Genetic Evaluation of Monthly Test-Day Milk Yields of Jersey Crossbred Cattle Under Farmers’ Production System in Tamil Nadu, India

Autor: Dhanukodialagar Kasiviswanathan, Palaniappan Devendran, Ragothaman Venkataramanan, Subramanian Meenakshisundaram, Ganesamoorthy Senthilkumar, Sunday O. Peters

Publikováno v: Animals, Vol 14, Iss 21, p 3152 (2024)

Tamil Nadu, a state in southern India, is bereft of any native dairy or dual-purpose cattle breeds, and the state depends chiefly on crossbred cattle for milk production. Jersey crossbred cattle account for 90% of the state’s milk production. This

Externí odkaz: https://doaj.org/article/9e7d5e5ec1e84aeeb5033e4f48e5f08d

Estimation of the performance of two real-time polymerase chain reaction assays for detection of Staphylococcus aureus, Streptococcus agalactiae, and Streptococcus dysgalactiae in pooled milk samples in a field study

Autor: Anne Klassen, Katja Dittmar, Jana Schulz, Esra Einax, Karsten Donat

Publikováno v: Journal of Dairy Science, Vol 106, Iss 12, Pp 9228-9243 (2023)

ABSTRACT: The early detection of major mastitis pathogens is crucial for the udder health management of dairy herds. Testing of pooled milk samples, either individual test-day cow samples (TDCS) or aseptically collected pre-milk quarter samples (PMQS

Externí odkaz: https://doaj.org/article/8250cad1683343a8bae726f7244349e3

Prediction of metabolic status of dairy cows in early lactation using milk fatty acids and test-day variables

Autor: Muluken Girma, A.T.M. van Knegsel, S. Heirbaut, L. Vandaele, X.P. Jing, B. Stefańska, V. Fievez

Publikováno v: Journal of Dairy Science, Vol 106, Iss 6, Pp 4275-4290 (2023)

ABSTRACT: Early lactation metabolic imbalance is an important physiological change affecting the health, production, and reproduction of dairy cows. The aims of this study were (1) to evaluate the potential of test-day (TD) variables with or without

Externí odkaz: https://doaj.org/article/004898bb8c0b43d28996ec2c3c8dfb5d

Investigating lactation curve characteristics of dairy cows

Autor: O. S. Kramarenko

Publikováno v: Науковий вісник Львівського національного університету ветеринарної медицини та біотехнологій імені С.З. Гжицького. Серія: Сільськогосподарські науки, Vol 25, Iss 98, Pp 3-10 (2023)

The main goal of this study was to analysis of the main characteristics (latent variables) of lactation curve in dairy cows using multivariate Principal Component Analysis. This work used primary database from the milk production of Holstein cows (n

Externí odkaz: https://doaj.org/article/71d8436c6b244793972a40edbebb900b

Milking Temperament and Its Association with Test-Day Milk Yield in Bulgarian Murrah Buffaloes

Autor: Tihomira Stepancheva, Ivaylo Marinov, Zhivka Gergovska

Publikováno v: Animals, Vol 14, Iss 7, p 987 (2024)

The goal of this research was to evaluate milking temperament and its relationship with test-day milk (TDMY0) yield in Bulgarian Murrah buffaloes. This study involved 90 buffalo cows reared under a tie-stall production system which were milked twice

Externí odkaz: https://doaj.org/article/2036912fafb340b18ce6345e1f04c9b3