Uso de grasas sobrepasantes sobre la producción y reproducción de vacas jersey en la Hacienda La Virginia

Abstract

At "La Virginia" farm, located on Shugal. Chambo canton, Chimborazo province, feeding supplementary effect with business extract and extract elaborated with two types of by-pass fats (calcicum soap of palm oil residues and ovine tallow) was evaluated and compared with a control treatment (without supplementation ) that means four experimental treatments were evaluated with a complrtely randomized desing ( CRD ) to get the different productive variables during 20 days of investigation. By using extract made with calcium soap based on palm oild residues, the high final weigth, better body condition, performance in milk production, high content of fat in the milk, less birth interval - first service, less number of services / conception, high weight of the young and the less contents of glucose, cholesterol and plasmatic triglicerids were determined. Therefore, it is recommended to use this calcium soap in the feeding supplementation of Jersey cows during breastfeeding due to the best productive and economic performance and to transfer the present study to Jersey cows producer in the central zone of the country in order to take advantage the energetic sources of lows cost to formulate extracts.