Comfrey as a feed for swine
Sergio E. Oyarzun
Authors AffiliationsHubert Heitman, Jr. is Professor, Department of Animal Science, University of California, Davis; Sergio E. Oyarzun, graduate student, is now Associate Professor, Swine Husbandry, University of Chile, Santiago. Financial support was received from the Chevron Chemical Co., San Francisco.
Hilgardia 25(1):7-8. DOI:10.3733/ca.v025n01p7. January 1971.
Under the conditions of these experiments, dehydrated comfrey was not a suitable ingredient for a laboratory rat ration at the 20% level, where it supplied half of the protein, and it was completely unsatisfactory at the 40% level. The swine digestion trial indicated that the comfrey used had a dry matter content of 12.1% digestible crude protein, and 52.7% TDN content. The ratings for crude protein, total digestible nutrient content and nitrogenfree extract were all lower for comfrey than for the control ration.
Also in this issue:A bibliography of the fig
Agriculture and the water subsidy myth
Clam shell insect sampler allows absolute insect population estimates
Weed control in asparagus direct-seeded under semi-arid conditions
Streptomycin vs. copper for controlling fireblight of pear in California, 1970
Relationship of navel orangeworm moths to hard shell and soft shell almonds
Identification of odors from cattle feed lots
Douglas-fir fertilizer trials in Humboldt County
Systemic fungicides for control of fusarium corm rot of gladiolus