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heifers, etc ; algorithms; atmospheric precipitation; corn silage; databases; environment; farms; forage; hunger; land cover; pastures; polyethylene; rangelands; remote sensing; steers; sustainable development; Show all 16 Subjects
Abstract:
... Cattle ranching has increased globally in the last decades, and although pasture expansion is well documented across different regions, there is little understanding of the intensity at which cattle operate in these areas. With freely available Sentinel-2 satellite imagery, we mapped for the first time polyethylene silage bags used for forage conservation in a year with the Random Forest algorithm ...
heifers, etc ; Holstein; blastocyst; oocytes; pregnancy; swine; ultrasonography; Show all 7 Subjects
Abstract:
... The objective of the present study was to evaluate effects of synchronization of timing of follicle wave emergence, before ovarian superstimulation and ovum pick-up (OPU), on ovarian response and embryo production in pregnant heifers. Pregnant (47–69 days of gestation) Holstein heifers (n = 64), 19.0 ± 0.3 months of age, were assigned in a completely randomized design to one of two groups: synchro ...
heifers, etc ; Holstein; cows; hospitals; therapeutics; veterinary dentistry; Show all 6 Subjects
Abstract:
... A 2-year-old Holstein heifer presented to a university teaching hospital with an apical tooth infection of the right mandibular third molar. A standing oral extraction technique was attempted for tooth removal; however, the molar could not be delivered intact. A tooth sectioning technique was performed, and the affected molar was successfully delivered. Three months postextraction, the heifer had ...
heifers, etc ; calves; equipment; qualitative analysis; Alberta; British Columbia; Manitoba; Show all 7 Subjects
Abstract:
... Calf rearing practices differ among farms, including feeding and weaning methods. These differences may relate to how dairy producers view these practices and evaluate their own success. The aim of this study was to investigate perspectives of dairy producers on calf rearing, focusing on calf weaning and how they characterized weaning success. We interviewed dairy producers from 16 farms in Wester ...
heifers, etc ; Angus; beef; body weight; milk; milk production; voluntary intake; Show all 7 Subjects
Abstract:
... Heifer post-weaning intake classification was utilized to evaluate subsequent intake and performance measurements of 2-, 5-, and 8-year-old lactating and non-lactating Angus females. For both studies, heifers were categorized based on voluntary feed intake (expressed as g/kg BW) as either low (<−0.50 SD from the mean), average (±0.50 SD from the mean), or high (>0.50 SD from the mean) within one y ...
heifers, etc ; beef; beef quality; longissimus muscle; muscle fibers; pH; steers; Canada; Show all 8 Subjects
Abstract:
... Muscle fiber (MF) characteristics of longissimus thoracis (LT) muscles from heifer (n = 11) and steer (n = 12) carcasses graded Canada AA (AA, normal, n = 4 per sex) or dark-cutting (Canada B4) were examined and related to beef quality. Atypical (AB4, pH < 5.9, n = 4 per sex) and typical (TB4, pH > 5.9, n = 3 and 4 for heifers and steers, respectively) dark-cutting carcasses were represented. Musc ...
heifers, etc ; animal research; beef industry; birth weight; calves; dystocia; males; probability; Show all 8 Subjects
Abstract:
... Dystocia in cattle is a global problem which causes many health issues and economical losses in the beef cattle industry. However, to the greatest of our knowledge, use of pelvic areas and linear body measurements in South African Sussex heifers has not yet been reported on literature. Hence, the aim of this study was to use pelvic areas and linear body measurements in the selection of replacement ...
heifers, etc ; Angus; age; beef; body condition; calves; conception; pregnancy; voluntary intake; yearlings; Show all 10 Subjects
Abstract:
... This study evaluated heifer post-weaning voluntary feed intake (g/kg BW) classification on performance and reproductive measures, as well as impacts on lifetime productivity of 519 commercial Angus beef females. Heifer post-weaning voluntary feed intake (g/kg BW) was calculated over 80 test days following weaning using GrowSafe units. Heifers were categorized based on voluntary feed intake (g/kg B ...
heifers, etc ; Holstein; digestive tract; glutamine; isoleucine; leptin; leucine; serotonin; valine; whole milk; Show all 10 Subjects
Abstract:
... The study objective was to examine the effects of supplementing Gln and BCAA on the SFI and ADG of weaning dairy calves. Holstein heifer calves (11 calves /treatment) at 35 d of age were assigned to: (1) no amino acids (CTL), (2) Gln (8.0 g/d) alone (GLN), or (3) Gln (8.0 g/d) and BCAA (GLNB; 17.0, 10.0, and 11.0 g/d leucine, isoleucine, and valine, respectively) supplementations in whole milk dur ...
heifers, etc ; Holstein; automation; conception; cows; dairy cattle; heritability; milk; multivariate analysis; pedigree; Show all 10 Subjects
Abstract:
... This study aimed to derive additional fertility traits from service data and estimate their genetic parameters for their possible inclusion in the South African Holstein cattle breeding programs. Service records (n = 64,464) were collected from 18 South African Holstein herds using on-farm automated milk recording systems. Using a multivariate model, the data were used to estimate heritabilities a ...
