Herds and Cows
Reproductive Traits in Culled Native Cows from Three Herds in Huambo Province, Angola
... The ideal BC for selling and adequate carcass quality is within the mid scoring. However, in Africa, the BC of sacrifice cows is low (Shittu et al., 2014), with a similar trend in the cattle studied, which is ...
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Hock lesions in dairy cows in freestall herds: a cross-sectional study of prevalence and risk factors
... 3217 cows from 99 herds were included in the statistical ...among herds, between 23 and 100% for mild HL, and between 0 and 32% for severe ...cleaner cows were associated only with increased ...
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Mastitis pathogens and their resistance against antimicrobial agents in herds of dairy cows situated in marginal parts of Slovakia
... Marginal regions are relatively large part of the area Slovakia which in terms of the economy breeding ruminants can efficiently produce animal commodities only occasionally. Geographic, social and economic stability of ...
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Resistance to penicillin of Staphylococcus aureus isolates from cows with high somatic cell counts in organic and conventional dairy herds in Denmark
... Conclusion No difference in prevalence of penicillin resistant SA or in the proportion of SA resistant to penicillin was found between conventional and old organic herds or before and after converting to organic ...
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Organic dairy cows: milk yield and lactation characteristics in thirteen established herds and development of a herd simulation model for organic milk production
... organic cows as milk yields increased the differences were not ...survey herds are not high enough to cause primary drop in ...of cows calving in different months and in the herd bias caused by ...
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Neospora caninum and bovine viral diarrhoea virus infections in dairy cattle : investigation of seroprevalences in imported and local crossbreed cows in dairy herds from southern Vietnam
... dairy cows in South ...dairy cows from state herds and smallholder farms, and if there were differences in seroprevalences between imported Holstein Friesian cows and local ...
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Evaluation of Reproduction Traits in Selected Breeding Herds of Slovak Simmental Dairy Cows by Breeding Type
... DFS, R 2 = 0.374924 % for DO, R 2 = 0.363125 % for NIC and R 2 = 0.324466 % for CI. These effects were significant (P<.0001). Table 5. Linear models for all factors on reproduction traits by breeding type in Slovak ...
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Serodiagnosis of Neosporosis in Individual Cows and Dairy Herds: A Comparative Study of Three Enzyme-Linked Immunosorbent Assays
... W. WOUDA, 1 * J. BRINKHOF, 2 C. VAN MAANEN, 2 A. L. W. DE GEE, 1 AND A. R. MOEN 1 Animal Health Service, 9200 AJ Drachten, 1 and 7400 AA Deventer, 2 The Netherlands Received 11 March 1998/Returned for modification 12 May ...
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Genome-wide associations for feed utilisation complex in primiparous Holstein–Friesian dairy cows from experimental research herds in four European countries
... Holstein–Friesian cows from experimental farms in Ireland, the United Kingdom, the Netherlands and Sweden to identify genomic regions associated with the feed utilisation complex: fat and protein corrected milk ...
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Genome-wide associations for fertility traits in Holstein–Friesian dairy cows using data from experimental research herds in four European countries
... Holstein–Friesian cows from experimental farms in Ireland, the United Kingdom, the Netherlands and Sweden to identify genomic regions associated with traditional measures of fertility, as well as a fertility ...
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Are My Dry Cows Heat-Stressed? A Novel Approach to Assess Heat Stress of Dry Cows in Commercial Dairy Herds
... dairy cows, during the 1960s researchers developed the temperature-humidity index (THI), which has been revised several times in the past decades to account for increased milk production of modern dairy ...dairy ...
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Association of season and herd size with somatic cell count for cows in Irish,English, and Welsh dairy herds
... of lactation and TDY were removed, the underlying values of cow SCC were highest, and most variable from February to August, de- spite BMSCC being at its lowest at this time in Irish herds. Despite the limited ...
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Genetic association between cows stayability to three years of age and juvenile growth traits in Canadian Angus herds
... of cows surviving to 3 yr of age having calved twice across year of birth, expressed as a ratio of all cows surviving to 2 yr having calved once, for herds A to E were ...across herds. The ...
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Characterization of new technological and nutritional properties of milk from cows of 6 breeds reared in multi-breed herds
... of cows and herd characteristics are the most important factors affecting milk productivity and efficiency, to obtain independent evaluation of these factors, the data (body size and production) and milk samples ...
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Fertility of fresh and frozen sex-sorted semen in dairy cows and heifers in seasonal-calving pasture-based herds
... A total of 110 AI technicians were involved in the study and were provided with guidelines on optimal handling techniques for both fresh and frozen SS. In- seminations were performed during a 34-d period from April 15 to ...
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Association between somatic cell count during the first lactation and the cumulative milk yield of cows in Irish dairy herds
... Reduced potential milk yield is an important com- ponent of mastitis costs in dairy cows. The first aim of this study was to assess associations between somatic cell count (SCC) during the first lactation, and ...
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Association between somatic cell count during the first lactation and the cumulative milk yield of cows in Irish dairy herds
... ABSTRACT Reduced potential milk yield is an important com- ponent of mastitis costs in dairy cows. The first aim of this study was to assess associations between somatic cell count (SCC) during the first ...
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Effect of Age at First Calving on First Lactation Milk Yield in Holstein Cows from Costa Rican Specialized Dairy Herds
... The selection of animals for first service, based on the age, is an effective strategy for dairy producers to im- prove the economic performance of their herds, because this can affect positively or negatively the ...
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Cubicle Refusal in Norwegian Dairy Herds
... the cows to express a broader pattern of behaviour, have led to its more general ac- ceptance and have contributed to many cubicle sheds being also erected in countries in which herds are generally of ...
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Methane Mitigation Strategies for Dairy Herds
... DAIRY HERDS Herd structure will impact both total methane emissions and the opportunity to adjust practices to decrease methane ...milk cows, number of dry cows and the number of replacement heifers ...
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