Crossbreeding Cattle for Milk Production in the Tropics: Effects of Genetic and Environmental Factors on the Performance of Improved Genotypes on the Cameroon Western High Plateau

Three hundred and sixty-four records on dairy production obtained from 540 lactations of 145 cows that calved between 1974 and 1994 at the Bambui Centre of Agricultural Research for Development in the western highlands of Cameroon were analyzed for effects of genotype and environment on milk product...

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Main Authors: T. D. Djoko, D. A. Mbah, J. N. Mbanya, P. Kamga, N. R. Awah, M. Bopelet
Format: Article
Language:English
Published: CIRAD 2003-01-01
Series:Revue d’Elevage et de Médecine Vétérinaire des Pays Tropicaux
Subjects:
Online Access:http://revues.cirad.fr/index.php/REMVT/article/view/9877
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spelling doaj-ed92d7aa86934223adcd1eab86d856082020-11-25T00:16:12ZengCIRADRevue d’Elevage et de Médecine Vétérinaire des Pays Tropicaux0035-18651951-67112003-01-01561-2637210.19182/remvt.98779877Crossbreeding Cattle for Milk Production in the Tropics: Effects of Genetic and Environmental Factors on the Performance of Improved Genotypes on the Cameroon Western High PlateauT. D. Djoko0D. A. Mbah1J. N. Mbanya2P. Kamga3N. R. Awah4M. Bopelet5Institute of Agricultural Research for Development, PO Box 2123, Yaounde, CameroonMinistry of Scientific and Technical Research, PO Box 1457, Yaounde, CameroonIRAD Bambui Centre, PO Box 51, Bamenda, CameroonIRAD Bambui Centre, PO Box 51, Bamenda, CameroonInstitute of Agricultural Research for Development, PO Box 2123, Yaounde, CameroonUniversity of Yaounde I, Faculty of Science, Animal Physiology Laboratory, PO Box 812, Yaounde, CameroonThree hundred and sixty-four records on dairy production obtained from 540 lactations of 145 cows that calved between 1974 and 1994 at the Bambui Centre of Agricultural Research for Development in the western highlands of Cameroon were analyzed for effects of genotype and environment on milk production and reproduction traits. Cow genotypes were Holstein-Friesian (H), Jersey (J), Holstein-Red Fulani F1 (H1RF1), Holstein-Gudali F1 (H1G1), Jersey-White Fulani F1 (J1WF1) and Jersey-White Fulani backcrosses (J3WF1, J7WF1). Effects of genotype, season and year of calving, parity and age at first calving (AFC) were analyzed. The lactation milk yield (MYLD), lactation length (LL), annualized milk yield (AMP), calving interval (CI) and dry period (DP) were also analyzed. F1 crosses (H1G1, J1WF1, H1RF1) and backcrosses (J3WF1, J7WF1) were compared. H1G1 were superior to H1RF1, J1WF1, and J3WF1 with regard to MYLD, AMP, LL, CI, and DP. For AFC, H1G1 were superior to J1WF1, J3WF1, J7WF1, but inferior to H1RF1. Jersey backcrosses were superior to Jersey F1. Milk production of F1 crosses varied from 2.6 times (J1WF1 vs WF) to 4.3 times (H1RF1 vs RF) the yield of local breeds. Among F1 crosses, H1G1 were the best.http://revues.cirad.fr/index.php/REMVT/article/view/9877BovinCroisementProduction laitièreFacteur de rendementTropiquesCameroun
collection DOAJ
language English
format Article
sources DOAJ
author T. D. Djoko
D. A. Mbah
J. N. Mbanya
P. Kamga
N. R. Awah
M. Bopelet
spellingShingle T. D. Djoko
D. A. Mbah
J. N. Mbanya
P. Kamga
N. R. Awah
M. Bopelet
Crossbreeding Cattle for Milk Production in the Tropics: Effects of Genetic and Environmental Factors on the Performance of Improved Genotypes on the Cameroon Western High Plateau
Revue d’Elevage et de Médecine Vétérinaire des Pays Tropicaux
Bovin
Croisement
Production laitière
Facteur de rendement
Tropiques
Cameroun
author_facet T. D. Djoko
D. A. Mbah
J. N. Mbanya
P. Kamga
N. R. Awah
M. Bopelet
author_sort T. D. Djoko
title Crossbreeding Cattle for Milk Production in the Tropics: Effects of Genetic and Environmental Factors on the Performance of Improved Genotypes on the Cameroon Western High Plateau
title_short Crossbreeding Cattle for Milk Production in the Tropics: Effects of Genetic and Environmental Factors on the Performance of Improved Genotypes on the Cameroon Western High Plateau
title_full Crossbreeding Cattle for Milk Production in the Tropics: Effects of Genetic and Environmental Factors on the Performance of Improved Genotypes on the Cameroon Western High Plateau
title_fullStr Crossbreeding Cattle for Milk Production in the Tropics: Effects of Genetic and Environmental Factors on the Performance of Improved Genotypes on the Cameroon Western High Plateau
title_full_unstemmed Crossbreeding Cattle for Milk Production in the Tropics: Effects of Genetic and Environmental Factors on the Performance of Improved Genotypes on the Cameroon Western High Plateau
title_sort crossbreeding cattle for milk production in the tropics: effects of genetic and environmental factors on the performance of improved genotypes on the cameroon western high plateau
publisher CIRAD
series Revue d’Elevage et de Médecine Vétérinaire des Pays Tropicaux
issn 0035-1865
1951-6711
publishDate 2003-01-01
description Three hundred and sixty-four records on dairy production obtained from 540 lactations of 145 cows that calved between 1974 and 1994 at the Bambui Centre of Agricultural Research for Development in the western highlands of Cameroon were analyzed for effects of genotype and environment on milk production and reproduction traits. Cow genotypes were Holstein-Friesian (H), Jersey (J), Holstein-Red Fulani F1 (H1RF1), Holstein-Gudali F1 (H1G1), Jersey-White Fulani F1 (J1WF1) and Jersey-White Fulani backcrosses (J3WF1, J7WF1). Effects of genotype, season and year of calving, parity and age at first calving (AFC) were analyzed. The lactation milk yield (MYLD), lactation length (LL), annualized milk yield (AMP), calving interval (CI) and dry period (DP) were also analyzed. F1 crosses (H1G1, J1WF1, H1RF1) and backcrosses (J3WF1, J7WF1) were compared. H1G1 were superior to H1RF1, J1WF1, and J3WF1 with regard to MYLD, AMP, LL, CI, and DP. For AFC, H1G1 were superior to J1WF1, J3WF1, J7WF1, but inferior to H1RF1. Jersey backcrosses were superior to Jersey F1. Milk production of F1 crosses varied from 2.6 times (J1WF1 vs WF) to 4.3 times (H1RF1 vs RF) the yield of local breeds. Among F1 crosses, H1G1 were the best.
topic Bovin
Croisement
Production laitière
Facteur de rendement
Tropiques
Cameroun
url http://revues.cirad.fr/index.php/REMVT/article/view/9877
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