Rugoho, I Edwards, G R
Published in
Journal of dairy science
The objective of this study was to examine the effect of wintering pregnant, nonlactating dairy cows outdoors on either kale or grass, fed in 1 [11 kg of dry matter (DM) of kale or grass + 3 kg of DM of baled barley straw offered in the morning] or 2 allocations (5.5 kg of DM of kale or grass grazed + 1.5 kg of DM barley straw offered morning and a...
Dennis, T S Suarez-Mena, F X Hill, T M Quigley, J D Schlotterbeck, R L Lascano, G J
Published in
Journal of dairy science
Using soluble fiber sources in starter and grower feeds for dairy calves less than 4 mo of age is common to reduce costs compared with including traditional cereal grains. Beet pulp (BP) contains relatively high concentrations of pectin compared with other fibrous feed ingredients and has been shown to be an acceptable replacement for corn in adult...
Abdelfattah, E M Karousa, M M Lay, D C Jr Marchant-Forde, J N Eicher, S D
Published in
Journal of dairy science
To determine the effect of age at grouping on behavior, health, and production of dairy bull calves, 90 Holstein-Friesian bull calves were housed in individual pens until moved to 1 of 3 treatments. Calves were housed in groups of 3 calves at 3 d old (GH3), 7 d old (GH7), or 14 d old (GH14) until 7 wk of age. Ten groups of 3 calves for each treatme...
Schäff, C T Gruse, J Maciej, J Pfuhl, R Zitnan, R Rajsky, M Hammon, H M
Published in
Journal of dairy science
The development of the gastrointestinal tract in newborn calves is essential for sufficient nutrient uptake. An intensive milk feeding during the neonatal period may impair the rumen development in calves. The aim of this study was to investigate effects of milk replacer (MR) feeding in unlimited amounts for the first 5 wk of age on the gastrointes...
Kaufman, E I Asselstine, V H LeBlanc, S J Duffield, T F DeVries, T J
Published in
Journal of dairy science
The objective of this study was to determine the associations of rumination time (RT) and health status with milk yield and milk composition. This study used 339 dairy cows from 4 commercial dairy farms in Ontario, Canada (first lactation, n = 107; second lactation, n = 112; ≥third lactation, n = 120). Rumination time was monitored (24 h/d) using a...
Niu, Wenjing He, Yang Wang, Haibo Xia, Chuanqi Shi, Haitao Cao, Binghai Su, Huawei
Published in
Journal of dairy science
This study investigated the replacement of Leymus chinensis (LC) with whole-crop wheat hay (WCWH) in the diets of Holstein bulls in the fattening stage and examined the potential effects on blood parameters, fatty acids in rumen fluid and serum, and the rumen microbiomes. In this study, 12 Holstein bulls in the fattening period (body weight = 485.0...
Zhang, Dexian Zhang, Zehui Huang, Chengcheng Gao, Xiang Wang, Zhuang Liu, Yaochuan Tian, Chunlian Hong, Wei Niu, Shengli Liu, Mingchun
...
Published in
Journal of dairy science
Bovine mastitis is still a central problem on dairy farms despite control programs, and Escherichia coli is a crucial pathogen during the development of bovine mastitis. The virulence genes, antimicrobial susceptibility, and mortality of mice infected with different E. coli isolates from bovine mastitis were determined in this study. According to t...
Hazelton, M S Sheehy, P A Bosward, K L Parker, A M Morton, J M Dwyer, C J Niven, P G House, J K
Published in
Journal of dairy science
Mycoplasma bovis can have significant consequences when introduced into immunologically naïve dairy herds. Subclinically infected carrier animals are the most common way that M. bovis is introduced into herds. Although M. bovis udder infections can be detected by milk sampling lactating animals before their introduction, currently, no definitive wa...
Dalanezi, Felipe Morales Souza da Paz, Giselle Joaquim, Sâmea Fernandes Guimarães, Felipe Freitas Bosco, Sandra de Moraes Gimenes Langoni, Helio
Published in
Journal of dairy science
An acute case of clinical mastitis in a Holstein cow from second lactation is reported here. A milk sample from the affected quarter was cultured on 5% bovine blood agar and incubated at 37°C for 72 h. After 24 h of incubation, numerous colonies of yeast were observed: the Candida characteristic was not detected by CHROMagar Candida (Difco, Frankli...
Flores-Flores, Myra Evelyn González-Peñas, Elena
Published in
Journal of dairy science
We surveyed the presence of 22 mycotoxins in 191 Spanish cow milk samples. Mycotoxins could be carried over from diet into animal milk and have toxic effects on human and animal health. The interaction of different mycotoxins may be additive or synergetic. Therefore, surveillance of mycotoxin co-occurrence in milk is recommended. Aflatoxins M1, B1,...
