کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8504325 | 1554334 | 2018 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Poisoning by Brachiaria spp. in suckling lambs supplemented and unsupplemented in a creep-feeding system
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم دامی و جانورشناسی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
This study assessed the frequency of poisoning by Brachiaria spp. grasses in 34 suckling lambs in a creep-feeding treatment supplemented with a proteinaceous concentrate and 34 lambs in an unsupplemented control group. Samples of Brachiaria were collected every 28 days for determining the protodioscin content of the grass. Lambs with consistent clinical signs of poisoning by Brachiaria spp. were separated from the flock, along with their dams, and fed on hay from alfalfa (Medicago sativa) and Tifton 85 (Cynodon dactylon) as alternative fibrous feeds. The concentrations of protodioscin were 0.3-0.9 and 0.4-1.4% in the creep-feeding and control treatments, respectively. Creep-fed and control lambs showed clinical signs at 41-48 and 34-74 days of age, respectively. Clinical signs included swelling of the face and ears, alopecia and erythema that evolved to crusting and would slough, leaving exposed areas of erosion, later becoming retracted scars in both ears. The effect of the nutritional treatment differed significantly between treatments (p < 0.1) but not between genetic makeup or year (p > 0.1). We concluded that Brachiaria spp. was toxic to the suckling lambs. Low concentrations of protodioscin were toxic to the lambs, especially if they were genetically susceptible to the poisoning. The intake of the proteinaceous concentrate in the creep-feeding system decreased the effects of intoxication by Brachiaria spp. in the suckling lambs.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Small Ruminant Research - Volume 158, January 2018, Pages 30-34
Journal: Small Ruminant Research - Volume 158, January 2018, Pages 30-34
نویسندگان
Gleice Kelli Ayardes de Melo, Camila Celeste Brandão Ferreira Ítavo, Jonilson Araújo da Silva, Kedma Leonora Silva Monteiro, Tatiane Cargnin Faccin, Rayane Chitolina Pupin, Rubiane Ferreira Heckler, LuÃs Carlos Vinhas Ítavo,