Consulta: subjectFacets:"Heifer"
Registros recuperados: 6
Data/hora: 06/06/2024 01:12:57

周産期の未経産牛と新生子牛の甲状腺機能に対する硝酸塩の影響
Provedor de dados: 19
Autores: 平本, 典子; 大谷, 昌之; 田辺, 茂之; 宇塚, 雄次; 更科, 孝夫; HIRAMOTO, Noriko; OHTANI, Masayuki; TANABE, Shigeyuki; UZUKA, Yuji; SARASHINA, Takao.
Palavras-chave: 子牛; 未経産牛; 硝酸ナトリウム; T4; T3; Calf; Heifer; Sodium nitrate.
Ano: 2001
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/1249

牛をフィードステーションに誘導することによる排泄場所の制御
Provedor de dados: 19
Autores: 斉藤, 朋子; 瀬尾, 哲也; 柏村, 文郎; SAITOH, Tomoko; SEO, Tetsuya; KASHIWAMURA, Fumiro.
This study evaluated the possibility of decreasing defecation in a bedding area by inducing a heifer to visit a feeding station within a few minutes or immediately after standing. An experimental paddock (11.3 x 6 .8m) was made outdoors. Half of the paddock was roofed and bedded with straw to form a resting area.   A feeding station was situated in the remaining area of the paddock，which was designated as the feeding area. Six Holstein heifers，the test subjects，were grouped together in the paddock. A standing detection device was developed and attached to the heifer's left hind leg. The feeding station had an antenna that identified the heifer carrying the ID-tag when it entered the station. This experiment included control period and an experimental...
Palavras-chave: 牛; 排泄行動; フィードステーション; 学習; Heifer; Eliminative behavior; Feeding station; Learning.
Ano: 2005
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2996

DAIRY HEIFER MORBIDITY, MORTALITY, AND HEALTH MANAGEMENT FOCUSING ON PREWEANED HEIFERS
Provedor de dados: 31
Autores: Ott,   Stephen L.
The National Dairy Heifer Evaluation Project ( NDHEP ) was conducted by the National Animal Health Monitoring System (NAHMS ) from April 1991 through July 1992. A total of 921 producers monitored calves on a daily basis from the first through the eighth week of life; results were extrapolated to the U.S. dairy population. Mortality of heifer calves was examined according to region ( west, midwest, northeast, southeast ). Mortality was highest in the western region ( 9.1 percent ) and lowest in the midwestern region ( 5.6 percent ). Calf deaths were highest in the two quarters October-December and January-March ( 8.4 percent each quarter ) and lowest in the quarter April-June ( 5.2 percent ). The overall average of stillborn calves was 1.6 percent. Calving...
Tipo: Report
Palavras-chave: NAHMS; Dairy; Cattle; Monitoring; Epidemiology; Preweaning; Heifer; Production; Diseases; Morbidity; Mortality; Death; Illness; Respiratory; Reproduction; Digestive; Musculoskeletal; Nervous system; Mastitis; Maternity; Injections; Antibiotics; Milk replacer; Livestock Production/Industries.
Ano: 1993
URL: http://purl.umn.edu/32756

FEEDLOT '99, PART I: BASELINE REFERENCE OF FEEDLOT MANAGEMENT PRACTICES, 1999
Provedor de dados: 31
The National Animal Health Monitoring System (NAHMS) is sponsored by the USDA:APHIS: Veterinary Services (VS). The NAHMS Feedlot '99 Study included feedlots of 1000-head or greater capacity from the 12 leading cattle feeding states. Feedlots included in the study represented 84.9 percent of U.S. feedlots of this size and contained 96.1 percent of the U.S. feedlot cattle inventory on feedlots with 1000-head or greater capacity as of January 1, 2000. For the purposes of the study, operations were grouped into two size categories: those with capacities of between 1000 and 7999 head, and those with capacities of 8000 head or more. Beef animals were the main type of cattle placed in feedlots regardless of operation size. Approximately one-half of the placements...
Tipo: Report
Palavras-chave: NAHMS; Cattle; Cow; Calf; Beef cow-calf; Beef; Cow-calf; Feedlot; Steer; Heifer; Auction; Custom feeding; Feed; Lot; Management; Markets; Weaning; Disease; Region; Environment; Ionophore; Coccidiostat; Probiotic; Quality; Quality assurance; Nutrition; Livestock Production/Industries.
Ano: 2000
URL: http://purl.umn.edu/32768

DAIRY HERD MANAGEMENT PRACTICES FOCUSING ON PREWEANED HEIFERS
Provedor de dados: 31
Autores: Ott,   Stephen L.
The National Dairy Heifer Evaluation Project ( NDHEP ) was conducted by the National Animal Health Monitoring System (NAHMS ) from April 1991 through July 1992 with the assistance of 1,811 producers from 28 states. Producers included in the study each had herds of 30 or more milk cows, representing 78 percent of the milk cows in the U.S. The average total of cattle and calves on each operation was 169.4. The main breed on 94.9% of operations was Holstein. Slightly over 46 percent of operations stated reproductive problems as the cause of low milk production of cows culled from the herd. Newborn calves were separated from their mothers before nursing on 28.0 percent of operations and less than 12 hours after birth on 39.6 percent of operations. On 64.0...
Tipo: Report
Palavras-chave: NAHMS; Dairy; Cattle; Monitoring; Epidemiology; Preweaning; Heifer; Production; Morbidity; Mortality; Death loss; Illness; Colostrum; Calving; Dehorning; Vaccination; Scours; Antibiotics; Feed; Milk replacer; Livestock Production/Industries.
Ano: 1994
URL: http://purl.umn.edu/32754

Post-weaning feeding levels on feeding behavior, growth and development in Holstein dairy heifers
Provedor de dados: 65
Autores: Quintana,Emanuel De La; Mendoza,Alejandro; Cajarville,Cecilia; Bentancur,Oscar; Repetto,José Luis.
ABSTRACT: To study the effect of post-weaning feeding levels on the growth of dairy heifers, 40 animals with 77.7 ± 8.1 days of age and 77.5 ± 9.2kg of body weight were grouped in 10 pens, and each pen was randomly assigned to one of the following treatments for 120 days: feeding level to achieve a body weight gain of 600 (TMEDIUM) or 800 (THIGH) g/day based on a total mixed ration. After this period all heifers were managed as a single group for 150 days. Nutrient intake, behavior, body weight and other morphological measures were recorded in each animal. As a result of the experimental design THIGH heifers had a higher nutrient intake than TMEDIUM heifers, which was reflected in a higher daily weight gain, withers height, heart girth and hip width....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Heifer; Feeding level; Growth.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018000300651