in this study, the incomplete gamma function, an exponential function, a mixed-log function and a polynomial function were evaluated to describe the lactation curve in moroccan holstein-friesian dairy cows. data from 1990 to 1999, comprising 77130 monthly milk yields of 6029 dairy cows in 280 dairy herds, were used. edits were carried out by considering the lactation length (5 d and

Human milk (HM) appetite hormones and macronutrients may mediate satiety in breastfed infants. This study investigated associations between maternal adiposity and concentrations of HM leptin, adiponectin, protein and lactose, and whether these concentrations and the relationship between body mass index and percentage fat mass (%FM) in a breastfeeding population change over the first year of lac...

Data pertaining to 11728 test-day daily milk yields of normal and mastitis Karan Fries cows were collected from the institute herd and divided as mastitis and nonmastitis and parity-wise. The data of lactation curves of the normal and mastitis crossbred cows was analyzed using gamma type function. FTDMY in normal and mastitis cows showed an increasing trend from TD-1 to TD-4 and a gradual decre...

twenty pregnant buffaloes, eight weeks before the expected calving date, were assigned into two homogeneous groups of 10 animals each, according to their season of lactation (2nd to 8th season of lactation); the first group (g1) were fed on a ration consisting of concentrate feed mixture (22% yellow corn, 35% cotton seed meal, 33% wheat bran, 4% rice bran, 3% molasses, 2% limestone and 1% sodiu...

The aim of this study was the evaluation heat stress in milk production dairy cows (daily yield; 1st lactation). comparison performed between fraternal twins (full sisters), produced on same farm and parity. One a hot period whereas her sister cooler period. Also, there can be differences twins. Therefore, second group also created that without stress. Databases were analysed using PROC GLM ana...

Twenty pregnant buffaloes, eight weeks before the expected calving date, were assigned into two homogeneous groups of 10 animals each, according to their season of lactation (2nd to 8th season of lactation); The first group (G1) were fed on a ration consisting of concentrate feed mixture (22% yellow corn, 35% cotton seed meal, 33% wheat bran, 4% rice bran, 3% molasses, 2% limestone and 1% sodiu...

Increased productivity in the industry can be achieved by breeding for productive longevity through searching and using genetic markers. The study analysed data of 1476 animals with at least one completed lactation. Depending on linear affiliation kappa-casein gene genotype servicing bulls, their female offspring were divided into 4 groups. CSN3 A allele frequency studied bulls was 81.91%, B 18...

The study was conducted to estimate the genetic and phenotypic correlations among body measurements, body weight, kidding interval, kidding rate and milk yield in the different breeds of goat. Data was collected on 95 goats of three breeds (Jamunapari, Black Bengal and their crosses (Jamunapari×Black Bengal) through direct observation. The average body weight of Jamunapari goat was 34.75 ± 3.33...

S ADSA Student Affiliate Division * Author Presenting Paper Original Research/Independent Study Undergraduate Paper Presentations 957 The luteolytic potential of reduced doses of prostaglandin. J. Brinkerhoff*, R. Silcox, J. Donley, and C. Kubo, Brigham Young University, Provo, UT. Prostaglandin (PGF) and its analogs have greatly contributed to managing the reproductive performance of dairy her...

Characterization of factors influencing estrus and ovulation in sows may facilitate development of procedures for improving reproductive performance. The experiment was conducted in confinement during 1997 to 1999 using 174 Large White x Landrace sows. After weaning, sows were checked for estrus twice daily. In the 1st yr, transrectal ultrasound was performed once daily and in the 2nd yr twice ...