Results 81 to 90 of about 790,948 (240)

ECONOMICS OF BEEF COW CULLING AND REPLACEMENT DECISIONS UNDER GENETIC PROGRESS [PDF]

Beef cow managers annually face the question of which animals to cull from the herd and replace. The results of this decision affect not only current revenues, but, by altering the genetic composition of the herd, also affect the future profitability of ...
Melton, Bryan E.
core   +1 more source

Nitrogen efficiency of dairy cattle : from protein evaluation to ammonia emission [PDF]

, 2011
Diet optimization contributes considerably to increased nitrogen efficiency of dairy cattle, resulting in reduced nitrogen losses. This thesis focuses on three themes: the potential advances in protein evaluation systems for ruminants, the relationship ...
Duinkerken, G., van
core  

Establishment of goat mammary organoid cultures modeling the mammary gland development and lactation

Journal of Animal Science and Biotechnology
Background Although several cell culture systems have been developed to investigate the function of the mammary gland in dairy livestock, they have potential limitations, such as the loss of alveolar structure or genetic and phenotypic differences from ...
Lei Jia, Wenying Zhang, Tao Luo, Yongtao Li, Jianhong Shu, Julie Strand, Yuan Yue, Stig Purup, Jianxin Liu, Hengbo Shi   +9 more
doaj   +1 more source

An Economic Performance Analysis of the Beef Cow-herd Enterprise Using a Stochastic Frontier Function [PDF]

Standardized Performance Analysis (SPA) data from Texas, Oklahoma, and New Mexico were used to examine the economic performance of beef cow herd operations in the Southern Plains region by measuring their technical efficiency index.
Bevers, Stanley J., Cho, Jaesung, Park, Seong Cheol   +2 more
core   +1 more source

Performance and feed intake of five beef suckler cow genotypes and pre-weaning growth of their progeny [PDF]

, 2008
peer-reviewedThe effect of beef suckler cow genotype on feed intake, performance, milk yield and on pre-weaning growth of their progeny was determined over four lactations.
Drennan, Michael J, McGee, Mark, Murphy, B.M., O'Mara, Frank P.   +3 more
core  

Diagnostic accuracy of enzyme-linked immunosorbent assay (ELISA) and immunoblot (IB) for the detection of antibodies againstNeospora caninumin milk from dairy cows [PDF]

, 2017
Ioanna P. Chatziprodromidou, Thomas Apostolou   +1 more
openalex   +1 more source

Cow Placenta Extract Ameliorates Cyclophosphamide-Induced Intestinal Damage by Enhancing the Intestinal Barrier, Improving Immune Function, and Restoring Intestinal Microbiota

Veterinary Sciences
Immunosuppression undermines intestinal barrier integrity. Cow placenta extract (CPE) primarily consists of active peptides with immunomodulatory and antioxidant effects.
Yuquan Zhao, Zeru Zhang, Anguo Tang, Zhi Zeng, Weijian Zheng, Yuxin Luo, Yixin Huang, Xinyi Dai, Wei Lu, Lei Fan, Liuhong Shen   +10 more
doaj   +1 more source

Housing: sacred cow? [PDF]

Housing
Randall Pozdena, William Burke
core  

Environmental sampling to assess the bioburden of Mycobacterium avium subspecies paratuberculosis in drylot pens on California dairies. [PDF]

, 2019
Mycobacterium avium subspecies paratuberculosis (MAP) is a bacterium that can cause substantial economic losses in infected dairy herds due to reduced milk production and increased cow-replacement costs.
Adaska, John M, Aly, Sharif S, Anderson, Randall J, Chamchoy, Tapakorn, Williams, Deneice R   +4 more
core  

Proteomics analysis reveals the mechanism of anemoside B4 in treating clinical mastitis in dairy cows

Italian Journal of Animal Science
(1) Background: The therapeutic efficacy of AB4 in cows with CM is well-established, but the specific mechanism remains to be explored. This study was based on Label free relative quantitative proteomics technology to reveal the internal mechanism of AB4
Zeru Zhang, Yuquan Zhao, Zhetong Su, Ke Dong, Zhicai Zuo, Yixin Huang, Shumin Yu, Suizhong Cao, Liuhong Shen   +8 more
doaj   +1 more source