The data pertaining to variable production and reproduction traits of Murrah buffaloes (1980 lactation records of 698 Murrah buffaloes) were collected from the Central Cattle Breeding Farm, Alamadhi, Tamil Nadu, India. The overall leastsquares means (± SE) for peak yield, days to attain peak yield, 305-day milk yield, lactation length, lactation milk yield, service period, calving interval and ...

The objective of this research project was to ascertain the hygiene quality and some physicochemical properties of milk obtained from mares of the Wielkopolska breed at different periods of lactation. Colostrum and milk for analyses were collected on days: 1, 2, 3, 4 and 5 of lactation and afterwards at 15-day intervals up to day 150 of lactation. A significant influence of lactation on levels ...

The objectives of this research were to characterize dry period lengths for US Jerseys, determine the effects of days dry (DD) on subsequent lactation actual milk, fat, and protein yields, fat and protein percentages, somatic cell score (SCS), and days open (DO), and to determine the dry period length that maximizes yield across lactations. Field data, collected through the Dairy Herd Improveme...

the objective of this study was to investigate the effect of principal components (pc) of the regression coefficients (co)variance matrix on the lactation curve, and on the formation of selection index to modify the curve, based on these pc’s, and as well to estimate additive genetic and phenotypic variances and heritability of the constructed selection index. lactation period of 301 d (5-305) ...

Data of 698 Murrah cows sired by 43 bulls maintained at the Central Cattle Breeding Farm, Alamadhi were analysed to study the performance of Murrah buffaloes at the coastal region of Tamil Nadu, India. Least-squares means and genetic parameters were estimated for different first lactation traits. The averages for 305-day and total lactation milk yields were 1616.3 ± 39.6 and 1686.2 ± 44.4 kg, r...

We compared the effects of environmental enrichment (EE) and tactile stimulation (handling [H]) during a critical period of development of the central nervous system (CNS) on behavior in malnourished (M; 6% protein) and control (C; 16% protein) rats in the elevated plus maze (EPM) on postnatal day 36 (P36) and P37. The stimulation occurred during two different periods of development: P8-21 (lac...

This study was conducted to determine mortality of swamp calves under semi-intensive rearing conditions at Shtiha government Station in Al-Ghab District, Syria. A total 501 buffalo born throughout period 2008-2018 were analyzed for suckling calf rate study. SAS software (2012) used compare four mathematical models [basic and full linear fixed models, logistic, logarithmic (Log linear) models] e...

in order to estimate the genetic parameters and comparison legendre polynomials for production traits of iranian holstein dairy cattle test-day records of first lactation cows for milk yield, fat yield, protein yield, fat percentage and protein percentage traits were used. these records collected from 2006 to 2010, by the animal breeding center of iran. the genetic parameters were estimated usi...

Records for daily feed intake during lactation were available for 774 sows with 2,234 litters farrowing from May 2002 to November 2006. Genetic parameters were estimated for whole-oflactation feed intake and feed intake averaged over 5-day periods during lactation. Estimates of heritabilities and the permanent environment of the sow were 0.16±0.05 and 0.18±0.04 for total lactation feed intake a...