Results 211 to 220 of about 6,238 (254)

Effect of month and season of calving on the length of subsequent calving interval in Nili-Ravi buffaloes

Animal Reproduction Science, 1981
Data pertaining to records of 1,274 calving intervals for 400 breeding buffaloes maintained at the Livestock Experiment Station, Qadirabad, District Sahiwal (Pakistan), were analyzed to investigate the magnitude of influence of month and season of calving on the length of subsequent calving interval.
Nazir Ahmad
exaly   +2 more sources

Calving patterns in seasonal dairy herds

New Zealand Veterinary Journal, 1990
Two field studies examined the calving patterns of cows in seasonal dairy herds in the Waikato (Field Study 1) and South Taranaki regions (Field Study 2). The first study examined patterns for cows commencing their second or subsequent lactation in herds which had used an inseminating service during the previous season.
K L, Macmillan, R I, Henry, V K, Taufa, P, Phillips   +3 more
openaire   +2 more sources

Outbreaks of early-season trichostrongylosis in calves in Denmark

Veterinary Parasitology, 1989
This paper describes clinically manifest infections occurring as early as June and early July in first-season grazing calves in Denmark during the period 1972-1987. Two severe outbreaks in 1976, included in our experiments, were studied in detail. Herbage infectivity was particularly high in grass tufts surrounding cow pats that were present in high ...
P, Nansen, J, Grønvold, R J, Jørgensen, S A, Henriksen, J, Foldager, K, Sejrsen   +5 more
openaire   +2 more sources

Replacing Late Calving Beef Cows to Shorten Calving Season

2020
There are many factors that impact profitability in cow-calf beef production. For example, retaining a female that suffers a failed pregnancy decreases the likelihood of a beef cow or heifer being profitable over her life. Several factors can cause a failed pregnancy, but retaining females that calve late within a defined calving season (days between ...
Martinez, Charley, Boyer, Christopher, Rhinehart, Justin, Burdine, Kenneth, Martinez, Charley, Boyer, Christopher, Rhinehart, Justin, Burdine, Kenneth   +7 more
openaire   +1 more source

Reproductive management of seasonal calving dairy herds

In Practice, 2020
BackgroundSeasonal calving herds account for around a fifth of dairy farms in the UK (AHDB 2016). Their structure allows focused farm management and seasonal labour requirements, as well as the opportunity to maximise the conversion of grazed grass into milk.
George Lindley, Jim Willshire
openaire   +1 more source

Liver Histology of Reindeer Calves during the Winter Season

Anatomia, Histologia, Embryologia, 1993
SummarySeventeen reindeer calves were divided into three groups and liver biopsies were taken during the winter. Group 1 consisted of 6 animals allowed to graze freely under natural conditions, those in groups 2 (n = 5) and 3 (n = 6) were kept in pens and fed with lichens, the diet being designed to achieve a slight (group 2) or moderate (group 3 ...
openaire   +2 more sources

Effect of the Season at the Birth on the Performance and Health of Calves

Sixth International Dairy Housing Conference Proceeding, 16-18 June 2007, (Minneapolis, Minnesota) (Electronic Only), 2007
Heat stress negatively affected production by hutch calves. Summertime heat adversely affects productivity by the decreased feed intake and daily gain. The objective of this paper was evaluate effects of high temperatures on the growth, feed consumption and health condition of calves kept in individual hutches in southern Slovakia (East Central Europe).
null Jan J. J Broucek, null Stefan Mihina, null Peter Kisac, null Michael Uhrincat, null Anton Hanus, null Miloslav Soch, null Jan Travnicek   +6 more
openaire   +1 more source

Induced termination of the calving season in a large dairy herd

New Zealand Veterinary Journal, 1979
Abstract The calving season of a 550-cow dairy herd was shortened by the induction of premature parturition in 231 cows and heifers, using the synthetic or natural prostaglandins cloprostenol or PGF2 alpha as the sole treatment, or these agents 8 and 12 days after dexamethasone trimethyl acetate (DTMA), depending on estimated prematurity at the time of
openaire   +3 more sources

Early season parasitic gastroenteritis in calves and its prevention with ivermectin

Veterinary Record, 1987
In a two-year trial involving successive batches of 36 autumn-born steers on two adjacent sites in Hertfordshire, calves treated with ivermectin at three and eight weeks after turn out contaminated pastures much less than untreated control animals. Each year dry summers prevented the larval challenge on the control pastures from building up to high ...
D E, Jacobs, M T, Fox, W G, Ryan
openaire   +2 more sources