MONDAY, 11 July 2011
16:00 / 18:00 / Registration and tea on arrival (Registration Station, Kweekskool passage)
Handing in of posters (Poster Station, Kweekskool passage)
18:00 / 22:00 / MEET AND GREET (Japie Krige Hall, Paul Roos Gymnasium)
TUESDAY, 12 July 2011
08:00 / 10:00 / Registration and tea on arrival (Registration Station, Kweekskool passage)
Handing in of posters (Poster Station, Kweekskool passage)
OPENING SESSION (Attie van Wijk Hall- Kweekskool Auditorium)
10:00 / 10:10 / Welcoming (Dr E Pieterse)
10:10 / 10:25 / Scripture reading and prayer (Ds Liena Hoffman)
10:25 / 10:40 / Formal welcoming (Prof. Eddie Webb)
10:40 / 11:10 / Formal opening (Dr Gideon Bruckner)
11:10 / 11:40 / Speech by Honorary President (Prof. LR Ndlovu )
11:30 / 12:10 / Housekeeping and general information
12:10 / 13:15 / LUNCH (Kweekskool passage and Break-away area)
Concurrent sessions
Theme & chairperson / Ruminant nutrition for efficient production
(Murray Hall, Room 2002) – Dr Robin Meeske / Monogastric nutrition for efficient production
(Hofmeyr Hall, Room 2003) – Ms Lindie Liebenberg / Reproductive efficiency of livestock in commercial systems
(MDIV, Room 1006) – Dr Helet Lambrechts
Pages / 4 - 7 / 7 – 9 / 9 - 12
13:15 / 13:30 / In vitro fermentation using fecal fluids of the horse, wildebeest and zebra
. / FN Fabian & IV Nsahlai / Evaluation of larvae meal of Musca domestica as alternative to fishmeal in poultry production. / E Pieterse & Q Pretorius / Reproduction traits in Holsteincowsindicatingcow fertility. / CJC Muller, JP Potgieter, OT Zishiri & SWP Cloete
13:30 / 13:45 /
Specialised creep feeding of lambs for optimized performance.
/ WFJ van de Vyver, M le Roux & LC Hoffman / An evaluation of conventional and high oleic sunflower oil in poultry diets. / FH de Witt, A Hugo, EJ King, SP Els, HJ van der Merwe & MD Fair / Economic impact of including live weight in the breeding objective for South African Holstein cattle. / NI RamatsomaCB Banga13:45 / 14:00 / Specialised finisher diets for optimized feedlot lamb performance. / WFJ van de Vyver, JJ Moolman & LC Hoffman / Nutrient composition of larvae meal of Musca domesticaand the influence of various inclusion levels on broiler growth performance. / E Pieterse & Q Pretorius / Reproduction management efficiency indicators in dairy herds. / CJC Muller & JP Potgieter
14:00 / 14:15 /
Production response of lambs receiving creep feed while grazing two different pastures.
/ S Terblanche, TS Brand, JW Jordaan& JC van der Walt / Dietary garlic powder fed to laying hens and low temperature maintained the physical quality of stored eggs. / RYOlobatoke & SD Mulugeta / Preliminary results on the production performance of dairy cows as affected by crossbreeding using Fleckvieh sires. / CJC Muller, JA Botha & JP Potgieter14:15 / 14:30 /
Dietary NSC levels and its effect on rumen development.
