Efecto de la biocolina sobre calidad de leche y comportamiento productivo pre y postparto en vacas lecheras.

• Autor: Valencia Narváez, Miguel Ángel
• Formato: tesis de grado
• Fecha de Publicación: 2019
• Institución: Universidad Nacional de Trujillo
• Repositorio: UNITRU-Tesis
• Lenguaje: español
• OAI Identifier: oai:dspace.unitru.edu.pe:20.500.14414/13313
• Enlace del recurso: https://hdl.handle.net/20.500.14414/13313
• Nivel de acceso: acceso abierto
• Materia: Biocolina; Vacas lecheras; Comportamiento productivo; Calidad de leche

The aim of the present investigation was to determine the effect of Biocholine on the quality of milk and the productive performance of dairy cows before and after delivery. 60 cows in prepartum were randomized into: treatment with protected choline (TCP) or control and treatment with biocholine (TB), with 30 repetitions each; TCP received 0,06 kg/cow/day of protected choline and TB received 0,02 kg/cow/day of biocholine. The biocholine was mixed to a premix, finally adding to the fully mixed ration (RTM). Colostrum production, and milk production were evaluated in three daily milkings for 60 days; weight and size of the calf at birth, percentages of fat, protein and non-fatty solids (SNG). Body condition was monitored in prepartum, delivery, initiation of lactation and 30 and 60 days after delivery, as well as metabolic problems and the benefit/cost ratio were evaluated. In the production of milk, amount of colostrum, weight and size of the calf and body condition no statistical differences were found (p > 0,05) between the treatments. In the quality of the milk, statistical differences were observed (p < 0,05) in the percentage of protein of the TCP in comparison with the TB, also a numerical difference in the TB in the percentage of fat was observed. There were no metabolic problems, but there were infectious problems. The TB obtained a better benefit/cost ratio. The results allow us to conclude that biocholine did not have a significant effect on the quality of the milk and the productive performance before and after the delivery in dairy cows, however, presented a better economic benefit.