Phenotypic and Genetic Parameters of Pre-Weaning Growth Traits in Gentile di Puglia Lambs
Data from 1731 Gentile di Puglia lambs, sired by 65 rams over a 5-year period were analyzed by a mixed model to estimate the variance components for heritability. The considered growth traits were: birth weight (BW), weight at 30 days of age (W30) and average daily gain from birth to 30 days of age (DG). Year of birth, sex of lamb, type of birth (single or twin), dam age at lambing and farm were significant sources of variation for all the considered growth traits. The average lamb weights were 3.85±0.16 kg at birth, 9.57±0.91 kg at 30 days of age and the average daily gain was 191±14 g. Estimates of heritability were 0.33±0.05, 0.41±0.06 and 0.16±0.05 respectively for the same traits. These values suggest there is a good opportunity to improve Gentile di Puglia lambs by selecting animals for growth traits.
[1] L. Mason, A World Dictionary of Livestock Breeds, Types and
Varieties. 4th Edition. C.A.B International, 1996
[2] G. Bufano, E. Bellitti and G. Martemucci, Studio biometrico della razza
"Gentile di Puglia". Ann. Fac. Agr., Bari- vol XXII, 1968, pp 389-414.
[3] ASSONAPA, Caratteri tipici, norme e regolamenti razza ovina Gentile
di Puglia, L.G. Roma, 1987
[4] G. Bufano, C. Dario and E. Pieragostini, "La situazione attuale delle
razze autoctone pugliesi," in Proc. Conf. "Ruolo del germoplasma
animale autoctono nella salvaguardia del terrirorio" Bari 19 September
1996.
[5] SAS, SAS/STAT, User-s Guide, Version 8, (SAS Institute, Cary, NC),
1999.
[6] W. A. Becker, "Estimation of variance components and heritability". in:
Manual of Procedures in Quantitative Genetics. 2nd ed. The Program in
Genetics. Washington State University, Puyallup, WA, 1968, pp 7-59.
[7] R. Gallo, A. Vicenti, C. Dario and D. Cianci, "Risultati dell-incrocio
industriale tra arieti da carne e pecore Gentile di Puglia," in Proc. Conf.
ASPA, 1984, pp 173-180.
[8] C. Dario, G. Bufano and E. Pieragostini, 1995. "Ereditabilità del peso
alla nascita di agnelli di razza Altamurana," in Proc. Conf. ASPA Grado
(GO), 19-22 June, 1995, pp 205-206.
[9] G. Gabriilidis, C. Ligda and A. Georgoudis, "Estimation of certain
phenotypic and genetic parameters for growth traits of the Chios
lambs," Anim. Sci. Rev., vol 21, 1995, pp 5-16.
[10] - S. K. Ercanbrack and D. A. Price, "Selecting for weight and rate of
gain in non inbred lambs," J. Anim. Sci., vol 34, May 1972, pp 713-
725.
[11] I. Boujenane and M. Kerfal, "Estimates of genetic and phenotypic
parameters for growth traits of D-man lambs," Anim. Prod., vol 51, Jan
1990, pp 173-178.
[12] S. Janssens, D. Geysen and W. Vandepitte, "Genetic parameters for live
weight in Belgian Texel sheep," in Proc. of the 51st Annual Meeting of
the European Assoc. for Anim. Prod., Comm. On Sheep and Goat Prod.,
Den Haag, Nederland, August 21-24 2000, pp 1-8.
[13] M. El Fadili, C. Michaux, J. Detilleux and P. L. Leroy,"Genetic
parameters for growth traits of Maroccan Timahdit breed of sheep,".
Small Rum. Res., vol 37, Aug 2000, pp 203-208.
[14] O. Matika, J. B. van Wyk, G. J. Erasmus and R.L. Baker, "Genetic
parameter estimates in Sabi sheep," Livest. Prod. Sci., vol 79, Jan 2003,
pp 17-28.
[15] M. A. Snyman, J. J. Olivier, G. J. Erasmus, J. B. van Wyk, "Genetic
parameters for growth traits in Suffolk Afrino and Merino sheep,"
Livest. Prod. Sci., vol 48, May 1997, pp 111-116.
[16] C. Hagger, "Litter, permanent environment, ram-flock, and genetic
effect on early weight gain of lambs," J. Anim. Sci., vol 76, Feb 1998,
pp 452-457;
[17] B. Bonaiti, J. C. Flamant, M. Prud-hon, F. Berny and A. Desvignes,
"Estimation des paramètres génétiques de la vitesse de croissance et du
poids des agneaux avant la sevrage en race Merinos d-Arles," Ann.
Génét. Sél. Anim., vol 8, July 1976, pp 357-365.
[18] A. G. Larsgard and I. Olesen, "Genetic parameters for direct and
maternal effects on weights and ultrasonic muscle and fat depth of
lambs," Livest. Prod. Sci., vol 55, Sept 1998, pp 273-278.
[19] G. Duguma, S. J. Schoeman, S. W. P. Cloete and G.F. Jordan, 2002.
"Genetic parameter estimates of early growth traits in the Tygerhoek
Merino flock," S. Afr. J. Anim. Sci., vol 32, 2002, pp 66-75.
[20] A. Rashidi, M. S. Mokhtari, A. Safi Jahanshahi and M. R. Mohammad
Abadi, "Genetic parameter estimates of pre-weaning growth traits in
Kermani sheep," Small Rum. Res., vol 74, Jan 2008, pp 165-171.
[1] L. Mason, A World Dictionary of Livestock Breeds, Types and
Varieties. 4th Edition. C.A.B International, 1996
[2] G. Bufano, E. Bellitti and G. Martemucci, Studio biometrico della razza
"Gentile di Puglia". Ann. Fac. Agr., Bari- vol XXII, 1968, pp 389-414.
