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Abstract

In the fiat coastal plain of Texas bordering on the Gulf of Mexico many of the cattle are undersized, show impaired capacity for reproduction and manifest a depraved appetite and other symptoms of aphosphorosis. The authors studied the effects of P supplements upon beef production and reproduction. ...

Author(s)
Black, W. H.; Task, L. H.; Jones, J. M.; Kleberg, R. J., Jr.
Citation
Technical Bulletin. United States Department of Agriculture, 1943, 856, pp 23 pp.
Abstract

II. A vitamin deficiency in ruminants in the Argentine was reported, caused by a diet of Cynodon hirsutus and C. dactylon. HCN, produced by these grasses, appears to destroy the micro-organisms synthesizing vitamins of the B complex. The conditions responded to injections of the above mentioned...

Author(s)
Anon.
Citation
Recent developments affecting livestock production in the Americas, 1956, pp 83-98 pp.
Abstract

For 126 days 32 crossbred (Holstein x zebu and Brown Swiss x zebu) bullocks, initially 205 kg liveweight, were used in a 4 x 2 factorial experiment with 2 replications. Treatments were sunflower meal at 400, 1000, 1600 or 2200 g daily and the absence or presence of fresh Leucaena forage, 2% of...

Author(s)
Herrera, F.; Wyllie, D.; Preston, T. R.
Citation
Tropical Animal Production, 1980, 5, 1, pp 18-24
Abstract

20% of udder quarters of 55 cows in 3 dairy herds were infected at drying off, the most frequent being Corynebacterium spp. 28%, Staphylococcus spp. 24%, S. aureus 16%, Micrococcus spp. 9% and Streptococcus spp. 9%. At calving, 25% of quarters were infected, 39% of them with Staphylococcus spp. and ...

Author(s)
Campos R., V.; Pérez D., M.; Murillo S., E.
Citation
Memoria, Asociación Latinoamericana de Producción Animal, 1981, 16, pp 172-173
Abstract

Author(s)
Escobar Medina, F. J. (Director)
Publisher
Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional, D.F., Mexico
Citation
Centro de Investigacion, Ensenanza y Extension en Ganaderia Tropical. Boletin Informativo., 1981, pp vi + 180pp.
Abstract

This study measured the space occupied, effective grazing time and displays of aggressive and sociable behaviour of a herd of dairy cattle in Xochimilco, a sub-urban zone of Mexico City during 4 hours of grazing per day, under the supervision of a different herdsman for each of 4 consecutive days....

Author(s)
Vieyra, J.; Losada, H.; Soriano, R.; Cortés, J.; Arias, L.
Publisher
CIPAV Foundation, Cali, Colombia
Citation
Livestock Research for Rural Development, 2000, 12, 2, pp 1-4
AbstractFull Text

These proceedings include 5 seminal papers and 27 case studies on developing breeding strategies for lower input animal production environments. The seminal papers emphasize breeding goal definition, structures and procedures for straight-breeding, structures and procedures for crossbreeding and...

Author(s)
Galal, S.; Boyazoglu, J.; Hammond, K.
Publisher
International Committee for Animal Recording (ICAR), Roma, Italy
Citation
ICAR Technical Series, 2000, No.3, pp iii + 570 pp.
Abstract

An optimal control model was used to analyse the problem of deforestation and reduction of forest cover in Mexico, and the use of those areas for agriculture and pasture lands. The model is based upon function of agriculture and production from which the forest cover potential was estimated at a...

Author(s)
Flores Xolocotzi, R.; Torres Rojo, J. M.
Publisher
Instituto Nacional de Investigaciones Forestales, Agricolas y Pecuarias (INIFAP), Mexico City, Mexico
Citation
Ciencia Forestal en Mexico, 2000, 25, 87, pp 5-24
Abstract

Crisis of the economy and sanitary problems (diseases of cows and use of clenbuterol, in particular) oblige national beef producers to turn strategies allowing survival at the domestic and foreign markets. Production of organic meat free from hormonal compounds, antibiotics, transgenic grain and...

Author(s)
Olivares, P.; Gómez, M.; Schwentesius, R.; Meras, M.
Publisher
Universidad Autónoma Chapingo, Chapingo, Mexico
Citation
Revista Chapingo. Serie Ingeniería Agropecuaria, 2001, 4, 2, pp 77-80
Abstract

This paper analyses the behaviour of national livestock production through valuing indicators of productivity (IP), and identifies their economic variables. Data from 1966 to 1999 were collected regarding to livestock stocks, prices, products and inputs. With this information we estimated (a)...

Author(s)
Espinosa García, J. A.
Publisher
Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias (INIFAP), Mexico City, Mexico
Citation
Técnica Pecuaria en México, 2001, 39, 2, pp 127-138

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