Costa Evely Giovanna Leite, da Silva Fabiano Ferreira, Silva Robério Rodrigues, Porto Antonio Ferraz, Santiago Bismarck Moreira, Rocha Leone Campos, Cruz Aline Gonçalves, Guedes Anna Caroline Ferreira, Neto Teotônio Martins, Vieira Edvaldo Alves
Universidade Estadual do Sudoeste da Bahia, UESB, Itapetinga, BA, Brazil.
Trop Anim Health Prod. 2019 Nov;51(8):2505-2511. doi: 10.1007/s11250-019-01964-5. Epub 2019 Jun 14.
The objective of this study was to evaluate the inclusion of increasing levels of licuri meal as a substitute for soybean bran in the diet of pasture-based dairy cows and its effects on the intake, nutrient digestibility, and milk production and composition. Eight crossbred Holstein/Zebu cows were used in two 4 × 4 Latin square plots. The diets contained increasing percentage of licuri meal (0.0, 4.16, 7.09, and 9.45%) in the total diet, replacing soybean bran. The inclusion of licuri meal in the diet affected total dry matter intake and dry matter intake in relation to body weight, which presented a quadratic effect. The same behavior was observed for the consumption of EE, CP, TDN, and NDFap. The NFC consumption showed a linear decrease with the addition of the by-product in the diet. There was no influence of the inclusion of the licuri meal on the digestibility of the DM, CP, NFC, and TDN, while the digestibility of the NDFap and EE presented increasing linear effect. There was a reduction of milk production and food efficiency with the inclusion of increasing levels of the meal. The fat content in milk showed a linear increasing effect. Ditto for cholesterol. It is recommended to include not more than 7.00% of licuri meal for lactating cows with an average production of 20 kg day.
本研究的目的是评估在以牧场为基础的奶牛日粮中增加银榈粕水平替代大豆麸皮的情况，及其对采食量、养分消化率、产奶量和奶成分的影响。八头荷斯坦/泽布杂交奶牛被用于两个4×4拉丁方试验。日粮中银榈粕占总日粮的百分比逐渐增加（0.0%、4.16%、7.09%和9.45%），替代大豆麸皮。日粮中添加银榈粕影响了总干物质采食量以及相对于体重的干物质采食量，呈现出二次效应。在粗脂肪、粗蛋白、总可消化养分和酸性洗涤纤维采食量方面也观察到相同的情况。随着日粮中添加该副产品，非纤维性碳水化合物采食量呈线性下降。添加银榈粕对干物质、粗蛋白、非纤维性碳水化合物和总可消化养分的消化率没有影响，而酸性洗涤纤维和粗脂肪的消化率呈现出线性增加效应。随着日粮中银榈粕添加水平的增加，产奶量和饲料效率降低。牛奶中的脂肪含量呈线性增加效应。胆固醇含量也是如此。对于平均日产奶量为20千克的泌乳奶牛，建议银榈粕的添加量不超过7.00%。
