Twenty-five male Shugor, 25 female Shugor, 25 male Watish and 25 female Watish lambs, individually fed for 57 days, were used to study post-weaning growth performance and carcass composition of these breed types when subjected to a period of intensive feeding. Means and standard error of means of...
El-Karim, A.I.A.
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Owen, J.B.
,
[Post-weaning growth performance, carcass characteristics and preliminary heritability estimates for some carcass traits of two types of Sudan Desert sheep on intensive feeding]
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Post-weaning growth performance, carcass characteristics and preliminary heritability estimates for some carcass traits of two types of Sudan Desert sheep on intensive feeding
A major problem that usually confronts the breeder is ensuring that there is sufficient genetic variability in a population for the trait being improved because this determines the breeding schemes to use for improvement and whether or not sufficient progress could be made. Three hundred full-sib...
Badu-Apraku, B.
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Menkir, A.
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Lum, F.
,
[Genetic variability for grain yield and components in an early tropical yellow maize population under Striga hermonthica infestation]
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Genetic variability for grain yield and components in an early tropical yellow maize population under Striga hermonthica infestation
The repeatability and heritability of body weight, greasy fleece weight and mean fibre diameter, as well as various subjective fleece traits of South African Angora goats were estimated. The first of two data sets analysed, was collected through the Angora goat performance-testing scheme (AGPTS),...
Snyman, M.A.
,
Olivier, J.J.
,
[Repeatability and heritability of objective and subjective fleece traits and body weight in South African Angora goats]
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Repeatability and heritability of objective and subjective fleece traits and body weight in South African Angora goats
The work reported in this paper was initiated to estimate the age at first calving in herd of Kenana cattle with particular reference to the influence of year and season of the birth on age of heifers at calving. It included a feeding trail to elucidate the effects of improved nutrition on body d...
El-Khidir, O.A.
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Khalifa, H.A.A.
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Khalafallah, A.M.
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Gaili, E.S.E.
,
[A study of some economic traits in a herd of Kenana cattle (North Sudan Zebu). II. Age at first calving and effects of improved nutrition on body development and sexual maturity]
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A study of some economic traits in a herd of Kenana cattle (North Sudan Zebu). II. Age at first calving and effects of improved nutrition on body development and sexual maturity
The mean birth weight of Kenana calves in the herd under investigation was 24.2±2.8 kg. Male calves were 1.3 kg heavier at birth than female-calves. The difference was attributed, parity at least, to longer gestation length in case of the male-calves. Calves born to cows 2½-5½ years old were sign...
Khalifa, H.A.A.
,
Khalafallah, M.
,
[A study of some economic traits in a herd of Kenana cattle (Northern Sudan Zebu) I. Birth weight in Kenana cattle]
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A study of some economic traits in a herd of Kenana cattle (Northern Sudan Zebu) I. Birth weight in Kenana cattle
The reproduction of the Kenana cattle was studied to establish the service period (SP), calving interval (CI) gestation period (GP), and economic production characteristics. Age of cow had significant effect on SP and highly significant effect on calving interval. The variations in the SP and in ...
Khalafallah, A.M.
,
Khalifa, H.A.A.
,
[A study of some economic traits in a herd of Kenana cattle. Service period, calving interval and gestation period]
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A study of some economic traits in a herd of Kenana cattle. Service period, calving interval and gestation period