/ WFJ van de Vyver, M le Roux & LC Hoffman / Predicting ostrich (Struthiocamelus) growth and development. / WJ Kritzinger, TS Brand, LC Hoffman & F Mellett / Beef production in dairy herds as affected by crossbreeding using Fleckvieh sires. / CJC Muller, JA Botha, OT Zishiri & JP Potgieter14:30 / 14:45 / Effect of exogenous fibrolytic enzymes on digestion and microbial protein synthesis in ruminants. / WFJ van de Vyver & BA Useni / Effect of crude and pure glycerol on growth performance and carcass and meat quality traits of grower pigs when used to replace maize at 5, 10 and 18%. / AT Kanengoni, OG Makgothi, S Monesi & R Thomas / Calving spread from unrestricted breeding season and its impact on performance of communal, developing and commercial herds. / D Nembilwi, A Maiwashe, LE Matjuda, T Netshilema & NB Nengovhela
14:45 / 15:00 / Identification of the most economical energy level in lucerne (Medicago sativa) hay-based finishing diets for lambs. / VN Shivambu, JH Hoon, BR King & MA Snyman / Supplemental Vitamin E: A requirement for optimizing libido and reproductive capacity in boars. / DO Umesiobi / Impact of calving spread on cow fertility and weaning weight performance / T Netshilema, NB Nengovhela, LB Matjuda & A Maiwashe
15:00 / 15:30 / TEA / COFFEE (Kweekskool passage)
Theme & chairperson / Ruminant nutrition for efficient production
(Murray Hall, Room 2002) – Dr Florence Nherera / Monogastric nutrition for efficient production
(Hofmeyr Hall - Room 2003) – Dr Elsje Pieterse / Reproductive efficiency of livestock in commercial systems
(MDIV Hall - Room 1006) – Prof. Johan Greyling
Pages / 13 – 15 / 16 – 18 / 18 - 20
15:30 / 15:45 / Supplementing live yeast to lactating Jersey cows grazing ryegrass/kikuyu pastures. / C Coetzee, R Meeske& LJ Erasmus / Comparison of growth performance of three chicken breeds on affordable low diet and housing. / NM Molalakgotla, KC Lehloenya & B Sutherland / The effect of exogenous anabolic steroids on the testicular and seminal characteristics of Boer goat bucks. / T Makae, JPC Greyling, LMJ Schwalbach & MB Raito
15:45 / 16:00 / The effects of season, species and tannins on gas production kinetics of plant species harvested in different seasons from the sub-humid subtropical savanna, South Africa. / NAD Basha, PF Scogings & IV Nsahlai / Protease improves broiler performance with reduced amino acid density diets / MC Mamabolo, O Gutierrez & RE Buresh /
General characterization and cryopreservation of South African unimproved indigenous goat semen
/ B Matshaba, LM Schwalbach, M Mphaphathi, C Nemes, C Ngwane, JPC Greyling, V Éva & TL Nedambale16:00 / 16:15 /
High fibre concentrate supplementation to lactating Jersey cows on kikuyu/ryegrass pasture.
/ WAL Lingnau, R. Meeske& CW Cruywagen / Evaluation of the influence of the use of an experimental fibrolytic enzyme on production apparent digestibility and production parameters of broiler chicks. / C Botha & E Pieterse / Evaluation of a simplified superovulation protocol in Boer goats. / KC Lehloenya16:15 / 16:30 / Strategic supplementation of lucerne hay to high producing dairy cows grazing ryegrass over-sown into kikuyu pasture. / L Müller, R Meeske & LJ Erasmus / Enzyme activity in the small intestine of ostrich (Struthio camelus L.) chicks from two to sixteen days post-hatching on a pre-starter broiler diet /
M Viljoen, EA Boomker, JT Soley & TS Brand
/ Functional integrity of boar spermatozoa and subsequent fertility of sows following hemi-orchidectomy in boars at different ages. / DO Umesiobi16:30 / 16:45 / The effect of nitrogen fertilization and stage of re-growth of kikuyu on rumen fermentation parameters. / TJ Dugmore & IV Nsahlai /
Carbon:nitrogen ratios in horse feeds for optimal hindgut fermentation
/ MB Young1*& M Laing2 / Superovulatory response and embryo recovery rate in Nguni heifers and cows. / TL Nedambale, ML Mphaphathi & P Malusi16:45 / 17:00 / Selenium concentration in maize grain in South Africa / C Courtman, JBJ van Ryssen & A Oelofse /
A novel consideration of nutritional parameters in South African horse feeds following in vitro, in vivo and in silico characterization.
