Requirements of milk intake and intake of milk components for pre-weaning growth of Pelibuey lambs
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Requirements of milk intake and intake of milk components for pre-weaning growth of Pelibuey lambs Alfonso Juventino Chay-Canul 1 & Martin Ptáček 2 & Ulises Macías-Cruz 3 & Jorge Alonso Peralta-Torres 1 & Nadia Florencia Ojeda-Robertos 1 & Raciel Estrada Leon 4 & Ricardo Alfonso Garcia-Herrera 1 Received: 21 May 2020 / Accepted: 6 October 2020 # Springer Nature B.V. 2020
Abstract The objective of the present study was to determine the needs of milk intake (MI) and their components (i.e., lactose, fat, protein, and energy) to increase the average daily gain (ADG) of Pelibuey lambs during the pre-weaning period. Data of 62 lambs were used (35 males and 27 females; 32 of single lambing and 30 twins). All lambs were housed in individual pens with their mothers during the first 45 days post-lambing, without access to mother’s food. Every 10 d, MI was estimated by the double lamb weighing method, and then, the intake of each milk component was calculated, considering both milk chemical composition and its estimated intake. The ADG was associated with MI and its components through a linear regression analysis. All milk variables were highly (P < 0.05; 0.69 ≤ r ≤ 0.85) correlated with ADG. The ADG explained (P < 0.0001) between 48 and 72% of the variation observed for MI and its components, being lower for fat intake and higher for MI. Given the positive slope parameter (β1), an increase of one kilogram of body weight required intakes of 3.1 kg of milk, 117 g of fat, 203 g of protein, 187 g of lactose, or 16.8 MJ of energy. In conclusion, Pelibuey lambs to gain one kilogram of live weight during the pre-weaning period need to consume 3.1 kg of milk having an adequate amount of protein, fat, lactose, and energy. Keywords Milk production . Hair sheep . Milking
Introduction The maternal milk is the main source of nutrients for the growth, development, and health of lambs during the first weeks of life (Danso et al. 2016; Burgos-Gonzáles et al. 2018). So, if maternal milk provided to lambs is in low
* Ricardo Alfonso Garcia-Herrera [email protected] 1
División Académica de Ciencias Agropecuarias, Universidad Juárez Autónoma de Tabasco, Carretera Villahermosa-Teapa, km 25, R/A. La Huasteca 2ª Sección, CP 86280 Villahermosa, Tabasco, Mexico
2
Department of Animal Science, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Prague, Czechia
3
Instituto de Ciencias Agrícolas, Universidad Autónoma de Baja California, Ejido Nuevo León S/N, CP. 21705 Mexicali, B. C., Mexico
4
Tecnológico Nacional de México, C.A. Bioprocesos, Instituto Tecnológico Superior de Calkiní, Av. Ah-Canul, C. P. 24900 Calkiní, Campeche, Mexico
amount and in a poor quality, the lamb growth rate and its survival deteriorate significantly during the pre-weaning period (Burgos-Gonzáles et al. 2018; Chay-Canul et al. 2019). Note that nutritional requirements for growth in suckling lambs vary according to sheep breeds, depending on the genetic potential to gain weight and adapt
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