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1. Beyond pastures, look at plastic: Using Sentinel-2 imagery to map silage bags to improve understanding of cattle intensity

Author:
Fernandez Pedro David; Gärtner Phillipp; Nasca José Andrés; Rojas Tobias; Gasparri Nestor Ignacio
Source:
Science of the total environment 2023 v.855 pp. 158390
ISSN:
0048-9697
Subject:
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 ...
DOI:
10.1016/j.scitotenv.2022.158390

2. Synchronization of follicle wave emergence before ovarian superstimulation with FSH and ovum pick-up improves in vitro embryo production in pregnant heifers

Author:
Cameron B. Hayden; Rodrigo V. Sala; Victor A. Absalón-Medina; Jessica C.L. Motta; Daniela Pereira; Juan F. Moreno; Alvaro García-Guerra
Source:
Theriogenology 2022 v.188 pp. 71-78
ISSN:
0093-691X
Subject:
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 ...
DOI:
10.1016/j.theriogenology.2022.05.017
CHORUS:
10.1016/j.theriogenology.2022.05.017

3. Standing Intraoral Extraction of the Right Mandibular Third Molar Tooth in a Cow Utilizing Tooth Sectioning

Author:
Fernando N. Amitrano; Kelly Shaw; Diego De Gasperi; Travis Henry; Sabrina H. Brounts
Source:
Journal of veterinary dentistry 2022 v.39 no.1 pp. 71-77
ISSN:
2470-4083
Subject:
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 ...
DOI:
10.1177/08987564211065129

4. Views of Western Canadian dairy producers on calf rearing: An interview-based study

Author:
Elizabeth R. Russell; Marina A.G. von Keyserlingk; Daniel M. Weary
Source:
Journal of dairy science 2022 v.105 no.2 pp. 1480-1492
ISSN:
0022-0302
Subject:
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 ...
DOI:
10.3168/jds.2021-21116

5. Impacts of Heifer Post-Weaning Intake Classification on Performance Measurements of Lactating and Non-Lactating Two-, Five-, and Eight-Year-Old Angus Beef Females

Author:
Krista R. Wellnitz; Cory T. Parsons; Julia M. Dafoe; Darrin L. Boss; Samuel A. Wyffels; Timothy DelCurto; Megan L. Van Emon
Source:
Animals 2022 v.12 no.13 pp. -
ISSN:
2076-2615
Subject:
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 ...
DOI:
10.3390/ani12131704

6. Are muscle fiber types different between normal and dark-cutting beef?

Author:
Bimol C. Roy; Shahid Mahmood; Heather L. Bruce
Source:
Canadian journal of animal science 2022 v.102 no.2 pp. 274-288
ISSN:
0008-3984
Subject:
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 ...
DOI:
10.1139/cjas-2021-0085

7. Using Pelvic Areas and Linear Body Measurements in the Selection for Reduced Dystocia Rates in Sussex Heifers

Author:
L. Bila; P.J. Fourie; T.L. Tyasi
Source:
Indian journal of animal research 2022 v.56 no.8 pp. 928-932
ISSN:
0976-0555
Subject:
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 ...
DOI:
10.18805/IJAR.B-1303

8. Influence of Heifer Post-Weaning Voluntary Feed Intake Classification on Lifetime Productivity in Black Angus Beef Females

Author:
Krista R. Wellnitz; Cory T. Parsons; Julia M. Dafoe; Darrin L. Boss; Samuel A. Wyffels; Timothy DelCurto; Megan L. Van Emon
Source:
Animals 2022 v.12 no.13 pp. -
ISSN:
2076-2615
Subject:
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 ...
DOI:
10.3390/ani12131687

9. Early Stepdown Weaning of Dairy Calves with Glutamine and Branched-Chain Amino Acid Supplementations

Author:
Janaka Wickramasinghe; Can Ayhan Kaya; Donald Beitz; Ranga Appuhamy
Source:
Animals 2022 v.12 no.12 pp. -
ISSN:
2076-2615
Subject:
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 ...
DOI:
10.3390/ani12121474

10. Estimation of Genetic Parameters for Heifer and Cow Fertility Traits Derived from On-Farm AI Service Records of South African Holstein Cattle

Author:
Ramadimetje Delight Kgari; Carel Muller; Kennedy Dzama; Mahlako Linah Makgahlela
Source:
Animals 2022 v.12 no.16 pp. -
ISSN:
2076-2615
Subject:
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 ...
DOI:
10.3390/ani12162023

