Impairment in nutritive value of corn grain damaged by Nigrospora oryzae.
نویسندگان
چکیده
T HE extent of infection of the corn grain by fungi of various kinds is an important item in the grading of corn by physical or chemical means or by performance tests. It may also be an important item in the feeding value of the grain for livestock. Mitchell and Beadles (i94o) have studied the impairment in the nutritive value of corn by various types of ear rot, using growing albino rats as test animals. They reported that infection with diplodia or fusarium ear rot definitely lowered the digestibility of both protein and energy in corn, as well as the growth promoting value. A sample of corn containing ~3 percent of kernels damaged by the gibberella organism was extremely toxic for the young albino rat. Many references in the literature reporting observations on the feeding value, or the toxicity, of "moldy" corn are difficult to evaluate because the type of the infective organisms was not identified. Usually the Nigrospora oryzae organism is of small importance in the state of Illinois as a corn-damaging agent, but in i94~ it occasioned the most prevalent type of ear rot. Quoting Dungan and associates (i946): "In some parts of the state it was most damaging to the late-planted corn that was caught by frost. It also occurred more than usual in many early fields. Nigrospora makes the cobs fragile. Part of the loss from it comes during husking, when the cobs are apt to break. Broken cobs mean corn wasted on the ground." Since many inquiries have been received from livestock feeders concerning the feeding value of corn infected with this fungus, tests were made with such damaged corn using young albino rats as subjects. Essentially the same technic was used as that employed previously by Mitchell and Beadles (i94o).
منابع مشابه
The Comparative Nutritive Value of Yellow Corn and the Grain Sorghums Hegari and Yellow
The sorghum grains are of great economic importance in the arid Southwest. They are immigrant crops, native to South Africa, which have proved themselves to be well adapted for growth in the southwestern plains, for they are drought resistant and high yielding with a minimum amount of water (19).^ For this reason they are widely used in animal feeding rations in place of yellow corn, which can ...
متن کاملChanges in availability and nutritive value of different corn residue parts as affected by early and late grazing seasons.
Two early- (EG) and two late-season (LG) corn-residue grazing trials were conducted either from October to December or from December to March (1987 and 1988) using both nonirrigated and irrigated fields. Initial availability, disappearance, and nutritive value of different corn residue components were estimated. Stocking rates were 1.97, 2.20, 1.36, and 2.58 animals/ha for the two EG and LG non...
متن کاملNutritive value of protein in high and low protein content sorghum grain as measured by rat performance and amino acid assays.
The nutritive value of protein of 2 sorghum grain composites containing 7.9% and 11.8% protein, respectively, was compared on the basis of growth of rats and amino acid analyses. The high protein sorghum grain had higher percentages of all the 17 amino acids studied than did the low protein sorghum grain. In both grains, lysine was the most deficient amino acid, and content of sulfur-containing...
متن کاملA New Eudesmane Sesquiterpene from Nigrospora oryzae, an Endophytic Fungus of Aquilaria sinensis
A new eudesmane-type sesquiterpene, 11-hydroxycapitulatin B (1), along with a known related sesquiterpene, capitulatin B (2), was isolated from the endophytic fungus Nigrospora oryzae A8 from Aquilaria sinensis, the only plant resource for agarwood production in China. This research demonstrates that the endophytic fungi from A. sinensis might play a role in the formation of agarwood.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Journal of animal science
دوره 6 3 شماره
صفحات -
تاریخ انتشار 1947