
Proceedings of the IV International Conference on
Goats
1987, Volume II, p.1330, Brasilia, Brazil.)
By G. J. Batten, Caprinex Ltd., 75 Ellis Street, Brightwater, Nelson,
New Zealand
ABSTRACT
A program has been carried out in New Zealand to develop a new meat goat breed
by capitalizing on the dynamics of a large base
population. Feral goats are relatively small with typical liveweights at weaning
and maturity of 12/25kg and 16/40kg for does and bucks
respectively. For example, one feral population studied in a farmed environment
for over one year, at weaning time had mean liveweights
for 61 mixed age adult does of 27.48kg (SD 4.01kg)., 26 doe kids 13.0kg (SD
2.2kg)., 14 mixed age adult bucks 28.2kg (SD 5.43kg)., 19
buck kids 14.18kg (SD 1.99kg). The new KIKO breed is based on does screened from
the large feral population mated to bucks from Anglo
Nubian, British Toggenberg and Saanen breeds. With further crossbreeding, and
interbreeding at F2 and F3 generations, stock have
been selected solely for survivability and growth rate in a hill country
pastoral environment. In the 1985/86 season, at weaning
time, mean liveweights for 102 adult does was 48.6kg (SD 10.45kg) 60 doe kids
22.28kg (SD6.5kg), 92 buck kids 29.6kg (SD 5.33kg), and
adult bucks exceeded 100kg. Mean liveweights at 8 months of all 1985 born kids
in the central flock were 37 does 29.36kg (SD 5.8kg). and
42 bucks 35.26kgs. Farmed under typical New Zealand hill country pastoral
conditions, KIKO kid growth rate from birth to weaning
averaged 166gms/da compared to Romney lambs 160gms/da. KIKO goats have been
exported to Pacific Island countries. In Western Samoa, 15
maiden does produced 33 kids with average birth weights of does 2.53kg and of
bucks 2.44kg. Subsequent growth rate to weaning
averaged 180gms/da (140-245gms/da).
INTRODUCTION
Goats suit a wide range of agricultural systems throughout the world, being
versatile and adaptable; their role in improved nutrition and
income is being increasingly recognized (Devendra1982, Raun 1982). They are
already an important source of meat being eaten by a wide
range of people in many countries where the 400 million goats are farmed
primarily for meat production.
However, meat production per animal is not high, although it could be increased
dramatically through breeding, feeding and animal health
(FAO 1985). The situation was summarized by G.C. Taneja at the Third
International Conference on Goat Production and Disease: "...
considerable work appears to have been done in the world to increase milk
production in goats through selection within breeds or crossing
between breeds, but no attempt has been made in the area of systematic breeding
of goats for meat...". This in part reflects farm
structure with small goat flocks, and the logistical problems that inhibits
improvement of indigenous breeds.
The object of the project described in this paper was to accept the implicit
challenge to develop a new breed capable of high performance
to increase meat production under difficult conditions. The method chosen was to
use the power of population dynamics on the large New
Zealand feral goat population to select superior animals, to introduce genes for
improved production, to crossbreed the best
animals, to keep an open nucleus flock and to assess animals' performance under
a range of testing conditions.
After four generations of breeding, a dramatic improvement in liveweight and
animal performance has been achieved and the new KIKO
breed has been established.
PROCEDURES
BASE GOATS. New Zealand feral goats are hardy but they are small and do not
produce much milk.
They derive from domestic goats liberated or escaped over the last 100 years of
European settlement and represent an intermingling of
European dairy goat breeds, Angoras, and ?to a minor extent ?native goats of
other countries. They live in light bush margins and open
grass and tussocklands and have developed inherent hardiness under poor feeding
conditions. They are relatively small. (Table I)
Although individual sub-flocks can contain superior animals, in general the
weight range is not large. Table II shows liveweights of
one feral flock studied in a farmed environment for over one year in 1978/79.
New Zealand feral goats do not produce large quantities of milk. Experience with
over 500 feral does under commercial conditions in
Nelson in 1980/81 showed individual peak yields of no more than 2.5 liters per
day and average five-month lactation yield of 1.5 liters
per day.
The project to capitalize on feral goat hardiness and to improve growth rate
commenced in 1978 when 20 does were selected from New
Zealand-wide feral herds numbering over 1,000. Selection was based on high
liveweight, freedom from constitution faults such as misshapen
feet and jaws, apparent milk production potential as indicated by udder size,
and a block body shape indicating superior fleshing.
DAIRY GOATS. Early kid growth rate is directly related to milk intake
(Morand-Fehr 1982), so it was important to develop a breed with
adequate milk production. Introducing genes from milking breeds was an obvious
choice.
