کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5542662 1402521 2016 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Short communication: Partial replacement of ground corn with algae meal in a dairy cow diet: Milk yield and composition, nutrient digestibility, and metabolic profile
ترجمه فارسی عنوان
ارتباطات کوتاه: جایگزینی ذرت زمین با جگر جلبک در یک رژیم غذایی گاو شیری: عملکرد و ترکیب شیر، هضم غذا و مشخصات متابولیک
کلمات کلیدی
همکاری منبع انرژی، تغذیه سایاهالز،
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم دامی و جانورشناسی
چکیده انگلیسی
This study was undertaken to evaluate the effects of partially replacing dietary ground corn with a microalgae meal from Prototheca moriformis (composed of deoiled microalgae and soyhulls) on milk yield and composition, nutrient intake, total-tract apparent digestibility, and blood profile of lactating dairy cows. Twenty multiparous Holstein cows (57.7 ± 49.4 d in milk, 25.3 ± 5.3 of milk yield, and 590 ± 71 kg of live weight at the start of experiment, mean ± standard deviation) were used in a cross-over design experiment, with 21-d periods. Diets were no microalgae meal (CON) or 91.8 g/kg of microalgae meal partially replacing dietary ground corn (ALG). Cows showed similar milk yield and composition. The 3.5% fat-corrected milk production was 30.2 ± 1.34 kg/d for CON and 31.1 ± 1.42 kg/d for ALG. Despite cows having similar dry matter intake, ALG increased neutral detergent fiber and ether extract intake. In addition, cows fed ALG exhibited higher ether extract digestibility. No differences were detected in glucose, urea, amino-aspartate transferase, and gamma-glutamyl transferase blood concentrations. Feeding ALG increased the total cholesterol and high-density lipoprotein in blood compared with CON. The microalgae meal may partially replace ground corn in diets of lactating cows without impairing the animal's performance.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Dairy Science - Volume 99, Issue 11, November 2016, Pages 8880-8884
نویسندگان
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