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      Preferential traits for breeding Nguni cattle in low-input in-situ conservation production systems

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          Abstract

          A cross-sectional study was conducted in communal and small-scale Nguni cattle enterprises to determine preferential traits for improvement under low-input cattle breeding programs. Forty-one farmers participated in ranking six specific traits of breeding bulls and cows. Kruskal-Wallis test and ordinal logistic regression were used to determine mean ranks of traits and odds ratios of predictors (enterprise ownership, gender, farmer age, education level, agriculture training) on specified trait ranks, respectively. Preferential traits for breeding bulls were in the order; aggression and mating behaviour (1.86), tick and disease resistance (1.90), body condition score (2.69), scrotal circumference (4.52), body size and conformation (4.71) and coat colour (5.02). For breeding cows,preferential order were; tick and disease resistance (1.55), reproductive efficiency (2.02), body condition score (3.14), body size and conformation (4.21), coat colour (4.74) and milk yield (5.31). Less old farmers (< 50 years) and those from communal enterprises preferred bull coat colour more than scrotal circumference. Farmers with primary education and those with formal agriculture training had the least odds ratio estimates on the poorly ranked bull coat colour. The informally trained farmers, older age group (> 50 years), females and those from small-scale enterprises had odds ratio estimates less than one for the sixth ranked milk yield in Nguni cows. It was concluded that trait preference in breeding bulls and cows is significantly influenced by socio-economic and demographic factors. It is recommended to consider farmer preferences in trait selection and designing communal breeding programs.

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          Sustainable tick and tickborne disease control in livestock improvement in developing countries.

          Tick and tickborne disease (TTBD) control is a major component of animal health programmes protecting livestock, thereby enhancing global food security. The present methods for TTBD control are reviewed and an integrated use of the tools is recommended with a broader view of how to link TTBD control to the control of other parasitic diseases. The work of FAO in this field is presented and it is advocated that, although there are still areas that need further investigation, a stage has been reached where robust integrated TTBD control schemes, based on ecological and epidemiological knowledge of ticks and their associated diseases, can be promoted and implemented. Major challenges are the implementation of these policies in the field through the continuation of the present on-going programme in Africa and support to Latin America and Asia. The importance of involving all parties, governments, international and private organisations and the agrochemical industry in developing sustainable, cost-efficient control programmes is stressed and a global strategy is proposed. The main thrust should now be to convince policy makers on the adoption of the strategies and veterinarians and farmers on their implementation.
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            Measuring Heterogeneous Preferences for Cattle Traits among Cattle-Keeping Households in East Africa

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              Meat quality of Nguni, Bonsmara and Aberdeen Angus steers raised on natural pasture in the Eastern Cape, South Africa.

              The current study compared meat quality of Nguni, Bonsmara and Angus steers raised on natural pasture. Fifteen seven-month-old weaners of each breed were kept at the University of Fort Hare Farm for 12 months till slaughter. Monthly weights of the steers were recorded. Carcasses were electrically stimulated. The m. longissimus thoracis et lumborum was sampled for the measurement of meat colour, pH, drip loss, sarcomere length, myofibrillar fragmentation length and Warner Bratzler (WB) shear force. The Nguni had the highest (P<0.05) average daily gain. Bonsmara and Angus steers had higher (P<0.05) carcass weight and dressing percentage than the Nguni steers. Meat quality characteristics were similar among all the breeds except that Nguni meat was darker (L(∗)) (P<0.05) than meat from the other two breeds. The respective L(∗) values for Nguni, Bonsmara and Angus steers were 36.5, 38.6 and 39.9. There were significant (P<0.05) correlations among some meat quality traits. There were significant (P<0.05) correlations between WB values of meat aged for 2 and 21 days in Nguni and Bonsmara, but not in Angus. Meat quality from Nguni compares favourably with that from established breeds, when raised on natural pasture.
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                Author and article information

                Contributors
                umbroenter@gmail.com
                vmuchenje@hotmail.com
                kdzama@sun.ac.za
                Journal
                Springerplus
                Springerplus
                SpringerPlus
                Springer International Publishing AG (Cham )
                2193-1801
                30 April 2013
                30 April 2013
                2013
                : 2
                : 195
                Affiliations
                [ ]Department of Livestock and Pasture Science, University of Fort Hare, P. Bag X1314, Alice, 5700 South Africa
                [ ]Department of Animal Sciences, Stellenbosch University, P. Bag X1, Matieland, 7602 South Africa
                Article
                263
                10.1186/2193-1801-2-195
                3657091
                23705106
                f64800ab-23ad-48ad-8f3f-3971c5bdd42a
                © Tada et al.; licensee Springer. 2013

                This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License ( http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

                History
                : 19 January 2013
                : 12 April 2013
                Categories
                Research
                Custom metadata
                © The Author(s) 2013

                Uncategorized
                bull traits,cow traits,enterprise ownership,farmer,mean rank,odds ratio
                Uncategorized
                bull traits, cow traits, enterprise ownership, farmer, mean rank, odds ratio

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