Pera Herold
University of Hohenheim
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Featured researches published by Pera Herold.
Animal Production Science | 2011
Le Thi Thanh Huyen; Pera Herold; André Markemann; Anne Valle Zárate
This study compares the use of resources, cattle performance and outputs on three different cattle-keeping farm types (mixed small farms, mixed medium farms with a collective use of natural pastures, and specialised large farms). The purpose was to evaluate the potential for beef production on household farms, where cattle keeping is integrated with cropping, compared with specialised large beef cattle farms. Data were collected by using farmer interviews, participatory rural appraisal tools and cattle body measurements, and analysed by linear models using SAS software. Household farms raised cattle at very low input levels. Medium farms had lower costs for cattle keeping than small farms in the lowlands (0.11 Vietnamese Dong × 106/farm.year compared with 1.20 Vietnamese Dong × 106/farm.year). High inputs were observed on all large farms. Only the local Yellow cattle was found in the highlands. Yellow cattle was less fertile in the highlands than in the lowlands (age at first calving of 3.2 years and calving interval of 16.3 months compared with 2.8 years and 12.6 months, respectively). Performances of exotic breeds varied according to feeding and breeding management of large farms. Crossbred Laisind cattle had a better productive adaptability than exotic beef breeds. Cattle were used mainly for working and manure by small farms. The stock value was highest on medium farms. Low outputs on large farms were a result of high feed costs, inappropriate management and the failure of markets. Results from simulations identify the medium mixed farms with access to natural pasture showing a potential for the development of beef production, provided that access to markets and cattle management is improved.
Animal Production Science | 2013
Le Thi Thanh Huyen; Dinh Thi Tuyet Van; André Markemann; Pera Herold; Anne Valle Zárate
Vietnam’s national beef demand is continuously increasing, but is not able to be satisfied by domestic supply. Because land scarcity is a major constraint to beef production in many parts of the country, attempts to enhance beef production in Vietnam have focussed on small-scale household farms in remoter areas. The present study aimed to investigate the relation between cattle keeping and poverty status of household farms in Son La province, north-west Vietnam. In addition, altitude, community remoteness and technology adoption of the investigated households were considered for an evaluation of the feasibility of smallholder beef cattle production in the upland areas. Data on livestock production of 299 randomly selected households of different ethnic groups in the lowlands and highlands of Yen Chau district, Son La province, were collected by using structured and standardised questionnaires. The poverty status of the households was defined on basis of daily per-capita expenditures, dividing the investigated households into poor and non-poor farmers with daily per-capita expenditures below and above the rural poverty line, respectively. Cattle keeping farms in Yen Chau district showed advantages in terms of available land and labour resources compared with non-cattle keeping farms. Cattle were kept mainly by non-poor farmers, particularly the Thai, whose farm holdings are most commonly located in the lowlands. The number of cattle raised on farm was related to the poverty status of the households and remoteness. Cattle compete with other livestock in the use of limited farm resources. Cattle keeping farms more frequently applied feeding innovations to reduce feed competition on farm than the non-cattle keeping households. For the very poor, small animals are more appropriate than beef cattle production activities. Only in the identified advantageous regions, smallholder farmers might engage in beef production, if appropriate policies are implemented to support them in raising cattle. Consequently, the development of beef production under those conditions could contribute to poverty reduction by increasing smallholder’s incomes in the remote highland regions.
Livestock Science | 2010
Pera Herold; Regina Roessler; Alfons Willam; H. Momm; A. Valle Zárate
Livestock Science | 2009
Regina Roessler; Pera Herold; Alfons Willam; Hans-Peter Piepho; Le Thi Thuy; A. Valle Zárate
Tropical Animal Health and Production | 2010
T. O. Rewe; Pera Herold; Hans-Peter Piepho; A.K. Kahi; A. Valle Zárate
Agricultural Systems | 2010
Le Thi Thanh Huyen; Pera Herold; A. Valle Zárate
Outlook on Agriculture | 2009
To Rewe; Pera Herold; A.K. Kahi; A. Valle Zárate
Archives Animal Breeding | 2007
Pera Herold; Hinrich Snell; Ezzat S. Tawfik
Livestock Science | 2011
T.O. Rewe; Pera Herold; A.K. Kahi; A. Valle Zárate
Archives Animal Breeding | 2012
Regina Roessler; Pera Herold; H. Momm; A. Valle Zárate