Animal and poultry nutrition
Mahla saeedi; Mohammad Mahdi Sharifi Hosseini; Kazem Jafari Naimi; Omid Dayani
Abstract
This research was designed to compare the effect of processing corn silage, and barley and corn grains on feed intake, digestibility and rumen parameters in sheep. Eight Kermani lambs were used with average weight of 53.2±4.1 kg. The experiment was carried out as 2×2 factorial design in ...
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This research was designed to compare the effect of processing corn silage, and barley and corn grains on feed intake, digestibility and rumen parameters in sheep. Eight Kermani lambs were used with average weight of 53.2±4.1 kg. The experiment was carried out as 2×2 factorial design in the form of a Latin square design in four periods of 21 days. A part of chopped corn forage was processed. Silages were prepared from processed and unprocessed forage in nylon bags. The experimental diets were 1. Diet with 30% processed silage with barley grain, 2 .Diet with 30% processed silage with corn grain, 3. Diet with unprocessed silage with Barley grain and 4. Diet with unprocessed silage with corn grain. Physical processing of corn forage increased the pH of silage, but the sensory evaluation score decreased (P=0.01). The dry matter (DM) intake was higher in diets containing processed silage (1.96 vs 1.82 kg, P<0.04). The digestibility of organic matter (OM) was higher in the corn grain diet and the diet with processed silage. The feed intake and the rumen pH levels were lower in processed silage diets and ammonia nitrogen concentration was lower in the processed silage with barley grain diet (P<0.05) eight hours after feeding. The time of feed intake and rumination were higher in unprocessed silage diets. In general, the processing of corn forage increased the DM intake and increased the OM and protein digestibility in sheep. The effect of grain types on animal responses was less than processing levels.
Reza aghaeipoor; mohammad mahdi sharifi hosseini; Reza Tahmasbi; Omid Dayani
Abstract
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 ...
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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.
