Evaluation of milk production and some blood parameters in lactating autochthonous goat extensively reared in Molise region

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Abstract
The trial, lasted 7 months and was performed on 60 lactating autochthonous goat populations (Montefalcone and Valfortorina) extensively reared in Molise Region. Goat milk yield and composition, and pasture chemical and floristic composition were recorded monthly. At the beginning (30d), at half (105d) and at the end (210d) of trial body weight and body condition score (BCS) were recorded; besides jugular blood samples were taken at 30, 105 e 210 d to determined the following parameters: glucose, total protein, albumin, urea, triglycerides, total and HDL cholesterol, NEFA, calcium, magnesium, sodium and potassium. The two populations showed a milk yield of 275 kg e 258 kg (Montefalcone e Valfortorina goat, respectively) throughout 180 days of lactation, which was similar or higher than mean milk yield of other goat breeds (Sarda, Ionica, Argentata dell’Etna). BCS increased significantly (P<0.01) during lactation in both populations. Blood parameters displayed significant changes (P<0.01) during the trial in Montefalcone goat for glucose, albumin, urea, triglycerides, total and HDL cholesterol, NEFA, sodium and potassium instead Valfortorina goat showed significant differences in total protein, urea, total and HDL cholesterol, NEFA, magnesium, sodium (P<0.01) and albumin and potassium (P<0.05). In both population, milk yield and quality showed promising results for autochthonous goats preservation.