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Fattening performance of halfbred and three-breed crossbred ram lambs in an intensive-feeding system†

Published online by Cambridge University Press:  02 September 2010

H. Goot ,
E. Eyal ,
Y. Folman  and
W. C. Foote
H. Goot
Affiliation:
Institute of Animal Science, Agricultural Research Organization, Volcani Center, 50250 Bet Dagan, Israel
E. Eyal
Affiliation:
Institute of Animal Science, Agricultural Research Organization, Volcani Center, 50250 Bet Dagan, Israel
Y. Folman
Affiliation:
Institute of Animal Science, Agricultural Research Organization, Volcani Center, 50250 Bet Dagan, Israel
W. C. Foote
Affiliation:
International Sheep and Goat Institute, Utah State University, Logan, Utah 84322, USA
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Abstract

Results of two fattening trials, with 49 crossbred ram lambs fattened on an all-concentrate diet given ad libitum with toasted soya bean meal as the main protein source, are presented.

In the first 84-day trial (January to March 1979) there were 32 twin- and triplet-born ram lambs of five genotypes, i.e. Finn-Awassi F2 (FAF 2), Romanov-Awassi F2 (RAF2), Assaf × Finn-Mutton Merino (AsFMM), Suffolk × Finn-Awassi (SuFA) and Suffolk × Finn-Mutton Merino (SuFMM). The overall means ( + s.d.) of the parameters investigated were: initial age, 64·6( + 4·5) days; initial weight, 17·6(±3·0)kg; final weight, 52·2(±4-l)kg; daily gain, 411( + 38)g; food intake, 1·5(±0·3)kg dry matter per day; and food conversion, 3·6( + 0·8)kg dry matter per kg gain.

In the second 56-day trial (August to September 1979) there were 17 single-, twin- and triplet-born FAF2 and Assaf × Finn-Awassi (AsFA) ram lambs. The overall means (±s.d. ) of the parameters investigated were: initial age, 64·1(±8·7) days; initial weight, 24·3(+ 3·6)kg; final weight, 48·5(±5·6)kg; daily gain, 431(±24)g; food intake, l-5(±0·3)kg dry matter per day; and food conversion, 3·5( + 0·7)kg dry matter per kg gain.

In both trials the differences between genotypes in daily gain, food intake and food conversion were not statistically significant and the performance of the progeny of Australian Suffolk and Assaf rams was similar to that of the progeny sired by Finn-Awassi and Romanov-Awassi rams.

Food intake and food conversion were highly correlated with weight of lambs, i.e. r = 0·8864 and r = 0·8857 (d.f. 36), respectively.

In both trials the relationships between daily gain and the pre-fattening performance of the lambs (birth weight, type of birth, weaning age and weight, rates of growth to weaning and from weaning to the start of the trials, as well as the initial age and weight) were not statistically significant.

Type
Research Article
Information
Animal Production , Volume 35 , Issue 2 , October 1982 , pp. 237 - 243
Copyright
Copyright © British Society of Animal Science 1982

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References

REFERENCES

Folman, and Eyal, E. 1978. A note on the performance of Assaf male lambs reared intensively on an all-concentrate diet with herring meal or toasted soya bean meal as the main protein source. Anim. Prod. 26: 331–334.Google Scholar
Fraser, C. and Ørskov, E. R. 1974. Cereal processing and food utilization by sheep. 1. The effect of processing on utilization of barley by early-weaned lambs. Anim. Prod. 18: 75–83.Google Scholar
Goot, H. 1966. Studies on the native Awassi sheep and its crosses with the exotic East Friesian milk sheep.) Pamph. Volcani Inst. Agric. Res., Bet Dagan, No. 115.Google Scholar
Goot, H. 1975. Increased lamb production from Finnsheep—Mutton Merino crossbreds in Israel. Wool Technol. Sheep Breed. 22 (3): 18–22.Google Scholar
Goot, H. 1981. Some bio-economic models of lamb production. Int. Symp. Pastoral Sheep Systems Intensive Econ. Environment, Shoresh, pp. 1–14.Google Scholar
Goot, H., Eyal, E., Folman, Y. and Foote, W. C. 1979. Contemporary comparisons between progeny by Finnish Landrace and Romanov rams out of Mutton Merino and Awassi ewes. Livest. Prod. Sci. 6: 283–293.CrossRefGoogle Scholar
Goot, H., Folman, Y., Benjamin, R. and Drori, D. 1976. Finn-Mutton Merino and Finn-Awassi crosses in the semiarid zone of Israel. 27th A. Meet. Eur. Assoc. Anim. Prod., Zurich, G45S53.Google Scholar
Goot, H., Foote, W. C., Eyal, E. and Folman, Y. 1980. Crossbreeding to increase meat production of the native Awassi sheep. Spec. Publs Agric. Res. Orgn, Bet Dagan, No. 175.Google Scholar
Goulden, C. H. 1952. Methods of Statistical Analysis. 2nd ed. John Wiley, New York.Google Scholar
Jensen, N. E. and Hansen, Karin. 1980. Individprøver med lam 1980. Beretn. St. Husdyrbrugs forsøg, 500.Google Scholar
Latif, M. G. A. and Owen, E. 1980. A note on the growth performance and carcass composition of Texel- and Suffolk-sired lambs in an intensive feeding system. Anim. Prod. 30: 311–314.Google Scholar
Maijala, K. 1980. Experiences of Finnsheep and its crosses as dams for fat lambs. Symp. Intensive Sheep Prod., Helsinki, 1979, pp. 2–9.Google Scholar
More O'Ferrall, G. J. and Timon, V. M. 1977. A comparison of eight sire breeds fo r lamb production. 1. Lamb growth and carcass measurements. Ir. J. Agric. Res. 16: 267–275.Google Scholar
Nitter, G. 1978. Breed utilisaton for meat production in sheep. Anim. Breed. Abstr. 46: 131–143.Google Scholar
Ørskov, E. R., Fraser, C., Gill, J. C. and Corse, Elizabeth. L. 1971. The effect in an intensive production system of type of cereal and time of weaning on the performance of lambs. Anim. Prod. 13: 485–492.Google Scholar
Ørskov, E. R., Fraser, C. and McHattie, I. 1974. Cereal processing and food utilization by sheep. 2. A note on the effect of feeding unprocessed barley, maize, oats and wheat on food utilization by early-weaned lambs. Anim. Prod. 18: 85–88.Google Scholar
Sormunen, R. and Antila, U. 1980. Intensive fattening of lambs. Symp. Intensive Sheep Prod., Helsinki, 1979, pp. 123–126.Google Scholar
Vesely, J. A. and Peters, H. F. 1972. Lamb growt h performance of Romnelet, Columbia, Suffolk, and N. C. Cheviot breeds and all single and three-breed crosses among them. Can. J. Anim. Sci. 52: 283–293.Google Scholar
Vesely, J. A. and Peters, H. F. 1979. Lamb growt h performance of certain pure breeds and their 2-, 3-, and 4-breed crosses. Can. J. Anim. Sci. 59: 349–357.CrossRefGoogle Scholar
Wolf, B. T., Smith, C. and Sales, D. I. 1980. Growth and carcass composition in the crossbred progeny of six terminal sire breeds of sheep. Anim. Prod. 31: 307–313.Google Scholar