Next Article in Journal
Quality and Physicochemical Traits of Carcasses and Meat from Geese Fed with Lupin-Rich Feed
Next Article in Special Issue
Milk Production of Lacaune Sheep with Different Degrees of Crossing with Manchega Sheep in a Commercial Flock in Spain
Previous Article in Journal
Calcium Electroporation of Equine Sarcoids
Previous Article in Special Issue
Dietary Pomegranate Pulp: Effect on Ewe Milk Quality during Late Lactation
Open AccessArticle

Udder Measurements and Their Relationship with Milk Yield in Pelibuey Ewes

1
División Académica de Ciencias Agropecuarias, Universidad Juárez Autónoma de Tabasco, 86280 Villahermosa, Mexico
2
Tecnológico Nacional de México/ Instituto Tecnológico de Conkal, 97345 Conkal, Mexico
3
Departamento de Posgrado e Investigación, Tecnológico Nacional de México/I. T. Tizimin, 97700 Tizimín, Mexico
4
Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma de Yucatán, 97100 Mérida, Mexico
5
Instituto Tecnológico de la Zona Maya, Tecnológico Nacional de México, 77960 Othón P. Blanco, Mexico
6
Department of Animal Science, Texas A&M University, College Station, TX 77843-2471, USA
7
Departamento de Nutricion Animal, Facultad de Medicina Veterinaria y Zootecnia, Universidad Autonoma del Estado de Mexico, 50000 Toluca, Mexico
*
Author to whom correspondence should be addressed.
Animals 2020, 10(3), 518; https://doi.org/10.3390/ani10030518
Received: 10 February 2020 / Revised: 11 March 2020 / Accepted: 16 March 2020 / Published: 20 March 2020
(This article belongs to the Special Issue Sheep Lactation, Nutrition and Reproduction)
The Pelibuey sheep is considered the main maternal breed in the tropical production systems in Mexico. Nonetheless, there are few studies related to milk production and composition. The quantification of milk production in sheep is important because milk is the main source of nutrients for the growth, development and health of lambs. However, in hair sheep breeds, milking is very difficult due to the small size of their teats. Hence, it is important to evaluate indirect methods to estimate the milk yield in Pelibuey ewes to optimize the growth and to develop management strategies for the lambs.
The study aimed to evaluate the relationship between udder measurements and milk yield (MY) in dairy Pelibuey ewes. Udder measurements were taken twice a week for eight weeks before (initial) and after (final) milking, including udder depth (UD), udder circumference (UC), udder width (UW), teat length (TL) and teat diameter (TD) in 38 multiparous ewes. Additionally, udder volume (UV) and the difference (VDF) between initial UV (UVi) and final (UVf) was calculated as VDF = UVi − UVf. The MY varied from 0.10 kg/d to 1.04 kg/d, with a mean of 0.39 kg/d, ± 0.18 kg/d. Initial UC (UCi) ranged from 25.80 cm to 53.30 cm, and VDF varied from 1 cm3 to 2418 cm3. The TL and TD were not correlated with MY (p > 0.05), while UCi, UVi and VDF were positively correlated with MY (p < 0.0001; r = from 0.66 to 0.74). For the prediction of MY, the obtained equations had an r2 ranging from 0.54 to 0.63. The UCi, UDf, UWi and UWf were included in these models (p < 0.05). It is concluded that there was an acceptable correlation (r = 0.60) between the measurements of the udder, the volume of the udder and the daily milk yield in Pelibuey sheep. When direct measurements of milk production cannot be performed in practice, the measurement of udders and their volume could be a viable alternative to estimate milk yield production as an indirect method. View Full-Text
Keywords: udder measurements; milk yield; hair sheep; mathematical models udder measurements; milk yield; hair sheep; mathematical models
MDPI and ACS Style

Arcos-Álvarez, D.; Canul-Solís, J.; García-Herrera, R.; Sarmiento-Franco, L.; Piñeiro-Vazquez, Á.; Casanova-Lugo, F.; Tedeschi, L.O.; Gonzalez-Ronquillo, M.; Chay-Canul, A. Udder Measurements and Their Relationship with Milk Yield in Pelibuey Ewes. Animals 2020, 10, 518.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop