Results 21 to 30 of about 2,083,504 (286)
Modelling the lactation curve of dairy cows using the differentials of growth functions [PDF]
, 2008 Descriptions of entire lactations were investigated using six mathematical equations. comprising the differentials of four growth functions (logistic. Gompertz, Schumacher and Morgan) and two other equations (Wood and Dijkstra).
M. H. FATHI NASRI +14 more
core +1 more source
Evaluation of production performance of Binjharpuri cattle of Odisha
Indian Journal of Animal Sciences, 2023 Binjharpuri, a dual purpose indigenous breed of Odisha is commonly reared for its various advantages, viz. optimum milk production in low input management system, excellent draft ability in hot humid climate condition and heat resistance ability. In the
NAYAK S +6 more
doaj +1 more source
Cow, farm, and herd management factors in the dry period associated with raised somatic cell counts in early lactation [PDF]
, 2008 This study investigated cow characteristics, farm facilities, and herd management strategies during the dry period to examine their joint influence on somatic cell counts (SCC) in early lactation.
Browne, W. J. +10 more
core +1 more source
Influence of Length of Dry Period on subsequent Lactation in the Rat
Journal of Dairy Science, 1969 Abstract Rats given a four-day dry period produced approximately 28 (P 0.05) heavier litters between Days 8 and 16 of lactation than rats given zero-day or longer (8, 12, or 16 days) dry periods, respectively. On the first day of lactation mammary glands of rats given an eight- or zero-day dry period contained 14 ...
M J, Paape, H A, Tucker
openaire +2 more sources
PLoS ONE, 2016 Gender of the calf whose birth initiates lactation could influence whole lactation milk yield of the dam due to hormonal influences on mammary gland development, or through calf gender effects on gestation length.
Melanie K Hess +2 more
doaj +1 more source
Effect of Dry Period Length on Milk Production in Subsequent Lactation
Journal of Dairy Science, 1991 The effect of planned dry period lengths of 4, 7, and 10 wk on subsequent lactational yield was estimated with 366 cows in an experiment in which dry period was manipulated independently of milk yield prior to drying off. In two herds, all three treatments were compared within herd; in six herds, two treatments were compared within herd.
Sørensen, J.T., Enevoldsen, Carsten
openaire +4 more sources
Italian Journal of Animal Science, 2010 The objectives of this study were to estimate genetic parameters for unadjusted and adjusted milk production for 270 and 305 days of lactation and, subsequently, to verify the coincidence of rank of 2%, 5%, 20% and 40% best sires selected based on both ...
L.G. Albuquerque +3 more
doaj +1 more source
Productive performance of indigenous and HF crossbred dairy cows in Gondar, Ethiopia [PDF]
Veterinary World, 2014 Aim: To study the magnitude of variation in lactation length (LL), lactation milk yield (LMY) and peak-yield (PY)due to genetic and non-genetic cases in indigenous and crossbred cattle reared under private dairy unit in and around Gondar, Ethiopia ...
Niraj Kumar +3 more
doaj +1 more source
Genetics and Molecular Biology, 2011 The objectives of this study were to estimate the genetic parameters for milk yield unadjusted and adjusted for days in milk and, subsequently, to assess the influence of adjusting for days in milk on sire rank. Complete lactations from 90 or 150 days of
Fernando Baldi +6 more
doaj +1 more source
Effect of dry period length on milk yield over multiple lactations [PDF]
Journal of Dairy Science, 2017 Shortening or omitting the dry period (DP) can improve the energy balance of dairy cows in early lactation through a decrease in milk yield after calving. Little is known about the effect of a short or no DP on milk yield over multiple lactations. Our objectives were (1) to assess the effect of DP length over multiple lactations on milk yield, and (2 ...
Kok, A. +6 more
openaire +3 more sources