of rumen fluid was highest in the control calves. Calves fed on mixtures Ⅳ and Ⅴ (20 and 25% rapeseeds) had a worse digestion of dry matter and N-free extractives than those fed on mixtures with soybean or rapeseed meal and larger amounts of barley and corn. The digestibility of the ether extract was significantly higher in groups Ⅲ-Ⅴ than in groups Ⅰ and Ⅱ. A slight darkening of loin meat was observed in calves given mixtures with a higher proportion of rapeseeds; there was also a tendency for higher meat content of leg in calves from groups Ⅲ-Ⅴ.
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机译：Cielętażywionemieszankami zudziałem20 i 25％（do 70. dniażycia15％）pełnychnasion rzepakuprzyrastałyiwykorzystywałypaszępodobnie jakotrzymującemieszankt z poekstrakcyj。实验涉及了50头年龄在23-120天的雌性黑白两头犊牛，25头公牛犊和25头小母牛犊，随机分为5组，每组5只公牛每头犊牛和5头小母牛犊牛。对照组（Ⅰ）接受了16％豆粕的浓缩混合物。用15％的菜籽粉（Ⅱ组）或15％的20％和25％的双低全脂菜籽油00代替11％的实验混合物（Ⅱ-Ⅴ）中的大豆。在Ⅳ和Ⅴ组中，犊牛直到70天。给年龄的混合物编号。 Ⅲ含油菜籽15％，71天起含20％油菜籽（Ⅳ组）或25％油菜籽（Ⅴ组）。所有小牛均单独喂养，并监测其摄食量。没有发现油菜籽对犊牛体重增加和饲料转化率有不利影响。向混合物中添加菜籽粉会导致生产率降低。 Ⅴ组犊牛血清中总蛋白含量明显高于其他组。没有发现菜籽对尿素水平以及血清中氨基转移酶AspAT和AlAT的活性有显着影响。在对照犊牛中，瘤胃液的N-NH_3含量最高。饲喂混合物Ⅳ和Ⅴ的小牛（20％和25％的油菜籽）对干物质和无氮提取物的消化作用比饲喂大豆或菜籽粕和大量大麦和玉米的牛更难消化。醚提取物的消化率在Ⅲ-Ⅴ组明显高于Ⅰ和Ⅱ组。在混合了较高比例油菜籽的情况下，小牛的里脊肉略有变黑。 Ⅲ-Ⅴ组犊牛的腿肉含量也有增加的趋势。
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