Aim: This study was conducted to find out the relationship of prepartum udder and teat measurements with subsequent milk production traits in primiparous Nili-Ravi buffaloes.
Materials And Methods: A total of 12 Nili-Ravi buffalo heifers were selected from Buffalo Farm, Central Institute for Research on Buffaloes, Regional Station- Bir Dosanjh, Nabha, Patiala, Punjab. The udder length (UL), udder width (UW), udder depth, teat length (TL), teat diameter (TD), and teat distances were measured at fortnightly interval from 60 days prepartum until calving. After calving, 60 days total milk yield (TDMY), peak yield (PY), and days taken to attain PY (DPY) were also recorded. The correlation coefficients of various prepartum udder and teat measurements since 60 days prepartum to calving with 60 days TDMY, PY, and DPY were calculated to find out the relationship between the traits in primiparous Nili-Ravi buffaloes.
Results: The result envisaged that all udder and teat measurements were increased gradually toward the date of calving in primiparous buffaloes. The UL, UW, left fore (LF) and right rear (RR)TL, RRTD, and the distance between LF to left rear (LR) teat were positively correlated with 60 days TDMY. The UL and UW depicted positive but nonsignificant correlation with PY. Fore TLs showed positive correlation where as TDs and teat distances had a negative correlation with the DPY in primiparous Nili-Ravi buffaloes.
Conclusion: It was concluded that milk production performance could be assessed on the basis of prepartum udder and teat measurements in primiparous Nili-Ravi buffaloes.
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http://dx.doi.org/10.14202/vetworld.2016.1173-1177 | DOI Listing |
Emerg Microbes Infect
December 2025
Department of Virology, Institute of Medical Science, University of Tokyo, Tokyo, Japan.
Since early 2024, highly pathogenic avian influenza H5N1 viruses have been causing outbreaks in dairy cattle in the United States. Here, we compared the replicative capacity of A/dairy cattle/Texas/24-008749-001/2024 (H5N1; Cow-H5N1) isolated from a dairy cow, A/chicken/Ghana/AVL-76321VIR7050-39/2021 (H5N1; Chicken-H5N1) isolated from a chicken, and a human H1N1 2009 pandemic virus in ex vivo explant cultures of mammary gland and teat from lactating cows. We also examined the expression of influenza virus receptors in these organs.
View Article and Find Full Text PDFAnimals (Basel)
December 2024
Department of Animal Science, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Kamýcká 129, 165 00 Prague, Czech Republic.
The study aimed to explore if milkability parameters could reliably predict the dimensions of teat structures and their milking-induced changes. Ultrasonography repeatedly measured the teat structures of 48 Holstein cows from mid to late lactation. We found that milking-induced changes in each structure are affected by different milkability parameters.
View Article and Find Full Text PDFBMC Genomics
December 2024
Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, Laboratory of Animal Fat Deposition & Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling, 712100, Shaanxi, China.
Background: Teat number is one of the most important indicators to evaluate the lactation performance of sows, and increasing the teat number has become an important method to improve the economic efficiency of farms. Therefore, it is particularly important to deeply analyze the genetic mechanism of teat number traits in pigs. In this study, we detected Single Nucleotide Ploymorphism (SNP), Insertion-Deletion (InDel) and Structural variant (SV) by high-coverage whole-genome resequencing data, and selected teat number at birth and functional teat number as two types of teat number traits for genome-wide association study (GWAS) to reveal candidate genes associated with pig teat number traits.
View Article and Find Full Text PDFObjective: The objectives were to describe a distal teat amputation and determine the long-term outcomes in dairy cows.
Methods: This retrospective study examined medical records of 22 lactating dairy cows admitted to the Farm Animal Hospital from 2015 to 2021 for distal teat and papillary canal injuries that received a distal teat amputation as the sole surgical treatment. Long-term follow-up was obtained from the Canadian Dairy Network (CDN) and milk producers to determine whether the cows remained in the herd and identify whether any factors affected this outcome.
JDS Commun
November 2024
Department of Large Animal Clinical Sciences, Michigan State University, East Lansing, MI 48824.
The objective of this observational study was to estimate partial direct costs of dry cow antibiotic therapy (DCT) protocols used on 37 large dairy herds in Wisconsin and to estimate the potential monetary savings and reduction in antimicrobial usage (AMU) if selective DCT was used. Partial direct costs of DCT were calculated using costs of intramammary (IMM) antimicrobials and teat sealants. Data were retrospectively collected on 37 large dairy farms for a period of 1 yr and included the total number of cows dried off, types of IMM antimicrobial used, and product prices (obtained from farm invoices).
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