In the present study, first lactation test day and monthly milk records of 301 Murrah buffaloes were used for prediction 305-day yield (FL305DMY) using artificial neural network (ANN) was compared with multiple linear regression (MLR). Models evaluated on basis coefficient determination root mean square error (RMSE). Two different input sets (Input set-1 Input set-2) in study. set-1, four yield...

The Ural type of the domestic Black-and-White mottled breed is characterized high milk-yield rates and good suitability for industrial milking technology. milk yield increase led to a deterioration reproductive functions in livestock. As result research it was found that process prolonged using cattle, cows regularly changes, reaching highest among mature by 3rd lactation, then gradually decrea...

1. Akers R.M. (Editor), 2002. Lactation and the mammary gland. 1st Edition. Wiley-Blackwell. Hoboken, NJ (USA) Google Scholar

Abstract. The purpose of the research is to study age retirement cows from herd, depending on various genetic and paratypical factors. Methods. was carried out according data a black-and-white breed dairy herd Chelyabinsk region. studied animals different ages were divided into groups relative live weight at first fruitful insemination, mothers bulls-producers Holstein lines. paper analyzes for...

A genome wide association study was conducted using estimated breeding value (EBV) for milk production traits from 1st to 4th lactation. Significant single nucleotide polymorphism (SNP) markers were selected for each trait and the differences were compared by lactation. DNA samples were taken from 456 animals with EBV which are Holstein proven bulls whose semen is being sold or the daughters of...

In surrogate pregnancies genetic parents have little opportunity for early bonding with their infants either prenatally (in utero) or during the immediate postnatal period. Procedures commonly used to induce lactation include both pharmacologic and nonpharmacologic methods often in combination. Studies reporting induced lactation are sparse due to the rarity of augmented lactation. Here we repo...

The aim of the present study was to compare the occurrence and duration of clinical mastitis in different seasons, stages of lactation period and parities in a Holstein dairy farm in Iran. A retrospective epidemiological survey from April 2005 to March 2008 was conducted on 884 clinical mastitis cases of 7437 lactations. Data of each case including calendar-date of mastitis onset, days in milk ...

in surrogate pregnancies genetic parents have little opportunity for early bonding with their infants either prenatally (in utero) or during the immediate postnatal period. procedures commonly used to induce lactation include both pharmacologic and nonpharmacologic methods often in combination. studies reporting induced lactation are sparse due to the rarity of augmented lactation. here we repo...