جستجوی مقالات مرتبط با کلیدواژه "raini goat" در نشریات گروه "علوم دام"

In order to compare the effect of corn, sorghum and millet silages in experimental diets on nutrient intake, digestibility, and ruminal parameters, six two-year-old male Rainy goats were used with an average weight of 37±6.5 in a 3×3 Latin square design. Dry matter and other nutrients intake was higher in corn silage diet than the other two experimental diets and in sorghum silage diet was higher than millet silage diet (P<0.05). The organic of matter digestibility was higher in corn silage than millet silage diet (P<0.05). The rumen NH3-N concentration in corn silage diet was higher than millet silage diet at two, four, six and eight hours after feeding (P<0.05), but there was no significant difference between diets containing corn silage and sorghum silage at any time. The ruminal pH in sorghum silage was lower than the other two experimental diets at Eight hours after feed intake (P<0.05). The population of Holotrich, Cellolytic, entodinium protozoa and the total population of protozoa were higher in corn silage than sorghum silage diet and in sorghum silage diet were higher than the diet millet silage diet (P<0.05). The type of silages in the experimental diets had no significant effect on the production of ruminal microbial protein. But the production of valeric and isovaleric acid was higher in the millet silage diet than the sorghum silage diet (P<0.05). The experimental results showed a better quality of corn silage, but water shortages and recent droughts make it necessary to plant fodder with lower water consumption.

Twenty male Raini goats with an average live weight of 30 ± 2.5 kg and 18 month of age., were used in a completely randomized design with 4 experimental diets and 5 replications to study effect of different levels By-Pass(UDP) protein(2.75, 4.86, 5.91 and 6.97 percent in dry matter) on growth and carcass characteristics. Metabolismable Energy (ME) level of the all diets were similar (10.04 MJ ME/Kg DM). The control treatment diet was offered the level of Undegradable protein (2.75 % DM) which recommended by AFRC (1998). The goats were weighted at fortinightly intervals during the 84 days experimental period. The average of daily live weight gain of treatment were respectivelity 68, 87.3, 99.5 and 117 g/days and feed conversion were respectvelity18.38, 13.86, 12.21 and 10.56. The result indicated that high levels By-Pass protein significantly (P<0.05) increased daily live weight gain and improvement feed conversion compared with control group (UDP = 2.75). But there was no such a significantly for dry matter Intake in different treatment (P>0.05). After completion of this period (84 days), in each treatment 3 goats and 12 goats all together were slaughtered, the high levels By-Pass protein diet had significantly increased warm and cold carcass weight compared with control diet (p < 0.05) The results indicated that growth rate and carcass gain were highest in goats fed the greater levels Bypass protein (higher than advised in AFRC). But it is not economically reasonable.