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Journal of Animal Science, Vol 79, Issue 5 1085-1092, Copyright © 2001 by American Society of Animal Science

JOURNAL ARTICLE

Calf growth in captive Iberian red deer (Cervus elaphus hispanicus): effects of birth date and hind milk production and composition

T. Landete-Castillejos, A. Garcia and L. Gallego
Departamento de Ciencia y Tecnologia Agroforestal, ETSIA, Universidad de Castilla-La Mancha, Albacete, Spain. landete@cita-ab.uclm.es

This study examines effects of birth date, hind milk production and its composition, and weight of hind and calf at birth (HBW and CBW, respectively) on calf growth responses born to Iberian hinds (Cervus elaphus hispanicus) and lactating over 34 wk. Males showed daily gains greater than those of females (P = 0.04). Calf birth weight was strongly related to calf gain over a standard (15-wk) lactation (P < 0.01), but HBW did not influence growth or CBW (P > 0.10). After correcting for nutrient supply, birth date did not affect growth, but birth date x total protein yield (TPY), birth date x total fat yield (TFY), and birth date x total lactose yield (TLY) interactions influenced growth (P < 0.001), and early-born calves showed greater growth than those born late for wk 2 to 34 (P < 0.05). Calf birth weight showed the highest correlation with protein-to-fat ratio in milk (P < 0.001), a high correlation with milk protein content (P < 0.05), and a low negative correlation with fat (P < 0.10). Calf gains also showed the highest correlation with protein-to-fat ratio in milk (P < 0.05). Similarly, total milk yield (TMY), TPY, and TFY during lactation affected growth as single factors (P < 0.001). Calves showed not only an overall difference in daily gain between calves born early or late (P = 0.02), but also a greater speed of growth independently of CBW (percentage of weight gained per week, P < 0.001). Early-born calves were heavier at 12 and 18 mo (P < 0.05). Results suggest that selecting hinds of high milk production and nutrient supply and advancing calving date may increase growth of calves and their performance at adulthood.


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L Gallego, J A Gomez, T Landete-Castillejos, A J Garcia, J A Estevez, F Ceacero, V Pineiro, X Casabiell, and L F de la Cruz
Effect of milk minerals on calf gains and sex differences in mineral composition of milk from Iberian red deer (Cervus elaphus hispanicus)
Reproduction, November 1, 2009; 138(5): 859 - 865.
[Abstract] [Full Text] [PDF]

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 J DAIRY SCIHome page
L. Gallego, T. Landete-Castillejos, A. Garcia, and P. J. Sanchez
Seasonal and Lactational Changes in Mineral Composition of Milk from Iberian Red Deer (Cervus elaphus hispanicus)
J Dairy Sci, February 1, 2006; 89(2): 589 - 595.
[Abstract] [Full Text] [PDF]

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 J DAIRY SCIHome page
T. Landete-Castillejos, A. Garcia, J. A. Gomez, M. I. Berruga, and L. Gallego
Effects of Birth Date and Order in Lactation Performance of Iberian Red Deer (Cervus elaphus hispanicus)
J Dairy Sci, January 1, 2005; 88(1): 154 - 158.
[Abstract] [Full Text] [PDF]


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Copyright © 2001 by the American Society of Animal Science.