/ MB Young1*& M Laing2 / Breech and crutch cover scores of Merino ewes divergently selected for their ability to rear multiple offspring – preliminary results / AJ Scholtz, SWP Cloete, JJE Cloete, ACM Kruger, JB van Wyk & TC de K. van der Linde17:00 / 17:30 / Depart for braai
18:00 / 22:00 / BRAAI (Percheron Hall, Elsenburg)
WEDNESDAY, 13 July 2011
08:00 / 08:30 / Registration for the day (Registration Station, Kweekskool passage)
Theme & chairperson / Meat science for the modern consumer
(Hofmeyr Hall, Room 2003) – Dr Jasper Cloete / The impact of genetics and breeding on production efficiency (Murray Hall, Room 2002) – Prof. Kennedy Dzama / Reproductive efficiency of livestock in commercial systems
(MDIV Hall, Room 1006) – Dr Carel Muller
Pages / 20 - 22 / 22 - 25 / 25 - 27
08:30 / 08:45 / Effect of slaughter technique on the bleed-out, blood in the trachea and blood splash in the lungs of cattle. / B Agbeniga & EC Webb / Crossbreeding heterosis in beef cattle in arid areas. / A Theunissen, MM Scholtz, FWC Neser & MD MacNeil / Characteristics of raw sperm cell motility rates from indigenous chickens following analysis by computer aided sperm analysis (CASA). / MB Makhafola, ML Mphaphathi, MB Masenya DO Umesiobi& TL Nedambale
08:45 / 09:00 / The efficiency of electrical stimulation to counteract the negative effects of β-agonists on meat tenderness of feedlot cattle. / M Hope-Jones, PE Strydom,L Frylinck & EC Webb / Evaluation of past selection for performance imposed on South African Nguni cattle. / EL Matjuda, MD MacNeil & A Maiwashe / Comparison of slow freezing and vitrification method on cryopreserving Venda chicken sperm cells. / ML Mphaphathi, MB Masenya, PH Munyai,D Luseba& TL Nedambale
09:00 / 09:15 / Sensory profiling of intensive reared chicken compared to free range. / S Joubert, LC Hoffman, E Pieterse & M Muller / The inclusion of phantom groups in the Bonsmara genetic analysis. / HE Theron, RR van der Westhuizen, J van der Westhuizen, NM Maiwashe & F Jordaan / Preliminary study on the use of cryopreserved cockerel semen for AI in chickens / T Mosenene, JPC Greyling, MB Raito,LM Schwalbach
09:15 / 09:30 / Influence of larval protein on carcass, meat quality and sensory characteristics of broiler meat. / E Pieterse, LC Hoffman & Q Pretorius / Alternative genomic evaluation methods in livestock improvement programmes. / A Maiwashe / The relationships of body measurements with reproduction in ostriches. / SJ van Schalkwyk, SWP Cloete, A Engelbrecht, H Lambrechts & Z Brand
09:30 / 09:45 / The effect of Moringa oleifera supplementation on goat meat colour. / C Wapi, B Moyo & V Muchenje / Environmental factors influencing milk urea nitrogen in South African Holstein cattle. / ML Kgole, CB Banga & C Visser / A comparison of the reproduction of SA blacks, Zimbabwean Blue and Kenyan Red ostriches. / H Lambrechts
09:45 / 10:00 /
Factors affecting physico-chemical characteristics of mutton from sheep slaughtered at a low throughput abattoir.
