Modeling and genetic parameters of lactation curves in Holstein bovine breed in Colombia
Journal Title: Revista MVZ Cordoba - Year 2012, Vol 17, Issue 2
Abstract
Evaluate different mathematical models applied to lactation curves, determine which of them represent the best fit and estimate genetic parameters for the characteristics derived from the best model.
Authors and Affiliations
Jhon Cañas A, M. Sc| Universidad de Antioquia, Facultad de Ciencias Agrarias. Instituto de Biología, GaMMA: Grupo de investigación en Genética, Mejoramiento y Modelación Animal, Medellín, Colombia., Mario Cerón-Muñoz, Ph. D *| Universidad de Antioquia, Facultad de Ciencias Agrarias. Instituto de Biología, GaMMA: Grupo de investigación en Genética, Mejoramiento y Modelación Animal, Medellín, Colombia.Universidad de Antioquia, Facultad de Ciencias Agrarias, Medellín, Colombia.Correspondencia: mceronm@agronica.udea.edu.co, Juan Corrales A, M. Sc| Universidad de Antioquia, Facultad de Ciencias Agrarias. Instituto de Biología, GaMMA: Grupo de investigación en Genética, Mejoramiento y Modelación Animal, Medellín, Colombia.
Dental enamel micro-hardness for permanent central incisors in two beef cattle genotypes
Objective. To evaluate the microhardness of tooth enamel from creole steers of Patagonian origin and from indicus cross raised in different environments. Materials and methods. Right central incisors from adult steers we...
Physiology of acid-base balance in bovines with diarrhea backgrounds from Monteria, Colombia
Objective. Evaluate the acid-base balance (ABB) in bovines with diarrheic backgrounds in four areas of Montería, Colombia. Materials and methods. From a total of 300 pregnant cows, 60 were selected with their newborns. A...
Clinical and histopathological study of the phototoxic dermatitis in Zebu calves in grazing of Brachiaria decumbens
The objective was to study the clinical and histopathological aspects of Phototoxic Dermatitis Secondary (PDS), secondary to ingestion of Brachiaria decumbens in Zebu calves (Bos indicus) department of Cordoba, Colombia.
Effect of energy sources on the apparent total tract digestibility and excretion of nutrients by bovine cattle
Objective. To evaluate the effect of three energy sources on the intake, total apparent digestibility and excretion of nutrients in cattle diet. Materials and methods. Six ruminally cannulated cows (730 ± 70 kg) were dis...
CHARACTERIZATION HISTOPATOLOGICAL OF GASTRITIS ASSOCIATED TO Helicobacter spp PRESENCE IN STOMACHES OF HORSES
Objective. To Characterize the type of histopatological lesion associated to Helicobacter spp presence in gastric ulcers of horses. Materials and methods. It was inclueded 25 horses of stomaches with sings of positive ul...