[3] ASSONAPA, Caratteri tipici, norme e regolamenti razza ovina Gentile
di Puglia, L.G. Roma, 1987
[4] G. Bufano, C. Dario and E. Pieragostini, "La situazione attuale delle
razze autoctone pugliesi," in Proc. Conf. "Ruolo del germoplasma
animale autoctono nella salvaguardia del terrirorio" Bari 19 September
1996.
[5] SAS, SAS/STAT, User-s Guide, Version 8, (SAS Institute, Cary, NC),
1999.
[6] W. A. Becker, "Estimation of variance components and heritability". in:
Manual of Procedures in Quantitative Genetics. 2nd ed. The Program in
Genetics. Washington State University, Puyallup, WA, 1968, pp 7-59.
[7] R. Gallo, A. Vicenti, C. Dario and D. Cianci, "Risultati dell-incrocio
industriale tra arieti da carne e pecore Gentile di Puglia," in Proc. Conf.
ASPA, 1984, pp 173-180.
[8] C. Dario, G. Bufano and E. Pieragostini, 1995. "Ereditabilità del peso
alla nascita di agnelli di razza Altamurana," in Proc. Conf. ASPA Grado
(GO), 19-22 June, 1995, pp 205-206.
[9] G. Gabriilidis, C. Ligda and A. Georgoudis, "Estimation of certain
phenotypic and genetic parameters for growth traits of the Chios
lambs," Anim. Sci. Rev., vol 21, 1995, pp 5-16.
[10] - S. K. Ercanbrack and D. A. Price, "Selecting for weight and rate of
gain in non inbred lambs," J. Anim. Sci., vol 34, May 1972, pp 713-
725.
[11] I. Boujenane and M. Kerfal, "Estimates of genetic and phenotypic
parameters for growth traits of D-man lambs," Anim. Prod., vol 51, Jan
1990, pp 173-178.
[12] S. Janssens, D. Geysen and W. Vandepitte, "Genetic parameters for live
weight in Belgian Texel sheep," in Proc. of the 51st Annual Meeting of
the European Assoc. for Anim. Prod., Comm. On Sheep and Goat Prod.,
Den Haag, Nederland, August 21-24 2000, pp 1-8.
[13] M. El Fadili, C. Michaux, J. Detilleux and P. L. Leroy,"Genetic
parameters for growth traits of Maroccan Timahdit breed of sheep,".
Small Rum. Res., vol 37, Aug 2000, pp 203-208.
[14] O. Matika, J. B. van Wyk, G. J. Erasmus and R.L. Baker, "Genetic
parameter estimates in Sabi sheep," Livest. Prod. Sci., vol 79, Jan 2003,
pp 17-28.
[15] M. A. Snyman, J. J. Olivier, G. J. Erasmus, J. B. van Wyk, "Genetic
parameters for growth traits in Suffolk Afrino and Merino sheep,"
Livest. Prod. Sci., vol 48, May 1997, pp 111-116.
[16] C. Hagger, "Litter, permanent environment, ram-flock, and genetic
effect on early weight gain of lambs," J. Anim. Sci., vol 76, Feb 1998,
pp 452-457;
[17] B. Bonaiti, J. C. Flamant, M. Prud-hon, F. Berny and A. Desvignes,
"Estimation des paramètres génétiques de la vitesse de croissance et du
poids des agneaux avant la sevrage en race Merinos d-Arles," Ann.
Génét. Sél. Anim., vol 8, July 1976, pp 357-365.
[18] A. G. Larsgard and I. Olesen, "Genetic parameters for direct and
maternal effects on weights and ultrasonic muscle and fat depth of
lambs," Livest. Prod. Sci., vol 55, Sept 1998, pp 273-278.
[19] G. Duguma, S. J. Schoeman, S. W. P. Cloete and G.F. Jordan, 2002.
"Genetic parameter estimates of early growth traits in the Tygerhoek
Merino flock," S. Afr. J. Anim. Sci., vol 32, 2002, pp 66-75.
[20] A. Rashidi, M. S. Mokhtari, A. Safi Jahanshahi and M. R. Mohammad
Abadi, "Genetic parameter estimates of pre-weaning growth traits in
Kermani sheep," Small Rum. Res., vol 74, Jan 2008, pp 165-171.
@article{"International Journal of Biological, Life and Agricultural Sciences:50019", author = "M. Selvaggi and F. Pinto and A. R. Pesce Delfino and A. Vicenti and C. Dario", title = "Phenotypic and Genetic Parameters of Pre-Weaning Growth Traits in Gentile di Puglia Lambs", abstract = "Data from 1731 Gentile di Puglia lambs, sired by 65 rams over a 5-year period were analyzed by a mixed model to estimate the variance components for heritability. The considered growth traits were: birth weight (BW), weight at 30 days of age (W30) and average daily gain from birth to 30 days of age (DG). Year of birth, sex of lamb, type of birth (single or twin), dam age at lambing and farm were significant sources of variation for all the considered growth traits. The average lamb weights were 3.85±0.16 kg at birth, 9.57±0.91 kg at 30 days of age and the average daily gain was 191±14 g. Estimates of heritability were 0.33±0.05, 0.41±0.06 and 0.16±0.05 respectively for the same traits. These values suggest there is a good opportunity to improve Gentile di Puglia lambs by selecting animals for growth traits.
", keywords = "heritability estimate, growth traits, lambs, Gentile diPuglia.", volume = "5", number = "6", pages = "328-3", }
