کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8490986 | 1552348 | 2018 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Milk yield and composition from ewes fed raw soybeans and their lambs' performance
ترجمه فارسی عنوان
عملکرد و ترکیب شیر از جوندگان غذای سوپ خام و عملکرد بره های شان را تغذیه می کنند
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم دامی و جانورشناسی
چکیده انگلیسی
This trial aimed to evaluate the effects of increasing levels of raw soybeans on milk yield, composition, and fatty acid profile in ewes, and their lambs' performance. Fifty-six Santa Ines ewes (63.9â¯Â±â¯0.76â¯kg BW) were assigned to a randomized complete block design to receive one of the four diets containing 0 (CONT), 70, 140 or 210â¯g/kg DM of raw soybeans. Isonitrogenous diets (150â¯g/kg DM of CP) were composed of 400â¯g/kg DM of in natura sugarcane bagasse as roughage source and 600â¯g/kg DM of concentrate. The experiment lasted from 14 to 56â¯days of lactation. Once a week the ewes were separated from their lambs and milked mechanically. DMI (1.3, 1.3, 1.5 and 1.2â¯kg/day) and milk yield (1.0, 1.1, 1.1 and 1.0â¯kg/day) presented a quadratic effect (Pâ¯<â¯0.05) including 0, 70, 140 or 210â¯g/kg DM of raw soybeans on diets, respectively. However, milk yield corrected for fat or fat and protein, as well as content of milk fat, protein, lactose and total solids did not differ. Short (C4-C12) and medium (C14-C16) chain fatty acids decreased, whereas long-chain (Câ¯â¥â¯17) fatty acids increased linearly (Pâ¯<â¯0.05) with raw soybeans supply. Conjugated linoleic acid (CLA; cis-9 trans-11 and trans-10 cis-12) increased (Pâ¯â¤â¯0.01) and the atherogenicity index decreased linearly (Pâ¯<â¯0.05) with increasing levels of raw soybeans in the diet. Unsaturated:saturated ratio, saturated, unsaturated, monounsaturated and polyunsaturated fatty acids were similar among treatments. There was no difference in lambs' performance in pre or post-weaning periods. Considering that the price of raw soybeans is generally lower than its meal, the inclusion of up to 140â¯g/kg DM of soybeans is recommended for increasing milk yield, with no detrimental effect on milk efficiency production, milk components and lambs' performance. In addition, it is important to highlight that supplementation of up to 210â¯g/kg DM of raw soybeans made milk fat healthier for human consumption.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Animal Feed Science and Technology - Volume 238, April 2018, Pages 1-8
Journal: Animal Feed Science and Technology - Volume 238, April 2018, Pages 1-8
نویسندگان
Evandro M. Ferreira, Marcos V.C. Junior, Daniel M. Polizel, Fumi S. Urano, Ivanete Susin, Renato S. Gentil, Marcos V. Biehl, Janaina S. Biava, Alexandre V. Pires,