Fatores de risco para alta contagem de células somáticas do leite em unidades de produção em assentamentos de Candiota/RS

Dissertação (mestrado profissional) - Universidade Federal de Santa Catarina, Centro de Ciências Agrárias, Programa de Pós-Graduação em Agroecossistemas, Florianópolis, 2018.

Nível de Acesso:openAccess
Publication Date:2018
Main Author: Souza, Afonso Campos
Orientador/a: Machado, Luiz Carlos Pinheiro
Co-orientador/a: Schuch, Luiz Filipe Damé
Format: Dissertação
Online Access:https://repositorio.ufsc.br/handle/123456789/194319
Resumo inglês:Abstract : One of the important factors for obtaining a good quality milk is the adequate sanity of the herd. Somatic Cell Count (CCS) in milk is one of the main parameters currently used to estimate the health of the mammary gland of dairy cows. The objective of this work was: to identify management that impact on the quality of fresh milk, adopted by settled families, having as parameters the CCS; seek common elements that characterize the category with superior quality; to evaluate the factors that differentiate establishments with high quality from those with inferior quality. The work was developed in Farmers' Units (UPCs) of farmers associated with Cooperativa Terra Gaúcha LTDA, with headquarters in the municipality of Candiota / RS, located in the southern half of the state. For this study, we selected UPCs that delivered milk to the industry during the period from November 2015 to October 2016. The methodological option was to apply a case-control study. The groups selected from the arithmetic mean of CCS in the period were selected, selecting UPCs with CCS above 900,000 cells / ml and controlling UPC with CCS below 400,000 cells / ml as a control. In all, 62 establishments were included, 31 in each study group. These are located in 20 different settlements, except a UPC. During the visits, 504 cows were milked (mean of 8.12 cows / UPC), with a production of approximately 4,600 L / day, 73 L / UPC. The significant risk factors were: type and conservation of milking parlor floor, feeding cows during milking, number of lactating cows and daily production, milking system used, isolation of Streptococcus spp. and the importance of activity in family income. The protective factors were: the use of the calf. Other factors related to hygiene and management, which were expected to be indicators of milk quality / CCS, were not significant in this study, suggesting that other subjective factors interfere with milk quality. Thus, a different and more detailed study of the routine of the peasant family producing milk is demanded.