11. The impact of milk suckling protocol and schedule on body weight and some morphometric measurements of Holstein heifers

Author:
Amr M. A. Rashad; Amani H. Amin; Ahmed E. Mahdy; Mahmoud A. Aziz; Adel S. A. El-Barbary; Dalia K. A. EL-Hedainy
Source:
Tropical animal health and production 2022 v.54 no.3 pp. 187
ISSN:
0049-4747
Subject:
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 ...
DOI:
10.1007/s11250-022-03182-y

12. A Practical Application of Genomic Predictions for Mastitis Resistance in Italian Holstein Heifers

Author:
Riccardo Moretti; Stefania Chessa; Stefano Sartore; Dominga Soglia; Daniele Giaccone; Francesca Tiziana Cannizzo; Paola Sacchi
Source:
Animals 2022 v.12 no.18 pp. -
ISSN:
2076-2615
Subject:
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 ...
DOI:
10.3390/ani12182370

13. Prevalence and predictors of bacteremia in dairy calves with diarrhea

Author:
Jessica Garcia; Jessica Pempek; Miranda Hengy; Austin Hinds; Dubraska Diaz-Campos; Gregory Habing
Source:
Journal of dairy science 2022 v.105 no.1 pp. 807-817
ISSN:
0022-0302
Subject:
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 ...
DOI:
10.3168/jds.2020-19819

14. Effects of Holstein and beef-dairy cross breed description on the sale price of feeder and weaned calf lots sold through video auctions

Author:
E.D. McCabe; M.E. King; K.E. Fike; K.G. Odde
Source:
Applied animal science 2022 v.38 no.1 pp. 70-78
ISSN:
2590-2865
Subject:
heifers,   etc   ; Brahman; Holstein; animal science; beef; calves; feeder cattle; prices; regression analysis; steers; supply chain;     Show all 11 Subjects
Abstract:
... 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 ...
DOI:
10.15232/aas.2021-02215

15. Comparative response of hay versus green fodder feeding and loose versus barn housing on labor utilization and economics of rearing in murrah buffalo heifers

Author:
A. K. Saini; Ram Singh; J.S Dall
Source:
Indian journal of animal nutrition 2022 v.39 no.2 pp. 140-147
ISSN:
2231-6744
Subject:
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: ...
DOI:
10.5958/2231-6744.2022.00018.4

16. Estimation and analysis of cow-level cumulative lifetime break-even on financial resiliency

Author:
A.P. Gambonini; J.C. Hadrich; A.R. Roberts
Source:
Journal of dairy science 2022 v.105 no.5 pp. 4653-4668
ISSN:
0022-0302
Subject:
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 ...
DOI:
10.3168/jds.2021-20644

17. Prevalence of failure of passive immunity transfer in Australian non‐replacement dairy calves

Author:
N Roadknight; E Jongman; P Mansell; N Courtman; D McGill; G Hepworth; A Fisher
Source:
Australian veterinary journal 2022 v.100 no.7 pp. 292-295
ISSN:
0005-0423
Subject:
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 ...
DOI:
10.1111/avj.13160

18. Live weight accounting for beef cow management

Author:
G. Fordyce; D.R. Smith; M.R. McGowan; K.D. McCosker
Source:
Livestock science 2022 v.262 pp. 104960
ISSN:
1871-1413
Subject:
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 ...
DOI:
10.1016/j.livsci.2022.104960

19. Prediction of Polish Holstein's economical index and calving interval using machine learning

Author:
J. Wełeszczuk; B. Kosińska-Selbi; P. Cholewińska
Source:
Livestock science 2022 v.264 pp. 105039
ISSN:
1871-1413
Subject:
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 ...
DOI:
10.1016/j.livsci.2022.105039

20. Temporal evaluation of follicular dynamics and endocrine patterns of Holstein (Bos taurus), Gir (Bos indicus), and Murrah (Bubalus bubalis) heifers kept under the same nutritional, management and environmental conditions

Author:
J.M. Baldrighi; M.F. Sá Filho; A.F. Siqueira; J.A. Visintin; P.S. Baruselli; M.E.O.A. Assumpção
Source:
Theriogenology 2022 v.190 pp. 8-14
ISSN:
0093-691X
Subject:
heifers,   etc   ; Bubalus bubalis; Holstein; blood; estrous cycle; follicular development; insulin; menstrual cycle; ovarian follicles; ovulation; progesterone; taurine; zebu;     Show all 13 Subjects
Abstract:
... 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 ...
DOI:
10.1016/j.theriogenology.2022.07.006