Caracterización de los Sistemas Ganaderos de Aptitud Lechera en el Valle del Quijos, Provincia del Napo, Ecuador

Rivera, Santiago Alexander Guamán; Marcillo, Raúl Lorenzo González; Carrasco, Robinson; Guamán, Fabián

doi:10.19044/esj.2019.v15n15p279

“…Data from MAGAP 12 have shown that in the Amazon region, cattle raising represents one of the more important activities to generate money resources for these families 2 . In fact, of 5236 agricultural productive units (UPA's) identified in Orellana province, approximately 46% are developed as small livestock farmers with low technological levels and bad management of their biotic resources 2,[13][14][15] . Therefore, in this scenario, no studies have been conducted to explore the udder's health status and can recommend some mastitis control practices.…”

Section: Introductionmentioning

confidence: 99%

Somatic Cell Count Evaluation in Early Lactation between Primiparous and Multiparous Bos indicus Cows

Guamán-Rivera,

Guerrero-Pincay,

Ortiz-Naveda

et al. 2024

RB

0

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Using Bos indicus cows, a study examined the relationship between somatic cell count (SCC) and milk yield. For this study, one hundred fifty cows (Primiparous, PM, 75 and Multiparous, MP 75) in early lactation (days in milk, PM =134 ± 3; MP = 136 ± 5), milk production (9,88 kg/d, on average) of the creole breed Gyr lechers were enrolled. Before being assigned to each treatment, the SCC values were lower than 220,000 cells/mL, on average. All cows were maintained to graze daily on Megathyrsus maximus and supplemented with Morus alba ad libitum, being hand-milking at 0700 daily. Before analysis, the SCC was logarithmically transformed (log10). Then, PROC Mixed from SAS version 9.4 was used to evaluate all measurements. Regarding our results, the MP had greater milk yields than PM cows (10.83 vs. 9.18 ± 0.38 kg/d; P = 0.003). Similar results were observed for fat-corrected milk (8.26 vs. 6.80 ± 0.34; P = 0.002), although the fat values did not differ between both groups (P = 0.86) being lower than referential values for these breeds (2.46 ± 0.16, on average). No differences were observed in the other milk components (P = 0.65 to 0.85). Despite that, the somatic cell count (SCC) values showed a statistical tendency in PM than in MP (1.89 vs. 2.13 ± 0.05; P = 0.07). In conclusion, low-fat contents were observed in both groups, possibly due to the low quality of foods used in ruminant feeding. While that, the parity and advanced lactation conditioned the SCC contents. Therefore, other studies should be performed to identify more factors that could be determinants. Keywords: Milk, Tropical livestock, Udder health

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Somatic Cell Count Evaluation in Early Lactation between Primiparous and Multiparous Bos indicus Cows

Guamán-Rivera,

Guerrero-Pincay,

Ortiz-Naveda

et al. 2024

RB

1

0

View full text Add to dashboard Cite

Using Bos indicus cows, a study examined the relationship between somatic cell count (SCC) and milk yield. For this study, one hundred fifty cows (Primiparous, PM, 75 and Multiparous, MP 75) in early lactation (days in milk, PM =134 ± 3; MP = 136 ± 5), milk production (9,88 kg/d, on average) of the creole breed Gyr lechers were enrolled. Before being assigned to each treatment, the SCC values were lower than 220,000 cells/mL, on average. All cows were maintained to graze daily on Megathyrsus maximus and supplemented with Morus alba ad libitum, being hand-milking at 0700 daily. Before analysis, the SCC was logarithmically transformed (log10). Then, PROC Mixed from SAS version 9.4 was used to evaluate all measurements. Regarding our results, the MP had greater milk yields than PM cows (10.83 vs. 9.18 ± 0.38 kg/d; P = 0.003). Similar results were observed for fat-corrected milk (8.26 vs. 6.80 ± 0.34; P = 0.002), although the fat values did not differ between both groups (P = 0.86) being lower than referential values for these breeds (2.46 ± 0.16, on average). No differences were observed in the other milk components (P = 0.65 to 0.85). Despite that, the somatic cell count (SCC) values showed a statistical tendency in PM than in MP (1.89 vs. 2.13 ± 0.05; P = 0.07). In conclusion, low-fat contents were observed in both groups, possibly due to the low quality of foods used in ruminant feeding. While that, the parity and advanced lactation conditioned the SCC contents. Therefore, other studies should be performed to identify more factors that could be determinants. Keywords: Milk, Tropical livestock, Udder health

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The Associated Decision and Management Factors on Cattle Tick Level of Infestation in Two Tropical Areas of Ecuador

Paucar

¹

,

Pérez-Otáñez

²

,

Rodríguez‐Hidalgo

³

et al. 2022

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Decision-making on tick control practices is linked to the level of knowledge about livestock farming and to the social context in which individuals practice them. Tick infestation is one of the main problems in tropical livestock production. The objective of this study was to characterize tick-control related practices in two tropical livestock areas and their potential association with the level of tick infestation. A total of 139 farms were included in this survey. To determine this association, a multivariate logistic regression model was used. A stepwise model selection procedure was used and model validation was tested. Cattle husbandry as a main activity, the use of external paddocks, the use of amitraz, and the lack of mechanization on the farm were related with high tick infestation. On the other hand, owner involvement in the preparation of acaricide solution was identified as a protective factor against high tick infestation. At animal level, age (old), body condition status (thin), and lactation were also associated with high tick infestations, while Bos primigenius indicus cattle and their crosses reduced the probability of high tick infestations. The factors studied, such as herd size, education level of the owners, and veterinary guidance, varied from farm to farm. Nonetheless, these differences did not generate changes in the level of tick infestation. According to the area under the receiver operating characteristic curve (AUC-ROC), the model at farm level predicts a high level of infestation, with an accuracy of 72.00% and high sensitivity. In addition, at animal level, crossbreeding with indicus cattle and breeding selection for host resistance will be useful against high tick infestation. Likewise, the implementation of programs of capacitation and research on tick control for farmers, cowboys, and vets in these areas is necessary.

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Caracterización de los Sistemas Ganaderos de Aptitud Lechera en el Valle del Quijos, Provincia del Napo, Ecuador

Cited by 5 publications

References 2 publications

Somatic Cell Count Evaluation in Early Lactation between Primiparous and Multiparous Bos indicus Cows

Somatic Cell Count Evaluation in Early Lactation between Primiparous and Multiparous Bos indicus Cows

Somatic Cell Count Evaluation in Early Lactation between Primiparous and Multiparous Bos indicus Cows

The Associated Decision and Management Factors on Cattle Tick Level of Infestation in Two Tropical Areas of Ecuador

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