in order to determine probable effects of sowing dates on partitioning coefficient of dry matter to different organs (leaf, stem and reproductive organs) in different wheat varieties (koohdasht, zagros and tajan) an experiment with crbd design and four replications was conducted. 5 sowing dates were included (29 december, 2007, 30 january, 2 march, 27 march, 1may, 2008). in order to quantify pa...

investigation of drought event has a great importance in the natural resources management and planning water resources management. in this research, the effect of the climate change on drought characteristics in northwest of iran was investigated using the hadcm3 model under a2 scenario. the statistical downscaling was executed using sdsm 4.2.9 and observed daily precipitation, observed predict...

The dry period is required to facilitate cell turnover in the bovine mammary gland in order to optimize milk yield in the next lactation. Traditionally, an 8-week dry period has been a standard management practice for dairy cows based on retrospective analyses of milk yields following various dry period lengths. However, as milk production per cow has increased, transitioning cows from the nonl...

STOJEVIĆ, Z., J. PIRŠLJIN, S. MILINKOVIĆ-TUR, M. ZDELAR-TUK, B. BEER LJUBIĆ: Activities of AST, ALT and GGT in clinically healthy dairy cows during lactation and in the dry period. Vet. arhiv 75, 67-73, 2005. ABSTRACT This study examined the activities of aspartate aminotransferase (AST; EC 2.6.1.1), alanine aminotransferase (ALT; EC 2.6.1.2) and gamma-glutamyltransferase (GGT; EC 2.3.2.2) in t...

to evaluate the effects of different dry period lengths on milk yield, milk composition, reproductive performance and energy balance in dairy cows, 30 holstein breeds (average 270 days pregnant) were made use of in a randomized complete block design. cows were assigned to three treatments (60, 45 and 30 days of dry period) and two blocks as based on parity (either first lactation or multifariou...

This research characterized days dry (DD) for modern US Holsteins. This included investigation of factors influencing DD, summarizing variation in herd means as well as within-herd variation, and estimation of parameters related to DD. Data consisted of records initiated before 2003 from cows first calving after 1996. A total of 459,075 records from 295,067 cows in 3527 herds were included. The...

The most preferred containers by Aedes aegypti were studied April and July (rainy and dry periods) in two Manaus neighbourhoods. In all, 2,700 premises and 13,912 containers were examined, most (87%) recorded outdoors. Out of the 13,100 inspected premises, only 1.6% showed to be positive for Aedes aegypti, summing up to 7,916 collected samples. Most frequently found containers outdoors in eithe...

Studies on the influence of hydrodynamic conditions anthropogenic microfiber (MF) and microplastic (MP) distributions in freshwater environments are sparse. In this study, we evaluated urbanisation gradient spatial variability MFs MPs. Temporal was also assessed by comparing concentrations fluxes MPs under low flow with those during January–February 2018 flood event. For each period, Seine rive...

Recurring elongated dry seasons in South west Nigeria pose a significant threat to livestock production. Knowledge of adaptation strategies build resilience and lowers vulnerabilities climate change among farmers is limited. This study assessed farmers’ knowledge farm management during southwest Nigeria. Using purposive sampling procedure, total 118 were interviewed on periods, specific challen...