/ AY Chulayo & V Muchenje / Computer program for assigning breeding mates without compromising genetic gains. / L Bergh & MM Scholtz / Productivity of first parity sows in the South African Highveld region. / HL Lucht,, NH Casey & RJ Coertze10:00 / 10:15 /
TBC
/ TBC / Comparison of three different extenders and storage temperature on motility characteristics of Kolbroek sperm cells. / MH Mapeka, KC Lehloenya, B Sutherland & TL Nedambale10:15 / 10:40 / TEA / COFFEE (Kweekskool passage)
Theme & chairperson / Plenary session: Animal Science - how the past 50 years shaped the future for the next 50 years
(Attie van Wijk Hall, Kweekskool Auditorium) – Prof. Eddie Webb
Pages / 1-3
10:40 / 11:10 / Prof. Frans van der Merwe (Animal nutrition)
11:10 / 11:40 / Dr Japie van der Westhuizen (Genetics)
11:40 / 12:10 / Prof. Akke van der Zijpp (Socio-political realities)
12:10 / 12:40 / Prof. Hettie Schonveldt (Research funding challenges)
12:40 / 13:10 / Discussion session: Academic requirements for registration (confirm title with Este vM-Koster)
13:10 / 14:10 / LUNCH (Kweekskool passage and Break-away area)
Theme & chairperson / Meat science for the modern consumer / The economics of efficient production systems
(Hofmeyr Hall, Room 2003) – Dr Buks Olivier / The impact of genetics and breeding on production efficiency
(Murray Hall, Room 2002) – Prof. Voster Muchenje / Socio-policital realities and ways to address it
(MDIV Hall, Room 1006) – Prof. Akke van der Zijp
Pages / 28 – 30 / 30 - 33 / 34 - 36
14:10 / 14:25 / Predicting retail beef yield from real-time ultrasound measurements. / J Knight, E van Marle-Koster & HE Theron / The potential benefits of implementing genomic selection in South African dairy cattle. / C Banga / The impact of psychological, cultural and social capital in the integration of the South African Beef Industry / NB Nengovhela & RJS Beeton
14:25 / 14:40 / The economics of supplying different levels of supplementary feed for finishing off ostriches on irrigated lucerne pastures. / M Strydom, JW Jordaan,TS Brand& JM van Heerden / Applying multiple-trait selection for the sustainable improvement of overall economic merit in South African dairy cattle. / C Banga / The use of simulation models to study factors influencing the efficiency of livestock production on semi-arid rangeland. / FD Richardson
14:40 / 14:55 / Development of a selection index of growth and carcass traits for South African Large White Pigs. / B Dube, SD Mulugeta& K Dzama / Opportunities and challenges of genomic selection in dairy cattle. / Maiwashe A / Preliminary investigation on veld degradation as a societal cost to economic activity in Umbumbulu District, South Africa. / P Kunene
14:55 / 15:10 / Breeding objectives for South African Nguni cattle reflective of the production, profitability and sustainability phases of production. / EL Matjuda, MD MacNeil & A Maiwashe / Insights into population genetics of pigs in Southern Africa. / TE Halimani, FC Muchadeyi, M Chimonyo & K Dzama / Village chicken production system of the Amatola Basin of the Eastern Cape Province, South Africa. / NMB Nyoni & PJ Masika
15:10 / 15:25 / Evaluating market opportunities and constraints faced by communal pig farmers in the Eastern Cape Province of South Africa. / N Bovula, J Madzimure, T Nkukwana & V Muchenje / Assessment of inbreeding depression for functional herd life in the South African Jersey breed based on inbreeding level and rate of inbreeding. / J du Toit, JB van Wyk & A Maiwashe / Improved production efficiency in cattle to reduce the carbon footprint of beef. / MM Scholtz, HE Theron, A Maiwashe & Y Steyn
15:25 / 15:40 / Effect of parity on the proximate composition and fatty acid profile of milk from Nguni cattle grazing on natural pastures. / Z Rani, M Chimonyo, A Hugo & V Muchenje* / Exploring fertility traits other than calving interval for inclusion in a national genetic evaluation for South African Holstein cows. / JP Potgieter, CJC Muller, SWP Cloete, OT Zishiri& K Dzama / A survey on management practices of pigs in communal production system in the Eastern Cape Province, South Africa. / PC Jonas
