کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2457987 1110739 2008 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Diet and nutrition of range goats on a sarcocaulescent shrubland from Baja California Sur, Mexico
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم دامی و جانورشناسی
پیش نمایش صفحه اول مقاله
Diet and nutrition of range goats on a sarcocaulescent shrubland from Baja California Sur, Mexico
چکیده انگلیسی

Botanical composition of diets of range goats was studied to determine seasonal preference indices of forage species and nutritional quality of selected diets on a sarcocaulescent shrubland from the Sonoran desert in Baja California Sur, Mexico. Extrusas from five esophageal cannulated adult female goats (40 kg of BW) were collected at the beginning and at the end of each season from April of 2001 to March of 2002. At the end of spring, goats selected higher amounts of browse legumes and cacti species, but during late summer, autumn and winter goats mainly preferred browse non-legumes followed by forb species. Goats selected a constant diet in truly digestible crude protein (annual mean = 11 ± 0.4% DM) and metabolizable energy (2.4 ± 0.1 Mcal kg−1) throughout the year. However, during late spring and early summer, goats selected diets higher in non-structural carbohydrates (NSC), truly IVDOM and truly digestible NSC. Dietary Ca, Mg, K, Mn, Fe were in substantial amounts to meet requirements of a range goat weighing 40.0 kg BW consuming 76.3 g DM kg0.75 d−1 in all seasons. It is concluded that range goats may require supplementary protein and energy to overcome pregnancy and lactation requirements throughout the year. Copper content appeared marginally deficient almost the entire year and Zn during late summer and autumn.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Small Ruminant Research - Volume 76, Issue 3, May 2008, Pages 166–176
نویسندگان
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