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Featured researches published by Pera Herold.


Animal Production Science | 2011

Resource use, cattle performance and output patterns on different farm types in a mountainous province of northern Vietnam

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

Beef cattle keeping by smallholders in a mountainous province of northern Vietnam in relation to poverty status, community remoteness and ethnicity

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

Breeding and supply chain systems incorporating local pig breeds for small-scale pig producers in Northwest Vietnam

Pera Herold; Regina Roessler; Alfons Willam; H. Momm; A. Valle Zárate


Livestock Science | 2009

Modelling of a recording scheme for market-oriented smallholder pig producers in Northwest Vietnam

Regina Roessler; Pera Herold; Alfons Willam; Hans-Peter Piepho; Le Thi Thuy; A. Valle Zárate


Tropical Animal Health and Production | 2010

Genetic and economic evaluation of a basic breeding programme for Kenya Boran cattle.

T. O. Rewe; Pera Herold; Hans-Peter Piepho; A.K. Kahi; A. Valle Zárate


Agricultural Systems | 2010

Farm types for beef production and their economic success in a mountainous province of northern Vietnam

Le Thi Thanh Huyen; Pera Herold; A. Valle Zárate


Outlook on Agriculture | 2009

Breeding Indigenous Cattle Genetic Resources for Beef Production in Sub-Saharan Africa

To Rewe; Pera Herold; A.K. Kahi; A. Valle Zárate


Archives Animal Breeding | 2007

Growth, carcass and meat quality parameters of purebred and crossbred goat kids in extensive pasture

Pera Herold; Hinrich Snell; Ezzat S. Tawfik


Livestock Science | 2011

Trait improvement and monetary returns in alternative closed and open nucleus breeding programmes for Boran cattle reared in semi-arid tropics

T.O. Rewe; Pera Herold; A.K. Kahi; A. Valle Zárate


Archives Animal Breeding | 2012

Organisation of breeding under difficult framework conditions – the case of smallholder pig breeding in mountainous areas in Northwest Vietnam

Regina Roessler; Pera Herold; H. Momm; A. Valle Zárate

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A. Al Baqain

University of Hohenheim

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Le Thi Thuy

University of Hohenheim

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