15:40 / 15:55 / TBC / The Tankwa goat: a real cliff hanger. / A Kotze, DL Dalton, E van Marle-Köster & T Jonker / Assessment of management of natural resources by developing farmers in the Northern Cape. / M Daka
15:55 / 16:25 / TEA / COFFEE (Kweekskool Hallway)
16:15 / Late / SASAS Members meeting (Attie van Wijk Hall – Kweekskool Auditorium)
19:00 / CONGRESS GALA DINNER (Sanlam Hall, Langenhoven Centre)
THURSDAY, 14 July 2011
07:45 / 08:15 / Registration for the day (Registration Station, Kweekskool passage)
Theme & chairperson / Ratite session 1: Exploiting diversity within and across ratite strains (Hofmeyr Hall, Room 2003) – Dr Koot van Schalkwyk / The impact of genetics and breeding on production efficiency (Murray Hall, Room 2002) – Prof. Schalk Cloete / Ensuring efficient animal production through health management (MDIV Hall, Room 1006) – Dr Luis Schwalbach
Pages / 36 - 39 / 40 - 42 / 43 - 45
08:15 / 08:30 /
Utilization of microsatellites loci to quantify genetic variation within and between ostrich breeds.
/ AH Davids, SWP Cloete, AE Bester-Van der Merwe, F Muchadeyi, R Slabbert & K Dzama / Exploring the use of random regression models for modelling egg and chick production traits of ostrich females over years. / MD Fair, JB van Wyk & SWP Cloete / Evaluation of nano silver as a possible coccidiostat in broiler production. / N Chauke & FK Siebrits08:15 / 08:30 / Genetic parameters of ostrich chick survival to 24 weeks post hatch. / MD Wang, SWP Cloete& K Dzama / Genetic parameters and realised genetic gains in traits of economic importance in ostriches. / SWP Cloete, Z Brand & A Engelbrecht / Ectoparasites found on local chickens in Malawi. / Z Banda
08:30 / 08:45 / Using additive genetic variation to improve the hatchability of ostrich eggs / Z Brand, SWP Cloete, IA Malecki & CR Brown / Genetic analysis of sow productivity traits in South African Large White pigs. / SD Mulugeta, B Dube, K Dzama / Control of ectoparasites on Malawi local chickens / Z Banda
08:45 / 09:00 / Using additive genetic variation to improve ostrich leather and meat production. / A Engelbrecht, SWP Cloete, JB van Wyk & KL Bunter / Searching for SNPs to improve sheep robustness: The role of CYP17. / D Hough, JJE Cloete, SWP Cloete & P Swart / Metacarpal paralysis in captive cheetah: a case study. / EC Webb & J Grobler
09:00 / 09:15 / Non-additive genetic variation and heterosis in ostriches. / AH Davids, SWP Cloete& K Dzama / The relationship between growth performance of Namibian Veldram-tested Dorper rams and the growth performance of their progeny. / HJF Grobler, JW Jordaan, GJ Taylor & M van der Rijst / A histological and morphometric study of the small intestine of ostrich (Struthio camelus L.) chicks from two to sixteen days post-hatching on a pre-starter broiler diet. /
M Viljoen, JT Soley, EA Boomker & TS Brand
09:15 / 09:30 / Allelic diversity of ostrich colonies using tetra-nucleotide microsatellite markers. / JM Ledger, IA Malecki &DM Groth / Variation in reproduction traits contained in a divergently selected South African Merino flock. / L Sandenbergh, SWP Cloete & ACM Kruger / The impact of psychological, cultural and social capital in the integration of the South African Beef Industry. / NB Nengovhela & RSJ Beeton09:30 / 09:45 / Preliminary biochemical investigation on the protein content of ostrich seminal plasma. / KE Douglas, M Bonato, P Swart, IA Malecki & SWP Cloete
/ Phenotypic expression of genetic gains in some sheep flocks in South Africa. / JJ Olivier & SWP Cloete / Effect of protective coats on physiological parameters of Angora goats exposed to cold, wet and windy conditions / JH Hoon, MA Snyman & M van Heerden
09:45 / 10:15 / TEA / COFFEE (Kweekskool passage)
Theme & chairperson / Ratite session 2: Harnessing reproductive technology to exploit additive and non-additive variation in ratites
(Hofmeyr Hall, Room 2003) – Dr Derick Swart / The impact of genetics and breeding on production efficiency (Murray Hall, Room 2002) – Prof. Frikkie Neser / Ensuring efficient animal production through health management (MDIV Hall, Room 1006) – Dr Carel Muller
Pages / 45 - 48 / 48 - 51 / 51 - 52
10:15 / 10:30 /
The effect of rearing method on ostrich chick survival and chick weight: Foster parenting, human imprinting and conventional handling.