Bucks used in the first three generations of KIKO development came from
commercially managed dairy goat herds. They were progeny of
large, high producing does of sound conformation especially in the milk
production area, and met the size and meat production criteria.
Dairy goat breeds in New Zealand are Saanen, British Toggenberg, British Alpine
and Anglo Nubian in that order of decreasing numbers
with the last three having narrow genetic bases. No buck has been chosen
primarily for breed so blood from all breeds has been
introduced in varying proportions.
INTERBREEDING. Mating plans and decisions have been assisted by advice and
guidance from geneticists in Ministry of Agriculture and
Fisheries. The general policy has been to mate best bucks to best does.
Since 1984, some bucks of the new KIKO breed have been used, but 1986 was the
first year that no outside bucks were used. Assessment of all
stock has been based solely on survivability and growth rate in a policy of
simplifying selection criteria and maximizing progress. The
herd has slowly been increased by adding outside does if they met the selection
criteria, and from progeny if they were in the top half of
their progeny group measured for growth and fertility and if they were superior
to does already in the flock.
Does have been constantly assessed, especially on their progeny quality and an
elite flock of 50 does developed within the current
flock of 150 does.
FLOCK MANAGEMENT. The breeding flock has been farmed on steep hill country under
nutritional conditions classed as demanding ?grazing
unfertilized pastures of Browntop (Agrostis spp), Danthonia spp, Vulpia spp,
Rattail (Sporobolus capensis) and native legume species
with interspersed rushes (Juncus spp) and gorse (Ulex europus) shrubs. There has
been no supplementary feeding, even in conditions
of feed shortage.
Husbandry inputs have been minimal. No hooves are trimmed and goats developing
foot problems are culled. Internal parasite control is
restricted to 2-3 drenches per annum for adults and 5-6 drenches for young
animals in their first year.
Stocking rate is considered to be high at 7.5 does plus progeny per hectare
(2.47 acres) plus 11 sheep per hectare run in conjunction so
that goats are under some group pressure throughout their lives.
Normal goat management is practiced. Does are single sire mated to selected
bucks in autumn to kid in spring, weaning kids at four
months of age. Synchronized mating produces concentrated kidding, which
facilitates management and record keeping.
Animals have been weighed at regular intervals to accumulate growth-rate data,
have been recorded for production characteristics of self
and progeny and analyzed for contribution to breed development.
EXTERNAL TESTING. Both bucks and does have been sold to other environments for
testing. Western Samoa has farmed 15 does and 20
bucks for three years, and 18 does and 2 bucks went to Niue in 1985. In New
Zealand, KIKO bucks have been used in a range of environments
ranging from high-fertility plains to steep hill country.
NEW GENETIC MATERIAL. The open nucleus system allows does of demonstrable
superiority to join the elite flock from outside the on-
farm program. In 1986, KIKO bucks were mated to 600 does selected for large size
on three other farms. Female progeny will be screened and
brought to the central flock site for comparison and assessment on suitability
for inclusion in the elite flock which is reassessed each
year. This program will be extended to 1000 does for 1987 mating.
RESULTS
The KIKO breed has evolved to meet demanding testing conditions in New Zealand
and Pacific Island countries. It is an amalgam of various
genetic resources and now has no definable proportions of known breeds. It has
been selected solely for survivability and growth rate
under commercially farmed conditions, although these conditions also result in
exclusion of goats with poor conformation, fertility, milk
production and temperament. Consequently there is no common coat color or
pattern, nor breed type.
As survivability and high growth rate are major characteristics of the breed,
performance under testing conditions is important.
FIVE MONTH liveweights have been used as the major initial selection point.
Results of early years of breeding are shown in Figure I. In
1985/86, all stock were weighed at weaning when kids were approximately 17 weeks
of age, with results in Table III
EIGHT MONTH liveweights have been chosen as another selection point reflecting
the end of the difficult autumn rearing period when growth
rates are relatively static. Mean liveweights of kids in the elite flock are
shown in Table IV.
FIFTEEN MONTH liveweights have been used s the final selection point for bucks
to be sold. Results for the last two years are shown in
Table V, although environment differences are not excluded.As survivability and
high growth rate are major characteristics of
the breed, performance under testing conditions is important.
In New Zealand, meat goats are often compared with sheep that are grazed on
similar land for meat and wool production. The predominant
sheep breed is Romney that has lamb growth rates of 160gms/da from birth to
weaning on hard hill country. Kiko kids run in conjunction
with sheep on the same land grew at 166gms/da from birth to weaning.
