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AbstractFull Text

The objective of this study was to evaluate the effect of non-genetic factors on the characteristics of pre-weaning growth in sheep under tropical conditions. The sex of the lamb, the type of birth (single, multiple) and parity number on the birth weight, weaning weight and preweaning daily gain of ...

Author(s)
Cuello Estrada, M. A.; Moreno Torres, J. D.; Aguilar Aguilar, F. A.; Baracaldo Martínez, A.; Atuesta-Bustos, J. E.
Publisher
Universidad Nacional Mayor de San Marcos, Lima, Peru
Citation
Revista de Investigaciones Veterinarias del Perú (RIVEP), 2019, 30, 1, pp 231-239
Abstract

Data from pre-weaning growth of crossbred calves, born during the years 2009 and 2010 was anlyzed. Three growth traits: birth weight (BW, n=70), weaning weight adjusted to 270 days of age (PD, n=69) and daily weight gains between birth and weaning (GDP, n=69) were considered using General Linear...

Author(s)
Salamanca C., A.; Quintero V., R.; Bentez M., J.
Publisher
Instituto Nacional de Investigaciones Agricolas (INIA), Maracay, Venezuela
Citation
Zootecnia Tropical, 2011, 29, 4, pp 455-465
Abstract

Colombia has eight Creole breeds (Bos taurus), these being descended from the cattle introduced by the Spanish conquerors in 1493, during Christopher Columbus' second voyage. The Sanmartinero (SM) breed originated in the Colombian Orinoquia region's foothills. This breed (as well as most other...

Author(s)
Martínez-Villate, G. C.; Martínez-Correal, G.; Manrique-Perdomo, C.
Publisher
Instituto de Investigaciones de la Orinoquia Colombiana, Meta, Colombia
Citation
Revista Orinoquia, 2009, 13, 2, pp 101-112
Abstract

This study was conducted to determine the environmental and inherent factors that affect the rate of conception at first service in young zebu heifers that had been artificially inseminated (AI) with Bos taurus sperm. The influence of the time of weaning and birth on several increment in liveborn...

Author(s)
Prado, M. C.; Campos G., R.
Publisher
Facultad de Ciencias Agropecuarias, Universidad Nacional de Colombia, Palmira, Colombia
Citation
Acta Agronómica, Universidad Nacional de Colombia, 2000, 50, 1/2, pp 71-77
Abstract

A flock of 288 Rambouillet, Suffolk, Columbia, Finnish Landrace (FL) × Rambouillet, FL × Suffolk and FL × Columbia ewes was divided into 3 groups. Control ewes were bred once per year, in Oct. The other 2 groups were intensively managed to lamb every 8 months, but 4 months out of phase with each...

Author(s)
Rawlings, N. C.; Jeffcoate, I. A.; Howell, W. E.
Citation
Journal of Animal Science, 1987, 65, 3, pp 651-657
Abstract

All possible matings were made among Columbia, Suffolk and Targhee sheep, so as to produce purebred sheep and reciprocal 2- and 3-breed crosses. Data on 5 growth and 9 carcass traits were analysed. Individual heterosis was significant only for feed conversion (3.2%), although it was generally...

Author(s)
Teehan, T. J.; Boylan, W. J.; Rempel, W. E.; Windels, H. F.
Citation
Paper, 30th Annual Meeting, European Association for Animal Production, 1979, No. G2.5, pp 4 pp.
Abstract

437 Suffolk and Columbia-type range ewes, maintained on western Oregon hill pastures during a period of 2 yr, were mated with North Country Cheviot, Dorset, Finnish Landrace (FL) and Romney rams and evaluated for lamb and wool production. Fertility (ewes lambing as a percentage of ewes exposed to...

Author(s)
Levine, J. M.; Hohenboken, W.
Citation
Journal of Animal Science, 1978, 47, 1, pp 89-96

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