/MD Wang, SWP Cloete, K Dzama, M Bonato& IA Malecki
/ Genetic and phenotypic characterization of the endangered Namaqua Afrikaner. / SO Qwabe, E van Marle-Koster, C Visser & MA Snyman. / Anthelmintic activity of plant extracts against gastrointestinal nematodes of sheep. / MMA Ahmed, I Nsahlai & M Laing
10:30 / 10:45 / Rate of sperm loss in female ostriches after last mating. / IA Malecki / Genetic trends for the relative economic value of the Merino, Dohne Merino and Dorper breeds. / AC van Graan, D Swart, WJ Olivier & JJ Olivier / The domestication of beef breed types and catecholamines. / HA O’Neill, EC Webb, L Frylinck & P Strydom
10:45 / 11:00 / Preliminary results on artificial insemination in ostriches. / Advances in storage and cryopreservation of emu semen. / M Bonato, PK Rybnik, IA Malecki, CK Cornwallis& SWP Cloete / IA Malecki, S Sood, A Tawang, J Cummins & GB Martin / Genetic variation between and within six selected South African sheep breeds using random amplified polymorphic DNA. / SR Hlophe, N Kunene & CC Bezuidenhout / Mechanisms of resistance to ticks in Nguni cattle reared on semiarid rangelands: Relationships between coat characteristics and tick resistance. / MC Marufu, M Chimonyo & K Dzama
11:00 / 11:15 / Relative egg-laying performance of ostrich females with and without males. / Z Brand, M Bonato, SWP Cloete, IA Malecki & CK Cornwallis / Slaughter and carcass characteristics of lambs from Merino and Dohne Merino ewes in pure or crossbreeding systems with Dormer or Suffolk rams. / JJE Cloete, SWP Cloete & LC Hoffman / Blood metabolites and mineral profiles of Nguni and crossbred calves kept under communal production systems / M Mapekula, M Chimonyo, C Mapiye & K Dzama
11:15 / 11:30 / Seasonal variation in semen characteristics and libido of male ostriches. / M Bonato, PK Rybnik, IA Malecki, CK Cornwallis& SWP Cloete / Genetic trends in a Merino line selected for reduced fibre diameter relative to an unselected control flock. / SWP Cloete, JJ Olivier & E du Toit
11:30 / 11:45 / Viability of ostrich sperm following cryopreservation in straws using N-methyl-acetamide (MA). / IA Malecki & H Kadokawa / Genetic relationships among fibre diameter measures at different ages in a fine wool Merino stud. / WJ Olivier, SWP Cloete, JB van Wyk & AR Gilmour
11:45 / 12:00 / Potential impact of reproductive technology on genetic gains in ostriches. / IA MaleckiSWP Cloete
12:00 / 12:30 / CLOSURE (Attie van Wijk Hall – Kweekskool Auditorium)
12:30 / 13:30 / LUNCH AND DEPARTURE (Kweekskool passage)
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