ABSTRACT The objectives of this work were to estimate the genetic parameters for the traits longevity (LG) and accumulated milk yield at 305 days (MY305) using a bitrait animal model and the single-step GBLUP method and estimate the genetic gain for LG through direct and indirect selection for MY305. We used 4,057 records of first lactations of Murrah dairy buffaloes, collected between 1987 and 2020, belonging to six Brazilian herds located in the states Ceará, Rio Grande do Norte, and […]

This trial was conducted to study the production and biological efficiency of 48 buffaloes averaging 18 months of age and initial body weight of 330 kg finished in feedlot. Sixteen animals from each of the following breeds were used: Murrah (MUR), Jafarabadi (JAF), and Mediterranean (MED). Within each genetic group, four animals (references) were randomly assigned to initial slaughter in order to determine empty body weight (EBW) and initial carcass. The remaining 12 animals from each genetic group were randomly […]

This work was conducted to study the quantitative carcass traits of 36 buffaloes (12 Murrah – MUR, 12 Jafarabadi – JAF and 12 Mediterranean – MED) averaging 18 months old and initial body weight (BW) of 330 kg finished in feedlot. Twelve animals of each genetic group were randomly assigned to three sub-groups (four animals) and distributed to the following treatments: Maturity 1 – slaughter weight at 400 kg of BW, Maturity 2 – slaughter weight at 450 kg of […]

The objective of this trial was to investigate correlations among the California Mastitis Test, somatic cells count (SCC), and milk yield. Milk samples were collected from thirty-eight Murrah buffalo cows in the years of 2002 and 2003. Milking management included cleaning teats with individual paper towel followed by attachment of the milk units in cows that were milked once daily. The CMT was done immediately after teat cleaning and collected milk samples were sent to the laboratory for determination of […]