In Western Samoa, 16 maiden does produced 33 kids with average birth weights of
2.53kg (does) and 2.44kg (bucks). Subsequent growth rate
of all kids to weaning averaged 180gms/da in the range 140-245gms/da.
Prolificacy has not been sacrificed for size. To be eligible for the
elite flock, does must produce twins at first kidding. In 1986, the 100
commercial flock weaned 120 kids and the 50 elite flock weaned 81
kids.
Introducing new breeds to increase production from indigenous goats is a
recognized and practiced strategy (Gall 1981, Taneja 1983).
Specialized breeds often have difficulty producing to their potential in the new
environment, and crossbreeding after the first generation
may not demonstrate any superiority (Sanforienzo 1957, 1962). The KIKO, with its
selected crossbred base, has stabilized the aspects of
increased production and demonstrated superiority over other breeds.
For example, KIKO does in Western Samoa outperformed imported Fijian
Nubian-based meat does (J. Kilduff personal communication). Despite
continued acquisition and evaluation since 1981 of 27 Saanen crossbred does and
31 Anglo Nubian crossbred does, they have not been
of sufficient merit to enter the New Zealand flock.
Continued improvement in production is still being sought under the same
management regime. The use of three satellite flocks provide
the opportunity to introduce new genetic material, and simplification with two
major selection parameters and be expected to provide for
maximum progress.
CONCLUSIONS
Four generations of controlled breeding and crossbreeding have improved the
productivity of a selected group of New Zealand feral
goats so that KIKO goats are now twice the size of the average New Zealand feral
goat.
Use of an open nucleus flock and population dynamics has created a breeding
structure that has produced this result and this is capable
of further amendment and improvement.
Selection for two major factors only has maximized progress in those factors
(survivability and growth rate) and facilitated best to best
mating.
Introduction of milk production genes from selected sources has increased kid
growth rate, but emphasis on survivability has
mitigated against incorporation of the poor features of dairy goats.
The testing environment and low input husbandry system has identified weak and
less productive animals facilitating culling and breeding
decisions.
KIKO goats are genetically capable of high levels of meat production and can
produce well under the wide range of conditions in which they
have been tested in New Zealand and overseas countries. They are a suitable
breed to introduce to countries seeking a better breed of
meat goat. They are also an "improver" breed that can add size, growth rate and
milk production to local stock without reducing
hardiness.
This project has shown that systematic breeding can significantly increase goat
meat production, and the Kiko is living proof of the
results.
Table I
New Zealand Feral Goats Liveweights (kg)
| AGE | DOES | BUCKS |
| Weaning | 12 | 16 |
| Maturity | 25 | 40 |
Table II
Deleware Bay Feral Flock
Liveweights at Weaning (kg)
(Standard Deviation in brackets)
| CLASS | DOES | BUCKS |
| Mixed Adults | N=61 27.48(4.01) | N=14 28.20(5.43) |
| Kids | N=26 13.01(2.20) | N=19 14.18(1.99) |
Table III
Kiko Goats 1985/86
Liveweights at Weaning (kg)
(Standard Deviation in brackets)
| CLASS | DOES | BUCKS |
| Mixed Adults | N=102 48.60(10.45) | - |
| Kids | N=60 22.28(6.51) | N=92 29.60(5.33) |
Table IV
Kiko Goats 1986 Elite Flock
Liveweights at Weaning (kg)
(Standard Deviation in brackets)
| CLASS | DOES | BUCKS |
| Young Goats | N=37 29.36(5.80) | N=42 35.26(4.80) |
Table V
Kiko Bucks
Liveweights at 15 months (kg)
(Standard Deviation in brackets)
| 1985 Born | N=20 48.80(6.64) |
| 1984 Born | N=27 44.30(5.00) |
References
Devendra, C. 1982 The socio-economic significance of goat
production in the Asian Region. In: Proceedings of the Third
International Conference of Goat Produciton and Disease. P201-208
Raun, N. 1982 The emerging role of goats in world food production.
In: Proceedings of the Third International Conference on Goat
Production and Disease. P.133-141
Taneja, G. C. 1982 Breeding goats for meat production. In:
Proceedings of the Third International Conference on Goat Production
and Disease. P.27-30.
Morand-Fehr, 1982 Feeding of young goats. In: Proceedings of the
Third International Conference on Goat Production and Disease p.90-
104.
FAO 1979 Agriculture: Toward 2000 Conference Proceedings
Gall, C 1981 Goat Production. Academic Press
Sanfiorenzo J. H. 1957 Agric. Exp. Sta. Bull. #139
Sanfiorenzo, J. H. 1962 Agric Univ. Puerto Rico #46
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