heifers, etc ; Holstein; animal health; body length; body weight; calves; chest; milk; morphometry; rump; Show all 10 Subjects
Abstract:
... Having a successful heifer raising operation is not only relevant financially, but also influential for the future of the dairy herds. Milk feeding has a significant role on the health and growth of calves before weaning, in addition to the direct progressive effects on future performance post-weaning. Therefore, the aim of this study was to compare the effects of constants amount of milk (CMS) ve ...
heifers, etc ; Holstein; farm management; farms; genomics; marker-assisted selection; mastitis; sires; somatic cell count; Show all 9 Subjects
Abstract:
... Heifers are a fundamental resource on farms, and their importance is reflected in both farm management and economy. Therefore, the selection of heifers to be reared on a farm should be carefully performed to select only the best animals. Genomic selection is available nowadays to evaluate animals in a fast and economic way. However, it is mainly used on the sire line and on performance traits. Ten ...
heifers, etc ; bacteremia; confidence interval; diarrhea; drug therapy; eyes; fever; gastrointestinal diseases; mass spectrometry; mortality; Show all 10 Subjects
Abstract:
... Gastrointestinal disease is the most common cause of mortality in dairy calves. Septicemia is an important sequela of diarrhea, and the possibility of bacteremia is the primary justification for empirical antimicrobial therapy. Prior reports estimate that approximately one-third of diarrheic calves are bacteremic; however, those estimates may not be representative of routine cases in heifer calves ...
... Our objective was to determine 1) the value of Holstein feeder steer lots compared with steer lots of other breed descriptions, 2) the value of beef-dairy cross weaned steer calves compared with either Holstein weaned calves or weaned calves of other breed descriptions, and 3) the value of beef-dairy cross weaned steers and heifers compared with weaned steers and heifers of other beef breed descri ...
heifers, etc ; Trifolium alexandrinum; animal nutrition; barns; body weight changes; buffaloes; feed prices; forage; hay; labor; Show all 10 Subjects
Abstract:
... The study was undertaken to investigate the effect of hay versus green fodder and loose versus barn house on labor utilization and economics of rearing of buffalo heifers. Twenty heifers based on similar body weight (BW) and age were divided into four treatments; T1: conventional barn housing+ berseem hay and concentrate mixture (CM); T2: conventional barn housing+ berseem green fodder and CM; T3: ...
heifers, etc ; cows; dairy farming; databases; farms; finance; herds; milk prices; models; net farm income; profitability; Minnesota; Show all 12 Subjects
Abstract:
... A dairy farm's ability to generate positive profit is dependent on the cow's response to management decisions made in conjunction with input cost management. Therefore, farm managers consider a multifaceted set of choices, managing their herd not as a homogeneous group of animals, but justifying the influence of individual cows on the farm's financial performance. We combined cow-level performance ...
heifers, etc ; Holstein; Jersey; blood; blood proteins; data collection; morbidity; mortality; passive immunity; profitability; risk; statistical models; viability; Show all 13 Subjects
Abstract:
... Failure of passive immunity transfer (FPIT) increases the risk of morbidity and mortality in dairy calves. The prevalence of FPIT in dairy calves has generally been reported to be high, with FPIT estimated to occur in 38%–42% of Australian dairy calves. However, the focus of previous studies has been on replacement heifer calves. Our aim was to assess the prevalence of FPIT in Victorian bobby calv ...
heifers, etc ; beef; beef cows; body weight; calves; cattle husbandry; climatic factors; income; pastures; pregnancy; steers; weanlings; yearlings; Show all 13 Subjects
Abstract:
... Calculation and use of annual live weight production of a group of beef cattle, ie, net harvest of live weight from their grazing area over a year, which is a primary beef cattle business measure directly indicating income, is limited in practice because it is not well understood and there is generally insufficient record keeping to achieve it. This concept paper introduces live weight production ...
heifers, etc ; Holstein; computer software; cows; dairy cattle; data collection; decision support systems; models; prediction; regression analysis; selenium; Show all 11 Subjects
Abstract:
... Models built using machine learning algorithms (MLA) have been used to handle numerous challenges in various farming systems. In this study we wanted to propose an alternative approach of predicting the economical index (EI) and calving interval (CI). The original dataset was generated by Center of Genetics and it was collected by using customised python script with implemented Beautifulsoup modul ...
... The objective of the study was to simultaneously compare ovarian follicular dynamics and endocrine parameters of taurine (Holstein; n = 14), zebuine (Gir; n = 5), and bubaline (Murrah; n = 15) heifers kept under the same environmental, nutritional and management conditions. Heifers were synchronized with two PGF treatments 14 days apart. Ovaries of cyclic heifers were scanned daily during two cons ...