Ammonia emissions and odor are being used to regulate animal produc­ tion. The objectives of this study were to observe the effects of restricted feeding dairy heifers high concentrate (HC) and low concentrate (LC) diets with different forage quality on NH3 emissions and odor. A split plot design with diet type as the whole plot and forage quality as sub­ plot was administered in a 4-period (21...

Selenium (Se) was applied to perennial ryegrass (Lolium perenne) and subterranean clover (Trifolium subterranean) pasture as a fertilizer to determine the effect of Se form and concentration on Se accumulation in subsequent forage growth. Treatments were a no Se control, 0.6 kg/ ha Se as sodium selenate, and 0.6, 1.1, and 2.2 kg/ha Se as sodium selenite, all applied to pasture plots with low so...

Astragalus fridae Rech. F. is a native and endemic species in Iran. Considering the circumstances of this species in the country and the world and the importance of conservation of genetic resources, the awareness of A. fridae forage quality seems necessary. For this purpose, forage samples of A. fridae were taken at four phenological stages including vegetative growth, flowering, seed setting ...

BACKGROUND Current plant--herbivore interaction models and experiments with mammalian herbivores grazing plant monocultures show the superiority of a maximizing forage quality strategy (MFQ) over a maximizing intake strategy (MI). However, there is a lack of evidence whether grazers comply with the model predictions under field conditions. METHODOLOGY/FINDINGS We assessed diet selection of sh...

Suwarno, Wittenberg, K. M., Ingalls, J. R. and McCaughey, W. P. 2000. Performance of lactating dairy cows fed macerated forage conserved as silage and hay. Can. J. Anim. Sci. 80: 123–129. The effect of forage maceration at harvest on silage characteristics and its effect on lactation performance of Holstein cows were determined. Either a roller conditioner or a prototype forage macerator manufa...

take potential (Van Soest, 1994). The concentration of NDF is heritable in several forage species, and rates of gain Voluntary intake is generally considered to be the single most from selection for reduced NDF concentration of herbimportant factor limiting animal performance on high-forage diets. Neutral detergent fiber (NDF) is the laboratory variable most closely age are reported to be as hi...

Salinity stress is a brutal environmental stress which decreases the yield production of plants. Questions rise on which of the ionic stress or lack of water has deleterious effects on plants forage dry yield. Also, questions remain on whether the K+ reduction or Na+ accumulation is more important in forage dry yield reduction under salinity stress. The present experiment was conducted to answe...

A control group of 6 rabbits (Group A) received forage from uncontaminated areas. Two other groups (B and C) of 6 and 8 rabbi ts, 'respectively, were fed forage grown near Chizzola exclusively. Seventy days after the beginning of the experiment, the S rabbits of Group C were given forage artificially polluted with material obtained from the purifying equipment of the factory after it had been t...